./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-1.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_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/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 70c3bc063fdec0bf22217db797a4f26edc24e29e ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/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 70c3bc063fdec0bf22217db797a4f26edc24e29e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 [2020-11-29 19:55:21,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:55:21,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:55:21,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:55:21,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:55:21,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:55:21,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:55:21,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:55:21,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:55:21,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:55:21,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:55:21,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:55:21,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:55:21,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:55:21,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:55:21,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:55:21,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:55:21,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:55:21,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:55:21,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:55:21,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:55:21,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:55:21,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:55:21,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:55:21,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:55:21,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:55:21,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:55:21,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:55:21,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:55:21,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:55:21,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:55:21,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:55:21,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:55:21,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:55:21,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:55:21,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:55:21,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:55:21,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:55:21,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:55:21,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:55:21,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:55:21,645 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:55:21,697 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:55:21,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:55:21,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:55:21,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:55:21,701 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:55:21,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:55:21,701 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:55:21,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:55:21,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:55:21,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:55:21,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:55:21,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:55:21,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:55:21,705 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:55:21,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:55:21,705 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:55:21,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:55:21,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:55:21,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:55:21,706 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:55:21,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:55:21,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:55:21,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:55:21,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:55:21,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:55:21,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:55:21,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:55:21,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:55:21,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:55:21,709 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_48f5c6d5-6825-48fd-a184-d41786844331/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70c3bc063fdec0bf22217db797a4f26edc24e29e [2020-11-29 19:55:22,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:55:22,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:55:22,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:55:22,070 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:55:22,071 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:55:22,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/../../sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-1.c [2020-11-29 19:55:22,174 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/data/ff4abc4cd/8ebef72695ef49fb86d2ab5a97c100dd/FLAG058df7752 [2020-11-29 19:55:22,900 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:55:22,900 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-1.c [2020-11-29 19:55:22,954 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/data/ff4abc4cd/8ebef72695ef49fb86d2ab5a97c100dd/FLAG058df7752 [2020-11-29 19:55:23,166 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/data/ff4abc4cd/8ebef72695ef49fb86d2ab5a97c100dd [2020-11-29 19:55:23,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:55:23,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:55:23,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:55:23,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:55:23,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:55:23,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:55:23" (1/1) ... [2020-11-29 19:55:23,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bdb1726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:23, skipping insertion in model container [2020-11-29 19:55:23,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:55:23" (1/1) ... [2020-11-29 19:55:23,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:55:23,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:55:23,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:55:23,888 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:55:24,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:55:24,074 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:55:24,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:24 WrapperNode [2020-11-29 19:55:24,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:55:24,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:55:24,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:55:24,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:55:24,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:24" (1/1) ... [2020-11-29 19:55:24,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:24" (1/1) ... [2020-11-29 19:55:24,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:55:24,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:55:24,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:55:24,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:55:24,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:24" (1/1) ... [2020-11-29 19:55:24,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:24" (1/1) ... [2020-11-29 19:55:24,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:24" (1/1) ... [2020-11-29 19:55:24,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:24" (1/1) ... [2020-11-29 19:55:24,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:24" (1/1) ... [2020-11-29 19:55:24,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:24" (1/1) ... [2020-11-29 19:55:24,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:24" (1/1) ... [2020-11-29 19:55:24,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:55:24,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:55:24,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:55:24,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:55:24,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/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 [2020-11-29 19:55:24,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 19:55:24,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:55:24,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 19:55:24,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 19:55:24,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 19:55:24,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:55:24,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 19:55:24,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:55:24,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:55:24,967 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 19:55:26,367 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-11-29 19:55:26,367 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-11-29 19:55:26,378 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:55:26,379 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 19:55:26,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:55:26 BoogieIcfgContainer [2020-11-29 19:55:26,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:55:26,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:55:26,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:55:26,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:55:26,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:55:23" (1/3) ... [2020-11-29 19:55:26,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc3f579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:55:26, skipping insertion in model container [2020-11-29 19:55:26,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:24" (2/3) ... [2020-11-29 19:55:26,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc3f579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:55:26, skipping insertion in model container [2020-11-29 19:55:26,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:55:26" (3/3) ... [2020-11-29 19:55:26,392 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.11.i.cil-1.c [2020-11-29 19:55:26,406 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:55:26,412 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:55:26,427 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:55:26,456 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:55:26,457 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:55:26,457 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:55:26,457 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:55:26,457 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:55:26,457 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:55:26,458 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:55:26,458 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:55:26,479 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2020-11-29 19:55:26,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-29 19:55:26,488 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:26,489 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] [2020-11-29 19:55:26,489 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:26,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:26,496 INFO L82 PathProgramCache]: Analyzing trace with hash -2031756972, now seen corresponding path program 1 times [2020-11-29 19:55:26,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:26,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843292655] [2020-11-29 19:55:26,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:26,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:26,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843292655] [2020-11-29 19:55:26,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:26,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:26,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111413359] [2020-11-29 19:55:26,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:26,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:26,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:26,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:26,938 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 4 states. [2020-11-29 19:55:27,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:27,695 INFO L93 Difference]: Finished difference Result 324 states and 548 transitions. [2020-11-29 19:55:27,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:27,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-11-29 19:55:27,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:27,720 INFO L225 Difference]: With dead ends: 324 [2020-11-29 19:55:27,720 INFO L226 Difference]: Without dead ends: 163 [2020-11-29 19:55:27,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:27,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-29 19:55:27,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 146. [2020-11-29 19:55:27,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-29 19:55:27,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 226 transitions. [2020-11-29 19:55:27,818 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 226 transitions. Word has length 35 [2020-11-29 19:55:27,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:27,819 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 226 transitions. [2020-11-29 19:55:27,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:27,820 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 226 transitions. [2020-11-29 19:55:27,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-29 19:55:27,825 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:27,825 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:27,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:55:27,826 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:27,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:27,828 INFO L82 PathProgramCache]: Analyzing trace with hash 2027967358, now seen corresponding path program 1 times [2020-11-29 19:55:27,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:27,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398865281] [2020-11-29 19:55:27,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:28,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398865281] [2020-11-29 19:55:28,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:28,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:28,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406710303] [2020-11-29 19:55:28,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:28,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:28,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:28,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:28,047 INFO L87 Difference]: Start difference. First operand 146 states and 226 transitions. Second operand 4 states. [2020-11-29 19:55:28,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:28,641 INFO L93 Difference]: Finished difference Result 290 states and 443 transitions. [2020-11-29 19:55:28,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:28,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-11-29 19:55:28,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:28,643 INFO L225 Difference]: With dead ends: 290 [2020-11-29 19:55:28,644 INFO L226 Difference]: Without dead ends: 163 [2020-11-29 19:55:28,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:28,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-29 19:55:28,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 146. [2020-11-29 19:55:28,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-29 19:55:28,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 225 transitions. [2020-11-29 19:55:28,660 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 225 transitions. Word has length 48 [2020-11-29 19:55:28,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:28,661 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 225 transitions. [2020-11-29 19:55:28,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:28,661 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 225 transitions. [2020-11-29 19:55:28,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-29 19:55:28,664 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:28,664 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:28,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:55:28,665 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:28,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:28,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1944321008, now seen corresponding path program 1 times [2020-11-29 19:55:28,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:28,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556337565] [2020-11-29 19:55:28,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:28,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:28,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556337565] [2020-11-29 19:55:28,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:28,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:28,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878278255] [2020-11-29 19:55:28,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:28,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:28,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:28,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:28,810 INFO L87 Difference]: Start difference. First operand 146 states and 225 transitions. Second