./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.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_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/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 7f1b097c6afa8c7725240a0195cb226f841ae6ea .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 15:44:56,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:44:56,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:44:56,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:44:56,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:44:56,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:44:56,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:44:56,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:44:56,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:44:56,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:44:56,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:44:56,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:44:56,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:44:56,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:44:56,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:44:56,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:44:56,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:44:56,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:44:56,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:44:56,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:44:56,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:44:56,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:44:56,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:44:56,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:44:56,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:44:56,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:44:56,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:44:56,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:44:56,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:44:56,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:44:56,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:44:56,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:44:56,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:44:56,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:44:56,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:44:56,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:44:56,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:44:56,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:44:56,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:44:56,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:44:56,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:44:56,846 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:44:56,875 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:44:56,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:44:56,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:44:56,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:44:56,878 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:44:56,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:44:56,878 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:44:56,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:44:56,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:44:56,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:44:56,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:44:56,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:44:56,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:44:56,880 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:44:56,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:44:56,880 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:44:56,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:44:56,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:44:56,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:44:56,881 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:44:56,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:44:56,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:44:56,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:44:56,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:44:56,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:44:56,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:44:56,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:44:56,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:44:56,883 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:44:56,883 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_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f1b097c6afa8c7725240a0195cb226f841ae6ea [2020-12-01 15:44:57,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:44:57,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:44:57,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:44:57,216 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:44:57,218 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:44:57,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c [2020-12-01 15:44:57,304 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/bin/uautomizer/data/3830f27dc/d1b4d8275183493d8052b57b6000c147/FLAGa4665685f [2020-12-01 15:44:57,700 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:44:57,701 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c [2020-12-01 15:44:57,707 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/bin/uautomizer/data/3830f27dc/d1b4d8275183493d8052b57b6000c147/FLAGa4665685f [2020-12-01 15:44:58,104 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/bin/uautomizer/data/3830f27dc/d1b4d8275183493d8052b57b6000c147 [2020-12-01 15:44:58,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:44:58,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:44:58,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:44:58,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:44:58,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:44:58,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:44:58" (1/1) ... [2020-12-01 15:44:58,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@785fc8f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:58, skipping insertion in model container [2020-12-01 15:44:58,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:44:58" (1/1) ... [2020-12-01 15:44:58,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:44:58,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:44:58,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:44:58,312 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:44:58,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:44:58,366 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:44:58,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:58 WrapperNode [2020-12-01 15:44:58,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:44:58,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:44:58,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:44:58,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:44:58,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:58" (1/1) ... [2020-12-01 15:44:58,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:58" (1/1) ... [2020-12-01 15:44:58,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:44:58,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:44:58,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:44:58,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:44:58,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:58" (1/1) ... [2020-12-01 15:44:58,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:58" (1/1) ... [2020-12-01 15:44:58,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:58" (1/1) ... [2020-12-01 15:44:58,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:58" (1/1) ... [2020-12-01 15:44:58,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:58" (1/1) ... [2020-12-01 15:44:58,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:58" (1/1) ... [2020-12-01 15:44:58,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:58" (1/1) ... [2020-12-01 15:44:58,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:44:58,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:44:58,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:44:58,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:44:58,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/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 