./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/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 d7fb0cb3aecdc56f56ac37bccb90dc5beea8d3d2 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:57:01,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:57:01,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:57:01,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:57:01,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:57:01,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:57:01,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:57:01,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:57:01,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:57:01,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:57:01,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:57:01,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:57:01,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:57:01,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:57:01,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:57:01,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:57:01,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:57:01,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:57:01,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:57:01,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:57:01,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:57:01,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:57:01,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:57:01,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:57:01,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:57:01,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:57:01,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:57:01,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:57:01,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:57:01,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:57:01,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:57:01,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:57:01,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:57:01,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:57:01,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:57:01,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:57:01,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:57:01,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:57:01,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:57:01,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:57:01,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:57:01,365 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:57:01,405 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:57:01,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:57:01,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:57:01,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:57:01,407 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:57:01,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:57:01,408 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:57:01,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:57:01,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:57:01,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:57:01,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:57:01,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:57:01,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:57:01,410 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:57:01,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:57:01,410 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:57:01,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:57:01,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:57:01,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:57:01,411 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:57:01,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:57:01,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:57:01,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:57:01,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:57:01,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:57:01,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:57:01,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:57:01,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:57:01,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:57:01,412 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_ddd0b1f3-760f-43c5-b8f6-027492131e29/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7fb0cb3aecdc56f56ac37bccb90dc5beea8d3d2 [2020-12-01 15:57:01,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:57:01,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:57:01,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:57:01,758 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:57:01,760 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:57:01,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c [2020-12-01 15:57:01,844 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/bin/uautomizer/data/ae8154e89/750e7529f7e341d1b8cb7b47b46e7f98/FLAGdcac40e0c [2020-12-01 15:57:02,385 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:57:02,388 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c [2020-12-01 15:57:02,400 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/bin/uautomizer/data/ae8154e89/750e7529f7e341d1b8cb7b47b46e7f98/FLAGdcac40e0c [2020-12-01 15:57:02,736 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/bin/uautomizer/data/ae8154e89/750e7529f7e341d1b8cb7b47b46e7f98 [2020-12-01 15:57:02,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:57:02,743 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:57:02,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:57:02,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:57:02,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:57:02,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:57:02" (1/1) ... [2020-12-01 15:57:02,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30946557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:02, skipping insertion in model container [2020-12-01 15:57:02,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:57:02" (1/1) ... [2020-12-01 15:57:02,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:57:02,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:57:03,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:57:03,077 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:57:03,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:57:03,133 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:57:03,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:03 WrapperNode [2020-12-01 15:57:03,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:57:03,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:57:03,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:57:03,139 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:57:03,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:03" (1/1) ... [2020-12-01 15:57:03,156 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:03" (1/1) ... [2020-12-01 15:57:03,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:57:03,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:57:03,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:57:03,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:57:03,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:03" (1/1) ... [2020-12-01 15:57:03,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:03" (1/1) ... [2020-12-01 15:57:03,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:03" (1/1) ... [2020-12-01 15:57:03,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:03" (1/1) ... [2020-12-01 15:57:03,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:03" (1/1) ... [2020-12-01 15:57:03,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:03" (1/1) ... [2020-12-01 15:57:03,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:03" (1/1) ... [2020-12-01 15:57:03,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:57:03,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:57:03,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:57:03,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:57:03,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/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 [2020-12-01 15:57:03,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:57:03,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:57:03,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:57:03,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:57:03,790 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:57:03,790 INFO L298 CfgBuilder]: Removed 36 assume(true) statements. [2020-12-01 15:57:03,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:57:03 BoogieIcfgContainer [2020-12-01 