./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c2386ece-f1dd-4be8-8b91-43cb829d3726/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c2386ece-f1dd-4be8-8b91-43cb829d3726/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c2386ece-f1dd-4be8-8b91-43cb829d3726/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c2386ece-f1dd-4be8-8b91-43cb829d3726/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_11.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c2386ece-f1dd-4be8-8b91-43cb829d3726/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c2386ece-f1dd-4be8-8b91-43cb829d3726/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash defe4a000b54820195525cab63f7790d3323d50a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:52:30,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:52:30,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:52:30,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:52:30,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:52:30,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:52:30,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:52:30,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:52:30,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:52:30,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:52:30,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:52:30,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:52:30,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:52:30,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:52:30,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:52:30,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:52:30,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:52:30,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:52:30,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:52:30,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:52:30,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:52:30,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:52:30,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:52:30,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:52:30,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:52:30,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:52:30,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:52:30,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:52:30,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:52:30,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:52:30,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:52:30,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:52:30,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:52:30,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:52:30,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:52:30,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:52:30,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:52:30,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:52:30,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:52:30,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:52:30,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:52:30,940 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c2386ece-f1dd-4be8-8b91-43cb829d3726/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:52:30,993 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:52:30,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:52:30,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:52:30,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:52:30,998 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:52:30,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:52:30,998 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:52:30,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:52:30,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:52:30,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:52:31,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:52:31,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:52:31,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:52:31,002 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:52:31,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:52:31,003 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:52:31,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:52:31,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:52:31,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:52:31,005 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:52:31,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:52:31,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:52:31,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:52:31,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:52:31,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:52:31,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:52:31,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:52:31,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:52:31,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:52:31,008 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_c2386ece-f1dd-4be8-8b91-43cb829d3726/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c2386ece-f1dd-4be8-8b91-43cb829d3726/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> defe4a000b54820195525cab63f7790d3323d50a [2020-11-30 00:52:31,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:52:31,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:52:31,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:52:31,397 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:52:31,403 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:52:31,405 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c2386ece-f1dd-4be8-8b91-43cb829d3726/bin/uautomizer/../../sv-benchmarks/c/openssl-simplified/s3_srvr_11.cil.c [2020-11-30 00:52:31,494 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c2386ece-f1dd-4be8-8b91-43cb829d3726/bin/uautomizer/data/2e9fb2fca/22095c92bd47404ebc93d574041d21fa/FLAG2e172df9c [2020-11-30 00:52:32,214 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:52:32,214 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c2386ece-f1dd-4be8-8b91-43cb829d3726/sv-benchmarks/c/openssl-simplified/s3_srvr_11.cil.c [2020-11-30 00:52:32,229 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c2386ece-f1dd-4be8-8b91-43cb829d3726/bin/uautomizer/data/2e9fb2fca/22095c92bd47404ebc93d574041d21fa/FLAG2e172df9c [2020-11-30 00:52:32,543 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c2386ece-f1dd-4be8-8b91-43cb829d3726/bin/uautomizer/data/2e9fb2fca/22095c92bd47404ebc93d574041d21fa [2020-11-30 00:52:32,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:52:32,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:52:32,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:52:32,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:52:32,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:52:32,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:52:32" (1/1) ... [2020-11-30 00:52:32,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77952e83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:32, skipping insertion in model container [2020-11-30 00:52:32,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:52:32" (1/1) ... [2020-11-30 00:52:32,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:52:32,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:52:32,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:52:32,966 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:52:33,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:52:33,049 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:52:33,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:33 WrapperNode [2020-11-30 00:52:33,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:52:33,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:52:33,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:52:33,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:52:33,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:33" (1/1) ... [2020-11-30 00:52:33,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:33" (1/1) ... [2020-11-30 00:52:33,124 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:52:33,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:52:33,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:52:33,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:52:33,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:33" (1/1) ... [2020-11-30 00:52:33,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:33" (1/1) ... [2020-11-30 00:52:33,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:33" (1/1) ... [2020-11-30 00:52:33,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:33" (1/1) ... [2020-11-30 00:52:33,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:33" (1/1) ... [2020-11-30 00:52:33,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:33" (1/1) ... [2020-11-30 00:52:33,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:33" (1/1) ... [2020-11-30 00:52:33,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:52:33,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:52:33,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:52:33,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:52:33,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2386ece-f1dd-4be8-8b91-43cb829d3726/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:52:33,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:52:33,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:52:33,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:52:33,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:52:33,576 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-30 00:52:34,577 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-11-30 00:52:34,577 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-11-30 00:52:34,588 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:52:34,588 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 00:52:34,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:52:34 BoogieIcfgContainer [2020-11-30 00:52:34,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:52:34,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:52:34,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:52:34,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:52:34,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:52:32" (1/3) ... [2020-11-30 00:52:34,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1200982e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:52:34, skipping insertion in model container [2020-11-30 00:52:34,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:33" (2/3) ... [2020-11-30 00:52:34,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1200982e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:52:34, skipping insertion in model container [2020-11-30 00:52:34,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:52:34" (3/3) ... [2020-11-30 00:52:34,600 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_11.cil.c [2020-11-30 00:52:34,612 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:52:34,617 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:52:34,631 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:52:34,658 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:52:34,658 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:52:34,658 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:52:34,658 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:52:34,659 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:52:34,659 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:52:34,659 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:52:34,659 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:52:34,680 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states. [2020-11-30 00:52:34,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 00:52:34,691 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:34,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:52:34,692 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:34,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:34,700 INFO L82 PathProgramCache]: Analyzing trace with hash -814657320, now seen corresponding path program 1 times [2020-11-30 00:52:34,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:34,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540508404] [2020-11-30 00:52:34,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:34,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:52:34,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540508404] [2020-11-30 00:52:34,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:34,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:34,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300726104] [2020-11-30 00:52:34,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:34,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:34,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:34,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:34,969 INFO L87 Difference]: Start difference. First operand 150 states. Second operand 3 states. [2020-11-30 00:52:35,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:35,353 INFO L93 Difference]: Finished difference Result 317 states and 543 transitions. [2020-11-30 00:52:35,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:35,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-11-30 00:52:35,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:35,397 INFO L225 Difference]: With dead ends: 317 [2020-11-30 00:52:35,399 INFO L226 Difference]: Without dead ends: 155 [2020-11-30 00:52:35,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:35,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-11-30 00:52:35,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2020-11-30 00:52:35,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-11-30 00:52:35,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 241 transitions. [2020-11-30 00:52:35,499 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 241 transitions. Word has length 26 [2020-11-30 00:52:35,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:35,500 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 241 transitions. [2020-11-30 00:52:35,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:35,500 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 241 transitions. [2020-11-30 00:52:35,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 00:52:35,503 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:35,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:52:35,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:52:35,504 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:35,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:35,505 INFO L82 PathProgramCache]: Analyzing trace with hash 327844106, now seen corresponding path program 1 times [2020-11-30 00:52:35,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:35,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047847490] [2020-11-30 00:52:35,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:35,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:52:35,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047847490] [2020-11-30 00:52:35,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:35,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:35,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190870106] [2020-11-30 00:52:35,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:35,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:35,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:35,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:35,608 INFO L87 Difference]: Start difference. First operand 153 states and 241 transitions. Second operand 3 states. [2020-11-30 00:52:35,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:35,917 INFO L93 Difference]: Finished difference Result 319 states and 502 transitions. [2020-11-30 00:52:35,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:35,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-30 00:52:35,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:35,922 INFO L225 Difference]: With dead ends: 319 [2020-11-30 00:52:35,922 INFO L226 Difference]: Without