./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ssh-simplified/s3_clnt_2.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_49d64f0a-da43-40e2-b485-dc25baadfdf1/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_49d64f0a-da43-40e2-b485-dc25baadfdf1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_49d64f0a-da43-40e2-b485-dc25baadfdf1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_49d64f0a-da43-40e2-b485-dc25baadfdf1/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ssh-simplified/s3_clnt_2.cil-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_49d64f0a-da43-40e2-b485-dc25baadfdf1/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_49d64f0a-da43-40e2-b485-dc25baadfdf1/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d33dcc608b21d2bdbfa0a947775d4e23b857cf07 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 18:05:51,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:05:51,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:05:51,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:05:51,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:05:51,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:05:51,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:05:51,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:05:51,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:05:51,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:05:51,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:05:51,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:05:51,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:05:51,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:05:51,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:05:51,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:05:51,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:05:51,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:05:51,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:05:51,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:05:51,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:05:51,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:05:51,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:05:51,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:05:51,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:05:51,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:05:51,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:05:51,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:05:51,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:05:51,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:05:51,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:05:51,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:05:51,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:05:51,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:05:51,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:05:51,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:05:51,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:05:51,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:05:51,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:05:51,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:05:51,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:05:51,757 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_49d64f0a-da43-40e2-b485-dc25baadfdf1/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 18:05:51,766 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:05:51,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:05:51,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:05:51,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:05:51,767 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:05:51,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:05:51,768 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:05:51,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:05:51,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:05:51,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:05:51,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 18:05:51,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:05:51,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 18:05:51,769 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:05:51,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:05:51,769 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:05:51,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 18:05:51,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:05:51,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:05:51,769 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:05:51,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:05:51,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:05:51,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:05:51,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:05:51,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 18:05:51,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:05:51,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:05:51,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 18:05:51,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:05:51,770 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_49d64f0a-da43-40e2-b485-dc25baadfdf1/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(__VERIFIER_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 -> d33dcc608b21d2bdbfa0a947775d4e23b857cf07 [2019-12-07 18:05:51,868 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:05:51,878 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:05:51,880 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:05:51,882 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:05:51,882 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:05:51,882 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_49d64f0a-da43-40e2-b485-dc25baadfdf1/bin/uautomizer/../../sv-benchmarks/c/ssh-simplified/s3_clnt_2.cil-2.c [2019-12-07 18:05:51,920 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_49d64f0a-da43-40e2-b485-dc25baadfdf1/bin/uautomizer/data/938745a79/1535e82c45e4425d9c450a91cf42c274/FLAGdc83fe600 [2019-12-07 18:05:52,244 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:05:52,245 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_49d64f0a-da43-40e2-b485-dc25baadfdf1/sv-benchmarks/c/ssh-simplified/s3_clnt_2.cil-2.c [2019-12-07 18:05:52,254 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_49d64f0a-da43-40e2-b485-dc25baadfdf1/bin/uautomizer/data/938745a79/1535e82c45e4425d9c450a91cf42c274/FLAGdc83fe600 [2019-12-07 18:05:52,263 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_49d64f0a-da43-40e2-b485-dc25baadfdf1/bin/uautomizer/data/938745a79/1535e82c45e4425d9c450a91cf42c274 [2019-12-07 18:05:52,265 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:05:52,266 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:05:52,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:05:52,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:05:52,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:05:52,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:05:52" (1/1) ... [2019-12-07 18:05:52,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14a9ff68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:05:52, skipping insertion in model container [2019-12-07 18:05:52,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:05:52" (1/1) ... [2019-12-07 18:05:52,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:05:52,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:05:52,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:05:52,501 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:05:52,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:05:52,547 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:05:52,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:05:52 WrapperNode [2019-12-07 18:05:52,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:05:52,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:05:52,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:05:52,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:05:52,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:05:52" (1/1) ... [2019-12-07 18:05:52,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:05:52" (1/1) ... [2019-12-07 18:05:52,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:05:52,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:05:52,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:05:52,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:05:52,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:05:52" (1/1) ... [2019-12-07 18:05:52,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:05:52" (1/1) ... [2019-12-07 18:05:52,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:05:52" (1/1) ... [2019-12-07 18:05:52,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:05:52" (1/1) ... [2019-12-07 18:05:52,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:05:52" (1/1) ... [2019-12-07 18:05:52,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:05:52" (1/1) ... [2019-12-07 18:05:52,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:05:52" (1/1) ... [2019-12-07 18:05:52,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:05:52,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:05:52,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:05:52,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:05:52,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:05:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49d64f0a-da43-40e2-b485-dc25baadfdf1/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 [2019-12-07 18:05:52,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:05:52,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:05:52,727 WARN L738 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-12-07 18:05:53,003 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2019-12-07 18:05:53,003 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2019-12-07 18:05:53,004 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:05:53,004 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 18:05:53,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:05:53 BoogieIcfgContainer [2019-12-07 18:05:53,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:05:53,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:05:53,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:05:53,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:05:53,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:05:52" (1/3) ... [2019-12-07 18:05:53,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@88fe4c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:05:53, skipping insertion in model container [2019-12-07 18:05:53,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:05:52" (2/3) ... [2019-12-07 18:05:53,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@88fe4c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:05:53, skipping insertion in model container [2019-12-07 18:05:53,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:05:53" (3/3) ... [2019-12-07 18:05:53,010 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.cil-2.c [2019-12-07 18:05:53,016 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:05:53,021 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 18:05:53,028 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 18:05:53,044 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:05:53,044 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 18:05:53,044 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:05:53,044 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:05:53,044 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:05:53,044 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:05:53,044 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:05:53,044 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:05:53,056 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2019-12-07 18:05:53,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-07 18:05:53,060 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:05:53,061 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:05:53,061 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:05:53,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:05:53,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1449576961, now seen corresponding path program 1 times [2019-12-07 18:05:53,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:05:53,071 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073033394] [2019-12-07 18:05:53,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:05:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:53,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:05:53,193 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073033394] [2019-12-07 18:05:53,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:05:53,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 18:05:53,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754735851] [2019-12-07 18:05:53,197 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:05:53,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:05:53,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:05:53,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:53,208 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 3 states. [2019-12-07 18:05:53,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:05:53,333 INFO L93 Difference]: Finished difference Result 251 states and 426 transitions. [2019-12-07 18:05:53,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:05:53,335 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-12-07 18:05:53,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:05:53,344 INFO L225 Difference]: With dead ends: 251 [2019-12-07 18:05:53,344 INFO L226 Difference]: Without dead ends: 114 [2019-12-07 18:05:53,347 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:53,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-12-07 18:05:53,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2019-12-07 18:05:53,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-12-07 18:05:53,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 171 transitions. [2019-12-07 18:05:53,382 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 171 transitions. Word has length 23 [2019-12-07 18:05:53,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:05:53,382 INFO L462 AbstractCegarLoop]: Abstraction has 114 states and 171 transitions. [2019-12-07 18:05:53,382 