15:57:03,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:57:03,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:57:03,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:57:03,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:57:03,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:57:02" (1/3) ... [2020-12-01 15:57:03,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad67e4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:57:03, skipping insertion in model container [2020-12-01 15:57:03,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:03" (2/3) ... [2020-12-01 15:57:03,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad67e4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:57:03, skipping insertion in model container [2020-12-01 15:57:03,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:57:03" (3/3) ... [2020-12-01 15:57:03,802 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound2.c [2020-12-01 15:57:03,818 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:57:03,822 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-01 15:57:03,834 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-01 15:57:03,872 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:57:03,872 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:57:03,872 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:57:03,872 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:57:03,873 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:57:03,873 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:57:03,873 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:57:03,873 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:57:03,894 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-12-01 15:57:03,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 15:57:03,901 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:57:03,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:57:03,903 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:57:03,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:57:03,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-01 15:57:03,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:57:03,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381518870] [2020-12-01 15:57:03,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:57:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:57:04,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:57:04,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381518870] [2020-12-01 15:57:04,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:57:04,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:57:04,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111919999] [2020-12-01 15:57:04,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:57:04,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:57:04,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:57:04,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:57:04,080 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-12-01 15:57:04,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:57:04,099 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2020-12-01 15:57:04,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:57:04,101 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-01 15:57:04,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:57:04,110 INFO L225 Difference]: With dead ends: 75 [2020-12-01 15:57:04,110 INFO L226 Difference]: Without dead ends: 35 [2020-12-01 15:57:04,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:57:04,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-01 15:57:04,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-01 15:57:04,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-01 15:57:04,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-12-01 15:57:04,149 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 7 [2020-12-01 15:57:04,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:57:04,149 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-12-01 15:57:04,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:57:04,150 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-12-01 15:57:04,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 15:57:04,150 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:57:04,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:57:04,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:57:04,151 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:57:04,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:57:04,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-01 15:57:04,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:57:04,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575451966] [2020-12-01 15:57:04,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:57:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:57:04,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:57:04,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575451966] [2020-12-01 15:57:04,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:57:04,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:57:04,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894973158] [2020-12-01 15:57:04,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:57:04,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:57:04,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:57:04,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:57:04,315 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 4 states. [2020-12-01 15:57:04,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:57:04,403 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-12-01 15:57:04,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:57:04,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-01 15:57:04,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:57:04,405 INFO L225 Difference]: With dead ends: 54 [2020-12-01 15:57:04,405 INFO L226 Difference]: Without dead ends: 52 [2020-12-01 15:57:04,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:57:04,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-01 15:57:04,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2020-12-01 15:57:04,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-01 15:57:04,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-12-01 15:57:04,414 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 7 [2020-12-01 15:57:04,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:57:04,414 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-12-01 15:57:04,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:57:04,414 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-12-01 15:57:04,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 15:57:04,415 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:57:04,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:57:04,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:57:04,416 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:57:04,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:57:04,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1186818322, now seen corresponding path program 1 times [2020-12-01 15:57:04,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:57:04,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450458460] [2020-12-01 15:57:04,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:57:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:57:04,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:57:04,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450458460] [2020-12-01 15:57:04,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:57:04,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:57:04,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451827759] [2020-12-01 15:57:04,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:57:04,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:57:04,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:57:04,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:57:04,481 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 4 states. [2020-12-01 15:57:04,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:57:04,569 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2020-12-01 15:57:04,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:57:04,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-01 15:57:04,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:57:04,571 INFO L225 Difference]: With dead ends: 52 [2020-12-01 15:57:04,571 INFO L226 Difference]: Without dead ends: 50 [2020-12-01 15:57:04,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:57:04,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-01 15:57:04,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 31. [2020-12-01 15:57:04,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-01 