15:44:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:44:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:44:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:44:58,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:44:58,772 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:44:58,773 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-12-01 15:44:58,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:44:58 BoogieIcfgContainer [2020-12-01 15:44:58,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:44:58,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:44:58,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:44:58,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:44:58,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:44:58" (1/3) ... [2020-12-01 15:44:58,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553feeed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:44:58, skipping insertion in model container [2020-12-01 15:44:58,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:58" (2/3) ... [2020-12-01 15:44:58,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553feeed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:44:58, skipping insertion in model container [2020-12-01 15:44:58,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:44:58" (3/3) ... [2020-12-01 15:44:58,784 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound20.c [2020-12-01 15:44:58,812 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:44:58,815 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-01 15:44:58,826 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-01 15:44:58,849 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:44:58,850 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:44:58,850 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:44:58,850 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:44:58,850 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:44:58,850 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:44:58,850 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:44:58,851 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:44:58,898 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-12-01 15:44:58,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 15:44:58,903 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:44:58,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:44:58,904 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:44:58,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:44:58,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-01 15:44:58,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:44:58,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831241073] [2020-12-01 15:44:58,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:44:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:44:59,135 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 15:44:59,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831241073] [2020-12-01 15:44:59,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:44:59,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:44:59,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575740557] [2020-12-01 15:44:59,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:44:59,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:44:59,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:44:59,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:44:59,165 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-12-01 15:44:59,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:44:59,187 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-12-01 15:44:59,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:44:59,189 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-01 15:44:59,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:44:59,196 INFO L225 Difference]: With dead ends: 63 [2020-12-01 15:44:59,197 INFO L226 Difference]: Without dead ends: 29 [2020-12-01 15:44:59,199 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 15:44:59,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-01 15:44:59,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-01 15:44:59,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-01 15:44:59,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-12-01 15:44:59,237 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2020-12-01 15:44:59,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:44:59,238 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-12-01 15:44:59,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:44:59,238 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-12-01 15:44:59,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 15:44:59,239 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:44:59,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:44:59,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:44:59,240 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:44:59,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:44:59,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-01 15:44:59,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:44:59,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018092661] [2020-12-01 15:44:59,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:44:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:44:59,345 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 15:44:59,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018092661] [2020-12-01 15:44:59,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:44:59,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:44:59,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496804803] [2020-12-01 15:44:59,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:44:59,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:44:59,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:44:59,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:44:59,350 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 4 states. [2020-12-01 15:44:59,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:44:59,464 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-12-01 15:44:59,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:44:59,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-01 15:44:59,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:44:59,466 INFO L225 Difference]: With dead ends: 54 [2020-12-01 15:44:59,466 INFO L226 Difference]: Without dead ends: 50 [2020-12-01 15:44:59,468 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 15:44:59,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-01 15:44:59,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-12-01 15:44:59,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-01 15:44:59,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-12-01 15:44:59,478 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 7 [2020-12-01 15:44:59,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:44:59,478 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-12-01 15:44:59,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:44:59,479 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-12-01 15:44:59,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 15:44:59,480 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:44:59,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:44:59,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:44:59,483 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:44:59,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:44:59,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1186818322, now seen corresponding path program 1 times [2020-12-01 15:44:59,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:44:59,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744685033] [2020-12-01 15:44:59,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:44:59,504 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:44:59,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459152134] [2020-12-01 