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:05:53,382 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 171 transitions. [2019-12-07 18:05:53,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-12-07 18:05:53,384 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:05:53,384 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:05:53,384 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:05:53,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:05:53,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1395170557, now seen corresponding path program 1 times [2019-12-07 18:05:53,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:05:53,385 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273550678] [2019-12-07 18:05:53,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:05:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:53,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:05:53,428 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273550678] [2019-12-07 18:05:53,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:05:53,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:05:53,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472079412] [2019-12-07 18:05:53,429 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:05:53,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:05:53,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:05:53,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:53,430 INFO L87 Difference]: Start difference. First operand 114 states and 171 transitions. Second operand 3 states. [2019-12-07 18:05:53,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:05:53,512 INFO L93 Difference]: Finished difference Result 238 states and 361 transitions. [2019-12-07 18:05:53,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:05:53,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-12-07 18:05:53,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:05:53,514 INFO L225 Difference]: With dead ends: 238 [2019-12-07 18:05:53,514 INFO L226 Difference]: Without dead ends: 133 [2019-12-07 18:05:53,515 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:53,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2019-12-07 18:05:53,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2019-12-07 18:05:53,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-12-07 18:05:53,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 191 transitions. [2019-12-07 18:05:53,524 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 191 transitions. Word has length 36 [2019-12-07 18:05:53,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:05:53,524 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 191 transitions. [2019-12-07 18:05:53,524 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:05:53,524 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 191 transitions. [2019-12-07 18:05:53,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-12-07 18:05:53,525 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:05:53,526 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:05:53,526 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:05:53,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:05:53,526 INFO L82 PathProgramCache]: Analyzing trace with hash -134115002, now seen corresponding path program 1 times [2019-12-07 18:05:53,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:05:53,526 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635439531] [2019-12-07 18:05:53,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:05:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 18:05:53,569 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635439531] [2019-12-07 18:05:53,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:05:53,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:05:53,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709029887] [2019-12-07 18:05:53,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:05:53,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:05:53,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:05:53,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:53,571 INFO L87 Difference]: Start difference. First operand 129 states and 191 transitions. Second operand 3 states. [2019-12-07 18:05:53,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:05:53,653 INFO L93 Difference]: Finished difference Result 270 states and 405 transitions. [2019-12-07 18:05:53,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:05:53,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2019-12-07 18:05:53,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:05:53,655 INFO L225 Difference]: With dead ends: 270 [2019-12-07 18:05:53,655 INFO L226 Difference]: Without dead ends: 150 [2019-12-07 18:05:53,656 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:53,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-12-07 18:05:53,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 146. [2019-12-07 18:05:53,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-12-07 18:05:53,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 213 transitions. [2019-12-07 18:05:53,664 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 213 transitions. Word has length 50 [2019-12-07 18:05:53,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:05:53,664 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 213 transitions. [2019-12-07 18:05:53,664 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:05:53,664 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 213 transitions. [2019-12-07 18:05:53,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-12-07 18:05:53,666 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:05:53,666 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:05:53,666 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:05:53,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:05:53,666 INFO L82 PathProgramCache]: Analyzing trace with hash -121422705, now seen corresponding path program 1 times [2019-12-07 18:05:53,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:05:53,667 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954302192] [2019-12-07 18:05:53,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:05:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:53,712 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-12-07 18:05:53,712 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954302192] [2019-12-07 18:05:53,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:05:53,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:05:53,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574788347] [2019-12-07 18:05:53,713 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:05:53,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:05:53,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:05:53,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:53,713 INFO L87 Difference]: Start difference. First operand 146 states and 213 transitions. Second operand 3 states. [2019-12-07 18:05:53,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:05:53,832 INFO L93 Difference]: Finished difference Result 334 states and 502 transitions. [2019-12-07 18:05:53,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:05:53,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-12-07 18:05:53,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:05:53,834 INFO L225 Difference]: With dead ends: 334 [2019-12-07 18:05:53,834 INFO L226 Difference]: Without dead ends: 196 [2019-12-07 18:05:53,834 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:53,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2019-12-07 18:05:53,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 187. [2019-12-07 18:05:53,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2019-12-07 18:05:53,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 263 transitions. [2019-12-07 18:05:53,842 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 263 transitions. Word has length 67 [2019-12-07 18:05:53,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:05:53,843 INFO L462 AbstractCegarLoop]: Abstraction has 187 states and 263 transitions. [2019-12-07 18:05:53,843 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:05:53,843 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 263 transitions. [2019-12-07 18:05:53,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-12-07 18:05:53,844 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:05:53,844 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:05:53,845 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:05:53,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:05:53,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1926861039, now seen corresponding path program 1 times [2019-12-07 18:05:53,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:05:53,845 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83408431] [2019-12-07 18:05:53,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:05:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:53,880 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-12-07 18:05:53,881 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83408431] [2019-12-07 18:05:53,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:05:53,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:05:53,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994207693] [2019-12-07 18:05:53,881 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:05:53,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:05:53,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:05:53,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:53,882 INFO L87 Difference]: Start difference. First operand 187 states and 263 transitions. Second operand 3 states. [2019-12-07 18:05:53,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:05:53,960 INFO L93 Difference]: Finished difference Result 389 states and 554 transitions. [2019-12-07 18:05:53,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:05:53,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-12-07 18:05:53,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:05:53,962 INFO L225 Difference]: With dead ends: 389 [2019-12-07 18:05:53,962 INFO L226 Difference]: Without dead ends: 211 [2019-12-07 18:05:53,963 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:53,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2019-12-07 18:05:53,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 206. [2019-12-07 18:05:53,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2019-12-07 18:05:53,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 287 transitions. [2019-12-07 18:05:53,972 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 287 transitions. Word has length 67 [2019-12-07 18:05:53,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:05:53,973 INFO L462 AbstractCegarLoop]: Abstraction has 206 states and 287 transitions. [2019-12-07 18:05:53,973 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:05:53,973 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 287 transitions. [2019-12-07 18:05:53,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-12-07 18:05:53,975 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:05:53,975 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:05:53,975 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:05:53,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:05:53,976 INFO L82 PathProgramCache]: Analyzing trace with hash 398996882, now seen corresponding path program 1 times [2019-12-07 18:05:53,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:05:53,976 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007177856] [2019-12-07 18:05:53,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:05:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:54,028 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-12-07 18:05:54,028 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007177856] [2019-12-07 18:05:54,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:05:54,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:05:54,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380119692] [2019-12-07 18:05:54,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:05:54,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:05:54,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:05:54,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:54,030 INFO L87 Difference]: Start difference. First operand 206 states and 287 transitions. Second operand 3 states. [2019-12-07 18:05:54,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:05:54,102 INFO L93 Difference]: Finished difference Result 427 states and 603 transitions. [2019-12-07 18:05:54,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:05:54,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2019-12-07 18:05:54,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:05:54,104 INFO L225 Difference]: With dead ends: 427 [2019-12-07 18:05:54,105 INFO L226 Difference]: Without dead ends: 230 [2019-12-07 18:05:54,105 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:54,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2019-12-07 18:05:54,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 227. [2019-12-07 18:05:54,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2019-12-07 18:05:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 313 transitions. [2019-12-07 18:05:54,111 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 313 transitions. Word has length 84 [2019-12-07 18:05:54,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:05:54,112 INFO L462 AbstractCegarLoop]: Abstraction has 227 states and 313 transitions. [2019-12-07 18:05:54,112 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:05:54,112 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 313 transitions. [2019-12-07 18:05:54,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-12-07 18:05:54,113 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:05:54,114 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:05:54,114 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:05:54,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:05:54,114 INFO L82 PathProgramCache]: Analyzing trace with hash 90409290, now seen corresponding path program 1 times [2019-12-07 18:05:54,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:05:54,115 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698489386] [2019-12-07 18:05:54,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:05:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-12-07 