dead ends: 174 [2020-11-30 00:52:35,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:35,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-11-30 00:52:35,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-11-30 00:52:35,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-11-30 00:52:35,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 270 transitions. [2020-11-30 00:52:35,971 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 270 transitions. Word has length 27 [2020-11-30 00:52:35,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:35,972 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 270 transitions. [2020-11-30 00:52:35,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:35,972 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 270 transitions. [2020-11-30 00:52:35,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 00:52:35,976 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:35,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:52:35,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:52:35,977 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:35,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:35,980 INFO L82 PathProgramCache]: Analyzing trace with hash 883966207, now seen corresponding path program 1 times [2020-11-30 00:52:35,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:35,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971564380] [2020-11-30 00:52:35,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:36,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:52:36,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971564380] [2020-11-30 00:52:36,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:36,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:36,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326418581] [2020-11-30 00:52:36,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:36,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:36,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:36,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:36,135 INFO L87 Difference]: Start difference. First operand 174 states and 270 transitions. Second operand 3 states. [2020-11-30 00:52:36,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:36,360 INFO L93 Difference]: Finished difference Result 348 states and 542 transitions. [2020-11-30 00:52:36,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:36,364 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-30 00:52:36,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:36,367 INFO L225 Difference]: With dead ends: 348 [2020-11-30 00:52:36,367 INFO L226 Difference]: Without dead ends: 182 [2020-11-30 00:52:36,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:36,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-30 00:52:36,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2020-11-30 00:52:36,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-11-30 00:52:36,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 281 transitions. [2020-11-30 00:52:36,407 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 281 transitions. Word has length 27 [2020-11-30 00:52:36,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:36,408 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 281 transitions. [2020-11-30 00:52:36,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:36,409 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 281 transitions. [2020-11-30 00:52:36,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 00:52:36,414 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:36,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:52:36,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:52:36,416 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:36,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:36,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1794489921, now seen corresponding path program 1 times [2020-11-30 00:52:36,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:36,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274644676] [2020-11-30 00:52:36,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:36,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:52:36,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274644676] [2020-11-30 00:52:36,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:36,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:36,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723666231] [2020-11-30 00:52:36,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:36,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:36,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:36,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:36,544 INFO L87 Difference]: Start difference. First operand 180 states and 281 transitions. Second operand 3 states. [2020-11-30 00:52:36,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:36,762 INFO L93 Difference]: Finished difference Result 353 states and 552 transitions. [2020-11-30 00:52:36,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:36,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-30 00:52:36,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:36,765 INFO L225 Difference]: With dead ends: 353 [2020-11-30 00:52:36,765 INFO L226 Difference]: Without dead ends: 181 [2020-11-30 00:52:36,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:36,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-11-30 00:52:36,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2020-11-30 00:52:36,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-11-30 00:52:36,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 282 transitions. [2020-11-30 00:52:36,808 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 282 transitions. Word has length 27 [2020-11-30 00:52:36,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:36,809 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 282 transitions. [2020-11-30 00:52:36,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:36,809 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 282 transitions. [2020-11-30 00:52:36,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-30 00:52:36,811 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:36,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:52:36,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:52:36,812 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:36,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:36,812 INFO L82 PathProgramCache]: Analyzing trace with hash -594155684, now seen corresponding path program 1 times [2020-11-30 00:52:36,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:36,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748225886] [2020-11-30 00:52:36,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:36,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:52:36,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748225886] [2020-11-30 00:52:36,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:36,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:36,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679314696] [2020-11-30 00:52:36,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:36,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:36,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:36,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:36,857 INFO L87 Difference]: Start difference. First operand 181 states and 282 transitions. Second operand 3 states. [2020-11-30 00:52:37,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:37,024 INFO L93 Difference]: Finished difference Result 364 states and 564 transitions. [2020-11-30 00:52:37,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:37,024 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-11-30 00:52:37,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:37,027 INFO L225 Difference]: With dead ends: 364 [2020-11-30 00:52:37,027 INFO L226 Difference]: Without dead ends: 191 [2020-11-30 00:52:37,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:37,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-11-30 00:52:37,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 181. [2020-11-30 00:52:37,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-11-30 00:52:37,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 280 transitions. [2020-11-30 00:52:37,055 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 280 transitions. Word has length 28 [2020-11-30 00:52:37,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:37,056 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 280 transitions. [2020-11-30 00:52:37,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:37,056 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 280 transitions. [2020-11-30 00:52:37,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-30 00:52:37,057 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:37,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:52:37,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:52:37,058 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:37,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:37,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1519140995, now seen corresponding path program 1 times [2020-11-30 00:52:37,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:37,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232144006] [2020-11-30 00:52:37,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:37,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:52:37,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232144006] [2020-11-30 00:52:37,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:37,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:37,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994958128] [2020-11-30 00:52:37,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:37,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:37,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:37,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:37,133 INFO L87 Difference]: Start difference. First operand 181 states and 280 transitions. Second operand 3 states. [2020-11-30 00:52:37,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:37,318 INFO L93 Difference]: Finished difference Result 364 states and 560 transitions. [2020-11-30 00:52:37,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:37,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-11-30 00:52:37,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:37,321 INFO L225 Difference]: With dead ends: 364 [2020-11-30 00:52:37,321 INFO L226 Difference]: Without dead ends: 191 [2020-11-30 00:52:37,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:37,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-11-30 00:52:37,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 181. [2020-11-30 00:52:37,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-11-30 00:52:37,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 278 transitions. [2020-11-30 00:52:37,336 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 278 transitions. Word has length 29 [2020-11-30 00:52:37,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:37,343 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 278 transitions. [2020-11-30 00:52:37,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:37,345 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 278 transitions. [2020-11-30 00:52:37,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 00:52:37,347 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:37,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:52:37,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:52:37,348 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:37,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:37,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1615530751, now seen corresponding path program 1 times [2020-11-30 00:52:37,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:37,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290823883] [2020-11-30 00:52:37,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:37,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:52:37,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290823883] [2020-11-30 00:52:37,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:37,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:37,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616620536] [2020-11-30 00:52:37,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:37,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:37,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:37,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:37,455 INFO L87 Difference]: Start difference. First operand 181 states and 278 transitions. Second operand 3 states. [2020-11-30 00:52:37,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:37,636 INFO L93 Difference]: Finished difference Result 364 states and 556 transitions. [2020-11-30 00:52:37,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:37,637 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-11-30 00:52:37,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:37,639 INFO L225 Difference]: With dead ends: 364 [2020-11-30 00:52:37,639 INFO L226 Difference]: Without dead ends: 191 [2020-11-30 00:52:37,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:37,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-11-30 00:52:37,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 181. [2020-11-30 00:52:37,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-11-30 00:52:37,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 276 transitions. [2020-11-30 00:52:37,655 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 276 transitions. Word has length 30 [2020-11-30 00:52:37,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:37,657 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 276 transitions. [2020-11-30 00:52:37,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:37,658 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 276 transitions. [2020-11-30 00:52:37,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 00:52:37,659 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:37,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:52:37,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 00:52:37,659 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:37,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:37,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1189847454, now seen corresponding path program 1 times [2020-11-30 00:52:37,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:37,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971303936] [2020-11-30 00:52:37,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:37,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:52:37,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971303936] [2020-11-30 00:52:37,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:37,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:52:37,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981404610] [2020-11-30 00:52:37,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:52:37,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:37,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:52:37,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:52:37,748 INFO L87 Difference]: Start difference. First operand 181 states and 276 transitions. Second operand 4 states. [2020-11-30 00:52:38,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:38,098 INFO L93 Difference]: Finished difference Result 512 states and 779 transitions. [2020-11-30 00:52:38,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:52:38,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-11-30 00:52:38,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:38,101 INFO L225 Difference]: With dead ends: 512 [2020-11-30 00:52:38,101 INFO L226 Difference]: Without dead ends: 339 [2020-11-30 00:52:38,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:52:38,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-11-30 00:52:38,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 324. [2020-11-30 00:52:38,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-11-30 