15:44:59,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/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 15:44:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:44:59,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-01 15:44:59,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:44:59,728 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 15:44:59,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744685033] [2020-12-01 15:44:59,732 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:44:59,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459152134] [2020-12-01 15:44:59,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:44:59,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 15:44:59,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39574242] [2020-12-01 15:44:59,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:44:59,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:44:59,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:44:59,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:44:59,740 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 6 states. [2020-12-01 15:44:59,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:44:59,888 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-12-01 15:44:59,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:44:59,888 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-01 15:44:59,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:44:59,899 INFO L225 Difference]: With dead ends: 51 [2020-12-01 15:44:59,899 INFO L226 Difference]: Without dead ends: 37 [2020-12-01 15:44:59,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 15:44:59,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-01 15:44:59,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-12-01 15:44:59,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-01 15:44:59,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-12-01 15:44:59,909 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 9 [2020-12-01 15:44:59,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:44:59,910 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-12-01 15:44:59,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:44:59,910 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-12-01 15:44:59,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:44:59,911 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:44:59,911 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:45:00,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-01 15:45:00,127 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:45:00,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:45:00,128 INFO L82 PathProgramCache]: Analyzing trace with hash -13364102, now seen corresponding path program 1 times [2020-12-01 15:45:00,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:45:00,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257393637] [2020-12-01 15:45:00,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:45:00,142 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:45:00,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1695294749] [2020-12-01 15:45:00,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/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 15:45:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:45:00,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-01 15:45:00,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:45:00,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:45:00,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257393637] [2020-12-01 15:45:00,288 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:45:00,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695294749] [2020-12-01 15:45:00,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:45:00,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-01 15:45:00,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249016535] [2020-12-01 15:45:00,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:45:00,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:45:00,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:45:00,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:45:00,291 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 5 states. [2020-12-01 15:45:00,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:45:00,411 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-12-01 15:45:00,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:45:00,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-01 15:45:00,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:45:00,416 INFO L225 Difference]: With dead ends: 61 [2020-12-01 15:45:00,416 INFO L226 Difference]: Without dead ends: 57 [2020-12-01 15:45:00,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:45:00,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-01 15:45:00,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2020-12-01 15:45:00,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-01 15:45:00,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-12-01 15:45:00,428 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 14 [2020-12-01 15:45:00,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:45:00,428 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-12-01 15:45:00,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:45:00,429 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-12-01 15:45:00,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 15:45:00,429 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:45:00,429 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:45:00,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:45:00,650 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:45:00,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:45:00,650 INFO L82 PathProgramCache]: Analyzing trace with hash 42186397, now seen corresponding path program 1 times [2020-12-01 15:45:00,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:45:00,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99716468] [2020-12-01 15:45:00,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:45:00,662 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:45:00,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1566582600] [2020-12-01 15:45:00,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/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 15:45:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:45:00,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-01 15:45:00,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:45:00,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:45:00,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99716468] [2020-12-01 15:45:00,839 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:45:00,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566582600] [2020-12-01 15:45:00,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:45:00,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-01 15:45:00,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110310069] [2020-12-01 15:45:00,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:45:00,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:45:00,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:45:00,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:45:00,847 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 7 states. [2020-12-01 15:45:00,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:45:00,991 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-12-01 15:45:00,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:45:00,991 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-01 15:45:00,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:45:00,992 INFO L225 Difference]: With dead ends: 58 [2020-12-01 15:45:00,992 INFO L226 Difference]: Without dead ends: 44 [2020-12-01 15:45:00,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 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 15:45:00,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-01 15:45:00,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-12-01 15:45:00,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-01 15:45:01,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-12-01 15:45:01,000 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 16 [2020-12-01 