18:05:54,160 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698489386] [2019-12-07 18:05:54,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:05:54,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:05:54,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900196169] [2019-12-07 18:05:54,162 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:05:54,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:05:54,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:05:54,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:54,162 INFO L87 Difference]: Start difference. First operand 227 states and 313 transitions. Second operand 3 states. [2019-12-07 18:05:54,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:05:54,186 INFO L93 Difference]: Finished difference Result 661 states and 912 transitions. [2019-12-07 18:05:54,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:05:54,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2019-12-07 18:05:54,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:05:54,188 INFO L225 Difference]: With dead ends: 661 [2019-12-07 18:05:54,188 INFO L226 Difference]: Without dead ends: 443 [2019-12-07 18:05:54,189 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:54,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2019-12-07 18:05:54,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2019-12-07 18:05:54,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2019-12-07 18:05:54,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 609 transitions. [2019-12-07 18:05:54,197 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 609 transitions. Word has length 104 [2019-12-07 18:05:54,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:05:54,198 INFO L462 AbstractCegarLoop]: Abstraction has 443 states and 609 transitions. [2019-12-07 18:05:54,198 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:05:54,198 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 609 transitions. [2019-12-07 18:05:54,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-12-07 18:05:54,199 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:05:54,199 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:05:54,199 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:05:54,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:05:54,199 INFO L82 PathProgramCache]: Analyzing trace with hash 935055156, now seen corresponding path program 1 times [2019-12-07 18:05:54,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:05:54,200 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862837072] [2019-12-07 18:05:54,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:05:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:54,232 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-12-07 18:05:54,233 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862837072] [2019-12-07 18:05:54,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:05:54,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:05:54,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129623070] [2019-12-07 18:05:54,233 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:05:54,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:05:54,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:05:54,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:54,234 INFO L87 Difference]: Start difference. First operand 443 states and 609 transitions. Second operand 3 states. [2019-12-07 18:05:54,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:05:54,259 INFO L93 Difference]: Finished difference Result 661 states and 909 transitions. [2019-12-07 18:05:54,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:05:54,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2019-12-07 18:05:54,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:05:54,262 INFO L225 Difference]: With dead ends: 661 [2019-12-07 18:05:54,262 INFO L226 Difference]: Without dead ends: 659 [2019-12-07 18:05:54,263 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:54,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-12-07 18:05:54,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2019-12-07 18:05:54,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2019-12-07 18:05:54,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 907 transitions. [2019-12-07 18:05:54,274 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 907 transitions. Word has length 106 [2019-12-07 18:05:54,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:05:54,274 INFO L462 AbstractCegarLoop]: Abstraction has 659 states and 907 transitions. [2019-12-07 18:05:54,274 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:05:54,274 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 907 transitions. [2019-12-07 18:05:54,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-12-07 18:05:54,276 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:05:54,276 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:05:54,276 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:05:54,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:05:54,276 INFO L82 PathProgramCache]: Analyzing trace with hash -365763014, now seen corresponding path program 1 times [2019-12-07 18:05:54,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:05:54,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121392780] [2019-12-07 18:05:54,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:05:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:54,318 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 311 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2019-12-07 18:05:54,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121392780] [2019-12-07 18:05:54,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:05:54,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:05:54,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621917244] [2019-12-07 18:05:54,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:05:54,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:05:54,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:05:54,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:54,320 INFO L87 Difference]: Start difference. First operand 659 states and 907 transitions. Second operand 3 states. [2019-12-07 18:05:54,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:05:54,427 INFO L93 Difference]: Finished difference Result 1462 states and 2068 transitions. [2019-12-07 18:05:54,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:05:54,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2019-12-07 18:05:54,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:05:54,431 INFO L225 Difference]: With dead ends: 1462 [2019-12-07 18:05:54,431 INFO L226 Difference]: Without dead ends: 809 [2019-12-07 18:05:54,432 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:54,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2019-12-07 18:05:54,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 776. [2019-12-07 18:05:54,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 776 states. [2019-12-07 18:05:54,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1096 transitions. [2019-12-07 18:05:54,447 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1096 transitions. Word has length 175 [2019-12-07 18:05:54,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:05:54,447 INFO L462 AbstractCegarLoop]: Abstraction has 776 states and 1096 transitions. [2019-12-07 18:05:54,447 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:05:54,447 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1096 transitions. [2019-12-07 18:05:54,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-12-07 18:05:54,449 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:05:54,449 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:05:54,450 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:05:54,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:05:54,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1933345798, now seen corresponding path program 2 times [2019-12-07 18:05:54,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:05:54,450 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020866570] [2019-12-07 18:05:54,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:05:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:54,488 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 327 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2019-12-07 18:05:54,489 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020866570] [2019-12-07 18:05:54,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:05:54,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:05:54,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384231482] [2019-12-07 18:05:54,489 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:05:54,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:05:54,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:05:54,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:54,490 INFO L87 Difference]: Start difference. First operand 776 states and 1096 transitions. Second operand 3 states. [2019-12-07 18:05:54,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:05:54,611 INFO L93 Difference]: Finished difference Result 1824 states and 2649 transitions. [2019-12-07 18:05:54,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:05:54,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2019-12-07 18:05:54,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:05:54,615 INFO L225 Difference]: With dead ends: 1824 [2019-12-07 18:05:54,615 INFO L226 Difference]: Without dead ends: 1006 [2019-12-07 18:05:54,616 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:54,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2019-12-07 18:05:54,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 965. [2019-12-07 18:05:54,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2019-12-07 18:05:54,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1348 transitions. [2019-12-07 18:05:54,633 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1348 transitions. Word has length 188 [2019-12-07 18:05:54,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:05:54,633 INFO L462 AbstractCegarLoop]: Abstraction has 965 states and 1348 transitions. [2019-12-07 18:05:54,633 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:05:54,633 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1348 transitions. [2019-12-07 18:05:54,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-12-07 18:05:54,635 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:05:54,636 INFO L410 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:05:54,636 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:05:54,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:05:54,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1781023665, now seen corresponding path program 1 times [2019-12-07 18:05:54,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:05:54,636 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025143866] [2019-12-07 18:05:54,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:05:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:54,677 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 404 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2019-12-07 18:05:54,677 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025143866] [2019-12-07 18:05:54,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:05:54,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:05:54,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628173704] [2019-12-07 18:05:54,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:05:54,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:05:54,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:05:54,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:54,678 INFO L87 Difference]: Start difference. First operand 965 states and 1348 transitions. Second operand 3 states. [2019-12-07 18:05:54,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:05:54,793 INFO L93 Difference]: Finished difference Result 2080 states and 2926 transitions. [2019-12-07 18:05:54,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:05:54,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2019-12-07 18:05:54,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:05:54,799 INFO L225 Difference]: With dead ends: 2080 [2019-12-07 18:05:54,799 INFO L226 Difference]: Without dead ends: 1079 [2019-12-07 18:05:54,801 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:54,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2019-12-07 18:05:54,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1040. [2019-12-07 18:05:54,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2019-12-07 18:05:54,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1444 transitions. [2019-12-07 18:05:54,826 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1444 transitions. Word has length 209 [2019-12-07 18:05:54,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:05:54,827 INFO L462 AbstractCegarLoop]: Abstraction has 1040 states and 1444 transitions. [2019-12-07 18:05:54,827 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:05:54,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1444 transitions. [2019-12-07 18:05:54,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-12-07 18:05:54,830 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:05:54,831 INFO L410 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 11, 11, 11, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:05:54,831 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:05:54,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:05:54,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1647744508, now seen corresponding path program 1 times [2019-12-07 18:05:54,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:05:54,831 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162912213] [2019-12-07 18:05:54,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:05:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 479 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2019-12-07 18:05:54,900 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162912213] [2019-12-07 18:05:54,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:05:54,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:05:54,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308718658] [2019-12-07 18:05:54,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:05:54,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:05:54,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:05:54,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:54,901 