00:52:38,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 495 transitions. [2020-11-30 00:52:38,129 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 495 transitions. Word has length 30 [2020-11-30 00:52:38,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:38,129 INFO L481 AbstractCegarLoop]: Abstraction has 324 states and 495 transitions. [2020-11-30 00:52:38,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:52:38,130 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 495 transitions. [2020-11-30 00:52:38,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-30 00:52:38,133 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:38,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:52:38,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 00:52:38,134 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:38,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:38,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1632006041, now seen corresponding path program 1 times [2020-11-30 00:52:38,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:38,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088294829] [2020-11-30 00:52:38,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:38,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:52:38,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088294829] [2020-11-30 00:52:38,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:38,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:38,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660975961] [2020-11-30 00:52:38,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:38,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:38,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:38,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:38,235 INFO L87 Difference]: Start difference. First operand 324 states and 495 transitions. Second operand 3 states. [2020-11-30 00:52:38,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:38,485 INFO L93 Difference]: Finished difference Result 699 states and 1075 transitions. [2020-11-30 00:52:38,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:38,486 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-11-30 00:52:38,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:38,490 INFO L225 Difference]: With dead ends: 699 [2020-11-30 00:52:38,490 INFO L226 Difference]: Without dead ends: 383 [2020-11-30 00:52:38,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:38,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-11-30 00:52:38,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 375. [2020-11-30 00:52:38,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-11-30 00:52:38,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 582 transitions. [2020-11-30 00:52:38,519 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 582 transitions. Word has length 44 [2020-11-30 00:52:38,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:38,520 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 582 transitions. [2020-11-30 00:52:38,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:38,520 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 582 transitions. [2020-11-30 00:52:38,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-30 00:52:38,521 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:38,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:52:38,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 00:52:38,522 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:38,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:38,523 INFO L82 PathProgramCache]: Analyzing trace with hash -954576389, now seen corresponding path program 1 times [2020-11-30 00:52:38,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:38,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179958723] [2020-11-30 00:52:38,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:38,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:52:38,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179958723] [2020-11-30 00:52:38,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:38,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:38,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753420476] [2020-11-30 00:52:38,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:38,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:38,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:38,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:38,593 INFO L87 Difference]: Start difference. First operand 375 states and 582 transitions. Second operand 3 states. [2020-11-30 00:52:38,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:38,839 INFO L93 Difference]: Finished difference Result 776 states and 1211 transitions. [2020-11-30 00:52:38,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:38,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-11-30 00:52:38,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:38,843 INFO L225 Difference]: With dead ends: 776 [2020-11-30 00:52:38,843 INFO L226 Difference]: Without dead ends: 407 [2020-11-30 00:52:38,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:38,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-11-30 00:52:38,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 399. [2020-11-30 00:52:38,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-11-30 00:52:38,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 628 transitions. [2020-11-30 00:52:38,865 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 628 transitions. Word has length 45 [2020-11-30 00:52:38,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:38,865 INFO L481 AbstractCegarLoop]: Abstraction has 399 states and 628 transitions. [2020-11-30 00:52:38,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:38,866 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 628 transitions. [2020-11-30 00:52:38,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-30 00:52:38,867 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:38,867 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-30 00:52:38,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 00:52:38,868 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:38,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:38,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1426018212, now seen corresponding path program 1 times [2020-11-30 00:52:38,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:38,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033680852] [2020-11-30 00:52:38,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:38,920 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 00:52:38,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033680852] [2020-11-30 00:52:38,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:38,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:38,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416465112] [2020-11-30 00:52:38,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:38,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:38,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:38,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:38,922 INFO L87 Difference]: Start difference. First operand 399 states and 628 transitions. Second operand 3 states. [2020-11-30 00:52:39,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:39,121 INFO L93 Difference]: Finished difference Result 830 states and 1311 transitions. [2020-11-30 00:52:39,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:39,122 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-11-30 00:52:39,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:39,125 INFO L225 Difference]: With dead ends: 830 [2020-11-30 00:52:39,126 INFO L226 Difference]: Without dead ends: 439 [2020-11-30 00:52:39,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:39,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-11-30 00:52:39,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2020-11-30 00:52:39,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-11-30 00:52:39,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 693 transitions. [2020-11-30 00:52:39,151 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 693 transitions. Word has length 55 [2020-11-30 00:52:39,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:39,152 INFO L481 AbstractCegarLoop]: Abstraction has 439 states and 693 transitions. [2020-11-30 00:52:39,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:39,152 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 693 transitions. [2020-11-30 00:52:39,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-11-30 00:52:39,154 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:39,154 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-30 00:52:39,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 00:52:39,154 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:39,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:39,155 INFO L82 PathProgramCache]: Analyzing trace with hash 961137590, now seen corresponding path program 1 times [2020-11-30 00:52:39,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:39,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107606155] [2020-11-30 00:52:39,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:39,228 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-30 00:52:39,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107606155] [2020-11-30 00:52:39,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:39,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:39,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580300807] [2020-11-30 00:52:39,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:39,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:39,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:39,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:39,230 INFO L87 Difference]: Start difference. First operand 439 states and 693 transitions. Second operand 3 states. [2020-11-30 00:52:39,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:39,436 INFO L93 Difference]: Finished difference Result 912 states and 1441 transitions. [2020-11-30 00:52:39,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:39,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-11-30 00:52:39,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:39,441 INFO L225 Difference]: With dead ends: 912 [2020-11-30 00:52:39,441 INFO L226 Difference]: Without dead ends: 481 [2020-11-30 00:52:39,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:39,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-11-30 00:52:39,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 477. [2020-11-30 00:52:39,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-11-30 00:52:39,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 753 transitions. [2020-11-30 00:52:39,471 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 753 transitions. Word has length 82 [2020-11-30 00:52:39,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:39,471 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 753 transitions. [2020-11-30 00:52:39,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:39,472 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 753 transitions. [2020-11-30 00:52:39,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-30 00:52:39,473 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:39,473 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-30 00:52:39,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-30 00:52:39,474 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:39,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:39,474 INFO L82 PathProgramCache]: Analyzing trace with hash -986689731, now seen corresponding path program 1 times [2020-11-30 00:52:39,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:39,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900063097] [2020-11-30 00:52:39,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:39,544 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-30 00:52:39,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900063097] [2020-11-30 00:52:39,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:39,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:39,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382278835] [2020-11-30 00:52:39,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:39,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:39,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:39,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:39,547 INFO L87 Difference]: Start difference. First operand 477 states and 753 transitions. Second operand 3 states. [2020-11-30 00:52:39,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:39,770 INFO L93 Difference]: Finished difference Result 950 states and 1498 transitions. [2020-11-30 00:52:39,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:39,771 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-11-30 00:52:39,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:39,775 INFO L225 Difference]: With dead ends: 950 [2020-11-30 00:52:39,775 INFO L226 Difference]: Without dead ends: 481 [2020-11-30 00:52:39,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:39,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-11-30 00:52:39,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 477. [2020-11-30 00:52:39,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-11-30 00:52:39,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 750 transitions. [2020-11-30 00:52:39,806 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 750 transitions. Word has length 83 [2020-11-30 00:52:39,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:39,810 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 750 transitions. [2020-11-30 00:52:39,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:39,810 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 750 transitions. [2020-11-30 00:52:39,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-30 00:52:39,816 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:39,817 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-30 00:52:39,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-30 00:52:39,817 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:39,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:39,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1836560986, now seen corresponding path program 1 times [2020-11-30 00:52:39,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:39,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744104625] [2020-11-30 00:52:39,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:39,901 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-30 00:52:39,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744104625] [2020-11-30 00:52:39,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:39,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:39,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711837018] [2020-11-30 00:52:39,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:39,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:39,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:39,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:39,904 INFO L87 Difference]: Start difference. First operand 477 states and 750 transitions. Second operand 3 states. [2020-11-30 00:52:40,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:40,136 INFO L93 Difference]: Finished difference Result 998 states and 1573 transitions. [2020-11-30 00:52:40,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:40,136 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-11-30 00:52:40,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:40,141 INFO L225 Difference]: With dead ends: 998 [2020-11-30 00:52:40,141 INFO L226 Difference]: Without dead ends: 529 [2020-11-30 00:52:40,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:40,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-11-30 00:52:40,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 513. [2020-11-30 00:52:40,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-11-30 00:52:40,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 805 transitions. [2020-11-30 00:52:40,176 