15:45:01,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:45:01,001 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-12-01 15:45:01,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:45:01,001 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-12-01 15:45:01,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 15:45:01,002 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:45:01,002 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-01 15:45:01,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:45:01,215 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:45:01,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:45:01,216 INFO L82 PathProgramCache]: Analyzing trace with hash 25658831, now seen corresponding path program 2 times [2020-12-01 15:45:01,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:45:01,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11316424] [2020-12-01 15:45:01,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:45:01,232 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:45:01,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [690247139] [2020-12-01 15:45:01,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/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 15:45:01,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:45:01,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:45:01,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-01 15:45:01,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:45:01,415 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 15:45:01,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11316424] [2020-12-01 15:45:01,416 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:45:01,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690247139] [2020-12-01 15:45:01,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:45:01,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-01 15:45:01,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746492340] [2020-12-01 15:45:01,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:45:01,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:45:01,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:45:01,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:45:01,422 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 6 states. [2020-12-01 15:45:01,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:45:01,607 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-12-01 15:45:01,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:45:01,607 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-12-01 15:45:01,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:45:01,608 INFO L225 Difference]: With dead ends: 68 [2020-12-01 15:45:01,608 INFO L226 Difference]: Without dead ends: 64 [2020-12-01 15:45:01,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:45:01,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-01 15:45:01,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2020-12-01 15:45:01,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-01 15:45:01,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-12-01 15:45:01,618 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 21 [2020-12-01 15:45:01,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:45:01,618 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-12-01 15:45:01,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:45:01,618 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-12-01 15:45:01,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 15:45:01,619 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:45:01,619 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-01 15:45:01,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:45:01,820 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:45:01,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:45:01,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1111480654, now seen corresponding path program 2 times [2020-12-01 15:45:01,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:45:01,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143818820] [2020-12-01 15:45:01,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:45:01,841 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:45:01,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039866348] [2020-12-01 15:45:01,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/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 15:45:01,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:45:01,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:45:01,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-01 15:45:01,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:45:02,039 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:45:02,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143818820] [2020-12-01 15:45:02,039 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:45:02,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039866348] [2020-12-01 15:45:02,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:45:02,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-01 15:45:02,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907061790] [2020-12-01 15:45:02,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:45:02,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:45:02,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:45:02,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:45:02,042 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 7 states. [2020-12-01 15:45:02,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:45:02,194 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2020-12-01 15:45:02,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:45:02,194 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-12-01 15:45:02,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:45:02,195 INFO L225 Difference]: With dead ends: 64 [2020-12-01 15:45:02,195 INFO L226 Difference]: Without dead ends: 60 [2020-12-01 15:45:02,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:45:02,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-01 15:45:02,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-12-01 15:45:02,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-01 15:45:02,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-12-01 15:45:02,202 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 23 [2020-12-01 15:45:02,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:45:02,203 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-12-01 15:45:02,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:45:02,203 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-12-01 15:45:02,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 15:45:02,204 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:45:02,204 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-01 15:45:02,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-01 15:45:02,423 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:45:02,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:45:02,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1314135125, now seen corresponding path program 1 times [2020-12-01 15:45:02,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:45:02,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528205412] [2020-12-01 15:45:02,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:45:02,434 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:45:02,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [680257661] [2020-12-01 15:45:02,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/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 15:45:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:45:02,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-01 15:45:02,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:45:02,633 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 15:45:02,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528205412] [2020-12-01 15:45:02,633 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:45:02,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680257661] [2020-12-01 15:45:02,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:45:02,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 