15:57:04,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-12-01 15:57:04,579 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 9 [2020-12-01 15:57:04,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:57:04,579 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-12-01 15:57:04,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:57:04,580 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-12-01 15:57:04,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:57:04,580 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:57:04,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:57:04,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:57:04,581 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:57:04,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:57:04,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1928706379, now seen corresponding path program 1 times [2020-12-01 15:57:04,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:57:04,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712862724] [2020-12-01 15:57:04,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:57:04,598 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:57:04,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220524050] [2020-12-01 15:57:04,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/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 [2020-12-01 15:57:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:57:04,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-01 15:57:04,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:57:04,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:57:04,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712862724] [2020-12-01 15:57:04,833 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:57:04,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220524050] [2020-12-01 15:57:04,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:57:04,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 15:57:04,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313442856] [2020-12-01 15:57:04,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:57:04,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:57:04,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:57:04,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:57:04,856 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 6 states. [2020-12-01 15:57:05,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:57:05,031 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-12-01 15:57:05,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:57:05,031 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-01 15:57:05,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:57:05,033 INFO L225 Difference]: With dead ends: 72 [2020-12-01 15:57:05,035 INFO L226 Difference]: Without dead ends: 50 [2020-12-01 15:57:05,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:57:05,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-01 15:57:05,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-12-01 15:57:05,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-01 15:57:05,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-12-01 15:57:05,059 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 11 [2020-12-01 15:57:05,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:57:05,059 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-12-01 15:57:05,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:57:05,060 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-12-01 15:57:05,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:57:05,060 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:57:05,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:57:05,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:57:05,270 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:57:05,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:57:05,270 INFO L82 PathProgramCache]: Analyzing trace with hash -13373041, now seen corresponding path program 1 times [2020-12-01 15:57:05,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:57:05,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248467685] [2020-12-01 15:57:05,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:57:05,300 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:57:05,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [845796348] [2020-12-01 15:57:05,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/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 [2020-12-01 15:57:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:57:05,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-01 15:57:05,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:57:05,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:57:05,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248467685] [2020-12-01 15:57:05,507 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:57:05,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845796348] [2020-12-01 15:57:05,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:57:05,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 15:57:05,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788969639] [2020-12-01 15:57:05,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:57:05,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:57:05,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:57:05,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:57:05,515 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 5 states. [2020-12-01 15:57:05,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:57:05,616 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-12-01 15:57:05,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:57:05,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-01 15:57:05,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:57:05,620 INFO L225 Difference]: With dead ends: 63 [2020-12-01 15:57:05,620 INFO L226 Difference]: Without dead ends: 52 [2020-12-01 15:57:05,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:57:05,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-01 15:57:05,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-12-01 15:57:05,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-01 15:57:05,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-12-01 15:57:05,637 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2020-12-01 15:57:05,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:57:05,637 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-12-01 15:57:05,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:57:05,638 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-12-01 15:57:05,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 15:57:05,638 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:57:05,638 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:57:05,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:57:05,839 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:57:05,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:57:05,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1886608768, now seen corresponding path program 1 times [2020-12-01 15:57:05,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:57:05,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029710237] [2020-12-01 15:57:05,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:57:05,859 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:57:05,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [39749174] [2020-12-01 15:57:05,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/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 [2020-12-01 15:57:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:57:05,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-01 15:57:05,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:57:06,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:57:06,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029710237] [2020-12-01 15:57:06,065 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:57:06,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39749174] [2020-12-01 15:57:06,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:57:06,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-01 15:57:06,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870355896] [2020-12-01 15:57:06,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:57:06,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:57:06,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:57:06,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:57:06,069 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 7 states. [2020-12-01 15:57:06,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:57:06,277 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2020-12-01 15:57:06,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:57:06,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-01 