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 805 transitions. Word has length 84 [2020-11-30 00:52:40,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:40,176 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 805 transitions. [2020-11-30 00:52:40,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:40,177 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 805 transitions. [2020-11-30 00:52:40,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-30 00:52:40,179 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:40,179 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-30 00:52:40,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-30 00:52:40,179 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:40,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:40,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1112959693, now seen corresponding path program 1 times [2020-11-30 00:52:40,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:40,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179030674] [2020-11-30 00:52:40,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-30 00:52:40,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179030674] [2020-11-30 00:52:40,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:40,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:40,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767203455] [2020-11-30 00:52:40,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:40,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:40,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:40,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:40,226 INFO L87 Difference]: Start difference. First operand 513 states and 805 transitions. Second operand 3 states. [2020-11-30 00:52:40,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:40,497 INFO L93 Difference]: Finished difference Result 1034 states and 1624 transitions. [2020-11-30 00:52:40,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:40,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-11-30 00:52:40,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:40,502 INFO L225 Difference]: With dead ends: 1034 [2020-11-30 00:52:40,502 INFO L226 Difference]: Without dead ends: 529 [2020-11-30 00:52:40,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:40,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-11-30 00:52:40,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 513. [2020-11-30 00:52:40,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-11-30 00:52:40,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 801 transitions. [2020-11-30 00:52:40,536 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 801 transitions. Word has length 85 [2020-11-30 00:52:40,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:40,537 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 801 transitions. [2020-11-30 00:52:40,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:40,537 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 801 transitions. [2020-11-30 00:52:40,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-30 00:52:40,538 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:40,539 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-30 00:52:40,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-30 00:52:40,539 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:40,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:40,540 INFO L82 PathProgramCache]: Analyzing trace with hash 167103299, now seen corresponding path program 1 times [2020-11-30 00:52:40,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:40,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439596833] [2020-11-30 00:52:40,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:52:40,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439596833] [2020-11-30 00:52:40,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:40,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:40,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909644800] [2020-11-30 00:52:40,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:40,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:40,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:40,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:40,598 INFO L87 Difference]: Start difference. First operand 513 states and 801 transitions. Second operand 3 states. [2020-11-30 00:52:40,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:40,849 INFO L93 Difference]: Finished difference Result 1079 states and 1683 transitions. [2020-11-30 00:52:40,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:40,850 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-11-30 00:52:40,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:40,855 INFO L225 Difference]: With dead ends: 1079 [2020-11-30 00:52:40,855 INFO L226 Difference]: Without dead ends: 574 [2020-11-30 00:52:40,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:40,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-11-30 00:52:40,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 566. [2020-11-30 00:52:40,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2020-11-30 00:52:40,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 882 transitions. [2020-11-30 00:52:40,895 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 882 transitions. Word has length 85 [2020-11-30 00:52:40,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:40,895 INFO L481 AbstractCegarLoop]: Abstraction has 566 states and 882 transitions. [2020-11-30 00:52:40,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:40,896 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 882 transitions. [2020-11-30 00:52:40,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-30 00:52:40,897 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:40,897 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-30 00:52:40,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-30 00:52:40,898 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:40,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:40,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1767051647, now seen corresponding path program 1 times [2020-11-30 00:52:40,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:40,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657689677] [2020-11-30 00:52:40,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:40,951 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:52:40,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657689677] [2020-11-30 00:52:40,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:40,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:40,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900006800] [2020-11-30 00:52:40,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:40,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:40,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:40,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:40,954 INFO L87 Difference]: Start difference. First operand 566 states and 882 transitions. Second operand 3 states. [2020-11-30 00:52:41,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:41,220 INFO L93 Difference]: Finished difference Result 1132 states and 1762 transitions. [2020-11-30 00:52:41,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:41,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-11-30 00:52:41,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:41,225 INFO L225 Difference]: With dead ends: 1132 [2020-11-30 00:52:41,226 INFO L226 Difference]: Without dead ends: 572 [2020-11-30 00:52:41,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:41,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-11-30 00:52:41,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 564. [2020-11-30 00:52:41,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2020-11-30 00:52:41,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 877 transitions. [2020-11-30 00:52:41,262 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 877 transitions. Word has length 86 [2020-11-30 00:52:41,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:41,263 INFO L481 AbstractCegarLoop]: Abstraction has 564 states and 877 transitions. [2020-11-30 00:52:41,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:41,263 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 877 transitions. [2020-11-30 00:52:41,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-11-30 00:52:41,265 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:41,265 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-11-30 00:52:41,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-30 00:52:41,266 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:41,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:41,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1128064849, now seen corresponding path program 1 times [2020-11-30 00:52:41,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:41,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455091442] [2020-11-30 00:52:41,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-11-30 00:52:41,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455091442] [2020-11-30 00:52:41,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:41,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:41,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492122432] [2020-11-30 00:52:41,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:41,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:41,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:41,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:41,326 INFO L87 Difference]: Start difference. First operand 564 states and 877 transitions. Second operand 3 states. [2020-11-30 00:52:41,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:41,550 INFO L93 Difference]: Finished difference Result 1160 states and 1805 transitions. [2020-11-30 00:52:41,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:41,551 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-11-30 00:52:41,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:41,555 INFO L225 Difference]: With dead ends: 1160 [2020-11-30 00:52:41,555 INFO L226 Difference]: Without dead ends: 604 [2020-11-30 00:52:41,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:41,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2020-11-30 00:52:41,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 594. [2020-11-30 00:52:41,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2020-11-30 00:52:41,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 918 transitions. [2020-11-30 00:52:41,601 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 918 transitions. Word has length 107 [2020-11-30 00:52:41,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:41,601 INFO L481 AbstractCegarLoop]: Abstraction has 594 states and 918 transitions. [2020-11-30 00:52:41,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:41,601 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 918 transitions. [2020-11-30 00:52:41,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-11-30 00:52:41,604 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:41,604 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-11-30 00:52:41,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-30 00:52:41,607 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:41,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:41,607 INFO L82 PathProgramCache]: Analyzing trace with hash 56241544, now seen corresponding path program 1 times [2020-11-30 00:52:41,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:41,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789183058] [2020-11-30 00:52:41,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:41,669 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-11-30 00:52:41,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789183058] [2020-11-30 00:52:41,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:41,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:41,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745024165] [2020-11-30 00:52:41,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:41,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:41,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:41,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:41,673 INFO L87 Difference]: Start difference. First operand 594 states and 918 transitions. Second operand 3 states. [2020-11-30 00:52:41,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:41,886 INFO L93 Difference]: Finished difference Result 1190 states and 1840 transitions. [2020-11-30 00:52:41,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:41,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-11-30 00:52:41,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:41,891 INFO L225 Difference]: With dead ends: 1190 [2020-11-30 00:52:41,891 INFO L226 Difference]: Without dead ends: 604 [2020-11-30 00:52:41,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:41,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2020-11-30 00:52:41,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 594. [2020-11-30 00:52:41,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2020-11-30 00:52:41,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 912 transitions. [2020-11-30 00:52:41,930 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 912 transitions. Word has length 108 [2020-11-30 00:52:41,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:41,930 INFO L481 AbstractCegarLoop]: Abstraction has 594 states and 912 transitions. [2020-11-30 00:52:41,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:41,930 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 912 transitions. [2020-11-30 00:52:41,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-30 00:52:41,932 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:41,933 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2020-11-30 00:52:41,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-30 00:52:41,933 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:41,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:41,934 INFO L82 PathProgramCache]: Analyzing trace with hash -296831400, now seen corresponding path program 1 times [2020-11-30 00:52:41,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:41,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417501679] [2020-11-30 00:52:41,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:42,019 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-11-30 00:52:42,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417501679] [2020-11-30 00:52:42,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:42,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:42,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344142583] [2020-11-30 00:52:42,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:42,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:42,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:42,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:42,023 INFO L87 Difference]: Start difference. First operand 594 states and 912 transitions. Second operand 3 states. [2020-11-30 00:52:42,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:42,254 INFO L93 Difference]: Finished difference Result 1240 states and 1907 transitions. [2020-11-30 00:52:42,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:42,255 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-11-30 00:52:42,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:42,260 INFO L225 Difference]: With dead ends: 1240 [2020-11-30 00:52:42,260 INFO L226 Difference]: Without dead ends: 654 [2020-11-30 00:52:42,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:42,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2020-11-30 00:52:42,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 628. [2020-11-30 00:52:42,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-11-30 00:52:42,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 959 transitions. [2020-11-30 00:52:42,302 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 959 transitions. Word has length 111 [2020-11-30 00:52:42,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:42,303 INFO L481 AbstractCegarLoop]: Abstraction