INFO L87 Difference]: Start difference. First operand 1040 states and 1444 transitions. Second operand 3 states. [2019-12-07 18:05:55,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:05:55,017 INFO L93 Difference]: Finished difference Result 2230 states and 3115 transitions. [2019-12-07 18:05:55,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:05:55,018 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2019-12-07 18:05:55,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:05:55,024 INFO L225 Difference]: With dead ends: 2230 [2019-12-07 18:05:55,024 INFO L226 Difference]: Without dead ends: 1160 [2019-12-07 18:05:55,026 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:55,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2019-12-07 18:05:55,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1124. [2019-12-07 18:05:55,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1124 states. [2019-12-07 18:05:55,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1555 transitions. [2019-12-07 18:05:55,055 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1555 transitions. Word has length 233 [2019-12-07 18:05:55,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:05:55,055 INFO L462 AbstractCegarLoop]: Abstraction has 1124 states and 1555 transitions. [2019-12-07 18:05:55,055 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:05:55,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1555 transitions. [2019-12-07 18:05:55,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-12-07 18:05:55,059 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:05:55,059 INFO L410 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 11, 11, 11, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:05:55,059 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:05:55,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:05:55,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1766185982, now seen corresponding path program 1 times [2019-12-07 18:05:55,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:05:55,060 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539449228] [2019-12-07 18:05:55,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:05:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:55,139 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 479 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2019-12-07 18:05:55,139 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539449228] [2019-12-07 18:05:55,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:05:55,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:05:55,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219793516] [2019-12-07 18:05:55,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:05:55,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:05:55,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:05:55,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:55,141 INFO L87 Difference]: Start difference. First operand 1124 states and 1555 transitions. Second operand 3 states. [2019-12-07 18:05:55,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:05:55,274 INFO L93 Difference]: Finished difference Result 2398 states and 3340 transitions. [2019-12-07 18:05:55,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:05:55,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2019-12-07 18:05:55,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:05:55,279 INFO L225 Difference]: With dead ends: 2398 [2019-12-07 18:05:55,279 INFO L226 Difference]: Without dead ends: 1256 [2019-12-07 18:05:55,280 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:55,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2019-12-07 18:05:55,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1217. [2019-12-07 18:05:55,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2019-12-07 18:05:55,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1687 transitions. [2019-12-07 18:05:55,303 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1687 transitions. Word has length 233 [2019-12-07 18:05:55,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:05:55,303 INFO L462 AbstractCegarLoop]: Abstraction has 1217 states and 1687 transitions. [2019-12-07 18:05:55,303 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:05:55,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1687 transitions. [2019-12-07 18:05:55,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2019-12-07 18:05:55,306 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:05:55,306 INFO L410 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 12, 12, 12, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:05:55,306 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:05:55,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:05:55,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1276246012, now seen corresponding path program 1 times [2019-12-07 18:05:55,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:05:55,307 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172123127] [2019-12-07 18:05:55,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:05:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:55,376 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 622 proven. 0 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2019-12-07 18:05:55,376 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172123127] [2019-12-07 18:05:55,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:05:55,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:05:55,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419929959] [2019-12-07 18:05:55,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:05:55,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:05:55,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:05:55,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:55,377 INFO L87 Difference]: Start difference. First operand 1217 states and 1687 transitions. Second operand 3 states. [2019-12-07 18:05:55,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:05:55,413 INFO L93 Difference]: Finished difference Result 3630 states and 5032 transitions. [2019-12-07 18:05:55,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:05:55,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 263 [2019-12-07 18:05:55,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:05:55,426 INFO L225 Difference]: With dead ends: 3630 [2019-12-07 18:05:55,426 INFO L226 Difference]: Without dead ends: 2422 [2019-12-07 18:05:55,428 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:55,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2019-12-07 18:05:55,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 2420. [2019-12-07 18:05:55,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2420 states. [2019-12-07 18:05:55,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 3354 transitions. [2019-12-07 18:05:55,488 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 3354 transitions. Word has length 263 [2019-12-07 18:05:55,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:05:55,488 INFO L462 AbstractCegarLoop]: Abstraction has 2420 states and 3354 transitions. [2019-12-07 18:05:55,488 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:05:55,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 3354 transitions. [2019-12-07 18:05:55,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2019-12-07 18:05:55,492 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:05:55,493 INFO L410 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 12, 12, 12, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:05:55,493 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:05:55,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:05:55,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1394687486, now seen corresponding path program 1 times [2019-12-07 18:05:55,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:05:55,493 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78591795] [2019-12-07 18:05:55,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:05:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:55,550 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 554 proven. 0 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2019-12-07 18:05:55,551 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78591795] [2019-12-07 18:05:55,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:05:55,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:05:55,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924369918] [2019-12-07 18:05:55,551 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:05:55,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:05:55,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:05:55,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:55,552 INFO L87 Difference]: Start difference. First operand 2420 states and 3354 transitions. Second operand 3 states. [2019-12-07 18:05:55,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:05:55,678 INFO L93 Difference]: Finished difference Result 5143 states and 7169 transitions. [2019-12-07 18:05:55,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:05:55,678 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 263 [2019-12-07 18:05:55,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:05:55,688 INFO L225 Difference]: With dead ends: 5143 [2019-12-07 18:05:55,688 INFO L226 Difference]: Without dead ends: 2702 [2019-12-07 18:05:55,691 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:55,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2702 states. [2019-12-07 18:05:55,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2702 to 2630. [2019-12-07 18:05:55,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2630 states. [2019-12-07 18:05:55,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2630 states to 2630 states and 3666 transitions. [2019-12-07 18:05:55,752 INFO L78 Accepts]: Start accepts. Automaton has 2630 states and 3666 transitions. Word has length 263 [2019-12-07 18:05:55,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:05:55,752 INFO L462 AbstractCegarLoop]: Abstraction has 2630 states and 3666 transitions. [2019-12-07 18:05:55,753 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:05:55,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2630 states and 3666 transitions. [2019-12-07 18:05:55,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2019-12-07 18:05:55,759 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:05:55,760 INFO L410 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 13, 13, 13, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:05:55,760 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:05:55,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:05:55,760 INFO L82 PathProgramCache]: Analyzing trace with hash -777084420, now seen corresponding path program 1 times [2019-12-07 18:05:55,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:05:55,761 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371765620] [2019-12-07 18:05:55,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:05:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:55,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1169 backedges. 629 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2019-12-07 18:05:55,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371765620] [2019-12-07 18:05:55,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:05:55,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:05:55,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563044631] [2019-12-07 18:05:55,831 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:05:55,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:05:55,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:05:55,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:55,832 INFO L87 Difference]: Start difference. First operand 2630 states and 3666 transitions. Second operand 3 states. [2019-12-07 18:05:55,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:05:55,952 INFO L93 Difference]: Finished difference Result 5335 states and 7421 transitions. [2019-12-07 18:05:55,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:05:55,953 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 298 [2019-12-07 18:05:55,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:05:55,963 INFO L225 Difference]: With dead ends: 5335 [2019-12-07 18:05:55,963 INFO L226 Difference]: Without dead ends: 2696 [2019-12-07 18:05:55,966 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:55,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2019-12-07 18:05:56,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 2624. [2019-12-07 18:05:56,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2624 states. [2019-12-07 18:05:56,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2624 states to 2624 states and 3630 transitions. [2019-12-07 18:05:56,011 INFO L78 Accepts]: Start accepts. Automaton has 2624 states and 3630 transitions. Word has length 298 [2019-12-07 18:05:56,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:05:56,012 INFO L462 AbstractCegarLoop]: Abstraction has 2624 states and 3630 transitions. [2019-12-07 18:05:56,012 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:05:56,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2624 states and 3630 transitions. [2019-12-07 18:05:56,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2019-12-07 18:05:56,015 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:05:56,016 INFO L410 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:05:56,016 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:05:56,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:05:56,016 INFO L82 PathProgramCache]: Analyzing trace with hash -844895981, now seen corresponding path program 1 times [2019-12-07 18:05:56,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:05:56,016 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115985571] [2019-12-07 18:05:56,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:05:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:56,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 663 proven. 