15:57:06,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:57:06,287 INFO L225 Difference]: With dead ends: 98 [2020-12-01 15:57:06,287 INFO L226 Difference]: Without dead ends: 61 [2020-12-01 15:57:06,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:57:06,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-01 15:57:06,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-12-01 15:57:06,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-01 15:57:06,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2020-12-01 15:57:06,303 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 18 [2020-12-01 15:57:06,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:57:06,303 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2020-12-01 15:57:06,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:57:06,303 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2020-12-01 15:57:06,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 15:57:06,304 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:57:06,304 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-01 15:57:06,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:57:06,505 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:57:06,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:57:06,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1314135125, now seen corresponding path program 2 times [2020-12-01 15:57:06,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:57:06,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040829076] [2020-12-01 15:57:06,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:57:06,518 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:57:06,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694722748] [2020-12-01 15:57:06,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/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 [2020-12-01 15:57:06,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:57:06,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:57:06,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-01 15:57:06,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:57:06,732 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:57:06,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040829076] [2020-12-01 15:57:06,733 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:57:06,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694722748] [2020-12-01 15:57:06,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:57:06,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 15:57:06,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404473363] [2020-12-01 15:57:06,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:57:06,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:57:06,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:57:06,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:57:06,740 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 8 states. [2020-12-01 15:57:06,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:57:06,957 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2020-12-01 15:57:06,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 15:57:06,961 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-12-01 15:57:06,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:57:06,963 INFO L225 Difference]: With dead ends: 103 [2020-12-01 15:57:06,963 INFO L226 Difference]: Without dead ends: 89 [2020-12-01 15:57:06,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:57:06,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-01 15:57:06,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2020-12-01 15:57:06,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-01 15:57:06,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-12-01 15:57:06,989 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 25 [2020-12-01 15:57:06,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:57:06,990 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-12-01 15:57:06,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:57:06,990 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-12-01 15:57:06,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 15:57:06,991 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:57:06,991 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:57:07,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:57:07,221 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:57:07,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:57:07,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1085203663, now seen corresponding path program 1 times [2020-12-01 15:57:07,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:57:07,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232329010] [2020-12-01 15:57:07,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:57:07,233 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:57:07,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1730623308] [2020-12-01 15:57:07,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/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 [2020-12-01 15:57:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:57:07,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-01 15:57:07,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:57:07,493 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:57:07,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232329010] [2020-12-01 15:57:07,493 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:57:07,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730623308] [2020-12-01 15:57:07,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:57:07,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-01 15:57:07,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252781246] [2020-12-01 15:57:07,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:57:07,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:57:07,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:57:07,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:57:07,495 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 7 states. [2020-12-01 15:57:07,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:57:07,681 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2020-12-01 15:57:07,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:57:07,682 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-12-01 15:57:07,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:57:07,685 INFO L225 Difference]: With dead ends: 101 [2020-12-01 15:57:07,685 INFO L226 Difference]: Without dead ends: 99 [2020-12-01 15:57:07,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:57:07,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-01 15:57:07,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 88. [2020-12-01 15:57:07,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-01 15:57:07,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2020-12-01 15:57:07,711 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 27 [2020-12-01 15:57:07,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:57:07,711 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2020-12-01 15:57:07,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:57:07,711 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2020-12-01 15:57:07,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-01 15:57:07,712 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:57:07,712 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:57:07,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:57:07,941 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:57:07,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:57:07,942 INFO L82 PathProgramCache]: Analyzing trace with hash -796144622, now seen corresponding path program 1 times [2020-12-01 15:57:07,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:57:07,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997885097] [2020-12-01 15:57:07,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:57:07,952 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:57:07,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [898340190] [2020-12-01 15:57:07,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/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 [2020-12-01 15:57:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:57:08,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-01 15:57:08,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:57:08,127 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:57:08,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997885097] [2020-12-01 15:57:08,127 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:57:08,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898340190] [2020-12-01 15:57:08,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:57:08,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 