has 628 states and 959 transitions. [2020-11-30 00:52:42,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:42,303 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 959 transitions. [2020-11-30 00:52:42,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-11-30 00:52:42,305 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:42,306 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:52:42,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-30 00:52:42,306 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:42,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:42,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1499138703, now seen corresponding path program 1 times [2020-11-30 00:52:42,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:42,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612162647] [2020-11-30 00:52:42,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:42,372 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-11-30 00:52:42,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612162647] [2020-11-30 00:52:42,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:42,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:42,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209946313] [2020-11-30 00:52:42,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:42,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:42,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:42,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:42,375 INFO L87 Difference]: Start difference. First operand 628 states and 959 transitions. Second operand 3 states. [2020-11-30 00:52:42,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:42,596 INFO L93 Difference]: Finished difference Result 1274 states and 1948 transitions. [2020-11-30 00:52:42,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:42,596 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2020-11-30 00:52:42,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:42,601 INFO L225 Difference]: With dead ends: 1274 [2020-11-30 00:52:42,602 INFO L226 Difference]: Without dead ends: 654 [2020-11-30 00:52:42,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:42,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2020-11-30 00:52:42,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 628. [2020-11-30 00:52:42,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-11-30 00:52:42,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 953 transitions. [2020-11-30 00:52:42,645 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 953 transitions. Word has length 112 [2020-11-30 00:52:42,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:42,645 INFO L481 AbstractCegarLoop]: Abstraction has 628 states and 953 transitions. [2020-11-30 00:52:42,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:42,646 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 953 transitions. [2020-11-30 00:52:42,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-11-30 00:52:42,648 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:42,648 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-30 00:52:42,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-30 00:52:42,649 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:42,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:42,649 INFO L82 PathProgramCache]: Analyzing trace with hash 657079250, now seen corresponding path program 1 times [2020-11-30 00:52:42,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:42,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840462477] [2020-11-30 00:52:42,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-11-30 00:52:42,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840462477] [2020-11-30 00:52:42,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:42,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:42,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747377517] [2020-11-30 00:52:42,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:42,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:42,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:42,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:42,741 INFO L87 Difference]: Start difference. First operand 628 states and 953 transitions. Second operand 3 states. [2020-11-30 00:52:42,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:42,953 INFO L93 Difference]: Finished difference Result 1301 states and 1973 transitions. [2020-11-30 00:52:42,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:42,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2020-11-30 00:52:42,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:42,958 INFO L225 Difference]: With dead ends: 1301 [2020-11-30 00:52:42,958 INFO L226 Difference]: Without dead ends: 681 [2020-11-30 00:52:42,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:42,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2020-11-30 00:52:42,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 675. [2020-11-30 00:52:42,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2020-11-30 00:52:42,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1021 transitions. [2020-11-30 00:52:42,996 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1021 transitions. Word has length 123 [2020-11-30 00:52:42,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:42,997 INFO L481 AbstractCegarLoop]: Abstraction has 675 states and 1021 transitions. [2020-11-30 00:52:42,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:42,997 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1021 transitions. [2020-11-30 00:52:42,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-11-30 00:52:42,999 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:42,999 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:52:43,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-30 00:52:43,000 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:43,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:43,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1371731480, now seen corresponding path program 1 times [2020-11-30 00:52:43,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:43,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916993327] [2020-11-30 00:52:43,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:43,051 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-11-30 00:52:43,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916993327] [2020-11-30 00:52:43,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:43,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:43,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319959490] [2020-11-30 00:52:43,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:43,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:43,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:43,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:43,054 INFO L87 Difference]: Start difference. First operand 675 states and 1021 transitions. Second operand 3 states. [2020-11-30 00:52:43,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:43,143 INFO L93 Difference]: Finished difference Result 1344 states and 2031 transitions. [2020-11-30 00:52:43,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:43,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2020-11-30 00:52:43,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:43,151 INFO L225 Difference]: With dead ends: 1344 [2020-11-30 00:52:43,151 INFO L226 Difference]: Without dead ends: 1342 [2020-11-30 00:52:43,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:43,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2020-11-30 00:52:43,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1340. [2020-11-30 00:52:43,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2020-11-30 00:52:43,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 2027 transitions. [2020-11-30 00:52:43,219 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 2027 transitions. Word has length 124 [2020-11-30 00:52:43,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:43,219 INFO L481 AbstractCegarLoop]: Abstraction has 1340 states and 2027 transitions. [2020-11-30 00:52:43,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:43,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 2027 transitions. [2020-11-30 00:52:43,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-11-30 00:52:43,222 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:43,222 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:52:43,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-30 00:52:43,223 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:43,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:43,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1920674126, now seen corresponding path program 1 times [2020-11-30 00:52:43,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:43,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877557394] [2020-11-30 00:52:43,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:43,268 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-11-30 00:52:43,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877557394] [2020-11-30 00:52:43,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:43,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:43,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957192922] [2020-11-30 00:52:43,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:43,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:43,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:43,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:43,273 INFO L87 Difference]: Start difference. First operand 1340 states and 2027 transitions. Second operand 3 states. [2020-11-30 00:52:43,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:43,400 INFO L93 Difference]: Finished difference Result 3329 states and 5035 transitions. [2020-11-30 00:52:43,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:43,400 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-11-30 00:52:43,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:43,415 INFO L225 Difference]: With dead ends: 3329 [2020-11-30 00:52:43,415 INFO L226 Difference]: Without dead ends: 1997 [2020-11-30 00:52:43,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:43,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2020-11-30 00:52:43,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1995. [2020-11-30 00:52:43,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2020-11-30 00:52:43,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 3013 transitions. [2020-11-30 00:52:43,589 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 3013 transitions. Word has length 125 [2020-11-30 00:52:43,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:43,589 INFO L481 AbstractCegarLoop]: Abstraction has 1995 states and 3013 transitions. [2020-11-30 00:52:43,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:43,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 3013 transitions. [2020-11-30 00:52:43,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-11-30 00:52:43,595 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:43,595 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:52:43,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-30 00:52:43,596 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:43,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:43,597 INFO L82 PathProgramCache]: Analyzing trace with hash 232432692, now seen corresponding path program 1 times [2020-11-30 00:52:43,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:43,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832463993] [2020-11-30 00:52:43,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:43,658 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-11-30 00:52:43,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832463993] [2020-11-30 00:52:43,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:43,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:43,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867734511] [2020-11-30 00:52:43,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:43,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:43,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:43,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:43,661 INFO L87 Difference]: Start difference. First operand 1995 states and 3013 transitions. Second operand 3 states. [2020-11-30 00:52:43,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:43,830 INFO L93 Difference]: Finished difference Result 4617 states and 6972 transitions. [2020-11-30 00:52:43,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:43,831 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-11-30 00:52:43,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:43,850 INFO L225 Difference]: With dead ends: 4617 [2020-11-30 00:52:43,851 INFO L226 Difference]: Without dead ends: 2630 [2020-11-30 00:52:43,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:43,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2020-11-30 00:52:44,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2628. [2020-11-30 00:52:44,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2628 states. [2020-11-30 00:52:44,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2628 states to 2628 states and 3962 transitions. [2020-11-30 00:52:44,029 INFO L78 Accepts]: Start accepts. Automaton has 2628 states and 3962 transitions. Word has length 125 [2020-11-30 00:52:44,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:44,029 INFO L481 AbstractCegarLoop]: Abstraction has 2628 states and 3962 transitions. [2020-11-30 00:52:44,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:44,030 INFO L276 IsEmpty]: Start isEmpty. Operand 2628 states and 3962 transitions. [2020-11-30 00:52:44,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-11-30 00:52:44,035 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:44,035 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:52:44,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-30 00:52:44,036 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:44,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:44,036 INFO L82 PathProgramCache]: Analyzing trace with hash 357624272, now seen corresponding path program 1 times [2020-11-30 00:52:44,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:44,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286154801] [2020-11-30 00:52:44,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:44,150 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-11-30 00:52:44,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286154801] [2020-11-30 00:52:44,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:44,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:44,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380858808] [2020-11-30 00:52:44,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:44,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:44,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:44,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:44,153 INFO L87 Difference]: Start difference. First operand 2628 states and 3962 transitions. Second operand 3 states. [2020-11-30 00:52:44,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:44,491 INFO L93 Difference]: Finished difference Result 5376 states and 8099 transitions. [2020-11-30 00:52:44,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:44,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-11-30 00:52:44,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:44,512 INFO L225 Difference]: With dead ends: 5376 [2020-11-30 00:52:44,512 INFO L226 Difference]: Without dead ends: 2756 [2020-11-30 00:52:44,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:44,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2020-11-30 00:52:44,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2724. [2020-11-30 00:52:44,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2724 states. [2020-11-30 00:52:44,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 4077 transitions. [2020-11-30 00:52:44,741 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 4077 transitions. Word has length 133 [2020-11-30 00:52:44,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:44,742 