0 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2019-12-07 18:05:56,090 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115985571] [2019-12-07 18:05:56,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:05:56,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:05:56,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315511470] [2019-12-07 18:05:56,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:05:56,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:05:56,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:05:56,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:56,091 INFO L87 Difference]: Start difference. First operand 2624 states and 3630 transitions. Second operand 3 states. [2019-12-07 18:05:56,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:05:56,217 INFO L93 Difference]: Finished difference Result 5299 states and 7319 transitions. [2019-12-07 18:05:56,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:05:56,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 321 [2019-12-07 18:05:56,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:05:56,227 INFO L225 Difference]: With dead ends: 5299 [2019-12-07 18:05:56,227 INFO L226 Difference]: Without dead ends: 2684 [2019-12-07 18:05:56,229 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:56,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2019-12-07 18:05:56,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 2624. [2019-12-07 18:05:56,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2624 states. [2019-12-07 18:05:56,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2624 states to 2624 states and 3576 transitions. [2019-12-07 18:05:56,278 INFO L78 Accepts]: Start accepts. Automaton has 2624 states and 3576 transitions. Word has length 321 [2019-12-07 18:05:56,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:05:56,279 INFO L462 AbstractCegarLoop]: Abstraction has 2624 states and 3576 transitions. [2019-12-07 18:05:56,279 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:05:56,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2624 states and 3576 transitions. [2019-12-07 18:05:56,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2019-12-07 18:05:56,283 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:05:56,283 INFO L410 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 14, 14, 14, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:05:56,284 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:05:56,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:05:56,284 INFO L82 PathProgramCache]: Analyzing trace with hash 798876465, now seen corresponding path program 1 times [2019-12-07 18:05:56,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:05:56,284 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237976138] [2019-12-07 18:05:56,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:05:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 731 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2019-12-07 18:05:56,377 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237976138] [2019-12-07 18:05:56,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:05:56,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:05:56,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110643199] [2019-12-07 18:05:56,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:05:56,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:05:56,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:05:56,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:56,378 INFO L87 Difference]: Start difference. First operand 2624 states and 3576 transitions. Second operand 3 states. [2019-12-07 18:05:56,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:05:56,499 INFO L93 Difference]: Finished difference Result 5545 states and 7499 transitions. [2019-12-07 18:05:56,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:05:56,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 335 [2019-12-07 18:05:56,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:05:56,511 INFO L225 Difference]: With dead ends: 5545 [2019-12-07 18:05:56,511 INFO L226 Difference]: Without dead ends: 2930 [2019-12-07 18:05:56,513 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:56,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2019-12-07 18:05:56,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 2714. [2019-12-07 18:05:56,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2714 states. [2019-12-07 18:05:56,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 3696 transitions. [2019-12-07 18:05:56,555 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 3696 transitions. Word has length 335 [2019-12-07 18:05:56,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:05:56,556 INFO L462 AbstractCegarLoop]: Abstraction has 2714 states and 3696 transitions. [2019-12-07 18:05:56,556 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:05:56,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 3696 transitions. [2019-12-07 18:05:56,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2019-12-07 18:05:56,559 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:05:56,560 INFO L410 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 14, 14, 14, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:05:56,560 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:05:56,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:05:56,560 INFO L82 PathProgramCache]: Analyzing trace with hash 668596020, now seen corresponding path program 1 times [2019-12-07 18:05:56,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:05:56,560 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568743725] [2019-12-07 18:05:56,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:05:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:56,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 871 proven. 0 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2019-12-07 18:05:56,663 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568743725] [2019-12-07 18:05:56,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:05:56,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:05:56,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227136955] [2019-12-07 18:05:56,664 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:05:56,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:05:56,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:05:56,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:56,664 INFO L87 Difference]: Start difference. First operand 2714 states and 3696 transitions. Second operand 3 states. [2019-12-07 18:05:56,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:05:56,717 INFO L93 Difference]: Finished difference Result 7734 states and 10582 transitions. [2019-12-07 18:05:56,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:05:56,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 336 [2019-12-07 18:05:56,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:05:56,737 INFO L225 Difference]: With dead ends: 7734 [2019-12-07 18:05:56,737 INFO L226 Difference]: Without dead ends: 5029 [2019-12-07 18:05:56,740 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:56,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5029 states. [2019-12-07 18:05:56,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5029 to 5027. [2019-12-07 18:05:56,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5027 states. [2019-12-07 18:05:56,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5027 states to 5027 states and 6880 transitions. [2019-12-07 18:05:56,822 INFO L78 Accepts]: Start accepts. Automaton has 5027 states and 6880 transitions. Word has length 336 [2019-12-07 18:05:56,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:05:56,822 INFO L462 AbstractCegarLoop]: Abstraction has 5027 states and 6880 transitions. [2019-12-07 18:05:56,822 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:05:56,823 INFO L276 IsEmpty]: Start isEmpty. Operand 5027 states and 6880 transitions. [2019-12-07 18:05:56,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2019-12-07 18:05:56,827 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:05:56,827 INFO L410 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:05:56,828 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:05:56,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:05:56,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1546862455, now seen corresponding path program 1 times [2019-12-07 18:05:56,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:05:56,828 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55414410] [2019-12-07 18:05:56,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:05:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:56,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1563 backedges. 904 proven. 10 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2019-12-07 18:05:56,923 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55414410] [2019-12-07 18:05:56,923 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106025245] [2019-12-07 18:05:56,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49d64f0a-da43-40e2-b485-dc25baadfdf1/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 [2019-12-07 18:05:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:57,010 INFO L264 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 18:05:57,025 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:05:57,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1563 backedges. 904 proven. 10 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2019-12-07 18:05:57,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:05:57,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-12-07 18:05:57,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266639542] [2019-12-07 18:05:57,114 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:05:57,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:05:57,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:05:57,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:05:57,114 INFO L87 Difference]: Start difference. First operand 5027 states and 6880 transitions. Second operand 4 states. [2019-12-07 18:05:57,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:05:57,450 INFO L93 Difference]: Finished difference Result 9987 states and 13646 transitions. [2019-12-07 18:05:57,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:05:57,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 360 [2019-12-07 18:05:57,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:05:57,465 INFO L225 Difference]: With dead ends: 9987 [2019-12-07 18:05:57,465 INFO L226 Difference]: Without dead ends: 7540 [2019-12-07 18:05:57,469 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:05:57,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7540 states. [2019-12-07 18:05:57,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7540 to 5561. [2019-12-07 18:05:57,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5561 states. [2019-12-07 18:05:57,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5561 states to 5561 states and 7516 transitions. [2019-12-07 18:05:57,624 INFO L78 Accepts]: Start accepts. Automaton has 5561 states and 7516 transitions. Word has length 360 [2019-12-07 18:05:57,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:05:57,624 INFO L462 AbstractCegarLoop]: Abstraction has 5561 states and 7516 transitions. [2019-12-07 18:05:57,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:05:57,625 INFO L276 IsEmpty]: Start isEmpty. Operand 5561 states and 7516 transitions. [2019-12-07 18:05:57,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2019-12-07 18:05:57,630 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:05:57,631 INFO L410 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 15, 15, 15, 15, 15, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:05:57,831 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:05:57,831 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:05:57,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:05:57,832 INFO L82 PathProgramCache]: Analyzing trace with hash 774755817, now seen corresponding path program 2 times [2019-12-07 18:05:57,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:05:57,832 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703250694] [2019-12-07 18:05:57,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:05:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:57,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1649 backedges. 955 proven. 5 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2019-12-07 18:05:57,933 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703250694] [2019-12-07 18:05:57,933 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496495987] [2019-12-07 18:05:57,933 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49d64f0a-da43-40e2-b485-dc25baadfdf1/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 [2019-12-07 18:05:58,026 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 18:05:58,026 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:05:58,028 INFO L264 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 18:05:58,036 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:05:58,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1649 backedges. 955 proven. 5 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2019-12-07 18:05:58,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:05:58,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-12-07 18:05:58,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428431882] [2019-12-07 18:05:58,113 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:05:58,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:05:58,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:05:58,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:05:58,113 INFO L87 Difference]: Start difference. First operand 5561 states and 7516 transitions. Second operand 4 states. [2019-12-07 18:05:58,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:05:58,370 INFO L93 Difference]: Finished difference Result 12544 states and 16972 transitions. [2019-12-07 18:05:58,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:05:58,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 373 [2019-12-07 18:05:58,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:05:58,378 INFO L225 Difference]: With dead ends: 12544 [2019-12-07 18:05:58,378 INFO L226 Difference]: Without dead ends: 6979 [2019-12-07 18:05:58,383 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:05:58,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6979 states. [2019-12-07 18:05:58,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6979 to 5709. [2019-12-07 18:05:58,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5709 states. [2019-12-07 18:05:58,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5709 states to 5709 states and 7634 transitions. [2019-12-07 18:05:58,469 INFO L78 Accepts]: Start accepts. Automaton has 5709 states and 7634 transitions. Word has length 373 [2019-12-07 18:05:58,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:05:58,469 INFO L462 AbstractCegarLoop]: Abstraction has 5709 states and 7634 transitions. [2019-12-07 18:05:58,469 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:05:58,469 INFO L276 IsEmpty]: Start isEmpty. Operand 5709 states and 7634 transitions. [2019-12-07 18:05:58,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2019-12-07 18:05:58,475 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:05:58,475 INFO L410 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 16, 16, 16, 14, 14, 12, 12, 10, 10, 8, 8, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:05:58,676 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:05:58,676 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:05:58,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:05:58,676 INFO L82 PathProgramCache]: Analyzing trace with hash 256545513, now seen corresponding path program 1 times [2019-12-07 18:05:58,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:05:58,677 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224067755] [2019-12-07 18:05:58,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:05:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:58,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 885 proven. 