operand 4 states. [2020-11-29 19:55:29,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:29,328 INFO L93 Difference]: Finished difference Result 289 states and 441 transitions. [2020-11-29 19:55:29,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:29,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-11-29 19:55:29,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:29,331 INFO L225 Difference]: With dead ends: 289 [2020-11-29 19:55:29,332 INFO L226 Difference]: Without dead ends: 162 [2020-11-29 19:55:29,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:29,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-11-29 19:55:29,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 146. [2020-11-29 19:55:29,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-29 19:55:29,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 224 transitions. [2020-11-29 19:55:29,356 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 224 transitions. Word has length 49 [2020-11-29 19:55:29,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:29,356 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 224 transitions. [2020-11-29 19:55:29,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:29,357 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 224 transitions. [2020-11-29 19:55:29,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-29 19:55:29,368 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:29,368 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] [2020-11-29 19:55:29,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:55:29,371 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:29,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:29,372 INFO L82 PathProgramCache]: Analyzing trace with hash -2008072389, now seen corresponding path program 1 times [2020-11-29 19:55:29,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:29,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270275957] [2020-11-29 19:55:29,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:29,604 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:29,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270275957] [2020-11-29 19:55:29,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:29,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:29,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862934416] [2020-11-29 19:55:29,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:29,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:29,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:29,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:29,608 INFO L87 Difference]: Start difference. First operand 146 states and 224 transitions. Second operand 4 states. [2020-11-29 19:55:30,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:30,123 INFO L93 Difference]: Finished difference Result 287 states and 438 transitions. [2020-11-29 19:55:30,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:30,123 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-11-29 19:55:30,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:30,125 INFO L225 Difference]: With dead ends: 287 [2020-11-29 19:55:30,125 INFO L226 Difference]: Without dead ends: 160 [2020-11-29 19:55:30,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:30,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-11-29 19:55:30,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 146. [2020-11-29 19:55:30,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-29 19:55:30,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 223 transitions. [2020-11-29 19:55:30,138 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 223 transitions. Word has length 49 [2020-11-29 19:55:30,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:30,140 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 223 transitions. [2020-11-29 19:55:30,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:30,140 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 223 transitions. [2020-11-29 19:55:30,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-29 19:55:30,141 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:30,142 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:30,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 19:55:30,142 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:30,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:30,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1467926917, now seen corresponding path program 1 times [2020-11-29 19:55:30,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:30,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038528565] [2020-11-29 19:55:30,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:30,285 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:30,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038528565] [2020-11-29 19:55:30,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:30,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:30,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646866887] [2020-11-29 19:55:30,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:30,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:30,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:30,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:30,289 INFO L87 Difference]: Start difference. First operand 146 states and 223 transitions. Second operand 4 states. [2020-11-29 19:55:30,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:30,691 INFO L93 Difference]: Finished difference Result 286 states and 436 transitions. [2020-11-29 19:55:30,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:30,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-11-29 19:55:30,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:30,693 INFO L225 Difference]: With dead ends: 286 [2020-11-29 19:55:30,693 INFO L226 Difference]: Without dead ends: 159 [2020-11-29 19:55:30,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:30,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-29 19:55:30,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 146. [2020-11-29 19:55:30,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-29 19:55:30,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 222 transitions. [2020-11-29 19:55:30,704 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 222 transitions. Word has length 49 [2020-11-29 19:55:30,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:30,705 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 222 transitions. [2020-11-29 19:55:30,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:30,705 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 222 transitions. [2020-11-29 19:55:30,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-29 19:55:30,706 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:30,707 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-29 19:55:30,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 19:55:30,707 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:30,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:30,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1078741852, now seen corresponding path program 1 times [2020-11-29 19:55:30,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:30,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276953149] [2020-11-29 19:55:30,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:30,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:30,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276953149] [2020-11-29 19:55:30,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:30,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:30,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633752747] [2020-11-29 19:55:30,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:30,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:30,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:30,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:30,809 INFO L87 Difference]: Start difference. First operand 146 states and 222 transitions. Second operand 4 states. [2020-11-29 19:55:31,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:31,288 INFO L93 Difference]: Finished difference Result 286 states and 435 transitions. [2020-11-29 19:55:31,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:31,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-11-29 19:55:31,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:31,290 INFO L225 Difference]: With dead ends: 286 [2020-11-29 19:55:31,290 INFO L226 Difference]: Without dead ends: 159 [2020-11-29 19:55:31,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:31,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-29 19:55:31,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 146. [2020-11-29 19:55:31,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-29 19:55:31,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 221 transitions. [2020-11-29 19:55:31,300 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 221 transitions. Word has length 49 [2020-11-29 19:55:31,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:31,300 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 221 transitions. [2020-11-29 19:55:31,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:31,301 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 221 transitions. [2020-11-29 19:55:31,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-29 19:55:31,302 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:31,302 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-29 19:55:31,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 19:55:31,302 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:31,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:31,304 INFO L82 PathProgramCache]: Analyzing trace with hash 231094087, now seen corresponding path program 1 times [2020-11-29 19:55:31,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:31,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468598795] [2020-11-29 19:55:31,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:31,393 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:31,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468598795] [2020-11-29 19:55:31,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:31,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:31,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464575323] [2020-11-29 19:55:31,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:31,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:31,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:31,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:31,403 INFO L87 Difference]: Start difference. First operand 146 states and 221 transitions. Second operand 4 states. [2020-11-29 19:55:31,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:31,857 INFO L93 Difference]: Finished difference Result 286 states and 434 transitions. [2020-11-29 19:55:31,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:31,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-11-29 19:55:31,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:31,859 INFO L225 Difference]: With dead ends: 286 [2020-11-29 19:55:31,859 INFO L226 Difference]: Without dead ends: 159 [2020-11-29 19:55:31,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:31,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-29 19:55:31,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 146. [2020-11-29 19:55:31,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-29 19:55:31,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 220 transitions. [2020-11-29 19:55:31,866 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 220 transitions. Word has length 50 [2020-11-29 19:55:31,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:31,866 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 220 transitions. [2020-11-29 19:55:31,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:31,867 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 220 transitions. [2020-11-29 19:55:31,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-29 19:55:31,868 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:31,868 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-29 19:55:31,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 19:55:31,868 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:31,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:31,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1862851913, now seen corresponding path program 1 times [2020-11-29 19:55:31,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:31,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297278770] [2020-11-29 19:55:31,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:31,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:31,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297278770] [2020-11-29 19:55:31,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:31,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:31,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737832191] [2020-11-29 19:55:31,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:31,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:31,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:31,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:31,977 INFO L87 Difference]: Start difference. First operand 146 states and 220 transitions. Second operand 4 states. [2020-11-29 19:55:32,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:32,438 INFO L93 Difference]: Finished difference Result 286 states and 433 transitions. [2020-11-29 19:55:32,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:32,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-11-29 19:55:32,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:32,440 INFO L225 Difference]: With dead ends: 286 [2020-11-29 19:55:32,440 INFO L226 Difference]: Without dead ends: 159 [2020-11-29 19:55:32,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:32,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-29 19:55:32,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 146. [2020-11-29 19:55:32,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-29 19:55:32,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 219 transitions. [2020-11-29 19:55:32,447 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 219 transitions. Word has length 51 [2020-11-29 19:55:32,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:32,448 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 219 transitions. [2020-11-29 19:55:32,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:32,448 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 219 transitions. [2020-11-29 19:55:32,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-29 19:55:32,449 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:32,449 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-29 19:55:32,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 19:55:32,450 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:32,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:32,450 INFO L82 PathProgramCache]: Analyzing trace with hash 589286348, now seen corresponding path program 1 times [2020-11-29 19:55:32,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:32,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042828240] [2020-11-29 19:55:32,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:32,529 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:32,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042828240] [2020-11-29 19:55:32,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:32,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:32,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430250216] [2020-11-29 19:55:32,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:32,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:32,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:32,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:32,533 INFO L87 Difference]: Start difference. First operand 146 states and 219 transitions. Second operand 4 states. [2020-11-29 19:55:32,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:32,951 INFO L93 Difference]: Finished difference Result 276 states and 419 transitions. [2020-11-29 19:55:32,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:32,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-11-29 19:55:32,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:32,954 INFO L225 Difference]: With dead ends: 276 [2020-11-29 19:55:32,954 INFO L226 Difference]: Without dead ends: 149 [2020-11-29 19:55:32,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:32,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-11-29 19:55:32,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2020-11-29 19:55:32,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-29 19:55:32,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 218 transitions. [2020-11-29 19:55:32,961 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 218 transitions. Word has length 52 [2020-11-29 19:55:32,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:32,961 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 218 transitions. [2020-11-29 19:55:32,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:32,962 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 218 transitions. [2020-11-29 19:55:32,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-29 19:55:32,963 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:32,964 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:32,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 19:55:32,966 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:32,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:32,969 INFO L82 PathProgramCache]: Analyzing trace with hash -350273228, now seen corresponding path program 1 times [2020-11-29 19:55:32,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:32,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540215373] [2020-11-29 