INFO L481 AbstractCegarLoop]: Abstraction has 2724 states and 4077 transitions. [2020-11-30 00:52:44,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:44,742 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 4077 transitions. [2020-11-30 00:52:44,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-11-30 00:52:44,748 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:44,748 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2020-11-30 00:52:44,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-30 00:52:44,749 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:44,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:44,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1875401929, now seen corresponding path program 1 times [2020-11-30 00:52:44,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:44,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416675926] [2020-11-30 00:52:44,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:44,808 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-11-30 00:52:44,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416675926] [2020-11-30 00:52:44,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:44,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:44,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001331704] [2020-11-30 00:52:44,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:44,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:44,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:44,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:44,811 INFO L87 Difference]: Start difference. First operand 2724 states and 4077 transitions. Second operand 3 states. [2020-11-30 00:52:45,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:45,147 INFO L93 Difference]: Finished difference Result 5472 states and 8182 transitions. [2020-11-30 00:52:45,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:45,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-11-30 00:52:45,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:45,168 INFO L225 Difference]: With dead ends: 5472 [2020-11-30 00:52:45,169 INFO L226 Difference]: Without dead ends: 2756 [2020-11-30 00:52:45,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:45,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2020-11-30 00:52:45,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2724. [2020-11-30 00:52:45,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2724 states. [2020-11-30 00:52:45,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 4045 transitions. [2020-11-30 00:52:45,375 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 4045 transitions. Word has length 134 [2020-11-30 00:52:45,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:45,375 INFO L481 AbstractCegarLoop]: Abstraction has 2724 states and 4045 transitions. [2020-11-30 00:52:45,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:45,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 4045 transitions. [2020-11-30 00:52:45,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-11-30 00:52:45,380 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:45,380 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:52:45,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-11-30 00:52:45,381 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:45,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:45,381 INFO L82 PathProgramCache]: Analyzing trace with hash 214407641, now seen corresponding path program 1 times [2020-11-30 00:52:45,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:45,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728066163] [2020-11-30 00:52:45,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:45,445 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-11-30 00:52:45,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728066163] [2020-11-30 00:52:45,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:45,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:45,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130076171] [2020-11-30 00:52:45,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:45,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:45,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:45,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:45,448 INFO L87 Difference]: Start difference. First operand 2724 states and 4045 transitions. Second operand 3 states. [2020-11-30 00:52:45,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:45,833 INFO L93 Difference]: Finished difference Result 5522 states and 8175 transitions. [2020-11-30 00:52:45,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:45,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2020-11-30 00:52:45,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:45,854 INFO L225 Difference]: With dead ends: 5522 [2020-11-30 00:52:45,855 INFO L226 Difference]: Without dead ends: 2806 [2020-11-30 00:52:45,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:45,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2020-11-30 00:52:46,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2724. [2020-11-30 00:52:46,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2724 states. [2020-11-30 00:52:46,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3957 transitions. [2020-11-30 00:52:46,044 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3957 transitions. Word has length 164 [2020-11-30 00:52:46,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:46,044 INFO L481 AbstractCegarLoop]: Abstraction has 2724 states and 3957 transitions. [2020-11-30 00:52:46,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:46,045 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3957 transitions. [2020-11-30 00:52:46,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-11-30 00:52:46,051 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:46,051 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:52:46,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-11-30 00:52:46,052 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:46,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:46,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1161445527, now seen corresponding path program 1 times [2020-11-30 00:52:46,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:46,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540211218] [2020-11-30 00:52:46,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:46,135 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-11-30 00:52:46,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540211218] [2020-11-30 00:52:46,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:52:46,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:52:46,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057464856] [2020-11-30 00:52:46,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:46,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:46,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:46,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:46,138 INFO L87 Difference]: Start difference. First operand 2724 states and 3957 transitions. Second operand 3 states. [2020-11-30 00:52:46,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:46,525 INFO L93 Difference]: Finished difference Result 5712 states and 8274 transitions. [2020-11-30 00:52:46,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:46,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2020-11-30 00:52:46,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:46,568 INFO L225 Difference]: With dead ends: 5712 [2020-11-30 00:52:46,577 INFO L226 Difference]: Without dead ends: 2996 [2020-11-30 00:52:46,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:52:46,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2996 states. [2020-11-30 00:52:46,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2996 to 2840. [2020-11-30 00:52:46,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2840 states. [2020-11-30 00:52:46,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2840 states to 2840 states and 4045 transitions. [2020-11-30 00:52:46,760 INFO L78 Accepts]: Start accepts. Automaton has 2840 states and 4045 transitions. Word has length 164 [2020-11-30 00:52:46,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:46,761 INFO L481 AbstractCegarLoop]: Abstraction has 2840 states and 4045 transitions. [2020-11-30 00:52:46,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:46,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2840 states and 4045 transitions. [2020-11-30 00:52:46,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-11-30 00:52:46,767 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:46,767 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:52:46,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-11-30 00:52:46,768 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:46,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:46,768 INFO L82 PathProgramCache]: Analyzing trace with hash -2016709837, now seen corresponding path program 1 times [2020-11-30 00:52:46,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:46,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818999944] [2020-11-30 00:52:46,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:46,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:46,892 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 155 proven. 11 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-11-30 00:52:46,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818999944] [2020-11-30 00:52:46,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247607885] [2020-11-30 00:52:46,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2386ece-f1dd-4be8-8b91-43cb829d3726/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:52:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:47,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 00:52:47,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:52:47,271 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2020-11-30 00:52:47,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:52:47,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-11-30 00:52:47,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061117627] [2020-11-30 00:52:47,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:47,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:47,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:47,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:52:47,274 INFO L87 Difference]: Start difference. First operand 2840 states and 4045 transitions. Second operand 3 states. [2020-11-30 00:52:47,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:47,490 INFO L93 Difference]: Finished difference Result 8485 states and 12072 transitions. [2020-11-30 00:52:47,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:47,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2020-11-30 00:52:47,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:47,503 INFO L225 Difference]: With dead ends: 8485 [2020-11-30 00:52:47,504 INFO L226 Difference]: Without dead ends: 5653 [2020-11-30 00:52:47,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:52:47,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5653 states. [2020-11-30 00:52:47,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5653 to 5651. [2020-11-30 00:52:47,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5651 states. [2020-11-30 00:52:47,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5651 states to 5651 states and 8034 transitions. [2020-11-30 00:52:47,812 INFO L78 Accepts]: Start accepts. Automaton has 5651 states and 8034 transitions. Word has length 172 [2020-11-30 00:52:47,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:47,813 INFO L481 AbstractCegarLoop]: Abstraction has 5651 states and 8034 transitions. [2020-11-30 00:52:47,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:47,813 INFO L276 IsEmpty]: Start isEmpty. Operand 5651 states and 8034 transitions. [2020-11-30 00:52:47,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-11-30 00:52:47,822 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:47,822 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:52:48,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:52:48,036 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:48,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:48,036 INFO L82 PathProgramCache]: Analyzing trace with hash 594356241, now seen corresponding path program 1 times [2020-11-30 00:52:48,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:48,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561101820] [2020-11-30 00:52:48,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 155 proven. 11 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-11-30 00:52:48,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561101820] [2020-11-30 00:52:48,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106015104] [2020-11-30 00:52:48,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2386ece-f1dd-4be8-8b91-43cb829d3726/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:52:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:48,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:52:48,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:52:48,327 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2020-11-30 00:52:48,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:52:48,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-11-30 00:52:48,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578493243] [2020-11-30 00:52:48,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:48,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:48,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:48,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:52:48,330 INFO L87 Difference]: Start difference. First operand 5651 states and 8034 transitions. Second operand 3 states. [2020-11-30 00:52:48,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:48,887 INFO L93 Difference]: Finished difference Result 11837 states and 16799 transitions. [2020-11-30 00:52:48,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:48,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2020-11-30 00:52:48,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:48,905 INFO L225 Difference]: With dead ends: 11837 [2020-11-30 00:52:48,905 INFO L226 Difference]: Without dead ends: 5995 [2020-11-30 00:52:48,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:52:48,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5995 states. [2020-11-30 00:52:49,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5995 to 5835. [2020-11-30 00:52:49,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5835 states. [2020-11-30 00:52:49,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5835 states to 5835 states and 8266 transitions. [2020-11-30 00:52:49,231 INFO L78 Accepts]: Start accepts. Automaton has 5835 states and 8266 transitions. Word has length 173 [2020-11-30 00:52:49,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:49,232 INFO L481 AbstractCegarLoop]: Abstraction has 5835 states and 8266 transitions. [2020-11-30 00:52:49,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:49,232 INFO L276 IsEmpty]: Start isEmpty. Operand 5835 states and 8266 transitions. [2020-11-30 00:52:49,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-11-30 00:52:49,243 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:49,244 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:52:49,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:52:49,460 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:49,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:49,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1057591537, now seen corresponding path program 1 times [2020-11-30 00:52:49,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:49,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443873541] [2020-11-30 00:52:49,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:49,567 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 130 proven. 