15:45:02,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713693480] [2020-12-01 15:45:02,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:45:02,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:45:02,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:45:02,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:45:02,636 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 8 states. [2020-12-01 15:45:02,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:45:02,828 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-12-01 15:45:02,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:45:02,829 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-12-01 15:45:02,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:45:02,829 INFO L225 Difference]: With dead ends: 61 [2020-12-01 15:45:02,829 INFO L226 Difference]: Without dead ends: 51 [2020-12-01 15:45:02,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:45:02,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-01 15:45:02,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-12-01 15:45:02,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-01 15:45:02,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-12-01 15:45:02,849 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 25 [2020-12-01 15:45:02,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:45:02,849 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-12-01 15:45:02,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:45:02,849 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-12-01 15:45:02,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-01 15:45:02,850 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:45:02,850 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-01 15:45:03,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:45:03,067 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:45:03,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:45:03,068 INFO L82 PathProgramCache]: Analyzing trace with hash 778492634, now seen corresponding path program 3 times [2020-12-01 15:45:03,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:45:03,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873366289] [2020-12-01 15:45:03,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:45:03,078 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:45:03,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1949988763] [2020-12-01 15:45:03,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/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 15:45:03,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-01 15:45:03,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:45:03,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-01 15:45:03,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:45:03,255 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-01 15:45:03,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873366289] [2020-12-01 15:45:03,256 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:45:03,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949988763] [2020-12-01 15:45:03,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:45:03,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-01 15:45:03,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370969237] [2020-12-01 15:45:03,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:45:03,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:45:03,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:45:03,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:45:03,258 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 6 states. [2020-12-01 15:45:03,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:45:03,363 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-12-01 15:45:03,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:45:03,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-12-01 15:45:03,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:45:03,367 INFO L225 Difference]: With dead ends: 50 [2020-12-01 15:45:03,367 INFO L226 Difference]: Without dead ends: 46 [2020-12-01 15:45:03,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:45:03,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-01 15:45:03,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-12-01 15:45:03,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-01 15:45:03,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2020-12-01 15:45:03,388 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 28 [2020-12-01 15:45:03,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:45:03,388 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2020-12-01 15:45:03,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:45:03,388 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2020-12-01 15:45:03,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-01 15:45:03,391 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:45:03,391 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-01 15:45:03,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:45:03,592 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:45:03,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:45:03,593 INFO L82 PathProgramCache]: Analyzing trace with hash 807298301, now seen corresponding path program 3 times [2020-12-01 15:45:03,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:45:03,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740554454] [2020-12-01 15:45:03,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:45:03,608 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:45:03,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1940621789] [2020-12-01 15:45:03,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/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 15:45:03,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-01 15:45:03,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:45:03,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-01 15:45:03,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:45:18,845 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0))) (and (= (+ (* 2 (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~s~0)) (* 2 .cse0) (* 2 c_ULTIMATE.start_main_~s~0)) (+ (* c_ULTIMATE.start_main_~s~0 c_ULTIMATE.start_main_~s~0) (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0) 1)) (let ((.cse1 (= c_ULTIMATE.start_main_~s~0 (+ .cse0 (* 2 c_ULTIMATE.start_main_~a~0) 1)))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse1)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse1))))) is different from false [2020-12-01 15:45:27,245 WARN L197 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 18 [2020-12-01 15:45:27,283 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-01 15:45:27,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740554454] [2020-12-01 15:45:27,284 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:45:27,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940621789] [2020-12-01 15:45:27,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:45:27,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-01 15:45:27,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565128990] [2020-12-01 15:45:27,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 15:45:27,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:45:27,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 15:45:27,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=51, Unknown=5, NotChecked=14, Total=90 [2020-12-01 15:45:27,286 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 10 states. [2020-12-01 15:45:42,827 WARN L197 SmtUtils]: Spent 15.51 s on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-12-01 15:45:52,346 WARN L197 SmtUtils]: Spent 9.51 s on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2020-12-01 15:46:08,551 WARN L197 SmtUtils]: Spent 10.09 s on a formula simplification. DAG size of input: 26 DAG size of output: 20 [2020-12-01 15:46:29,423 WARN L197 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 33 [2020-12-01 15:46:34,873 WARN L197 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 37 DAG size of output: 27 [2020-12-01 15:46:40,960 WARN L197 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 25 [2020-12-01 