19:55:32,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:33,082 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:33,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540215373] [2020-11-29 19:55:33,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:33,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:33,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174277] [2020-11-29 19:55:33,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:33,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:33,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:33,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:33,094 INFO L87 Difference]: Start difference. First operand 146 states and 218 transitions. Second operand 4 states. [2020-11-29 19:55:33,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:33,612 INFO L93 Difference]: Finished difference Result 316 states and 480 transitions. [2020-11-29 19:55:33,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:33,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-11-29 19:55:33,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:33,618 INFO L225 Difference]: With dead ends: 316 [2020-11-29 19:55:33,619 INFO L226 Difference]: Without dead ends: 189 [2020-11-29 19:55:33,619 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 [2020-11-29 19:55:33,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-11-29 19:55:33,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 168. [2020-11-29 19:55:33,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-11-29 19:55:33,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 256 transitions. [2020-11-29 19:55:33,630 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 256 transitions. Word has length 52 [2020-11-29 19:55:33,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:33,632 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 256 transitions. [2020-11-29 19:55:33,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:33,632 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 256 transitions. [2020-11-29 19:55:33,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-11-29 19:55:33,633 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:33,634 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:33,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 19:55:33,634 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:33,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:33,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1467398046, now seen corresponding path program 1 times [2020-11-29 19:55:33,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:33,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466680248] [2020-11-29 19:55:33,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:33,751 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:33,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466680248] [2020-11-29 19:55:33,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:33,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:33,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029063253] [2020-11-29 19:55:33,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:33,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:33,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:33,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:33,757 INFO L87 Difference]: Start difference. First operand 168 states and 256 transitions. Second operand 4 states. [2020-11-29 19:55:34,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:34,226 INFO L93 Difference]: Finished difference Result 338 states and 517 transitions. [2020-11-29 19:55:34,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:34,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-11-29 19:55:34,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:34,229 INFO L225 Difference]: With dead ends: 338 [2020-11-29 19:55:34,230 INFO L226 Difference]: Without dead ends: 189 [2020-11-29 19:55:34,230 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 [2020-11-29 19:55:34,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-11-29 19:55:34,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 168. [2020-11-29 19:55:34,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-11-29 19:55:34,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 255 transitions. [2020-11-29 19:55:34,238 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 255 transitions. Word has length 65 [2020-11-29 19:55:34,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:34,238 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 255 transitions. [2020-11-29 19:55:34,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:34,238 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 255 transitions. [2020-11-29 19:55:34,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-29 19:55:34,240 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:34,240 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:34,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 19:55:34,241 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:34,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:34,241 INFO L82 PathProgramCache]: Analyzing trace with hash -2142100496, now seen corresponding path program 1 times [2020-11-29 19:55:34,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:34,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661660687] [2020-11-29 19:55:34,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:34,305 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:34,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661660687] [2020-11-29 19:55:34,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:34,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:34,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255111473] [2020-11-29 19:55:34,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:34,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:34,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:34,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:34,308 INFO L87 Difference]: Start difference. First operand 168 states and 255 transitions. Second operand 4 states. [2020-11-29 19:55:34,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:34,812 INFO L93 Difference]: Finished difference Result 337 states and 514 transitions. [2020-11-29 19:55:34,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:34,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-11-29 19:55:34,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:34,815 INFO L225 Difference]: With dead ends: 337 [2020-11-29 19:55:34,815 INFO L226 Difference]: Without dead ends: 188 [2020-11-29 19:55:34,816 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 [2020-11-29 19:55:34,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-11-29 19:55:34,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 168. [2020-11-29 19:55:34,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-11-29 19:55:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 254 transitions. [2020-11-29 19:55:34,828 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 254 transitions. Word has length 66 [2020-11-29 19:55:34,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:34,828 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 254 transitions. [2020-11-29 19:55:34,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:34,829 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 254 transitions. [2020-11-29 19:55:34,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-29 19:55:34,830 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:34,830 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:34,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 19:55:34,831 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:34,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:34,831 INFO L82 PathProgramCache]: Analyzing trace with hash 2089115419, now seen corresponding path program 1 times [2020-11-29 19:55:34,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:34,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842297289] [2020-11-29 19:55:34,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:34,935 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:34,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842297289] [2020-11-29 19:55:34,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:34,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:34,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575259546] [2020-11-29 19:55:34,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:34,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:34,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:34,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:34,939 INFO L87 Difference]: Start difference. First operand 168 states and 254 transitions. Second operand 4 states. [2020-11-29 19:55:35,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:35,391 INFO L93 Difference]: Finished difference Result 335 states and 510 transitions. [2020-11-29 19:55:35,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:35,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-11-29 19:55:35,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:35,393 INFO L225 Difference]: With dead ends: 335 [2020-11-29 19:55:35,393 INFO L226 Difference]: Without dead ends: 186 [2020-11-29 19:55:35,394 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 [2020-11-29 19:55:35,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-11-29 19:55:35,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 168. [2020-11-29 19:55:35,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-11-29 19:55:35,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 253 transitions. [2020-11-29 19:55:35,404 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 253 transitions. Word has length 66 [2020-11-29 19:55:35,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:35,406 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 253 transitions. [2020-11-29 19:55:35,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:35,406 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 253 transitions. [2020-11-29 19:55:35,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-29 19:55:35,407 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:35,407 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 19:55:35,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 19:55:35,408 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:35,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:35,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1665706405, now seen corresponding path program 1 times [2020-11-29 19:55:35,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:35,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918714406] [2020-11-29 19:55:35,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:35,478 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:35,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918714406] [2020-11-29 19:55:35,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:35,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:35,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546569991] [2020-11-29 19:55:35,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:35,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:35,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:35,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:35,483 INFO L87 Difference]: Start difference. First operand 168 states and 253 transitions. Second operand 4 states. [2020-11-29 19:55:35,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:35,963 INFO L93 Difference]: Finished difference Result 334 states and 507 transitions. [2020-11-29 19:55:35,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:35,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-11-29 19:55:35,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:35,966 INFO L225 Difference]: With dead ends: 334 [2020-11-29 19:55:35,966 INFO L226 Difference]: Without dead ends: 185 [2020-11-29 19:55:35,967 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 [2020-11-29 19:55:35,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-11-29 19:55:35,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 168. [2020-11-29 19:55:35,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-11-29 19:55:35,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 252 transitions. [2020-11-29 19:55:35,973 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 252 transitions. Word has length 66 [2020-11-29 19:55:35,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:35,974 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 252 transitions. [2020-11-29 19:55:35,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:35,974 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 252 transitions. [2020-11-29 19:55:35,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-29 19:55:35,975 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:35,975 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:35,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-29 19:55:35,976 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:35,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:35,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1276521340, now seen corresponding path program 1 times [2020-11-29 19:55:35,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:35,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707008786] [2020-11-29 19:55:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:36,032 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:36,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707008786] [2020-11-29 19:55:36,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:36,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:36,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966504481] [2020-11-29 19:55:36,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:36,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:36,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:36,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:36,034 INFO L87 Difference]: Start difference. First operand 168 states and 252 transitions. Second operand 4 states. [2020-11-29 19:55:36,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:36,471 INFO L93 Difference]: Finished difference Result 334 states and 505 transitions. [2020-11-29 19:55:36,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:36,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-11-29 19:55:36,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:36,474 INFO L225 Difference]: With dead ends: 334 [2020-11-29 19:55:36,474 INFO L226 Difference]: Without dead ends: 185 [2020-11-29 19:55:36,475 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 [2020-11-29 19:55:36,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-11-29 19:55:36,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 168. [2020-11-29 19:55:36,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-11-29 19:55:36,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 251 transitions. [2020-11-29 19:55:36,482 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 251 transitions. Word has length 66 [2020-11-29 19:55:36,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:36,482 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 251 transitions. [2020-11-29 19:55:36,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:36,483 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 251 transitions. [2020-11-29 19:55:36,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-11-29 19:55:36,484 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:36,484 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:36,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-29 19:55:36,485 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:36,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:36,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1605102745, now seen corresponding path program 1 times [2020-11-29 19:55:36,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:36,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236445750] [2020-11-29 19:55:36,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:36,542 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:36,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236445750] [2020-11-29 19:55:36,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:36,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:36,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662642091] [2020-11-29 19:55:36,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:36,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:36,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:36,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:36,545 INFO L87 Difference]: Start difference. First operand 168 states and 251 transitions. Second operand 4 states. [2020-11-29 19:55:37,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:37,042 INFO L93 Difference]: Finished difference Result 334 states and 503 transitions. [2020-11-29 19:55:37,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:37,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-11-29 19:55:37,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:37,044 INFO L225 Difference]: With dead ends: 334 [2020-11-29 19:55:37,045 INFO L226 Difference]: Without dead ends: 185 [2020-11-29 19:55:37,045 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 [2020-11-29 19:55:37,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-11-29 19:55:37,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 168. [2020-11-29 19:55:37,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-11-29 19:55:37,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 250 transitions. [2020-11-29 19:55:37,055 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 250 