15:57:08,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059757509] [2020-12-01 15:57:08,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:57:08,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:57:08,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:57:08,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:57:08,131 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand 8 states. [2020-12-01 15:57:08,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:57:08,307 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2020-12-01 15:57:08,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 15:57:08,307 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-12-01 15:57:08,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:57:08,308 INFO L225 Difference]: With dead ends: 117 [2020-12-01 15:57:08,308 INFO L226 Difference]: Without dead ends: 91 [2020-12-01 15:57:08,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:57:08,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-01 15:57:08,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2020-12-01 15:57:08,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-01 15:57:08,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2020-12-01 15:57:08,317 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 29 [2020-12-01 15:57:08,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:57:08,317 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2020-12-01 15:57:08,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:57:08,318 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2020-12-01 15:57:08,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-01 15:57:08,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:57:08,319 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:57:08,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:57:08,537 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:57:08,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:57:08,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1129109896, now seen corresponding path program 1 times [2020-12-01 15:57:08,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:57:08,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772407203] [2020-12-01 15:57:08,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:57:08,548 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:57:08,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490495439] [2020-12-01 15:57:08,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/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 [2020-12-01 15:57:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:57:08,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-01 15:57:08,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:57:08,736 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:57:08,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772407203] [2020-12-01 15:57:08,743 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:57:08,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490495439] [2020-12-01 15:57:08,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:57:08,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 15:57:08,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301838995] [2020-12-01 15:57:08,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:57:08,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:57:08,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:57:08,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:57:08,746 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 8 states. [2020-12-01 15:57:08,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:57:08,908 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2020-12-01 15:57:08,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:57:08,909 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-12-01 15:57:08,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:57:08,909 INFO L225 Difference]: With dead ends: 91 [2020-12-01 15:57:08,910 INFO L226 Difference]: Without dead ends: 76 [2020-12-01 15:57:08,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:57:08,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-01 15:57:08,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-12-01 15:57:08,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-01 15:57:08,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2020-12-01 15:57:08,917 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 32 [2020-12-01 15:57:08,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:57:08,917 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2020-12-01 15:57:08,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:57:08,917 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2020-12-01 15:57:08,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-01 15:57:08,918 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:57:08,919 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-01 15:57:09,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-01 15:57:09,141 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:57:09,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:57:09,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1575226400, now seen corresponding path program 3 times [2020-12-01 15:57:09,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:57:09,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487261764] [2020-12-01 15:57:09,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:57:09,151 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:57:09,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [511168945] [2020-12-01 15:57:09,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/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 [2020-12-01 15:57:09,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-01 15:57:09,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:57:09,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-01 15:57:09,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:57:09,423 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 15:57:09,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487261764] [2020-12-01 15:57:09,423 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:57:09,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511168945] [2020-12-01 15:57:09,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:57:09,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-01 15:57:09,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908009785] [2020-12-01 15:57:09,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:57:09,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:57:09,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:57:09,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:57:09,426 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand 9 states. [2020-12-01 15:57:09,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:57:09,666 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2020-12-01 15:57:09,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:57:09,667 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-12-01 15:57:09,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:57:09,669 INFO L225 Difference]: With dead ends: 94 [2020-12-01 15:57:09,669 INFO L226 Difference]: Without dead ends: 84 [2020-12-01 15:57:09,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:57:09,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-01 15:57:09,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2020-12-01 15:57:09,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-01 15:57:09,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2020-12-01 15:57:09,684 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 32 [2020-12-01 15:57:09,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:57:09,686 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2020-12-01 15:57:09,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:57:09,686 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2020-12-01 15:57:09,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-01 15:57:09,689 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:57:09,689 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:57:09,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-01 15:57:09,917 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:57:09,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:57:09,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1042348646, now seen corresponding path program 2 times [2020-12-01 15:57:09,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:57:09,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696101687] [2020-12-01 15:57:09,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:57:09,929 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:57:09,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990904833] [2020-12-01 