15:46:43,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:46:43,008 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-12-01 15:46:43,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 15:46:43,009 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-12-01 15:46:43,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:46:43,010 INFO L225 Difference]: With dead ends: 46 [2020-12-01 15:46:43,010 INFO L226 Difference]: Without dead ends: 34 [2020-12-01 15:46:43,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 68.3s TimeCoverageRelationStatistics Valid=73, Invalid=166, Unknown=5, NotChecked=28, Total=272 [2020-12-01 15:46:43,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-01 15:46:43,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-12-01 15:46:43,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-01 15:46:43,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2020-12-01 15:46:43,018 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2020-12-01 15:46:43,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:46:43,018 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2020-12-01 15:46:43,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 15:46:43,018 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-12-01 15:46:43,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-01 15:46:43,019 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:46:43,019 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-01 15:46:43,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-01 15:46:43,243 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:46:43,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:46:43,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1575226400, now seen corresponding path program 2 times [2020-12-01 15:46:43,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:46:43,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769766024] [2020-12-01 15:46:43,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:46:43,269 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:46:43,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1519877400] [2020-12-01 15:46:43,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/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 15:46:43,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-01 15:46:43,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:46:43,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-01 15:46:43,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:46:43,541 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-01 15:46:43,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769766024] [2020-12-01 15:46:43,541 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:46:43,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519877400] [2020-12-01 15:46:43,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:46:43,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-01 15:46:43,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439840890] [2020-12-01 15:46:43,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:46:43,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:46:43,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:46:43,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:46:43,543 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 8 states. [2020-12-01 15:46:47,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:46:47,806 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-12-01 15:46:47,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 15:46:47,806 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-12-01 15:46:47,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:46:47,807 INFO L225 Difference]: With dead ends: 33 [2020-12-01 15:46:47,807 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:46:47,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-12-01 15:46:47,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:46:47,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:46:47,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:46:47,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:46:47,809 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-12-01 15:46:47,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:46:47,809 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:46:47,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:46:47,809 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:46:47,810 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:46:48,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:46:48,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 15:47:02,575 WARN L197 SmtUtils]: Spent 14.46 s on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-12-01 15:47:06,959 WARN L197 SmtUtils]: Spent 4.38 s on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-12-01 15:47:14,398 WARN L197 SmtUtils]: Spent 7.44 s on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2020-12-01 15:47:31,652 WARN L197 SmtUtils]: Spent 17.25 s on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2020-12-01 15:47:55,935 WARN L197 SmtUtils]: Spent 24.28 s on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-12-01 15:48:15,330 WARN L197 SmtUtils]: Spent 19.39 s on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2020-12-01 15:48:15,332 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-12-01 15:48:15,333 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-12-01 15:48:15,333 INFO L265 CegarLoopResult]: At program point L48(lines 20 49) the Hoare annotation is: true [2020-12-01 15:48:15,333 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 15:48:15,333 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-12-01 15:48:15,333 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 15:48:15,333 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 15:48:15,333 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-12-01 15:48:15,334 INFO L262 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-12-01 15:48:15,334 INFO L258 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: (let ((.cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse0 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ .cse0 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse1 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse1 .cse0 1)))) [2020-12-01 15:48:15,334 INFO L262 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-12-01 15:48:15,334 INFO L258 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: (let ((.cse2 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse1 (* ULTIMATE.start_main_~a~0 2))) (and (= ULTIMATE.start_main_~s~0 (let ((.cse0 (div (+ ULTIMATE.start_main_~t~0 (- 1)) 2))) (+ (* .cse0 2) (* .cse0 .cse0) 1))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ .cse1 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse2 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse2 .cse1 1)))) [2020-12-01 15:48:15,334 INFO L262 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-12-01 15:48:15,334 INFO L262 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-12-01 15:48:15,335 INFO L258 CegarLoopResult]: At program point L12-5(lines 36 37) the Hoare annotation is: (let ((.cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse0 (* ULTIMATE.start_main_~a~0 2))) (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ .cse0 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse1 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse1 .cse0 1)))) [2020-12-01 15:48:15,335 INFO L262 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-12-01 15:48:15,335 INFO L258 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: (or (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~a~0 2) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 4)) (= ULTIMATE.start_main_~s~0 9)) (let ((.cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse0 (* ULTIMATE.start_main_~a~0 2))) (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ .cse0 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse1 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse1 .cse0 1))))) [2020-12-01 15:48:15,335 INFO L262 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-12-01 15:48:15,335 INFO L258 CegarLoopResult]: At program point L12-9(lines 11 17) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~t~0 