transitions. Word has length 67 [2020-11-29 19:55:37,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:37,056 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 250 transitions. [2020-11-29 19:55:37,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:37,056 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 250 transitions. [2020-11-29 19:55:37,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-29 19:55:37,057 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:37,058 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-11-29 19:55:37,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-29 19:55:37,058 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:37,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:37,059 INFO L82 PathProgramCache]: Analyzing trace with hash 775324969, now seen corresponding path program 1 times [2020-11-29 19:55:37,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:37,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117818016] [2020-11-29 19:55:37,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:37,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117818016] [2020-11-29 19:55:37,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:37,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:37,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24581620] [2020-11-29 19:55:37,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:37,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:37,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:37,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:37,159 INFO L87 Difference]: Start difference. First operand 168 states and 250 transitions. Second operand 4 states. [2020-11-29 19:55:37,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:37,592 INFO L93 Difference]: Finished difference Result 334 states and 501 transitions. [2020-11-29 19:55:37,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:37,593 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-11-29 19:55:37,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:37,594 INFO L225 Difference]: With dead ends: 334 [2020-11-29 19:55:37,594 INFO L226 Difference]: Without dead ends: 185 [2020-11-29 19:55:37,595 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 [2020-11-29 19:55:37,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-11-29 19:55:37,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 168. [2020-11-29 19:55:37,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-11-29 19:55:37,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 249 transitions. [2020-11-29 19:55:37,601 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 249 transitions. Word has length 68 [2020-11-29 19:55:37,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:37,602 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 249 transitions. [2020-11-29 19:55:37,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:37,602 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 249 transitions. [2020-11-29 19:55:37,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-29 19:55:37,603 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:37,603 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-11-29 19:55:37,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-29 19:55:37,603 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:37,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:37,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1235689452, now seen corresponding path program 1 times [2020-11-29 19:55:37,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:37,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469854970] [2020-11-29 19:55:37,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:37,660 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:37,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469854970] [2020-11-29 19:55:37,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:37,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:37,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511103571] [2020-11-29 19:55:37,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:37,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:37,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:37,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:37,665 INFO L87 Difference]: Start difference. First operand 168 states and 249 transitions. Second operand 4 states. [2020-11-29 19:55:38,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:38,011 INFO L93 Difference]: Finished difference Result 324 states and 486 transitions. [2020-11-29 19:55:38,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:38,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-11-29 19:55:38,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:38,013 INFO L225 Difference]: With dead ends: 324 [2020-11-29 19:55:38,013 INFO L226 Difference]: Without dead ends: 175 [2020-11-29 19:55:38,014 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 [2020-11-29 19:55:38,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-11-29 19:55:38,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 168. [2020-11-29 19:55:38,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-11-29 19:55:38,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 248 transitions. [2020-11-29 19:55:38,020 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 248 transitions. Word has length 69 [2020-11-29 19:55:38,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:38,020 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 248 transitions. [2020-11-29 19:55:38,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:38,020 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 248 transitions. [2020-11-29 19:55:38,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-11-29 19:55:38,021 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:38,021 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 19:55:38,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-29 19:55:38,021 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:38,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:38,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1988306166, now seen corresponding path program 1 times [2020-11-29 19:55:38,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:38,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728127508] [2020-11-29 19:55:38,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:38,106 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:55:38,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728127508] [2020-11-29 19:55:38,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:38,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:38,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144644188] [2020-11-29 19:55:38,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:38,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:38,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:38,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:38,109 INFO L87 Difference]: Start difference. First operand 168 states and 248 transitions. Second operand 4 states. [2020-11-29 19:55:38,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:38,697 INFO L93 Difference]: Finished difference Result 424 states and 639 transitions. [2020-11-29 19:55:38,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:38,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-11-29 19:55:38,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:38,700 INFO L225 Difference]: With dead ends: 424 [2020-11-29 19:55:38,700 INFO L226 Difference]: Without dead ends: 275 [2020-11-29 19:55:38,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:38,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-11-29 19:55:38,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 198. [2020-11-29 19:55:38,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-11-29 19:55:38,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 300 transitions. [2020-11-29 19:55:38,709 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 300 transitions. Word has length 74 [2020-11-29 19:55:38,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:38,709 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 300 transitions. [2020-11-29 19:55:38,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:38,710 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 300 transitions. [2020-11-29 19:55:38,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-11-29 19:55:38,711 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:38,711 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 19:55:38,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-29 19:55:38,711 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:38,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:38,712 INFO L82 PathProgramCache]: Analyzing trace with hash -2060692724, now seen corresponding path program 1 times [2020-11-29 19:55:38,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:38,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074892538] [2020-11-29 19:55:38,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:38,788 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:55:38,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074892538] [2020-11-29 19:55:38,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:38,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:38,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712171966] [2020-11-29 19:55:38,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:38,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:38,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:38,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:38,790 INFO L87 Difference]: Start difference. First operand 198 states and 300 transitions. Second operand 4 states. [2020-11-29 19:55:39,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:39,254 INFO L93 Difference]: Finished difference Result 427 states and 655 transitions. [2020-11-29 19:55:39,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:39,255 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-11-29 19:55:39,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:39,257 INFO L225 Difference]: With dead ends: 427 [2020-11-29 19:55:39,257 INFO L226 Difference]: Without dead ends: 248 [2020-11-29 19:55:39,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:39,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-11-29 19:55:39,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 222. [2020-11-29 19:55:39,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-11-29 19:55:39,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 342 transitions. [2020-11-29 19:55:39,265 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 342 transitions. Word has length 74 [2020-11-29 19:55:39,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:39,265 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 342 transitions. [2020-11-29 19:55:39,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:39,266 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 342 transitions. [2020-11-29 19:55:39,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-11-29 19:55:39,267 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:39,267 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 19:55:39,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-29 19:55:39,267 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:39,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:39,268 INFO L82 PathProgramCache]: Analyzing trace with hash 880688961, now seen corresponding path program 1 times [2020-11-29 19:55:39,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:39,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644465187] [2020-11-29 19:55:39,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:39,364 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:55:39,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644465187] [2020-11-29 19:55:39,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:39,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:39,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556748458] [2020-11-29 19:55:39,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:39,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:39,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:39,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:39,366 INFO L87 Difference]: Start difference. First operand 222 states and 342 transitions. Second operand 4 states. [2020-11-29 19:55:39,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:39,909 INFO L93 Difference]: Finished difference Result 494 states and 761 transitions. [2020-11-29 19:55:39,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:39,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-11-29 19:55:39,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:39,912 INFO L225 Difference]: With dead ends: 494 [2020-11-29 19:55:39,912 INFO L226 Difference]: Without dead ends: 291 [2020-11-29 19:55:39,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:39,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-11-29 19:55:39,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 223. [2020-11-29 19:55:39,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-11-29 19:55:39,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 343 transitions. [2020-11-29 19:55:39,923 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 343 transitions. Word has length 75 [2020-11-29 19:55:39,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:39,924 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 343 transitions. [2020-11-29 19:55:39,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:39,924 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 343 transitions. [2020-11-29 19:55:39,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-29 19:55:39,925 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:39,925 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 19:55:39,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-29 19:55:39,926 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:39,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:39,926 INFO L82 PathProgramCache]: Analyzing trace with hash 301633263, now seen corresponding path program 1 times [2020-11-29 19:55:39,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:39,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103776896] [2020-11-29 19:55:39,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:40,015 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:55:40,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103776896] [2020-11-29 19:55:40,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:40,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:40,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499858524] [2020-11-29 19:55:40,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:40,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:40,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:40,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:40,018 INFO L87 Difference]: Start difference. First operand 223 states and 343 transitions. Second operand 4 states. [2020-11-29 19:55:40,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:40,594 INFO L93 Difference]: Finished difference Result 495 states and 761 transitions. [2020-11-29 19:55:40,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:40,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-11-29 19:55:40,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:40,598 INFO L225 Difference]: With dead ends: 495 [2020-11-29 19:55:40,598 INFO L226 Difference]: Without dead ends: 291 [2020-11-29 19:55:40,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:40,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-11-29 19:55:40,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 233. [2020-11-29 19:55:40,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-11-29 19:55:40,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 362 transitions. [2020-11-29 19:55:40,607 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 362 transitions. Word has length 81 [2020-11-29 19:55:40,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:40,608 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 362 transitions. [2020-11-29 19:55:40,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:40,608 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 362 transitions. [2020-11-29 19:55:40,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-11-29 19:55:40,609 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:40,610 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 19:55:40,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-29 19:55:40,610 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:40,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:40,610 INFO L82 PathProgramCache]: Analyzing trace with hash 542590269, now seen corresponding path program 1 times [2020-11-29 19:55:40,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:40,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488219728] [2020-11-29 19:55:40,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:40,692 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:55:40,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488219728] [2020-11-29 19:55:40,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:40,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:40,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134557840] [2020-11-29 19:55:40,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:40,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:40,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:40,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:40,695 INFO L87 Difference]: Start difference. First operand 233 states and 362 transitions. Second operand 4 states. [2020-11-29 19:55:41,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:41,207 