0 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2019-12-07 18:05:58,779 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224067755] [2019-12-07 18:05:58,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:05:58,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:05:58,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725434717] [2019-12-07 18:05:58,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:05:58,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:05:58,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:05:58,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:58,780 INFO L87 Difference]: Start difference. First operand 5709 states and 7634 transitions. Second operand 3 states. [2019-12-07 18:05:58,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:05:58,895 INFO L93 Difference]: Finished difference Result 11015 states and 14510 transitions. [2019-12-07 18:05:58,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:05:58,895 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 412 [2019-12-07 18:05:58,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:05:58,900 INFO L225 Difference]: With dead ends: 11015 [2019-12-07 18:05:58,900 INFO L226 Difference]: Without dead ends: 3069 [2019-12-07 18:05:58,906 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:05:58,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2019-12-07 18:05:58,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 2976. [2019-12-07 18:05:58,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2976 states. [2019-12-07 18:05:58,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 3983 transitions. [2019-12-07 18:05:58,942 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 3983 transitions. Word has length 412 [2019-12-07 18:05:58,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:05:58,942 INFO L462 AbstractCegarLoop]: Abstraction has 2976 states and 3983 transitions. [2019-12-07 18:05:58,942 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:05:58,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 3983 transitions. [2019-12-07 18:05:58,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2019-12-07 18:05:58,946 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:05:58,946 INFO L410 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 19, 17, 17, 15, 15, 13, 13, 11, 11, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:05:58,946 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:05:58,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:05:58,947 INFO L82 PathProgramCache]: Analyzing trace with hash 930203824, now seen corresponding path program 1 times [2019-12-07 18:05:58,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:05:58,947 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405639917] [2019-12-07 18:05:58,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:05:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:59,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2898 backedges. 1648 proven. 14 refuted. 0 times theorem prover too weak. 1236 trivial. 0 not checked. [2019-12-07 18:05:59,124 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405639917] [2019-12-07 18:05:59,124 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952964339] [2019-12-07 18:05:59,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49d64f0a-da43-40e2-b485-dc25baadfdf1/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 [2019-12-07 18:05:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:59,230 INFO L264 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 18:05:59,234 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:05:59,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2898 backedges. 1075 proven. 0 refuted. 0 times theorem prover too weak. 1823 trivial. 0 not checked. [2019-12-07 18:05:59,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 18:05:59,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2019-12-07 18:05:59,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894560759] [2019-12-07 18:05:59,452 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:05:59,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:05:59,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:05:59,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:05:59,452 INFO L87 Difference]: Start difference. First operand 2976 states and 3983 transitions. Second operand 3 states. [2019-12-07 18:05:59,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:05:59,473 INFO L93 Difference]: Finished difference Result 3028 states and 4049 transitions. [2019-12-07 18:05:59,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:05:59,473 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 510 [2019-12-07 18:05:59,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:05:59,476 INFO L225 Difference]: With dead ends: 3028 [2019-12-07 18:05:59,476 INFO L226 Difference]: Without dead ends: 2531 [2019-12-07 18:05:59,477 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:05:59,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2019-12-07 18:05:59,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 2481. [2019-12-07 18:05:59,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2481 states. [2019-12-07 18:05:59,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2481 states to 2481 states and 3319 transitions. [2019-12-07 18:05:59,501 INFO L78 Accepts]: Start accepts. Automaton has 2481 states and 3319 transitions. Word has length 510 [2019-12-07 18:05:59,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:05:59,502 INFO L462 AbstractCegarLoop]: Abstraction has 2481 states and 3319 transitions. [2019-12-07 18:05:59,502 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:05:59,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2481 states and 3319 transitions. [2019-12-07 18:05:59,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2019-12-07 18:05:59,505 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:05:59,505 INFO L410 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 18, 16, 16, 14, 14, 13, 13, 12, 12, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:05:59,706 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:05:59,706 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:05:59,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:05:59,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1673743471, now seen corresponding path program 1 times [2019-12-07 18:05:59,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:05:59,707 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677859817] [2019-12-07 18:05:59,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:05:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:59,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2784 backedges. 1623 proven. 14 refuted. 0 times theorem prover too weak. 1147 trivial. 0 not checked. [2019-12-07 18:05:59,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677859817] [2019-12-07 18:05:59,889 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266067572] [2019-12-07 18:05:59,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49d64f0a-da43-40e2-b485-dc25baadfdf1/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 [2019-12-07 18:05:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:05:59,983 INFO L264 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:05:59,988 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:06:00,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2784 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 2506 trivial. 0 not checked. [2019-12-07 18:06:00,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 18:06:00,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2019-12-07 18:06:00,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353068045] [2019-12-07 18:06:00,105 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:06:00,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:06:00,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:06:00,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:06:00,105 INFO L87 Difference]: Start difference. First operand 2481 states and 3319 transitions. Second operand 3 states. [2019-12-07 18:06:00,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:06:00,207 INFO L93 Difference]: Finished difference Result 5060 states and 6783 transitions. [2019-12-07 18:06:00,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:06:00,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 511 [2019-12-07 18:06:00,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:06:00,210 INFO L225 Difference]: With dead ends: 5060 [2019-12-07 18:06:00,210 INFO L226 Difference]: Without dead ends: 2589 [2019-12-07 18:06:00,212 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:06:00,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2589 states. [2019-12-07 18:06:00,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2589 to 2586. [2019-12-07 18:06:00,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2586 states. [2019-12-07 18:06:00,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 3331 transitions. [2019-12-07 18:06:00,238 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 3331 transitions. Word has length 511 [2019-12-07 18:06:00,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:06:00,239 INFO L462 AbstractCegarLoop]: Abstraction has 2586 states and 3331 transitions. [2019-12-07 18:06:00,239 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:06:00,239 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 3331 transitions. [2019-12-07 18:06:00,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2019-12-07 18:06:00,243 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:06:00,244 INFO L410 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 21, 19, 19, 17, 17, 16, 16, 15, 15, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:06:00,444 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:06:00,445 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:06:00,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:06:00,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1058434925, now seen corresponding path program 2 times [2019-12-07 18:06:00,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:06:00,445 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665195516] [2019-12-07 18:06:00,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:06:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:06:00,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4135 backedges. 2131 proven. 14 refuted. 0 times theorem prover too weak. 1990 trivial. 0 not checked. [2019-12-07 18:06:00,779 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665195516] [2019-12-07 18:06:00,779 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956444233] [2019-12-07 18:06:00,779 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49d64f0a-da43-40e2-b485-dc25baadfdf1/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 [2019-12-07 18:06:00,878 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 18:06:00,879 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:06:00,880 INFO L264 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 18:06:00,884 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:06:01,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4135 backedges. 2131 proven. 14 refuted. 0 times theorem prover too weak. 1990 trivial. 