15:57:09,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/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 [2020-12-01 15:57:09,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:57:09,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:57:09,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 43 conjunts are in the unsatisfiable core [2020-12-01 15:57:09,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:57:10,367 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 15:57:10,377 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 15:57:10,381 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:57:10,405 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:57:10,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696101687] [2020-12-01 15:57:10,405 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:57:10,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990904833] [2020-12-01 15:57:10,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:57:10,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-01 15:57:10,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799361463] [2020-12-01 15:57:10,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-01 15:57:10,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:57:10,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-01 15:57:10,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:57:10,407 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand 11 states. [2020-12-01 15:57:11,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:57:11,143 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-12-01 15:57:11,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-01 15:57:11,144 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-12-01 15:57:11,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:57:11,144 INFO L225 Difference]: With dead ends: 108 [2020-12-01 15:57:11,145 INFO L226 Difference]: Without dead ends: 70 [2020-12-01 15:57:11,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2020-12-01 15:57:11,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-01 15:57:11,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 60. [2020-12-01 15:57:11,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-01 15:57:11,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-12-01 15:57:11,154 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 34 [2020-12-01 15:57:11,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:57:11,154 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-12-01 15:57:11,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-01 15:57:11,154 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-12-01 15:57:11,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-01 15:57:11,162 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:57:11,162 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:57:11,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:57:11,389 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:57:11,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:57:11,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1894983429, now seen corresponding path program 3 times [2020-12-01 15:57:11,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:57:11,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435922462] [2020-12-01 15:57:11,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:57:11,408 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:57:11,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2655421] [2020-12-01 15:57:11,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/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 [2020-12-01 15:57:11,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-01 15:57:11,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:57:11,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-01 15:57:11,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:57:11,653 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:57:11,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435922462] [2020-12-01 15:57:11,654 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:57:11,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2655421] [2020-12-01 15:57:11,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:57:11,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-01 15:57:11,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288928879] [2020-12-01 15:57:11,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:57:11,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:57:11,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:57:11,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:57:11,659 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 9 states. [2020-12-01 15:57:11,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:57:11,964 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2020-12-01 15:57:11,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 15:57:11,964 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-12-01 15:57:11,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:57:11,966 INFO L225 Difference]: With dead ends: 94 [2020-12-01 15:57:11,966 INFO L226 Difference]: Without dead ends: 76 [2020-12-01 15:57:11,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-12-01 15:57:11,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-01 15:57:11,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 61. [2020-12-01 15:57:11,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-01 15:57:11,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-12-01 15:57:11,974 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 40 [2020-12-01 15:57:11,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:57:11,977 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-12-01 15:57:11,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:57:11,978 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-12-01 15:57:11,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-01 15:57:11,978 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:57:11,978 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:57:12,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:57:12,201 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:57:12,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:57:12,202 INFO L82 PathProgramCache]: Analyzing trace with hash 70388230, now seen corresponding path program 1 times [2020-12-01 15:57:12,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:57:12,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537657228] [2020-12-01 15:57:12,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:57:12,219 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:57:12,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550740274] [2020-12-01 15:57:12,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/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 [2020-12-01 15:57:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:57:12,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 59 conjunts are in the unsatisfiable core [2020-12-01 15:57:12,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:57:12,697 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:57:12,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537657228] [2020-12-01 15:57:12,698 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:57:12,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550740274] [2020-12-01 15:57:12,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:57:12,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-01 15:57:12,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886016403] [2020-12-01 15:57:12,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-01 15:57:12,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:57:12,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-01 15:57:12,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-12-01 15:57:12,699 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 14 states. [2020-12-01 15:57:13,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:57:13,119 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2020-12-01 15:57:13,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 15:57:13,120 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2020-12-01 15:57:13,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:57:13,120 INFO L225 Difference]: With dead ends: 70 [2020-12-01 15:57:13,120 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:57:13,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-12-01 15:57:13,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:57:13,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:57:13,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:57:13,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:57:13,126 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2020-12-01 15:57:13,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:57:13,126 