INFO L93 Difference]: Finished difference Result 497 states and 768 transitions. [2020-11-29 19:55:41,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:41,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-11-29 19:55:41,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:41,210 INFO L225 Difference]: With dead ends: 497 [2020-11-29 19:55:41,210 INFO L226 Difference]: Without dead ends: 283 [2020-11-29 19:55:41,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:41,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-11-29 19:55:41,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 234. [2020-11-29 19:55:41,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-11-29 19:55:41,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 363 transitions. [2020-11-29 19:55:41,219 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 363 transitions. Word has length 82 [2020-11-29 19:55:41,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:41,219 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 363 transitions. [2020-11-29 19:55:41,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:41,219 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 363 transitions. [2020-11-29 19:55:41,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-11-29 19:55:41,220 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:41,221 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 19:55:41,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-29 19:55:41,221 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:41,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:41,221 INFO L82 PathProgramCache]: Analyzing trace with hash 354437512, now seen corresponding path program 1 times [2020-11-29 19:55:41,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:41,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358516829] [2020-11-29 19:55:41,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:41,298 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:55:41,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358516829] [2020-11-29 19:55:41,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:41,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:41,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474463] [2020-11-29 19:55:41,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:41,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:41,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:41,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:41,303 INFO L87 Difference]: Start difference. First operand 234 states and 363 transitions. Second operand 4 states. [2020-11-29 19:55:41,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:41,888 INFO L93 Difference]: Finished difference Result 498 states and 768 transitions. [2020-11-29 19:55:41,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:41,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-11-29 19:55:41,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:41,891 INFO L225 Difference]: With dead ends: 498 [2020-11-29 19:55:41,891 INFO L226 Difference]: Without dead ends: 283 [2020-11-29 19:55:41,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:41,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-11-29 19:55:41,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 234. [2020-11-29 19:55:41,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-11-29 19:55:41,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 362 transitions. [2020-11-29 19:55:41,901 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 362 transitions. Word has length 87 [2020-11-29 19:55:41,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:41,903 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 362 transitions. [2020-11-29 19:55:41,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:41,903 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 362 transitions. [2020-11-29 19:55:41,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-11-29 19:55:41,905 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:41,905 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 19:55:41,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-29 19:55:41,905 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:41,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:41,906 INFO L82 PathProgramCache]: Analyzing trace with hash -2012257082, now seen corresponding path program 1 times [2020-11-29 19:55:41,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:41,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172428874] [2020-11-29 19:55:41,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:41,985 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:55:41,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172428874] [2020-11-29 19:55:41,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:41,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:41,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017331397] [2020-11-29 19:55:41,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:41,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:41,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:41,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:41,987 INFO L87 Difference]: Start difference. First operand 234 states and 362 transitions. Second operand 4 states. [2020-11-29 19:55:42,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:42,425 INFO L93 Difference]: Finished difference Result 475 states and 736 transitions. [2020-11-29 19:55:42,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:42,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-11-29 19:55:42,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:42,428 INFO L225 Difference]: With dead ends: 475 [2020-11-29 19:55:42,428 INFO L226 Difference]: Without dead ends: 260 [2020-11-29 19:55:42,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:42,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-11-29 19:55:42,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 234. [2020-11-29 19:55:42,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-11-29 19:55:42,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 361 transitions. [2020-11-29 19:55:42,437 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 361 transitions. Word has length 87 [2020-11-29 19:55:42,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:42,437 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 361 transitions. [2020-11-29 19:55:42,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:42,438 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 361 transitions. [2020-11-29 19:55:42,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-29 19:55:42,439 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:42,439 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 19:55:42,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-29 19:55:42,440 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:42,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:42,441 INFO L82 PathProgramCache]: Analyzing trace with hash 2010828614, now seen corresponding path program 1 times [2020-11-29 19:55:42,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:42,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035369544] [2020-11-29 19:55:42,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:42,507 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:55:42,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035369544] [2020-11-29 19:55:42,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:42,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:42,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241836384] [2020-11-29 19:55:42,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:42,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:42,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:42,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:42,510 INFO L87 Difference]: Start difference. First operand 234 states and 361 transitions. Second operand 4 states. [2020-11-29 19:55:43,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:43,009 INFO L93 Difference]: Finished difference Result 497 states and 763 transitions. [2020-11-29 19:55:43,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:43,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-11-29 19:55:43,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:43,011 INFO L225 Difference]: With dead ends: 497 [2020-11-29 19:55:43,011 INFO L226 Difference]: Without dead ends: 282 [2020-11-29 19:55:43,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:43,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-11-29 19:55:43,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 234. [2020-11-29 19:55:43,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-11-29 19:55:43,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 360 transitions. [2020-11-29 19:55:43,019 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 360 transitions. Word has length 88 [2020-11-29 19:55:43,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:43,019 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 360 transitions. [2020-11-29 19:55:43,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:43,020 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 360 transitions. [2020-11-29 19:55:43,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-29 19:55:43,021 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:43,021 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-11-29 19:55:43,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-29 19:55:43,021 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:43,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:43,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1947077233, now seen corresponding path program 1 times [2020-11-29 19:55:43,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:43,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422769514] [2020-11-29 19:55:43,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:43,094 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:55:43,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422769514] [2020-11-29 19:55:43,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:43,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:43,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168714368] [2020-11-29 19:55:43,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:43,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:43,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:43,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:43,096 INFO L87 Difference]: Start difference. First operand 234 states and 360 transitions. Second operand 4 states. [2020-11-29 19:55:43,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:43,586 INFO L93 Difference]: Finished difference Result 495 states and 759 transitions. [2020-11-29 19:55:43,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:43,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-11-29 19:55:43,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:43,588 INFO L225 Difference]: With dead ends: 495 [2020-11-29 19:55:43,588 INFO L226 Difference]: Without dead ends: 280 [2020-11-29 19:55:43,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:43,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-11-29 19:55:43,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 234. [2020-11-29 19:55:43,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-11-29 19:55:43,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 359 transitions. [2020-11-29 19:55:43,595 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 359 transitions. Word has length 88 [2020-11-29 19:55:43,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:43,595 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 359 transitions. [2020-11-29 19:55:43,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:43,595 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 359 transitions. [2020-11-29 19:55:43,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-29 19:55:43,597 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:43,597 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-11-29 19:55:43,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-11-29 19:55:43,597 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:43,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:43,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1807744591, now seen corresponding path program 1 times [2020-11-29 19:55:43,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:43,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039137490] [2020-11-29 19:55:43,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:43,661 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:55:43,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039137490] [2020-11-29 19:55:43,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:43,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:43,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571016067] [2020-11-29 19:55:43,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:43,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:43,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:43,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:43,663 INFO L87 Difference]: Start difference. First operand 234 states and 359 transitions. Second operand 4 states. [2020-11-29 19:55:44,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:44,160 INFO L93 Difference]: Finished difference Result 494 states and 756 transitions. [2020-11-29 19:55:44,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:44,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-11-29 19:55:44,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:44,163 INFO L225 Difference]: With dead ends: 494 [2020-11-29 19:55:44,163 INFO L226 Difference]: Without dead ends: 279 [2020-11-29 19:55:44,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:44,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-11-29 19:55:44,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 234. [2020-11-29 19:55:44,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-11-29 19:55:44,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 358 transitions. [2020-11-29 19:55:44,170 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 358 transitions. Word has length 88 [2020-11-29 19:55:44,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:44,171 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 358 transitions. [2020-11-29 19:55:44,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:44,171 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 358 transitions. [2020-11-29 19:55:44,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-29 19:55:44,172 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:44,172 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 19:55:44,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-11-29 19:55:44,172 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:44,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:44,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1418559526, now seen corresponding path program 1 times [2020-11-29 19:55:44,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:44,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798989000] [2020-11-29 19:55:44,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:44,267 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-29 19:55:44,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798989000] [2020-11-29 19:55:44,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:44,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:55:44,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27459866] [2020-11-29 19:55:44,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:55:44,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:44,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:55:44,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:44,269 INFO L87 Difference]: Start difference. First operand 234 states and 358 transitions. Second operand 5 states. [2020-11-29 19:55:44,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:44,776 INFO L93 Difference]: Finished difference Result 470 states and 724 transitions. [2020-11-29 19:55:44,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:55:44,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-11-29 19:55:44,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:44,778 INFO L225 Difference]: With dead ends: 470 [2020-11-29 19:55:44,779 INFO L226 Difference]: Without dead ends: 255 [2020-11-29 19:55:44,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:55:44,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-11-29 19:55:44,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 254. [2020-11-29 19:55:44,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-11-29 19:55:44,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 384 transitions. [2020-11-29 19:55:44,787 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 384 transitions. Word has length 88 [2020-11-29 19:55:44,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:44,787 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 384 transitions. [2020-11-29 19:55:44,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:55:44,787 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 384 transitions. [2020-11-29 19:55:44,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-29 19:55:44,788 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:44,788 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-11-29 19:55:44,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-11-29 19:55:44,788 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:44,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:44,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1593988851, now seen corresponding path program 1 times [2020-11-29 