2))) (or (let ((.cse2 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse1 (* ULTIMATE.start_main_~a~0 2))) (and (= (+ .cse0 (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ .cse1 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse2 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse2 .cse1 1)))) (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= .cse0 (+ ULTIMATE.start_main_~s~0 1)) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 4))))) [2020-12-01 15:48:15,336 INFO L262 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-12-01 15:48:15,336 INFO L265 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: true [2020-12-01 15:48:15,336 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 15:48:15,336 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-12-01 15:48:15,336 INFO L262 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-12-01 15:48:15,336 INFO L262 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-12-01 15:48:15,336 INFO L262 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-12-01 15:48:15,337 INFO L262 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-12-01 15:48:15,337 INFO L262 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-12-01 15:48:15,337 INFO L262 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-12-01 15:48:15,337 INFO L262 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-12-01 15:48:15,337 INFO L258 CegarLoopResult]: At program point L30-2(lines 30 42) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse1 (* ULTIMATE.start_main_~a~0 2))) (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse0 4) (* ULTIMATE.start_main_~t~0 2))) (= (+ .cse1 1) ULTIMATE.start_main_~t~0) (= ULTIMATE.start_main_~s~0 (+ .cse0 ULTIMATE.start_main_~t~0))) (and (or (= ULTIMATE.start_assume_abort_if_not_~cond 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1) (= ULTIMATE.start_main_~s~0 (+ .cse0 .cse1 1))))) [2020-12-01 15:48:15,337 INFO L262 CegarLoopResult]: For program point L30-3(lines 30 42) no Hoare annotation was computed. [2020-12-01 15:48:15,338 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-12-01 15:48:15,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:48:15 BoogieIcfgContainer [2020-12-01 15:48:15,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:48:15,359 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:48:15,359 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:48:15,359 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:48:15,360 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:44:58" (3/4) ... [2020-12-01 15:48:15,363 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:48:15,374 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-01 15:48:15,374 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:48:15,374 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:48:15,375 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:48:15,427 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f1596e6c-a3a5-4cb4-8f66-67416ba7aab8/bin/uautomizer/witness.graphml [2020-12-01 15:48:15,428 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:48:15,429 INFO L168 Benchmark]: Toolchain (without parser) took 197319.77 ms. Allocated memory was 83.9 MB in the beginning and 121.6 MB in the end (delta: 37.7 MB). Free memory was 48.1 MB in the beginning and 83.7 MB in the end (delta: -35.6 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:48:15,429 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 83.9 MB. Free memory was 64.1 MB in the beginning and 64.1 MB in the end (delta: 48.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:48:15,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.88 ms. Allocated memory is still 83.9 MB. Free memory was 47.9 MB in the beginning and 61.5 MB in the end (delta: -13.6 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2020-12-01 15:48:15,430 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.68 ms. Allocated memory is still 83.9 MB. Free memory was 61.5 MB in the beginning and 59.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:48:15,430 INFO L168 Benchmark]: Boogie Preprocessor took 19.64 ms. Allocated memory is still 83.9 MB. Free memory was 59.9 MB in the beginning and 58.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:48:15,431 INFO L168 Benchmark]: RCFGBuilder took 337.58 ms. Allocated memory is still 83.9 MB. Free memory was 58.7 MB in the beginning and 44.7 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:48:15,431 INFO L168 Benchmark]: TraceAbstraction took 196582.17 ms. Allocated memory was 83.9 MB in the beginning and 121.6 MB in the end (delta: 37.7 MB). Free memory was 44.4 MB in the beginning and 86.8 MB in the end (delta: -42.4 MB). Peak memory consumption was 53.8 MB. Max. memory is 16.1 GB. [2020-12-01 15:48:15,432 INFO L168 Benchmark]: Witness Printer took 68.84 ms. Allocated memory is still 121.6 MB. Free memory was 86.8 MB in the beginning and 83.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:48:15,434 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 83.9 MB. Free memory was 64.1 MB in the beginning and 64.1 MB in the end (delta: 48.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 257.88 ms. Allocated memory is still 83.9 MB. Free memory was 47.9 MB in the beginning and 61.5 MB in the end (delta: -13.6 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.68 ms. Allocated memory is still 83.9 MB. Free memory was 61.5 MB in the beginning and 59.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.64 ms. Allocated memory is still 83.9 MB. Free memory was 59.9 MB in the beginning and 58.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 337.58 ms. Allocated memory is still 83.9 MB. Free memory was 58.7 MB in the beginning and 44.7 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 196582.17 ms. Allocated memory was 83.9 MB in the beginning and 121.6 MB in the end (delta: 37.7 MB). Free memory was 44.4 MB in the beginning and 86.8 MB in the end (delta: -42.4 MB). Peak memory consumption was 53.8 MB. Max. memory is 16.1 GB. * Witness Printer took 68.84 ms. Allocated memory is still 121.6 MB. Free memory was 86.8 MB in the beginning and 83.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((!(0 == cond) && a == 2) && s == t + 4) && s == 9) || ((((t * 2 + t * t + 1 == s * 4 && 1 == cond) && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((1 == cond && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((1 == cond && t * t + 1 == a * a * 4 + t * 2) && a * 2 + 1 == t) && s == a * a + t) || ((((cond == 0 || cond == 1) && a == 0) && t == 1) && s == a * a + a * 2 + 1) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((t * 2 + t * t + 1 == s * 4 && 1 == cond) && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((t * 2 + t * t + 1 == s * 4 && 1 == cond) && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1) || ((!(0 == cond) && t * 2 == s + 1) && s == t + 4) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((s == (t + -1) / 2 * 2 + (t + -1) / 2 * ((t + -1) / 2) + 1 && 1 == cond) && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 109.1s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 81.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 87.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 199 SDtfs, 235 SDslu, 440 SDs, 0 SdLazy, 671 SolverSat, 152 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 35.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 226 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 69.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=7, 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, 11 MinimizatonAttempts, 46 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 33 NumberOfFragments, 388 HoareAnnotationTreeSize, 8 FomulaSimplifications, 1761 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 195 FormulaSimplificationTreeSizeReductionInter, 87.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 24.7s InterpolantComputationTime, 212 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 201 ConstructedInterpolants, 0 QuantifiedInterpolants, 28916 SizeOfPredicates, 65 NumberOfNonLiveVariables, 759 ConjunctsInSsa, 208 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 92/150 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...