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:57:13,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-01 15:57:13,126 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:57:13,126 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:57:13,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-01 15:57:13,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 15:57:13,775 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-12-01 15:57:13,915 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2020-12-01 15:57:14,185 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-12-01 15:57:14,348 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2020-12-01 15:57:14,600 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2020-12-01 15:57:14,760 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-12-01 15:57:14,828 INFO L265 CegarLoopResult]: At program point L60(lines 22 61) the Hoare annotation is: true [2020-12-01 15:57:14,829 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:57:14,829 INFO L262 CegarLoopResult]: For program point L52(lines 52 55) no Hoare annotation was computed. [2020-12-01 15:57:14,829 INFO L262 CegarLoopResult]: For program point L52-2(lines 22 61) no Hoare annotation was computed. [2020-12-01 15:57:14,829 INFO L262 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-12-01 15:57:14,829 INFO L262 CegarLoopResult]: For program point L44-1(lines 44 56) no Hoare annotation was computed. [2020-12-01 15:57:14,829 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:57:14,829 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 15:57:14,829 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 15:57:14,829 INFO L262 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-12-01 15:57:14,829 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:57:14,829 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:57:14,829 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:57:14,829 INFO L262 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:57:14,829 INFO L258 CegarLoopResult]: At program point L15-1(lines 14 20) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (.cse0 (<= 0 ULTIMATE.start_main_~A~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse5 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse6 (<= ULTIMATE.start_main_~A~0 2))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) .cse3 .cse4 .cse5 .cse6 (= ULTIMATE.start_main_~d~0 1)) (and (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~B~0 4)) (= ULTIMATE.start_main_~d~0 4) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0)) (and .cse0 (= ULTIMATE.start_main_~d~0 2) .cse2 (= ULTIMATE.start_main_~p~0 2) .cse3 .cse4 .cse5 .cse6 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~d~0)))) [2020-12-01 15:57:14,830 INFO L262 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:57:14,830 INFO L258 CegarLoopResult]: At program point L15-3(lines 14 20) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~A~0)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~q~0 0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse4 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse5 (<= ULTIMATE.start_main_~A~0 2))) (or (and .cse0 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0)) .cse1 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~d~0 1)) (and (= ULTIMATE.start_main_~p~0 4) (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~B~0 4)) (= ULTIMATE.start_main_~d~0 4) .cse1 .cse2 .cse3 .cse4 .cse5 (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0)) (and .cse0 (= ULTIMATE.start_main_~d~0 2) .cse1 (= ULTIMATE.start_main_~p~0 2) .cse2 .cse3 .cse4 .cse5 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~d~0)))) [2020-12-01 15:57:14,830 INFO L262 CegarLoopResult]: For program point L15-4(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:57:14,830 INFO L258 CegarLoopResult]: At program point L15-5(line 38) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (.cse0 (<= 0 ULTIMATE.start_main_~A~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse5 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse6 (<= ULTIMATE.start_main_~A~0 2))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) .cse3 .cse4 .cse5 .cse6 (= ULTIMATE.start_main_~d~0 1)) (and (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~B~0 4)) (= ULTIMATE.start_main_~d~0 4) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0)) (and .cse0 (= ULTIMATE.start_main_~d~0 2) .cse2 (= ULTIMATE.start_main_~p~0 2) .cse3 .cse4 .cse5 .cse6 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~d~0)))) [2020-12-01 15:57:14,830 INFO L262 CegarLoopResult]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:57:14,830 INFO L258 CegarLoopResult]: At program point L15-7(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~d~0 2)) (.cse2 (= ULTIMATE.start_main_~p~0 2)) (.cse5 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~d~0)) (.cse8 (= ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0)) (.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse7 (<= ULTIMATE.start_main_~A~0 2)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse9 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0)) (.cse10 (= ULTIMATE.start_main_~p~0 1)) (.cse3 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and (= ULTIMATE.start_main_~p~0 4) (= ULTIMATE.start_main_~d~0 (* (* (div (* ULTIMATE.start_main_~p~0 (- 1)) (- 2)) ULTIMATE.start_main_~B~0) 2)) (= ULTIMATE.start_main_~d~0 4) .cse1 .cse3 .cse6 .cse4 .cse7 (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0)) (and (<= (* 2 ULTIMATE.start_main_~B~0) ULTIMATE.start_main_~A~0) .cse0 .cse1 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~r~0)) .cse8 .cse2 .cse6 .cse7 .cse5) (and .cse1 .cse9 .cse8 .cse10 (= ULTIMATE.start_main_~d~0 1) (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~r~0))) (and (< ULTIMATE.start_main_~B~0 (+ (div (+ ULTIMATE.start_main_~A~0 (* ULTIMATE.start_main_~r~0 (- 1))) 2) 1)) (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~q~0 2) .cse1 .cse9 .cse10 (<= 0 ULTIMATE.start_main_~r~0) .cse6 .cse7) (and (= ULTIMATE.start_main_~B~0 1) .cse1 .cse9 .cse10 .cse3 .cse4))) [2020-12-01 15:57:14,830 INFO L262 CegarLoopResult]: For program point L15-8(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:57:14,830 INFO L258 CegarLoopResult]: At program point L15-9(line 48) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~d~0 2)) (.cse2 (= ULTIMATE.start_main_~p~0 2)) (.cse5 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~d~0)) (.cse6 (= ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0)) (.cse7 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse8 (<= ULTIMATE.start_main_~A~0 2)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse9 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0)) (.cse10 (= ULTIMATE.start_main_~p~0 1)) (.cse3 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and (<= (* 2 ULTIMATE.start_main_~B~0) ULTIMATE.start_main_~A~0) .cse0 .cse1 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~r~0)) .cse6 .cse2 .cse7 .cse8 .cse5) (and (= ULTIMATE.start_main_~p~0 4) (= ULTIMATE.start_main_~d~0 4) (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0)) .cse1 .cse3 .cse7 .cse4 .cse8 (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0)) (and .cse1 .cse9 .cse6 .cse10 (= ULTIMATE.start_main_~d~0 1) (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~r~0))) (and (< ULTIMATE.start_main_~B~0 (+ (div (+ ULTIMATE.start_main_~A~0 (* ULTIMATE.start_main_~r~0 (- 1))) 2) 1)) (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~q~0 2) .cse1 .cse9 .cse10 (<= 0 ULTIMATE.start_main_~r~0) .cse7 .cse8) (and (= ULTIMATE.start_main_~B~0 1) .cse1 .cse9 .cse10 .cse3 .cse4))) [2020-12-01 15:57:14,831 INFO L262 CegarLoopResult]: For program point L15-10(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:57:14,831 INFO L258 CegarLoopResult]: At program point L15-11(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_main_~B~0 1) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~p~0 1)) [2020-12-01 15:57:14,831 INFO L262 CegarLoopResult]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:57:14,831 INFO L265 CegarLoopResult]: At program point L15-13(lines 14 20) the Hoare annotation is: true [2020-12-01 15:57:14,831 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 15:57:14,831 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:57:14,831 INFO L262 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:57:14,831 INFO L262 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:57:14,831 INFO L262 CegarLoopResult]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:57:14,831 INFO L262 CegarLoopResult]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:57:14,831 INFO L262 CegarLoopResult]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:57:14,831 INFO L262 CegarLoopResult]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:57:14,831 