19:55:44,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:44,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240413585] [2020-11-29 19:55:44,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:44,856 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:55:44,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240413585] [2020-11-29 19:55:44,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:44,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:44,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984200680] [2020-11-29 19:55:44,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:44,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:44,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:44,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:44,859 INFO L87 Difference]: Start difference. First operand 254 states and 384 transitions. Second operand 4 states. [2020-11-29 19:55:45,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:45,177 INFO L93 Difference]: Finished difference Result 512 states and 776 transitions. [2020-11-29 19:55:45,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:45,177 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-11-29 19:55:45,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:45,179 INFO L225 Difference]: With dead ends: 512 [2020-11-29 19:55:45,179 INFO L226 Difference]: Without dead ends: 277 [2020-11-29 19:55:45,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:45,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-11-29 19:55:45,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 254. [2020-11-29 19:55:45,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-11-29 19:55:45,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 383 transitions. [2020-11-29 19:55:45,188 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 383 transitions. Word has length 88 [2020-11-29 19:55:45,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:45,188 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 383 transitions. [2020-11-29 19:55:45,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:45,188 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 383 transitions. [2020-11-29 19:55:45,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-29 19:55:45,189 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:45,190 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-11-29 19:55:45,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-11-29 19:55:45,190 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:45,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:45,190 INFO L82 PathProgramCache]: Analyzing trace with hash 2134134323, now seen corresponding path program 1 times [2020-11-29 19:55:45,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:45,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121747172] [2020-11-29 19:55:45,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:45,262 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:55:45,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121747172] [2020-11-29 19:55:45,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:45,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:45,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054867804] [2020-11-29 19:55:45,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:45,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:45,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:45,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:45,265 INFO L87 Difference]: Start difference. First operand 254 states and 383 transitions. Second operand 4 states. [2020-11-29 19:55:45,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:45,723 INFO L93 Difference]: Finished difference Result 511 states and 773 transitions. [2020-11-29 19:55:45,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:45,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-11-29 19:55:45,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:45,726 INFO L225 Difference]: With dead ends: 511 [2020-11-29 19:55:45,726 INFO L226 Difference]: Without dead ends: 276 [2020-11-29 19:55:45,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:45,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-11-29 19:55:45,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 254. [2020-11-29 19:55:45,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-11-29 19:55:45,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 382 transitions. [2020-11-29 19:55:45,734 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 382 transitions. Word has length 88 [2020-11-29 19:55:45,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:45,735 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 382 transitions. [2020-11-29 19:55:45,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:45,735 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 382 transitions. [2020-11-29 19:55:45,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-29 19:55:45,736 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:45,736 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 19:55:45,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-11-29 19:55:45,737 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:45,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:45,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1582169212, now seen corresponding path program 1 times [2020-11-29 19:55:45,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:45,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478716806] [2020-11-29 19:55:45,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:45,796 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:55:45,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478716806] [2020-11-29 19:55:45,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:45,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:45,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124553699] [2020-11-29 19:55:45,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:45,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:45,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:45,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:45,799 INFO L87 Difference]: Start difference. First operand 254 states and 382 transitions. Second operand 4 states. [2020-11-29 19:55:46,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:46,288 INFO L93 Difference]: Finished difference Result 534 states and 801 transitions. [2020-11-29 19:55:46,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:46,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-11-29 19:55:46,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:46,291 INFO L225 Difference]: With dead ends: 534 [2020-11-29 19:55:46,291 INFO L226 Difference]: Without dead ends: 299 [2020-11-29 19:55:46,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:46,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-11-29 19:55:46,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 254. [2020-11-29 19:55:46,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-11-29 19:55:46,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 381 transitions. [2020-11-29 19:55:46,300 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 381 transitions. Word has length 89 [2020-11-29 19:55:46,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:46,301 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 381 transitions. [2020-11-29 19:55:46,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:46,301 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 381 transitions. [2020-11-29 19:55:46,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-29 19:55:46,302 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:46,302 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 19:55:46,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-11-29 19:55:46,303 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:46,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:46,303 INFO L82 PathProgramCache]: Analyzing trace with hash 356992834, now seen corresponding path program 1 times [2020-11-29 19:55:46,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:46,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616049615] [2020-11-29 19:55:46,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:46,366 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:55:46,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616049615] [2020-11-29 19:55:46,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:46,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:46,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243269584] [2020-11-29 19:55:46,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:46,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:46,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:46,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:46,369 INFO L87 Difference]: Start difference. First operand 254 states and 381 transitions. Second operand 4 states. [2020-11-29 19:55:46,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:46,730 INFO L93 Difference]: Finished difference Result 511 states and 769 transitions. [2020-11-29 19:55:46,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:46,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-11-29 19:55:46,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:46,732 INFO L225 Difference]: With dead ends: 511 [2020-11-29 19:55:46,732 INFO L226 Difference]: Without dead ends: 276 [2020-11-29 19:55:46,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:46,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-11-29 19:55:46,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 254. [2020-11-29 19:55:46,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-11-29 19:55:46,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 380 transitions. [2020-11-29 19:55:46,740 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 380 transitions. Word has length 89 [2020-11-29 19:55:46,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:46,740 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 380 transitions. [2020-11-29 19:55:46,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:46,741 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 380 transitions. [2020-11-29 19:55:46,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-11-29 19:55:46,742 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:46,742 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 19:55:46,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-11-29 19:55:46,742 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:46,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:46,743 INFO L82 PathProgramCache]: Analyzing trace with hash -2129784979, now seen corresponding path program 1 times [2020-11-29 19:55:46,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:46,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362964061] [2020-11-29 19:55:46,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:46,814 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:55:46,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362964061] [2020-11-29 19:55:46,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:46,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:46,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931757103] [2020-11-29 19:55:46,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:46,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:46,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:46,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:46,816 INFO L87 Difference]: Start difference. First operand 254 states and 380 transitions. Second operand 4 states. [2020-11-29 19:55:47,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:47,307 INFO L93 Difference]: Finished difference Result 534 states and 797 transitions. [2020-11-29 19:55:47,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:47,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-11-29 19:55:47,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:47,310 INFO L225 Difference]: With dead ends: 534 [2020-11-29 19:55:47,310 INFO L226 Difference]: Without dead ends: 299 [2020-11-29 19:55:47,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:47,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-11-29 19:55:47,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 254. [2020-11-29 19:55:47,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-11-29 19:55:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 379 transitions. [2020-11-29 19:55:47,325 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 379 transitions. Word has length 90 [2020-11-29 19:55:47,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:47,325 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 379 transitions. [2020-11-29 19:55:47,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:47,325 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 379 transitions. [2020-11-29 19:55:47,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-11-29 19:55:47,326 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:47,327 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 19:55:47,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-11-29 19:55:47,327 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:47,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:47,328 INFO L82 PathProgramCache]: Analyzing trace with hash -2145303697, now seen corresponding path program 1 times [2020-11-29 19:55:47,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:47,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908121747] [2020-11-29 19:55:47,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:47,384 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:55:47,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908121747] [2020-11-29 19:55:47,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:47,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:47,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953487047] [2020-11-29 19:55:47,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:47,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:47,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:47,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:47,386 INFO L87 Difference]: Start difference. First operand 254 states and 379 transitions. Second operand 4 states. [2020-11-29 19:55:47,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:47,705 INFO L93 Difference]: Finished difference Result 511 states and 765 transitions. [2020-11-29 19:55:47,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:47,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-11-29 19:55:47,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:47,707 INFO L225 Difference]: With dead ends: 511 [2020-11-29 19:55:47,707 INFO L226 Difference]: Without dead ends: 276 [2020-11-29 19:55:47,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:47,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-11-29 19:55:47,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 254. [2020-11-29 19:55:47,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-11-29 19:55:47,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 378 transitions. [2020-11-29 19:55:47,715 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 378 transitions. Word has length 90 [2020-11-29 19:55:47,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:47,716 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 378 transitions. [2020-11-29 19:55:47,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:47,716 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 378 transitions. [2020-11-29 19:55:47,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-29 19:55:47,717 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:47,717 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 19:55:47,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-11-29 19:55:47,717 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:47,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:47,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1086928127, now seen corresponding path program 1 times [2020-11-29 19:55:47,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:47,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561834230] [2020-11-29 19:55:47,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:47,784 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:55:47,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561834230] [2020-11-29 19:55:47,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:47,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:47,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362739207] [2020-11-29 19:55:47,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:47,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:47,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:47,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:47,787 INFO L87 Difference]: Start difference. First operand 254 states and 378 transitions. Second operand 4 states. [2020-11-29 19:55:48,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:48,172 INFO L93 Difference]: Finished difference Result 534 states and 793 transitions. [2020-11-29 19:55:48,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:48,172 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-11-29 19:55:48,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:48,174 INFO L225 Difference]: With dead ends: 534 [2020-11-29 19:55:48,174 INFO L226 Difference]: Without dead ends: 299 [2020-11-29 19:55:48,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:48,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-11-29 19:55:48,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 254. [2020-11-29 19:55:48,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-11-29 19:55:48,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 377 transitions. [2020-11-29 19:55:48,183 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 