0 not checked. [2019-12-07 18:06:01,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:06:01,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-12-07 18:06:01,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787537538] [2019-12-07 18:06:01,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:06:01,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:06:01,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:06:01,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:06:01,044 INFO L87 Difference]: Start difference. First operand 2586 states and 3331 transitions. Second operand 4 states. [2019-12-07 18:06:01,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:06:01,140 INFO L93 Difference]: Finished difference Result 2848 states and 3664 transitions. [2019-12-07 18:06:01,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:06:01,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 622 [2019-12-07 18:06:01,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:06:01,141 INFO L225 Difference]: With dead ends: 2848 [2019-12-07 18:06:01,141 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 18:06:01,143 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 624 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:06:01,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 18:06:01,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 18:06:01,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 18:06:01,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 18:06:01,144 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 622 [2019-12-07 18:06:01,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:06:01,144 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:06:01,144 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:06:01,144 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:06:01,145 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 18:06:01,345 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:06:01,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 18:06:01,646 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 111 [2019-12-07 18:06:02,337 WARN L192 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 50 [2019-12-07 18:06:02,396 INFO L242 CegarLoopResult]: At program point L168(lines 164 498) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4512) (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0) (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0)) [2019-12-07 18:06:02,396 INFO L242 CegarLoopResult]: At program point L102(lines 101 519) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 2) (= 12292 ULTIMATE.start_ssl3_connect_~s__state~0)) [2019-12-07 18:06:02,396 INFO L246 CegarLoopResult]: For program point L466(lines 466 468) no Hoare annotation was computed. [2019-12-07 18:06:02,396 INFO L246 CegarLoopResult]: For program point L466-2(lines 466 468) no Hoare annotation was computed. [2019-12-07 18:06:02,396 INFO L246 CegarLoopResult]: For program point L434(lines 434 438) no Hoare annotation was computed. [2019-12-07 18:06:02,396 INFO L246 CegarLoopResult]: For program point L434-2(lines 434 438) no Hoare annotation was computed. [2019-12-07 18:06:02,397 INFO L246 CegarLoopResult]: For program point L335(lines 335 339) no Hoare annotation was computed. [2019-12-07 18:06:02,397 INFO L246 CegarLoopResult]: For program point L269(lines 269 271) no Hoare annotation was computed. [2019-12-07 18:06:02,397 INFO L246 CegarLoopResult]: For program point L335-2(lines 335 339) no Hoare annotation was computed. [2019-12-07 18:06:02,397 INFO L246 CegarLoopResult]: For program point L269-2(lines 201 484) no Hoare annotation was computed. [2019-12-07 18:06:02,397 INFO L246 CegarLoopResult]: For program point L170(lines 170 496) no Hoare annotation was computed. [2019-12-07 18:06:02,397 INFO L246 CegarLoopResult]: For program point L137(lines 137 507) no Hoare annotation was computed. [2019-12-07 18:06:02,397 INFO L246 CegarLoopResult]: For program point L104(lines 104 518) no Hoare annotation was computed. [2019-12-07 18:06:02,397 INFO L242 CegarLoopResult]: At program point L138(lines 134 508) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4432) (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0) (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0)) [2019-12-07 18:06:02,397 INFO L246 CegarLoopResult]: For program point L304(lines 304 306) no Hoare annotation was computed. [2019-12-07 18:06:02,397 INFO L246 CegarLoopResult]: For program point L238(lines 238 241) no Hoare annotation was computed. [2019-12-07 18:06:02,397 INFO L246 CegarLoopResult]: For program point L304-2(lines 201 484) no Hoare annotation was computed. [2019-12-07 18:06:02,397 INFO L246 CegarLoopResult]: For program point L404(lines 404 406) no Hoare annotation was computed. [2019-12-07 18:06:02,397 INFO L246 CegarLoopResult]: For program point L371(lines 371 373) no Hoare annotation was computed. [2019-12-07 18:06:02,397 INFO L242 CegarLoopResult]: At program point L206(lines 104 518) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4560) (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 2)) [2019-12-07 18:06:02,397 INFO L246 CegarLoopResult]: For program point L173(lines 173 495) no Hoare annotation was computed. [2019-12-07 18:06:02,397 INFO L246 CegarLoopResult]: For program point L140(lines 140 506) no Hoare annotation was computed. [2019-12-07 18:06:02,397 INFO L246 CegarLoopResult]: For program point L107(lines 107 517) no Hoare annotation was computed. [2019-12-07 18:06:02,398 INFO L242 CegarLoopResult]: At program point L174(lines 170 496) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4512) (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0) (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0)) [2019-12-07 18:06:02,398 INFO L246 CegarLoopResult]: For program point L472(lines 472 474) no Hoare annotation was computed. [2019-12-07 18:06:02,398 INFO L246 CegarLoopResult]: For program point L472-2(lines 472 474) no Hoare annotation was computed. [2019-12-07 18:06:02,398 INFO L249 CegarLoopResult]: At program point L539(lines 97 540) the Hoare annotation is: true [2019-12-07 18:06:02,398 INFO L246 CegarLoopResult]: For program point L275(lines 275 279) no Hoare annotation was computed. [2019-12-07 18:06:02,398 INFO L246 CegarLoopResult]: For program point L275-2(lines 275 279) no Hoare annotation was computed. [2019-12-07 18:06:02,398 INFO L246 CegarLoopResult]: For program point L176(lines 176 494) no Hoare annotation was computed. [2019-12-07 18:06:02,398 INFO L246 CegarLoopResult]: For program point L143(lines 143 505) no Hoare annotation was computed. [2019-12-07 18:06:02,398 INFO L246 CegarLoopResult]: For program point L110(lines 110 516) no Hoare annotation was computed. [2019-12-07 18:06:02,398 INFO L242 CegarLoopResult]: At program point L144(lines 140 506) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4448) (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0) (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0)) [2019-12-07 18:06:02,398 INFO L246 CegarLoopResult]: For program point L211(lines 211 213) no Hoare annotation was computed. [2019-12-07 18:06:02,398 INFO L246 CegarLoopResult]: For program point L211-2(lines 211 213) no Hoare annotation was computed. [2019-12-07 18:06:02,398 INFO L246 CegarLoopResult]: For program point L179(lines 179 493) no Hoare annotation was computed. [2019-12-07 18:06:02,398 INFO L246 CegarLoopResult]: For program point L146(lines 146 504) no Hoare annotation was computed. [2019-12-07 18:06:02,398 INFO L246 CegarLoopResult]: For program point L113(lines 113 515) no Hoare annotation was computed. [2019-12-07 18:06:02,398 INFO L246 CegarLoopResult]: For program point L477(lines 477 479) no Hoare annotation was computed. [2019-12-07 18:06:02,398 INFO L246 CegarLoopResult]: For program point L444(lines 444 455) no Hoare annotation was computed. [2019-12-07 18:06:02,398 INFO L246 CegarLoopResult]: For program point L411(lines 411 425) no Hoare annotation was computed. [2019-12-07 18:06:02,399 INFO L246 CegarLoopResult]: For program point L411-1(lines 411 425) no Hoare annotation was computed. [2019-12-07 18:06:02,399 INFO L246 CegarLoopResult]: For program point L444-2(lines 444 455) no Hoare annotation was computed. [2019-12-07 18:06:02,399 INFO L246 CegarLoopResult]: For program point L312(lines 312 315) no Hoare annotation was computed. [2019-12-07 18:06:02,399 INFO L242 CegarLoopResult]: At program point L180(lines 176 494) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528))) (or (and .cse0 (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0) (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0)) (and (<= 4512 ULTIMATE.start_ssl3_connect_~s__state~0) .cse0 (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 2)))) [2019-12-07 18:06:02,399 INFO L246 CegarLoopResult]: For program point L544(lines 544 546) no Hoare annotation was computed. [2019-12-07 18:06:02,399 INFO L246 CegarLoopResult]: For program point L544-2(lines 544 546) no Hoare annotation was computed. [2019-12-07 18:06:02,399 INFO L246 CegarLoopResult]: For program point L347(lines 347 349) no Hoare annotation was computed. [2019-12-07 18:06:02,399 INFO L246 CegarLoopResult]: For program point L182(lines 182 492) no Hoare annotation was computed. [2019-12-07 18:06:02,399 INFO L246 CegarLoopResult]: For program point L149(lines 149 503) no Hoare annotation was computed. [2019-12-07 18:06:02,399 INFO L246 CegarLoopResult]: For program point L116(lines 116 514) no Hoare annotation was computed. [2019-12-07 18:06:02,399 INFO L246 CegarLoopResult]: For program point L381(lines 381 383) no Hoare annotation was computed. [2019-12-07 18:06:02,399 INFO L246 CegarLoopResult]: For program point L216(lines 216 219) no Hoare annotation was computed. [2019-12-07 18:06:02,399 INFO L242 CegarLoopResult]: At program point L150(lines 146 504) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4464) (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0) (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0)) [2019-12-07 18:06:02,399 INFO L246 CegarLoopResult]: For program point L84(lines 84 90) no Hoare annotation was computed. [2019-12-07 18:06:02,399 INFO L246 CegarLoopResult]: For program point L415(lines 415 421) no Hoare annotation was computed. [2019-12-07 18:06:02,399 INFO L246 CegarLoopResult]: For program point L250(lines 250 256) no Hoare annotation was computed. [2019-12-07 18:06:02,399 INFO L246 CegarLoopResult]: For program point L449(lines 449 452) no Hoare annotation was computed. [2019-12-07 18:06:02,400 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 18:06:02,400 INFO L246 CegarLoopResult]: For program point L185(lines 185 491) no Hoare annotation was computed. [2019-12-07 18:06:02,400 INFO L246 CegarLoopResult]: For program point L152(lines 152 502) no Hoare annotation was computed. [2019-12-07 18:06:02,400 INFO L246 CegarLoopResult]: For program point L119(lines 119 513) no Hoare annotation was computed. [2019-12-07 18:06:02,400 INFO L249 CegarLoopResult]: At program point L549(lines 10 551) the Hoare annotation is: true [2019-12-07 18:06:02,400 INFO L242 CegarLoopResult]: At program point L186(lines 182 492) the Hoare annotation is: (let ((.cse1 (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0)) (.cse2 (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse0 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4560))) (or (and .cse0 .cse1 (<= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 4560) .cse2) (and .cse0 (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) .cse1 .cse2) (and (<= 4512 ULTIMATE.start_ssl3_connect_~s__state~0) .cse0 (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 2)))) [2019-12-07 18:06:02,400 INFO L242 CegarLoopResult]: At program point L120(lines 116 514) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 2) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4432) (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) [2019-12-07 18:06:02,400 INFO L246 CegarLoopResult]: For program point L87(lines 87 89) no Hoare annotation was computed. [2019-12-07 18:06:02,400 INFO L246 CegarLoopResult]: For program point L87-2(lines 84 90) no Hoare annotation was computed. [2019-12-07 18:06:02,400 INFO L246 CegarLoopResult]: For program point L286(lines 286 296) no Hoare annotation was computed. [2019-12-07 18:06:02,400 INFO L246 CegarLoopResult]: For program point L253(lines 253 255) no Hoare annotation was computed. [2019-12-07 18:06:02,400 INFO L246 CegarLoopResult]: For program point L286-2(lines 286 296) no Hoare annotation was computed. [2019-12-07 18:06:02,400 INFO L246 CegarLoopResult]: For program point L253-2(lines 201 484) no Hoare annotation was computed. [2019-12-07 18:06:02,400 INFO L242 CegarLoopResult]: At program point L485(lines 98 538) the Hoare annotation is: (let ((.cse8 (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0))) (let ((.cse4 (<= ULTIMATE.start_ssl3_connect_~s__state~0 3)) (.cse2 (<= 4560 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse3 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4560)) (.cse12 (<= 4560 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0)) (.cse5 (<= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 4560)) (.cse7 (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) (.cse1 (not .cse8)) (.cse10 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4352)) (.cse11 (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse9 (= 4400 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse6 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528)) (.cse0 (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 2))) (or (and .cse0 (= 4368 ULTIMATE.start_ssl3_connect_~s__state~0)) (and .cse1 .cse2 .cse3 .cse0) (and .cse4 .cse5) (and .cse6 .cse7 .cse8 (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0)) (and .cse7 .cse8 .cse5 .cse9) (and .cse0 .cse4 .cse8) (and .cse10 .cse11 .cse12 .cse8 .cse5) (and .cse2 .cse3 .cse12 .cse8 .cse5) (and (= 4416 ULTIMATE.start_ssl3_connect_~s__state~0) .cse7 .cse8) (and .cse1 .cse10 .cse0 (<= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 3) .cse11) (and .cse0 (= 4384 ULTIMATE.start_ssl3_connect_~s__state~0)) (and .cse0 .cse8 .cse9) (and (<= 4512 ULTIMATE.start_ssl3_connect_~s__state~0) .cse6 .cse0)))) [2019-12-07 18:06:02,400 INFO L246 CegarLoopResult]: For program point L320(lines 320 322) no Hoare annotation was computed. [2019-12-07 18:06:02,401 INFO L246 CegarLoopResult]: For program point L188(lines 188 490) no Hoare annotation was computed. [2019-12-07 18:06:02,401 INFO L246 CegarLoopResult]: For program point L155(lines 155 501) no Hoare annotation was computed. [2019-12-07 18:06:02,401 INFO L246 CegarLoopResult]: For program point L122(lines 122 512) no Hoare annotation was computed. [2019-12-07 18:06:02,401 INFO L246 CegarLoopResult]: For program point L387(lines 387 391) no Hoare annotation was computed. [2019-12-07 18:06:02,401 INFO L242 CegarLoopResult]: At program point L321(lines 75 550) the Hoare annotation is: false [2019-12-07 18:06:02,401 INFO L246 CegarLoopResult]: For program point L387-2(lines 201 484) no Hoare annotation was computed. [2019-12-07 18:06:02,401 INFO L246 CegarLoopResult]: For program point L222(lines 222 233) no Hoare annotation was computed. [2019-12-07 18:06:02,401 INFO L246 CegarLoopResult]: For program point L222-2(lines 201 484) no Hoare annotation was computed. [2019-12-07 18:06:02,401 INFO L246 CegarLoopResult]: For program point L520(lines 520 536) no Hoare annotation was computed. [2019-12-07 18:06:02,401 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 18:06:02,401 INFO L246 CegarLoopResult]: For program point L521(lines 521 535) no Hoare annotation was computed. [2019-12-07 18:06:02,401 INFO L246 CegarLoopResult]: For program point L356(lines 356 358) no Hoare annotation was computed. [2019-12-07 18:06:02,401 INFO L246 CegarLoopResult]: For program point L323(lines 323 325) no Hoare annotation was computed. [2019-12-07 18:06:02,401 INFO L246 CegarLoopResult]: For program point L290(lines 290 292) no Hoare annotation was computed. [2019-12-07 18:06:02,401 INFO L246 CegarLoopResult]: For program point L224(lines 224 227) no Hoare annotation was computed. [2019-12-07 18:06:02,401 INFO L246 CegarLoopResult]: For program point L290-2(lines 