INFO L262 CegarLoopResult]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:57:14,831 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 15:57:14,832 INFO L258 CegarLoopResult]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~A~0)) (.cse1 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (.cse6 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~q~0 0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse5 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse4 (<= ULTIMATE.start_main_~A~0 2))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~d~0 1)) (and (= ULTIMATE.start_main_~p~0 4) (= ULTIMATE.start_main_~d~0 4) .cse1 .cse6 .cse2 .cse3 .cse5 .cse4 (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0)) (and .cse0 .cse1 (= ULTIMATE.start_main_~d~0 2) .cse6 (= ULTIMATE.start_main_~p~0 2) .cse2 .cse3 .cse5 .cse4))) [2020-12-01 15:57:14,832 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:57:14,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:57:14 BoogieIcfgContainer [2020-12-01 15:57:14,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:57:14,882 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:57:14,882 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:57:14,882 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:57:14,883 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:57:03" (3/4) ... [2020-12-01 15:57:14,886 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:57:14,906 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-12-01 15:57:14,906 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:57:14,906 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:57:14,907 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:57:14,971 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ddd0b1f3-760f-43c5-b8f6-027492131e29/bin/uautomizer/witness.graphml [2020-12-01 15:57:14,971 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:57:14,972 INFO L168 Benchmark]: Toolchain (without parser) took 12228.51 ms. Allocated memory was 98.6 MB in the beginning and 151.0 MB in the end (delta: 52.4 MB). Free memory was 64.3 MB in the beginning and 88.8 MB in the end (delta: -24.5 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:14,973 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 98.6 MB. Free memory was 69.5 MB in the beginning and 69.4 MB in the end (delta: 28.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:57:14,973 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.51 ms. Allocated memory is still 98.6 MB. Free memory was 64.1 MB in the beginning and 75.4 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:14,973 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.93 ms. Allocated memory is still 98.6 MB. Free memory was 75.4 MB in the beginning and 74.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:14,974 INFO L168 Benchmark]: Boogie Preprocessor took 53.64 ms. Allocated memory is still 98.6 MB. Free memory was 74.0 MB in the beginning and 72.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:57:14,974 INFO L168 Benchmark]: RCFGBuilder took 549.12 ms. Allocated memory is still 98.6 MB. Free memory was 72.7 MB in the beginning and 57.3 MB in the end (delta: 15.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:14,974 INFO L168 Benchmark]: TraceAbstraction took 11088.52 ms. Allocated memory was 98.6 MB in the beginning and 151.0 MB in the end (delta: 52.4 MB). Free memory was 56.5 MB in the beginning and 93.0 MB in the end (delta: -36.5 MB). Peak memory consumption was 70.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:14,975 INFO L168 Benchmark]: Witness Printer took 88.89 ms. Allocated memory is still 151.0 MB. Free memory was 93.0 MB in the beginning and 88.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:14,977 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 98.6 MB. Free memory was 69.5 MB in the beginning and 69.4 MB in the end (delta: 28.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 386.51 ms. Allocated memory is still 98.6 MB. Free memory was 64.1 MB in the beginning and 75.4 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.93 ms. Allocated memory is still 98.6 MB. Free memory was 75.4 MB in the beginning and 74.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.64 ms. Allocated memory is still 98.6 MB. Free memory was 74.0 MB in the beginning and 72.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 549.12 ms. Allocated memory is still 98.6 MB. Free memory was 72.7 MB in the beginning and 57.3 MB in the end (delta: 15.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11088.52 ms. Allocated memory was 98.6 MB in the beginning and 151.0 MB in the end (delta: 52.4 MB). Free memory was 56.5 MB in the beginning and 93.0 MB in the end (delta: -36.5 MB). Peak memory consumption was 70.3 MB. Max. memory is 16.1 GB. * Witness Printer took 88.89 ms. Allocated memory is still 151.0 MB. Free memory was 93.0 MB in the beginning and 88.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((((((0 <= A && d == p * B) && 1 == cond) && B == d) && q == 0) && cond == 1) && A == r) && A <= 2) && d == 1) || ((((((((d == B * 4 && d == 4) && d == p * B) && 1 == cond) && q == 0) && cond == 1) && A == r) && A <= 2) && d * -1 / -2 <= r)) || ((((((((0 <= A && d == 2) && 1 == cond) && p == 2) && q == 0) && cond == 1) && A == r) && A <= 2) && B * 2 == d) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((0 <= A && d == p * B) && B == d) && q == 0) && cond == 1) && A <= 2) && A == r) && d == 1) || ((((((((p == 4 && d == 4) && d == p * B) && 1 == cond) && q == 0) && cond == 1) && A == r) && A <= 2) && d * -1 / -2 <= r)) || ((((((((0 <= A && d == p * B) && d == 2) && 1 == cond) && p == 2) && q == 0) && cond == 1) && A == r) && A <= 2) - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: (((((((((d == 2 && 1 == cond) && p == 2) && q == 0) && A == r) && B * 2 == d) || ((((((((2 * B <= A && d == 2) && 1 == cond) && A == d + r) && q == p) && p == 2) && cond == 1) && A <= 2) && B * 2 == d)) || ((((((((p == 4 && d == 4) && d == p * B) && 1 == cond) && q == 0) && cond == 1) && A == r) && A <= 2) && d * -1 / -2 <= r)) || (((((1 == cond && B == d) && q == p) && p == 1) && d == 1) && A == B + r)) || ((((((((B < (A + r * -1) / 2 + 1 && r < d) && q == 2) && 1 == cond) && B == d) && p == 1) && 0 <= r) && cond == 1) && A <= 2)) || (((((B == 1 && 1 == cond) && B == d) && p == 1) && q == 0) && A == r) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((0 <= A && d == p * B) && 1 == cond) && B == d) && q == 0) && cond == 1) && A == r) && A <= 2) && d == 1) || ((((((((p == 4 && d == B * 4) && d == 4) && 1 == cond) && q == 0) && cond == 1) && A == r) && A <= 2) && d * -1 / -2 <= r)) || ((((((((0 <= A && d == 2) && 1 == cond) && p == 2) && q == 0) && cond == 1) && A == r) && A <= 2) && B * 2 == d) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((d == 2 && 1 == cond) && p == 2) && q == 0) && A == r) && B * 2 == d) || ((((((((p == 4 && d == p * -1 / -2 * B * 2) && d == 4) && 1 == cond) && q == 0) && cond == 1) && A == r) && A <= 2) && d * -1 / -2 <= r)) || ((((((((2 * B <= A && d == 2) && 1 == cond) && A == d + r) && q == p) && p == 2) && cond == 1) && A <= 2) && B * 2 == d)) || (((((1 == cond && B == d) && q == p) && p == 1) && d == 1) && A == B + r)) || ((((((((B < (A + r * -1) / 2 + 1 && r < d) && q == 2) && 1 == cond) && B == d) && p == 1) && 0 <= r) && cond == 1) && A <= 2)) || (((((B == 1 && 1 == cond) && B == d) && p == 1) && q == 0) && A == r) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((0 <= A && d == p * B) && 1 == cond) && B == d) && q == 0) && cond == 1) && A == r) && A <= 2) && d == 1) || ((((((((d == B * 4 && d == 4) && d == p * B) && 1 == cond) && q == 0) && cond == 1) && A == r) && A <= 2) && d * -1 / -2 <= r)) || ((((((((0 <= A && d == 2) && 1 == cond) && p == 2) && q == 0) && cond == 1) && A == r) && A <= 2) && B * 2 == d) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((B == 1 && !(0 == cond)) && B == d) && p == 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.4s, OverallIterations: 14, TraceHistogramMax: 4, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 338 SDtfs, 611 SDslu, 780 SDs, 0 SdLazy, 1557 SolverSat, 268 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 341 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 106 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 39 NumberOfFragments, 735 HoareAnnotationTreeSize, 9 FomulaSimplifications, 2405 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1233 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 327 NumberOfCodeBlocks, 313 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 313 ConstructedInterpolants, 0 QuantifiedInterpolants, 122851 SizeOfPredicates, 110 NumberOfNonLiveVariables, 1217 ConjunctsInSsa, 351 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 28/185 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...