377 transitions. Word has length 91 [2020-11-29 19:55:48,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:48,183 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 377 transitions. [2020-11-29 19:55:48,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:48,184 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 377 transitions. [2020-11-29 19:55:48,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-29 19:55:48,185 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:48,185 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 19:55:48,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-11-29 19:55:48,185 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:48,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:48,186 INFO L82 PathProgramCache]: Analyzing trace with hash 605847869, now seen corresponding path program 1 times [2020-11-29 19:55:48,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:48,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893896386] [2020-11-29 19:55:48,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:48,255 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:55:48,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893896386] [2020-11-29 19:55:48,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:48,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:48,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010696181] [2020-11-29 19:55:48,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:48,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:48,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:48,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:48,257 INFO L87 Difference]: Start difference. First operand 254 states and 377 transitions. Second operand 4 states. [2020-11-29 19:55:48,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:48,776 INFO L93 Difference]: Finished difference Result 511 states and 761 transitions. [2020-11-29 19:55:48,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:48,776 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-11-29 19:55:48,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:48,778 INFO L225 Difference]: With dead ends: 511 [2020-11-29 19:55:48,778 INFO L226 Difference]: Without dead ends: 276 [2020-11-29 19:55:48,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:48,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-11-29 19:55:48,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 254. [2020-11-29 19:55:48,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-11-29 19:55:48,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 376 transitions. [2020-11-29 19:55:48,787 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 376 transitions. Word has length 91 [2020-11-29 19:55:48,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:48,787 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 376 transitions. [2020-11-29 19:55:48,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:48,787 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 376 transitions. [2020-11-29 19:55:48,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-11-29 19:55:48,788 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:48,788 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 19:55:48,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-11-29 19:55:48,789 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:48,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:48,789 INFO L82 PathProgramCache]: Analyzing trace with hash 738752008, now seen corresponding path program 1 times [2020-11-29 19:55:48,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:48,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005996294] [2020-11-29 19:55:48,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:48,854 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:55:48,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005996294] [2020-11-29 19:55:48,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:48,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:48,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968966607] [2020-11-29 19:55:48,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:48,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:48,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:48,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:48,857 INFO L87 Difference]: Start difference. First operand 254 states and 376 transitions. Second operand 4 states. [2020-11-29 19:55:49,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:49,299 INFO L93 Difference]: Finished difference Result 524 states and 777 transitions. [2020-11-29 19:55:49,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:49,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-11-29 19:55:49,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:49,302 INFO L225 Difference]: With dead ends: 524 [2020-11-29 19:55:49,302 INFO L226 Difference]: Without dead ends: 289 [2020-11-29 19:55:49,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:49,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-11-29 19:55:49,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 254. [2020-11-29 19:55:49,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-11-29 19:55:49,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 375 transitions. [2020-11-29 19:55:49,310 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 375 transitions. Word has length 92 [2020-11-29 19:55:49,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:49,311 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 375 transitions. [2020-11-29 19:55:49,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:49,311 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 375 transitions. [2020-11-29 19:55:49,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-11-29 19:55:49,312 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:49,312 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 19:55:49,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-11-29 19:55:49,312 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:49,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:49,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1289834102, now seen corresponding path program 1 times [2020-11-29 19:55:49,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:49,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166601647] [2020-11-29 19:55:49,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:49,404 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:55:49,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166601647] [2020-11-29 19:55:49,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:49,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:49,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562808448] [2020-11-29 19:55:49,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:49,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:49,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:49,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:49,406 INFO L87 Difference]: Start difference. First operand 254 states and 375 transitions. Second operand 4 states. [2020-11-29 19:55:49,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:49,765 INFO L93 Difference]: Finished difference Result 501 states and 745 transitions. [2020-11-29 19:55:49,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:49,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-11-29 19:55:49,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:49,767 INFO L225 Difference]: With dead ends: 501 [2020-11-29 19:55:49,767 INFO L226 Difference]: Without dead ends: 266 [2020-11-29 19:55:49,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:49,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-11-29 19:55:49,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 254. [2020-11-29 19:55:49,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-11-29 19:55:49,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 374 transitions. [2020-11-29 19:55:49,773 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 374 transitions. Word has length 92 [2020-11-29 19:55:49,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:49,774 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 374 transitions. [2020-11-29 19:55:49,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:49,774 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 374 transitions. [2020-11-29 19:55:49,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-29 19:55:49,775 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:49,775 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-11-29 19:55:49,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-11-29 19:55:49,776 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:49,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:49,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1110599922, now seen corresponding path program 1 times [2020-11-29 19:55:49,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:49,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362942424] [2020-11-29 19:55:49,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:49,856 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:55:49,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362942424] [2020-11-29 19:55:49,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:49,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:49,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902215941] [2020-11-29 19:55:49,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:49,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:49,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:49,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:49,858 INFO L87 Difference]: Start difference. First operand 254 states and 374 transitions. Second operand 4 states. [2020-11-29 19:55:50,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:50,237 INFO L93 Difference]: Finished difference Result 524 states and 773 transitions. [2020-11-29 19:55:50,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:50,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2020-11-29 19:55:50,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:50,240 INFO L225 Difference]: With dead ends: 524 [2020-11-29 19:55:50,240 INFO L226 Difference]: Without dead ends: 289 [2020-11-29 19:55:50,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:55:50,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-11-29 19:55:50,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 254. [2020-11-29 19:55:50,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-11-29 19:55:50,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 373 transitions. [2020-11-29 19:55:50,248 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 373 transitions. Word has length 96 [2020-11-29 19:55:50,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:50,249 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 373 transitions. [2020-11-29 19:55:50,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:50,249 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 373 transitions. [2020-11-29 19:55:50,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-29 19:55:50,250 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:50,250 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-11-29 19:55:50,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-11-29 19:55:50,250 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:50,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:50,251 INFO L82 PathProgramCache]: Analyzing trace with hash 276185488, now seen corresponding path program 1 times [2020-11-29 19:55:50,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:50,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472167399] [2020-11-29 19:55:50,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:50,316 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-29 19:55:50,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472167399] [2020-11-29 19:55:50,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:50,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:55:50,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780624286] [2020-11-29 19:55:50,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:55:50,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:50,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:55:50,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:55:50,318 INFO L87 Difference]: Start difference. First operand 254 states and 373 transitions. Second operand 3 states. [2020-11-29 19:55:50,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:50,414 INFO L93 Difference]: Finished difference Result 719 states and 1071 transitions. [2020-11-29 19:55:50,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:55:50,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-11-29 19:55:50,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:50,417 INFO L225 Difference]: With dead ends: 719 [2020-11-29 19:55:50,417 INFO L226 Difference]: Without dead ends: 484 [2020-11-29 19:55:50,418 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 [2020-11-29 19:55:50,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-11-29 19:55:50,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2020-11-29 19:55:50,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-11-29 19:55:50,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 710 transitions. [2020-11-29 19:55:50,432 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 710 transitions. Word has length 96 [2020-11-29 19:55:50,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:50,432 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 710 transitions. [2020-11-29 19:55:50,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:55:50,433 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 710 transitions. [2020-11-29 19:55:50,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-29 19:55:50,434 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:50,434 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-11-29 19:55:50,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-11-29 19:55:50,435 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:50,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:50,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1537102738, now seen corresponding path program 1 times [2020-11-29 19:55:50,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:50,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224116630] [2020-11-29 19:55:50,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:50,482 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-11-29 19:55:50,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224116630] [2020-11-29 19:55:50,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:50,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:55:50,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346619982] [2020-11-29 19:55:50,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:55:50,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:50,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:55:50,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:55:50,484 INFO L87 Difference]: Start difference. First operand 484 states and 710 transitions. Second operand 3 states. [2020-11-29 19:55:50,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:50,549 INFO L93 Difference]: Finished difference Result 976 states and 1435 transitions. [2020-11-29 19:55:50,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:55:50,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-11-29 19:55:50,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:50,552 INFO L225 Difference]: With dead ends: 976 [2020-11-29 19:55:50,553 INFO L226 Difference]: Without dead ends: 511 [2020-11-29 19:55:50,553 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 [2020-11-29 19:55:50,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-11-29 19:55:50,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 511. [2020-11-29 19:55:50,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-11-29 19:55:50,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 745 transitions. [2020-11-29 19:55:50,569 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 745 transitions. Word has length 96 [2020-11-29 19:55:50,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:50,569 INFO L481 AbstractCegarLoop]: Abstraction has 511 states and 745 transitions. [2020-11-29 19:55:50,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:55:50,570 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 745 transitions. [2020-11-29 19:55:50,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-29 19:55:50,571 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:50,571 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-11-29 19:55:50,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-11-29 19:55:50,572 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:50,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:50,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1564168340, now seen corresponding path program 1 times [2020-11-29 19:55:50,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:50,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615509977] [2020-11-29 19:55:50,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:50,607 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-11-29 19:55:50,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615509977] [2020-11-29 19:55:50,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:50,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:55:50,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750939274] [2020-11-29 19:55:50,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:55:50,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:50,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:55:50,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:55:50,609 INFO