6 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-11-30 00:52:49,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443873541] [2020-11-30 00:52:49,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795684453] [2020-11-30 00:52:49,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2386ece-f1dd-4be8-8b91-43cb829d3726/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:52:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:49,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:52:49,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:52:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-11-30 00:52:49,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:52:49,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-11-30 00:52:49,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458366452] [2020-11-30 00:52:49,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:49,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:49,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:49,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:52:49,841 INFO L87 Difference]: Start difference. First operand 5835 states and 8266 transitions. Second operand 3 states. [2020-11-30 00:52:50,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:50,348 INFO L93 Difference]: Finished difference Result 10594 states and 14958 transitions. [2020-11-30 00:52:50,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:50,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2020-11-30 00:52:50,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:50,364 INFO L225 Difference]: With dead ends: 10594 [2020-11-30 00:52:50,364 INFO L226 Difference]: Without dead ends: 4616 [2020-11-30 00:52:50,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:52:50,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4616 states. [2020-11-30 00:52:50,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4616 to 4472. [2020-11-30 00:52:50,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4472 states. [2020-11-30 00:52:50,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 6325 transitions. [2020-11-30 00:52:50,672 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 6325 transitions. Word has length 174 [2020-11-30 00:52:50,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:50,672 INFO L481 AbstractCegarLoop]: Abstraction has 4472 states and 6325 transitions. [2020-11-30 00:52:50,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:50,673 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 6325 transitions. [2020-11-30 00:52:50,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-11-30 00:52:50,682 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:50,682 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 3, 3, 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] [2020-11-30 00:52:50,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:52:50,907 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:50,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:50,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1886384411, now seen corresponding path program 1 times [2020-11-30 00:52:50,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:50,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719457687] [2020-11-30 00:52:50,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:51,016 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 151 proven. 78 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-11-30 00:52:51,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719457687] [2020-11-30 00:52:51,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654479533] [2020-11-30 00:52:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2386ece-f1dd-4be8-8b91-43cb829d3726/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:52:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:51,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:52:51,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:52:51,189 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-11-30 00:52:51,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:52:51,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2020-11-30 00:52:51,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053614216] [2020-11-30 00:52:51,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:51,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:51,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:51,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:52:51,191 INFO L87 Difference]: Start difference. First operand 4472 states and 6325 transitions. Second operand 3 states. [2020-11-30 00:52:51,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:51,396 INFO L93 Difference]: Finished difference Result 8871 states and 12552 transitions. [2020-11-30 00:52:51,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:51,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2020-11-30 00:52:51,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:51,408 INFO L225 Difference]: With dead ends: 8871 [2020-11-30 00:52:51,409 INFO L226 Difference]: Without dead ends: 4474 [2020-11-30 00:52:51,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:52:51,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4474 states. [2020-11-30 00:52:51,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4474 to 4472. [2020-11-30 00:52:51,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4472 states. [2020-11-30 00:52:51,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 6309 transitions. [2020-11-30 00:52:51,640 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 6309 transitions. Word has length 177 [2020-11-30 00:52:51,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:51,641 INFO L481 AbstractCegarLoop]: Abstraction has 4472 states and 6309 transitions. [2020-11-30 00:52:51,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:51,641 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 6309 transitions. [2020-11-30 00:52:51,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-11-30 00:52:51,650 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:51,650 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 3, 3, 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] [2020-11-30 00:52:51,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:52:51,875 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:51,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:51,876 INFO L82 PathProgramCache]: Analyzing trace with hash 2144549849, now seen corresponding path program 1 times [2020-11-30 00:52:51,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:51,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854172905] [2020-11-30 00:52:51,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 151 proven. 78 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-11-30 00:52:51,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854172905] [2020-11-30 00:52:51,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108469813] [2020-11-30 00:52:52,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2386ece-f1dd-4be8-8b91-43cb829d3726/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:52:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:52,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:52:52,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:52:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2020-11-30 00:52:52,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:52:52,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2020-11-30 00:52:52,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066781382] [2020-11-30 00:52:52,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:52,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:52,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:52,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:52:52,182 INFO L87 Difference]: Start difference. First operand 4472 states and 6309 transitions. Second operand 3 states. [2020-11-30 00:52:52,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:52,560 INFO L93 Difference]: Finished difference Result 7804 states and 10978 transitions. [2020-11-30 00:52:52,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:52,561 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2020-11-30 00:52:52,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:52,570 INFO L225 Difference]: With dead ends: 7804 [2020-11-30 00:52:52,571 INFO L226 Difference]: Without dead ends: 3299 [2020-11-30 00:52:52,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:52:52,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3299 states. [2020-11-30 00:52:52,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3299 to 3179. [2020-11-30 00:52:52,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3179 states. [2020-11-30 00:52:52,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 4468 transitions. [2020-11-30 00:52:52,775 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 4468 transitions. Word has length 177 [2020-11-30 00:52:52,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:52,775 INFO L481 AbstractCegarLoop]: Abstraction has 3179 states and 4468 transitions. [2020-11-30 00:52:52,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:52,776 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 4468 transitions. [2020-11-30 00:52:52,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-11-30 00:52:52,784 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:52,784 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 3, 3, 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] [2020-11-30 00:52:53,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-11-30 00:52:53,011 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:53,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:53,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1199573560, now seen corresponding path program 2 times [2020-11-30 00:52:53,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:53,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347718880] [2020-11-30 00:52:53,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:53,135 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 191 proven. 19 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-11-30 00:52:53,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347718880] [2020-11-30 00:52:53,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753577738] [2020-11-30 00:52:53,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2386ece-f1dd-4be8-8b91-43cb829d3726/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:52:53,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-30 00:52:53,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:52:53,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:52:53,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:52:53,287 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2020-11-30 00:52:53,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:52:53,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-11-30 00:52:53,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117585773] [2020-11-30 00:52:53,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:53,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:53,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:53,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:52:53,291 INFO L87 Difference]: Start difference. First operand 3179 states and 4468 transitions. Second operand 3 states. [2020-11-30 00:52:53,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:53,634 INFO L93 Difference]: Finished difference Result 6415 states and 9031 transitions. [2020-11-30 00:52:53,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:53,635 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2020-11-30 00:52:53,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:53,644 INFO L225 Difference]: With dead ends: 6415 [2020-11-30 00:52:53,644 INFO L226 Difference]: Without dead ends: 3363 [2020-11-30 00:52:53,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:52:53,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3363 states. [2020-11-30 00:52:53,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3363 to 3179. [2020-11-30 00:52:53,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3179 states. [2020-11-30 00:52:53,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 4452 transitions. [2020-11-30 00:52:53,805 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 4452 transitions. Word has length 182 [2020-11-30 00:52:53,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:53,806 INFO L481 AbstractCegarLoop]: Abstraction has 3179 states and 4452 transitions. [2020-11-30 00:52:53,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:53,806 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 4452 transitions. [2020-11-30 00:52:53,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-11-30 00:52:53,813 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:53,814 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:52:54,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:52:54,027 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:54,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:54,028 INFO L82 PathProgramCache]: Analyzing trace with hash -97142242, now seen corresponding path program 1 times [2020-11-30 00:52:54,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:54,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163793234] [2020-11-30 00:52:54,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:54,132 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 195 proven. 23 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-11-30 00:52:54,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163793234] [2020-11-30 00:52:54,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050671649] [2020-11-30 00:52:54,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2386ece-f1dd-4be8-8b91-43cb829d3726/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:52:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:54,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:52:54,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:52:54,357 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2020-11-30 00:52:54,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:52:54,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-11-30 00:52:54,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632758361] [2020-11-30 00:52:54,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:52:54,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:54,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:52:54,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:52:54,360 INFO L87 Difference]: Start difference. First operand 3179 states and 4452 transitions. Second operand 3 states. [2020-11-30 00:52:54,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:54,745 INFO L93 Difference]: Finished difference Result 6311 states and 8831 transitions. [2020-11-30 00:52:54,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:52:54,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2020-11-30 00:52:54,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:54,755 INFO L225 Difference]: With dead ends: 6311 [2020-11-30 00:52:54,755 INFO L226 Difference]: Without dead ends: 3275 [2020-11-30 00:52:54,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:52:54,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2020-11-30 00:52:54,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3179. [2020-11-30 00:52:54,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3179 states. [2020-11-30 00:52:54,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 4436 transitions. [2020-11-30 00:52:54,921 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 4436 transitions. Word has length 184 [2020-11-30 00:52:54,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:54,922 INFO L481 AbstractCegarLoop]: Abstraction has 3179 states and 4436 transitions. [2020-11-30 00:52:54,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:52:54,922 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 4436 transitions. [2020-11-30 00:52:54,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-11-30 00:52:54,929 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:54,929 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:52:55,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-11-30 00:52:55,155 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:55,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:55,156 INFO L82 PathProgramCache]: Analyzing trace with hash -301230506, now seen corresponding path program 3 times [2020-11-30 00:52:55,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:55,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517928410] [2020-11-30 00:52:55,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:52:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 196 proven. 