288 296) no Hoare annotation was computed. [2019-12-07 18:06:02,401 INFO L246 CegarLoopResult]: For program point L191(lines 191 489) no Hoare annotation was computed. [2019-12-07 18:06:02,401 INFO L246 CegarLoopResult]: For program point L158(lines 158 500) no Hoare annotation was computed. [2019-12-07 18:06:02,401 INFO L246 CegarLoopResult]: For program point L125(lines 125 511) no Hoare annotation was computed. [2019-12-07 18:06:02,402 INFO L246 CegarLoopResult]: For program point L92(lines 92 96) no Hoare annotation was computed. [2019-12-07 18:06:02,402 INFO L246 CegarLoopResult]: For program point L522(lines 522 527) no Hoare annotation was computed. [2019-12-07 18:06:02,402 INFO L246 CegarLoopResult]: For program point L522-2(lines 521 535) no Hoare annotation was computed. [2019-12-07 18:06:02,402 INFO L242 CegarLoopResult]: At program point L192(lines 188 490) the Hoare annotation is: (let ((.cse1 (<= 4560 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse2 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4560)) (.cse0 (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0))) (or (and (not .cse0) .cse1 .cse2 (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 2)) (and .cse1 .cse2 (<= 4560 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0) .cse0 (<= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 4560)))) [2019-12-07 18:06:02,402 INFO L242 CegarLoopResult]: At program point L126(lines 122 512) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 2) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4432) (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) [2019-12-07 18:06:02,402 INFO L246 CegarLoopResult]: For program point L93(lines 93 95) no Hoare annotation was computed. [2019-12-07 18:06:02,402 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 18:06:02,402 INFO L246 CegarLoopResult]: For program point L524(lines 524 526) no Hoare annotation was computed. [2019-12-07 18:06:02,402 INFO L246 CegarLoopResult]: For program point L194(lines 194 488) no Hoare annotation was computed. [2019-12-07 18:06:02,402 INFO L246 CegarLoopResult]: For program point L161(lines 161 499) no Hoare annotation was computed. [2019-12-07 18:06:02,402 INFO L246 CegarLoopResult]: For program point L128(lines 128 510) no Hoare annotation was computed. [2019-12-07 18:06:02,402 INFO L246 CegarLoopResult]: For program point L360(lines 360 365) no Hoare annotation was computed. [2019-12-07 18:06:02,402 INFO L246 CegarLoopResult]: For program point L360-2(lines 360 365) no Hoare annotation was computed. [2019-12-07 18:06:02,402 INFO L246 CegarLoopResult]: For program point L228(lines 228 231) no Hoare annotation was computed. [2019-12-07 18:06:02,402 INFO L242 CegarLoopResult]: At program point L195(lines 194 488) the Hoare annotation is: (let ((.cse1 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4352)) (.cse2 (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse0 (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0))) (or (and (not .cse0) .cse1 (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 2) (<= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 3) .cse2) (and .cse1 .cse2 (<= 4560 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0) .cse0 (<= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 4560)))) [2019-12-07 18:06:02,402 INFO L242 CegarLoopResult]: At program point L162(lines 152 502) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4480) (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0) (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0)) [2019-12-07 18:06:02,402 INFO L246 CegarLoopResult]: For program point L460-1(lines 460 462) no Hoare annotation was computed. [2019-12-07 18:06:02,403 INFO L246 CegarLoopResult]: For program point L262(lines 262 264) no Hoare annotation was computed. [2019-12-07 18:06:02,403 INFO L249 CegarLoopResult]: At program point L560(lines 552 562) the Hoare annotation is: true [2019-12-07 18:06:02,403 INFO L246 CegarLoopResult]: For program point L197(lines 197 487) no Hoare annotation was computed. [2019-12-07 18:06:02,403 INFO L246 CegarLoopResult]: For program point L164(lines 164 498) no Hoare annotation was computed. [2019-12-07 18:06:02,403 INFO L246 CegarLoopResult]: For program point L131(lines 131 509) no Hoare annotation was computed. [2019-12-07 18:06:02,403 INFO L246 CegarLoopResult]: For program point L98-1(lines 75 550) no Hoare annotation was computed. [2019-12-07 18:06:02,403 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 548) no Hoare annotation was computed. [2019-12-07 18:06:02,403 INFO L246 CegarLoopResult]: For program point L396(lines 396 399) no Hoare annotation was computed. [2019-12-07 18:06:02,403 INFO L249 CegarLoopResult]: At program point L198(lines 197 487) the Hoare annotation is: true [2019-12-07 18:06:02,403 INFO L242 CegarLoopResult]: At program point L132(lines 128 510) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4432)) (.cse1 (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse2 (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0))) (or (and (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) .cse0 .cse1 .cse2 (<= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 4560)) (and (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 2) .cse0 .cse1 .cse2))) [2019-12-07 18:06:02,403 INFO L246 CegarLoopResult]: For program point L99(line 99) no Hoare annotation was computed. [2019-12-07 18:06:02,403 INFO L246 CegarLoopResult]: For program point L529(lines 529 533) no Hoare annotation was computed. [2019-12-07 18:06:02,403 INFO L246 CegarLoopResult]: For program point L431(lines 431 433) no Hoare annotation was computed. [2019-12-07 18:06:02,403 INFO L246 CegarLoopResult]: For program point L332(lines 332 334) no Hoare annotation was computed. [2019-12-07 18:06:02,403 INFO L249 CegarLoopResult]: At program point L200(lines 199 487) the Hoare annotation is: true [2019-12-07 18:06:02,403 INFO L246 CegarLoopResult]: For program point L167(lines 167 497) no Hoare annotation was computed. [2019-12-07 18:06:02,403 INFO L246 CegarLoopResult]: For program point L134(lines 134 508) no Hoare annotation was computed. [2019-12-07 18:06:02,404 INFO L246 CegarLoopResult]: For program point L101(lines 101 519) no Hoare annotation was computed. [2019-12-07 18:06:02,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:06:02 BoogieIcfgContainer [2019-12-07 18:06:02,419 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:06:02,419 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:06:02,419 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:06:02,419 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:06:02,420 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:05:53" (3/4) ... [2019-12-07 18:06:02,422 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 18:06:02,434 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-12-07 18:06:02,435 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 18:06:02,493 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_49d64f0a-da43-40e2-b485-dc25baadfdf1/bin/uautomizer/witness.graphml [2019-12-07 18:06:02,494 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:06:02,495 INFO L168 Benchmark]: Toolchain (without parser) took 10228.66 ms. Allocated memory was 1.0 GB in the beginning and 1.9 GB in the end (delta: 843.6 MB). Free memory was 944.8 MB in the beginning and 1.5 GB in the end (delta: -575.9 MB). Peak memory consumption was 267.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:06:02,495 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:06:02,495 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -146.4 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. [2019-12-07 18:06:02,495 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.20 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:06:02,495 INFO L168 Benchmark]: Boogie Preprocessor took 24.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 18:06:02,496 INFO L168 Benchmark]: RCFGBuilder took 395.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. [2019-12-07 18:06:02,496 INFO L168 Benchmark]: TraceAbstraction took 9413.41 ms. Allocated memory was 1.1 GB in the beginning and 1.9 GB in the end (delta: 740.3 MB). Free memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: -517.0 MB). Peak memory consumption was 796.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:06:02,496 INFO L168 Benchmark]: Witness Printer took 74.31 ms. Allocated memory is still 1.9 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 11.5 GB. [2019-12-07 18:06:02,497 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 281.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -146.4 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.20 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 395.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9413.41 ms. Allocated memory was 1.1 GB in the beginning and 1.9 GB in the end (delta: 740.3 MB). Free memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: -517.0 MB). Peak memory consumption was 796.3 MB. Max. memory is 11.5 GB. * Witness Printer took 74.31 ms. Allocated memory is still 1.9 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 548]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 182]: Loop Invariant Derived loop invariant: ((((s__state <= 4560 && 0 == s__hit) && s__s3__tmp__next_state___0 <= 4560) && 4432 <= s__state) || (((s__state <= 4560 && blastFlag <= 4) && 0 == s__hit) && 4432 <= s__state)) || ((4512 <= s__state && s__state <= 4560) && blastFlag <= 2) - InvariantResult [Line: 140]: Loop Invariant Derived loop invariant: ((blastFlag <= 4 && s__state <= 4448) && 0 == s__hit) && 4432 <= s__state - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: blastFlag <= 2 && 12292 == s__state - InvariantResult [Line: 197]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 75]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 164]: Loop Invariant Derived loop invariant: ((s__state <= 4512 && blastFlag <= 4) && 0 == s__hit) && 4432 <= s__state - InvariantResult [Line: 199]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 122]: Loop Invariant Derived loop invariant: (blastFlag <= 2 && s__state <= 4432) && 4352 <= s__state - InvariantResult [Line: 176]: Loop Invariant Derived loop invariant: (((s__state <= 4528 && blastFlag <= 4) && 0 == s__hit) && 4432 <= s__state) || ((4512 <= s__state && s__state <= 4528) && blastFlag <= 2) - InvariantResult [Line: 134]: Loop Invariant Derived loop invariant: ((blastFlag <= 4 && s__state <= 4432) && 4352 <= s__state) && 0 == s__hit - InvariantResult [Line: 188]: Loop Invariant Derived loop invariant: (((!(0 == s__hit) && 4560 <= s__state) && s__state <= 4560) && blastFlag <= 2) || ((((4560 <= s__state && s__state <= 4560) && 4560 <= s__s3__tmp__next_state___0) && 0 == s__hit) && s__s3__tmp__next_state___0 <= 4560) - InvariantResult [Line: 146]: Loop Invariant Derived loop invariant: ((s__state <= 4464 && blastFlag <= 4) && 0 == s__hit) && 4432 <= s__state - InvariantResult [Line: 152]: Loop Invariant Derived loop invariant: ((s__state <= 4480 && blastFlag <= 4) && 0 == s__hit) && 4432 <= s__state - InvariantResult [Line: 97]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 116]: Loop Invariant Derived loop invariant: (blastFlag <= 2 && s__state <= 4432) && 4352 <= s__state - InvariantResult [Line: 552]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 194]: Loop Invariant Derived loop invariant: ((((!(0 == s__hit) && s__state <= 4352) && blastFlag <= 2) && s__s3__tmp__next_state___0 <= 3) && 4352 <= s__state) || ((((s__state <= 4352 && 4352 <= s__state) && 4560 <= s__s3__tmp__next_state___0) && 0 == s__hit) && s__s3__tmp__next_state___0 <= 4560) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 104]: Loop Invariant Derived loop invariant: s__state <= 4560 && blastFlag <= 2 - InvariantResult [Line: 98]: Loop Invariant Derived loop invariant: ((((((((((((blastFlag <= 2 && 4368 == s__state) || (((!(0 == s__hit) && 4560 <= s__state) && s__state <= 4560) && blastFlag <= 2)) || (s__state <= 3 && s__s3__tmp__next_state___0 <= 4560)) || (((s__state <= 4528 && blastFlag <= 4) && 0 == s__hit) && 4432 <= s__state)) || (((blastFlag <= 4 && 0 == s__hit) && s__s3__tmp__next_state___0 <= 4560) && 4400 == s__state)) || ((blastFlag <= 2 && s__state <= 3) && 0 == s__hit)) || ((((s__state <= 4352 && 4352 <= s__state) && 4560 <= s__s3__tmp__next_state___0) && 0 == s__hit) && s__s3__tmp__next_state___0 <= 4560)) || ((((4560 <= s__state && s__state <= 4560) && 4560 <= s__s3__tmp__next_state___0) && 0 == s__hit) && s__s3__tmp__next_state___0 <= 4560)) || ((4416 == s__state && blastFlag <= 4) && 0 == s__hit)) || ((((!(0 == s__hit) && s__state <= 4352) && blastFlag <= 2) && s__s3__tmp__next_state___0 <= 3) && 4352 <= s__state)) || (blastFlag <= 2 && 4384 == s__state)) || ((blastFlag <= 2 && 0 == s__hit) && 4400 == s__state)) || ((4512 <= s__state && s__state <= 4528) && blastFlag <= 2) - InvariantResult [Line: 170]: Loop Invariant Derived loop invariant: ((s__state <= 4512 && blastFlag <= 4) && 0 == s__hit) && 4432 <= s__state - InvariantResult [Line: 128]: Loop Invariant Derived loop invariant: ((((blastFlag <= 4 && s__state <= 4432) && 4352 <= s__state) && 0 == s__hit) && s__s3__tmp__next_state___0 <= 4560) || (((blastFlag <= 2 && s__state <= 4432) && 4352 <= s__state) && 0 == s__hit) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 127 locations, 1 error locations. Result: SAFE, OverallTime: 8.3s, OverallIterations: 25, TraceHistogramMax: 22, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, HoareTripleCheckerStatistics: 4490 SDtfs, 2115 SDslu, 2318 SDs, 0 SdLazy, 2460 SolverSat, 611 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2456 GetRequests, 2421 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5709occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 25 MinimizatonAttempts, 4032 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 22 PreInvPairs, 155 NumberOfFragments, 425 HoareAnnotationTreeSize, 22 FomulaSimplifications, 31460 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 22 FomulaSimplificationsInter, 24851 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 8555 NumberOfCodeBlocks, 8555 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 8525 ConstructedInterpolants, 0 QuantifiedInterpolants, 4552471 SizeOfPredicates, 7 NumberOfNonLiveVariables, 3948 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 30 InterpolantComputations, 22 PerfectInterpolantSequences, 38935/39021 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...