27 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-11-30 00:52:55,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517928410] [2020-11-30 00:52:55,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838037812] [2020-11-30 00:52:55,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2386ece-f1dd-4be8-8b91-43cb829d3726/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:52:55,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-11-30 00:52:55,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:52:55,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 00:52:55,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:52:55,419 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2020-11-30 00:52:55,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:52:55,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2020-11-30 00:52:55,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318404679] [2020-11-30 00:52:55,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:52:55,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:52:55,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:52:55,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:52:55,423 INFO L87 Difference]: Start difference. First operand 3179 states and 4436 transitions. Second operand 4 states. [2020-11-30 00:52:55,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:52:55,891 INFO L93 Difference]: Finished difference Result 6549 states and 9060 transitions. [2020-11-30 00:52:55,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:52:55,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 189 [2020-11-30 00:52:55,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:52:55,902 INFO L225 Difference]: With dead ends: 6549 [2020-11-30 00:52:55,902 INFO L226 Difference]: Without dead ends: 3561 [2020-11-30 00:52:55,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:52:55,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2020-11-30 00:52:56,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3171. [2020-11-30 00:52:56,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3171 states. [2020-11-30 00:52:56,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 4420 transitions. [2020-11-30 00:52:56,109 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 4420 transitions. Word has length 189 [2020-11-30 00:52:56,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:52:56,110 INFO L481 AbstractCegarLoop]: Abstraction has 3171 states and 4420 transitions. [2020-11-30 00:52:56,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:52:56,110 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 4420 transitions. [2020-11-30 00:52:56,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-11-30 00:52:56,118 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:56,119 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 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] [2020-11-30 00:52:56,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-11-30 00:52:56,347 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:52:56,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:56,348 INFO L82 PathProgramCache]: Analyzing trace with hash -2051917229, now seen corresponding path program 1 times [2020-11-30 00:52:56,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:56,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103034037] [2020-11-30 00:52:56,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:52:56,427 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:52:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:52:56,490 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:52:56,607 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:52:56,607 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:52:56,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-11-30 00:52:56,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:52:56 BoogieIcfgContainer [2020-11-30 00:52:56,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:52:56,871 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:52:56,871 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:52:56,871 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:52:56,872 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:52:34" (3/4) ... [2020-11-30 00:52:56,874 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:52:57,112 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c2386ece-f1dd-4be8-8b91-43cb829d3726/bin/uautomizer/witness.graphml [2020-11-30 00:52:57,112 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:52:57,115 INFO L168 Benchmark]: Toolchain (without parser) took 24565.67 ms. Allocated memory was 100.7 MB in the beginning and 943.7 MB in the end (delta: 843.1 MB). Free memory was 73.9 MB in the beginning and 713.0 MB in the end (delta: -639.0 MB). Peak memory consumption was 203.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:52:57,115 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 100.7 MB. Free memory was 61.1 MB in the beginning and 61.1 MB in the end (delta: 41.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:52:57,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 496.64 ms. Allocated memory is still 100.7 MB. Free memory was 73.9 MB in the beginning and 73.6 MB in the end (delta: 358.1 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:52:57,116 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.38 ms. Allocated memory is still 100.7 MB. Free memory was 73.6 MB in the beginning and 70.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:52:57,116 INFO L168 Benchmark]: Boogie Preprocessor took 75.81 ms. Allocated memory is still 100.7 MB. Free memory was 70.8 MB in the beginning and 68.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:52:57,117 INFO L168 Benchmark]: RCFGBuilder took 1389.46 ms. Allocated memory was 100.7 MB in the beginning and 132.1 MB in the end (delta: 31.5 MB). Free memory was 68.3 MB in the beginning and 74.3 MB in the end (delta: -6.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:52:57,117 INFO L168 Benchmark]: TraceAbstraction took 22277.71 ms. Allocated memory was 132.1 MB in the beginning and 943.7 MB in the end (delta: 811.6 MB). Free memory was 74.0 MB in the beginning and 735.0 MB in the end (delta: -661.0 MB). Peak memory consumption was 153.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:52:57,118 INFO L168 Benchmark]: Witness Printer took 241.83 ms. Allocated memory is still 943.7 MB. Free memory was 735.0 MB in the beginning and 713.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:52:57,121 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 100.7 MB. Free memory was 61.1 MB in the beginning and 61.1 MB in the end (delta: 41.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 496.64 ms. Allocated memory is still 100.7 MB. Free memory was 73.9 MB in the beginning and 73.6 MB in the end (delta: 358.1 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.38 ms. Allocated memory is still 100.7 MB. Free memory was 73.6 MB in the beginning and 70.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.81 ms. Allocated memory is still 100.7 MB. Free memory was 70.8 MB in the beginning and 68.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1389.46 ms. Allocated memory was 100.7 MB in the beginning and 132.1 MB in the end (delta: 31.5 MB). Free memory was 68.3 MB in the beginning and 74.3 MB in the end (delta: -6.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 22277.71 ms. Allocated memory was 132.1 MB in the beginning and 943.7 MB in the end (delta: 811.6 MB). Free memory was 74.0 MB in the beginning and 735.0 MB in the end (delta: -661.0 MB). Peak memory consumption was 153.8 MB. Max. memory is 16.1 GB. * Witness Printer took 241.83 ms. Allocated memory is still 943.7 MB. Free memory was 735.0 MB in the beginning and 713.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L637] int s ; [L638] int tmp ; [L642] s = 8464 [L14] int s__info_callback = __VERIFIER_nondet_int() ; [L15] int s__in_handshake = __VERIFIER_nondet_int() ; [L16] int s__state ; [L17] int s__new_session ; [L18] int s__server ; [L19] int s__version = __VERIFIER_nondet_int() ; [L20] int s__type ; [L21] int s__init_num ; [L22] int s__hit = __VERIFIER_nondet_int() ; [L23] int s__rwstate ; [L24] int s__init_buf___0 = 1; [L25] int s__debug = __VERIFIER_nondet_int() ; [L26] int s__shutdown ; [L27] int s__cert = __VERIFIER_nondet_int() ; [L28] int s__options = __VERIFIER_nondet_int() ; [L29] int s__verify_mode = __VERIFIER_nondet_int() ; [L30] int s__session__peer = __VERIFIER_nondet_int() ; [L31] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L32] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L34] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L35] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L36] int s__s3__tmp__cert_request ; [L37] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__use_rsa_tmp ; [L39] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L40] int s__s3__tmp__new_cipher__algorithms ; [L41] int s__s3__tmp__next_state___0 ; [L42] int s__s3__tmp__new_cipher__algo_strength ; [L43] int s__session__cipher ; [L44] int buf ; [L45] unsigned long l ; [L46] unsigned long Time ; [L47] unsigned long tmp ; [L48] int cb ; [L49] long num1 = __VERIFIER_nondet_long() ; [L50] int ret ; [L51] int new_state ; [L52] int state ; [L53] int skip ; [L54] int got_new_session ; [L55] int tmp___1 = __VERIFIER_nondet_int() ; [L56] int tmp___2 = __VERIFIER_nondet_int() ; [L57] int tmp___3 = __VERIFIER_nondet_int() ; [L58] int tmp___4 = __VERIFIER_nondet_int() ; [L59] int tmp___5 = __VERIFIER_nondet_int() ; [L60] int tmp___6 = __VERIFIER_nondet_int() ; [L61] int tmp___7 = __VERIFIER_nondet_int() ; [L62] long tmp___8 = __VERIFIER_nondet_long() ; [L63] int tmp___9 = __VERIFIER_nondet_int() ; [L64] int tmp___10 = __VERIFIER_nondet_int() ; [L65] int blastFlag ; [L66] int __cil_tmp55 ; [L67] unsigned long __cil_tmp56 ; [L68] unsigned long __cil_tmp57 ; [L69] unsigned long __cil_tmp58 = __VERIFIER_nondet_ulong() ; [L70] unsigned long __cil_tmp59 ; [L71] int __cil_tmp60 ; [L72] unsigned long __cil_tmp61 ; [L75] s__state = initial_state [L76] blastFlag = 0 [L77] tmp = __VERIFIER_nondet_int() [L78] Time = tmp [L79] cb = 0 [L80] ret = -1 [L81] skip = 0 [L82] got_new_session = 0 [L83] COND TRUE s__info_callback != 0 [L84] cb = s__info_callback [L90] s__in_handshake ++ [L91] COND TRUE tmp___1 + 12288 [L92] COND TRUE tmp___2 + 16384 [L96] COND FALSE !(s__cert == 0) [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND TRUE s__state == 8464 [L273] s__shutdown = 0 [L274] ret = __VERIFIER_nondet_int() [L275] COND TRUE blastFlag == 0 [L276] blastFlag = 1 [L278] COND FALSE !(ret <= 0) [L281] got_new_session = 1 [L282] s__state = 8496 [L283] s__init_num = 0 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND FALSE !(state == 8576) [L621] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND TRUE s__state == 8496 [L287] ret = __VERIFIER_nondet_int() [L288] COND TRUE blastFlag == 1 [L289] blastFlag = 2 [L295] COND FALSE !(ret <= 0) [L298] COND FALSE !(\read(s__hit)) [L301] s__state = 8512 [L303] s__init_num = 0 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND FALSE !(state == 8576) [L621] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND FALSE !(s__state == 8496) [L139] COND FALSE !(s__state == 8497) [L142] COND TRUE s__state == 8512 [L308] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L309] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L310] COND TRUE __cil_tmp56 + 256UL [L311] skip = 1 [L319] s__state = 8528 [L320] s__init_num = 0 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND FALSE !(state == 8576) [L621] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND FALSE !(s__state == 8496) [L139] COND FALSE !(s__state == 8497) [L142] COND FALSE !(s__state == 8512) [L145] COND FALSE !(s__state == 8513) [L148] COND TRUE s__state == 8528 [L324] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L325] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L327] __cil_tmp57 = (unsigned long )s__options [L328] COND TRUE __cil_tmp57 + 2097152UL [L329] s__s3__tmp__use_rsa_tmp = 1 [L334] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L361] ret = __VERIFIER_nondet_int() [L362] COND FALSE !(ret <= 0) [L379] s__state = 8544 [L380] s__init_num = 0 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND FALSE !(state == 8576) [L621] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND FALSE !(s__state == 8496) [L139] COND FALSE !(s__state == 8497) [L142] COND FALSE !(s__state == 8512) [L145] COND FALSE !(s__state == 8513) [L148] COND FALSE !(s__state == 8528) [L151] COND FALSE !(s__state == 8529) [L154] COND TRUE s__state == 8544 [L384] COND TRUE s__verify_mode + 1 [L385] COND FALSE !(s__session__peer != 0) [L396] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L397] __cil_tmp61 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L398] COND FALSE !(__cil_tmp61 + 256UL) [L408] s__s3__tmp__cert_request = 1 [L409] ret = __VERIFIER_nondet_int() [L410] COND FALSE !(ret <= 0) [L413] s__state = 8448 [L414] s__s3__tmp__next_state___0 = 8576 [L415] s__init_num = 0 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND FALSE !(state == 8576) [L621] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND FALSE !(s__state == 8496) [L139] COND FALSE !(s__state == 8497) [L142] COND FALSE !(s__state == 8512) [L145] COND FALSE !(s__state == 8513) [L148] COND FALSE !(s__state == 8528) [L151] COND FALSE !(s__state == 8529) [L154] COND FALSE !(s__state == 8544) [L157] COND FALSE !(s__state == 8545) [L160] COND FALSE !(s__state == 8560) [L163] COND FALSE !(s__state == 8561) [L166] COND TRUE s__state == 8448 [L436] COND FALSE !(num1 > 0L) [L445] s__state = s__s3__tmp__next_state___0 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND FALSE !(state == 8576) [L621] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND FALSE !(s__state == 8496) [L139] COND FALSE !(s__state == 8497) [L142] COND FALSE !(s__state == 8512) [L145] COND FALSE !(s__state == 8513) [L148] COND FALSE !(s__state == 8528) [L151] COND FALSE !(s__state == 8529) [L154] COND FALSE !(s__state == 8544) [L157] COND FALSE !(s__state == 8545) [L160] COND FALSE !(s__state == 8560) [L163] COND FALSE !(s__state == 8561) [L166] COND FALSE !(s__state == 8448) [L169] COND TRUE s__state == 8576 [L449] ret = __VERIFIER_nondet_int() [L450] COND FALSE !(ret <= 0) [L453] COND FALSE !(ret == 2) [L456] ret = __VERIFIER_nondet_int() [L457] COND FALSE !(ret <= 0) [L460] s__init_num = 0 [L461] s__state = 8592 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND TRUE state == 8576 [L605] COND TRUE s__state == 8592 [L606] COND TRUE tmp___1 != -12288 [L607] COND TRUE tmp___2 != -16384 [L608] COND TRUE __cil_tmp56 != 4294967040 [L609] COND TRUE __cil_tmp58 != 4294967294 [L610] COND TRUE tmp___7 != 1024 [L611] COND TRUE tmp___7 != 512 [L3] __assert_fail("0", "s3_srvr_11.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 150 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.9s, OverallIterations: 38, TraceHistogramMax: 7, AutomataDifference: 10.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6459 SDtfs, 5740 SDslu, 2456 SDs, 0 SdLazy, 3268 SolverSat, 1244 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1549 GetRequests, 1488 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5835occurred in iteration=31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.7s AutomataMinimizationTime, 37 MinimizatonAttempts, 1605 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 5451 NumberOfCodeBlocks, 5159 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 5214 ConstructedInterpolants, 0 QuantifiedInterpolants, 1228424 SizeOfPredicates, 8 NumberOfNonLiveVariables, 2643 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 45 InterpolantComputations, 37 PerfectInterpolantSequences, 6988/7241 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...