L87 Difference]: Start difference. First operand 511 states and 745 transitions. Second operand 3 states. [2020-11-29 19:55:50,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:50,650 INFO L93 Difference]: Finished difference Result 1005 states and 1471 transitions. [2020-11-29 19:55:50,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:55:50,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-11-29 19:55:50,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:50,654 INFO L225 Difference]: With dead ends: 1005 [2020-11-29 19:55:50,654 INFO L226 Difference]: Without dead ends: 513 [2020-11-29 19:55:50,655 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 [2020-11-29 19:55:50,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-11-29 19:55:50,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 513. [2020-11-29 19:55:50,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-11-29 19:55:50,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 747 transitions. [2020-11-29 19:55:50,670 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 747 transitions. Word has length 96 [2020-11-29 19:55:50,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:50,671 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 747 transitions. [2020-11-29 19:55:50,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:55:50,671 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 747 transitions. [2020-11-29 19:55:50,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-29 19:55:50,672 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:50,673 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-11-29 19:55:50,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-11-29 19:55:50,673 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:50,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:50,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1173556134, now seen corresponding path program 1 times [2020-11-29 19:55:50,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:50,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969556277] [2020-11-29 19:55:50,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:50,727 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-11-29 19:55:50,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969556277] [2020-11-29 19:55:50,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:50,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:55:50,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208595174] [2020-11-29 19:55:50,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:55:50,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:50,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:55:50,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:55:50,730 INFO L87 Difference]: Start difference. First operand 513 states and 747 transitions. Second operand 3 states. [2020-11-29 19:55:50,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:50,823 INFO L93 Difference]: Finished difference Result 1240 states and 1821 transitions. [2020-11-29 19:55:50,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:55:50,824 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-11-29 19:55:50,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:50,828 INFO L225 Difference]: With dead ends: 1240 [2020-11-29 19:55:50,828 INFO L226 Difference]: Without dead ends: 748 [2020-11-29 19:55:50,829 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 [2020-11-29 19:55:50,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-11-29 19:55:50,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 746. [2020-11-29 19:55:50,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-11-29 19:55:50,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1095 transitions. [2020-11-29 19:55:50,852 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1095 transitions. Word has length 98 [2020-11-29 19:55:50,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:50,852 INFO L481 AbstractCegarLoop]: Abstraction has 746 states and 1095 transitions. [2020-11-29 19:55:50,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:55:50,853 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1095 transitions. [2020-11-29 19:55:50,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-11-29 19:55:50,854 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:50,854 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2020-11-29 19:55:50,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-11-29 19:55:50,855 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:50,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:50,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1825940577, now seen corresponding path program 1 times [2020-11-29 19:55:50,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:50,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779969587] [2020-11-29 19:55:50,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:50,930 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-11-29 19:55:50,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779969587] [2020-11-29 19:55:50,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:50,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:55:50,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959252047] [2020-11-29 19:55:50,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:55:50,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:50,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:55:50,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:55:50,933 INFO L87 Difference]: Start difference. First operand 746 states and 1095 transitions. Second operand 3 states. [2020-11-29 19:55:51,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:51,060 INFO L93 Difference]: Finished difference Result 1706 states and 2515 transitions. [2020-11-29 19:55:51,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:55:51,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-11-29 19:55:51,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:51,066 INFO L225 Difference]: With dead ends: 1706 [2020-11-29 19:55:51,066 INFO L226 Difference]: Without dead ends: 981 [2020-11-29 19:55:51,067 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 [2020-11-29 19:55:51,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2020-11-29 19:55:51,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 979. [2020-11-29 19:55:51,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 979 states. [2020-11-29 19:55:51,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1429 transitions. [2020-11-29 19:55:51,096 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1429 transitions. Word has length 105 [2020-11-29 19:55:51,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:51,097 INFO L481 AbstractCegarLoop]: Abstraction has 979 states and 1429 transitions. [2020-11-29 19:55:51,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:55:51,097 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1429 transitions. [2020-11-29 19:55:51,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-11-29 19:55:51,099 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:51,100 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:51,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-11-29 19:55:51,100 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:51,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:51,100 INFO L82 PathProgramCache]: Analyzing trace with hash 315775349, now seen corresponding path program 1 times [2020-11-29 19:55:51,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:51,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480821053] [2020-11-29 19:55:51,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:51,163 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-11-29 19:55:51,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480821053] [2020-11-29 19:55:51,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:51,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:55:51,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146061398] [2020-11-29 19:55:51,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:55:51,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:51,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:55:51,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:55:51,165 INFO L87 Difference]: Start difference. First operand 979 states and 1429 transitions. Second operand 3 states. [2020-11-29 19:55:51,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:51,250 INFO L93 Difference]: Finished difference Result 2170 states and 3182 transitions. [2020-11-29 19:55:51,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:55:51,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-11-29 19:55:51,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:51,258 INFO L225 Difference]: With dead ends: 2170 [2020-11-29 19:55:51,258 INFO L226 Difference]: Without dead ends: 1212 [2020-11-29 19:55:51,259 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 [2020-11-29 19:55:51,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2020-11-29 19:55:51,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1212. [2020-11-29 19:55:51,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1212 states. [2020-11-29 19:55:51,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1774 transitions. [2020-11-29 19:55:51,295 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1774 transitions. Word has length 122 [2020-11-29 19:55:51,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:51,295 INFO L481 AbstractCegarLoop]: Abstraction has 1212 states and 1774 transitions. [2020-11-29 19:55:51,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:55:51,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1774 transitions. [2020-11-29 19:55:51,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-11-29 19:55:51,298 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:51,298 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-11-29 19:55:51,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-11-29 19:55:51,298 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:51,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:51,299 INFO L82 PathProgramCache]: Analyzing trace with hash -799556719, now seen corresponding path program 1 times [2020-11-29 19:55:51,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:51,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837008622] [2020-11-29 19:55:51,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:55:51,422 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:55:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:55:51,584 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:55:51,683 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:55:51,684 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:55:51,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-11-29 19:55:51,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:55:51 BoogieIcfgContainer [2020-11-29 19:55:51,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:55:51,840 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:55:51,840 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:55:51,840 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:55:51,841 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:55:26" (3/4) ... [2020-11-29 19:55:51,843 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:55:51,844 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:55:51,845 INFO L168 Benchmark]: Toolchain (without parser) took 28673.98 ms. Allocated memory was 115.3 MB in the beginning and 297.8 MB in the end (delta: 182.5 MB). Free memory was 81.7 MB in the beginning and 226.3 MB in the end (delta: -144.6 MB). Peak memory consumption was 37.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:55:51,846 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 77.6 MB. Free memory was 37.5 MB in the beginning and 37.4 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:55:51,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 885.35 ms. Allocated memory is still 115.3 MB. Free memory was 81.7 MB in the beginning and 71.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:55:51,847 INFO L168 Benchmark]: Boogie Procedure Inliner took 139.80 ms. Allocated memory is still 115.3 MB. Free memory was 71.4 MB in the beginning and 66.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:55:51,847 INFO L168 Benchmark]: Boogie Preprocessor took 135.23 ms. Allocated memory is still 115.3 MB. Free memory was 66.5 MB in the beginning and 59.5 MB in the end (delta: 7.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:55:51,848 INFO L168 Benchmark]: RCFGBuilder took 2029.13 ms. Allocated memory was 115.3 MB in the beginning and 140.5 MB in the end (delta: 25.2 MB). Free memory was 59.5 MB in the beginning and 89.3 MB in the end (delta: -29.8 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:55:51,848 INFO L168 Benchmark]: TraceAbstraction took 25456.34 ms. Allocated memory was 140.5 MB in the beginning and 297.8 MB in the end (delta: 157.3 MB). Free memory was 88.4 MB in the beginning and 226.3 MB in the end (delta: -137.9 MB). Peak memory consumption was 128.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:55:51,848 INFO L168 Benchmark]: Witness Printer took 3.65 ms. Allocated memory is still 297.8 MB. Free memory is still 226.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:55:51,851 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 77.6 MB. Free memory was 37.5 MB in the beginning and 37.4 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 885.35 ms. Allocated memory is still 115.3 MB. Free memory was 81.7 MB in the beginning and 71.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 139.80 ms. Allocated memory is still 115.3 MB. Free memory was 71.4 MB in the beginning and 66.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 135.23 ms. Allocated memory is still 115.3 MB. Free memory was 66.5 MB in the beginning and 59.5 MB in the end (delta: 7.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2029.13 ms. Allocated memory was 115.3 MB in the beginning and 140.5 MB in the end (delta: 25.2 MB). Free memory was 59.5 MB in the beginning and 89.3 MB in the end (delta: -29.8 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 25456.34 ms. Allocated memory was 140.5 MB in the beginning and 297.8 MB in the end (delta: 157.3 MB). Free memory was 88.4 MB in the beginning and 226.3 MB in the end (delta: -137.9 MB). Peak memory consumption was 128.6 MB. Max. memory is 16.1 GB. * Witness Printer took 3.65 ms. Allocated memory is still 297.8 MB. Free memory is still 226.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 1446. Possible FailurePath: [L1044] static int init = 1; [L1045] static SSL_METHOD SSLv3_server_data ; VAL [init=1, SSLv3_server_data={6:0}] [L1067] SSL *s ; [L1068] int tmp ; [L1072] s = malloc(sizeof(SSL)) [L1073] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1074] s->ctx = malloc(sizeof(SSL_CTX)) [L1075] s->session = malloc(sizeof(SSL_SESSION)) [L1082] BUF_MEM *buf ; [L1083] unsigned long l ; [L1084] unsigned long Time ; [L1085] unsigned long tmp ; [L1086] void (*cb)() ; [L1087] long num1 ; [L1088] int ret ; [L1089] int new_state ; [L1090] int state ; [L1091] int skip ; [L1092] int got_new_session ; [L1093] int tmp___1 = __VERIFIER_nondet_int() ; [L1094] int tmp___2 = __VERIFIER_nondet_int() ; [L1095] int tmp___3 = __VERIFIER_nondet_int() ; [L1096] int tmp___4 = __VERIFIER_nondet_int() ; [L1097] int tmp___5 = __VERIFIER_nondet_int() ; [L1098] int tmp___6 = __VERIFIER_nondet_int() ; [L1099] int tmp___7 ; [L1100] long tmp___8 = __VERIFIER_nondet_long() ; [L1101] int tmp___9 = __VERIFIER_nondet_int() ; [L1102] int tmp___10 = __VERIFIER_nondet_int() ; [L1103] int blastFlag ; [L1107] s->state = 8464 [L1108] blastFlag = 0 [L1109] s->hit=__VERIFIER_nondet_int () [L1110] s->state = 8464 [L1111] tmp = __VERIFIER_nondet_int() [L1112] Time = tmp [L1113] cb = (void (*)())((void *)0) [L1114] ret = -1 [L1115] skip = 0 [L1116] got_new_session = 0 [L1117] EXPR s->info_callback VAL [init=1, SSLv3_server_data={6:0}] [L1117] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1118] EXPR s->info_callback [L1118] cb = s->info_callback [L1122] EXPR s->in_handshake [L1122] s->in_handshake += 1 [L1123] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_server_data={6:0}] [L1132] EXPR s->cert VAL [init=1, SSLv3_server_data={6:0}] [L1132] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1165] COND TRUE s->state == 8464 [L1325] s->shutdown = 0 [L1326] ret = __VERIFIER_nondet_int() [L1327] COND TRUE blastFlag == 0 [L1328] blastFlag = 1 VAL [init=1, SSLv3_server_data={6:0}] [L1332] COND FALSE !(ret <= 0) [L1337] got_new_session = 1 [L1338] s->state = 8496 [L1339] s->init_num = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1687] EXPR s->s3 [L1687] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1687] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1716] skip = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1174] COND TRUE s->state == 8496 [L1343] ret = __VERIFIER_nondet_int() [L1344] COND TRUE blastFlag == 1 [L1345] blastFlag = 2 VAL [init=1, SSLv3_server_data={6:0}] [L1349] COND FALSE !(ret <= 0) [L1354] s->hit VAL [init=1, SSLv3_server_data={6:0}] [L1354] COND FALSE !(s->hit) [L1357] s->state = 8512 VAL [init=1, SSLv3_server_data={6:0}] [L1359] s->init_num = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1687] EXPR s->s3 [L1687] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1687] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1716] skip = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1174] COND FALSE !(s->state == 8496) [L1177] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1177] COND FALSE !(s->state == 8497) [L1180] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1180] COND TRUE s->state == 8512 [L1363] EXPR s->s3 [L1363] EXPR (s->s3)->tmp.new_cipher [L1363] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_server_data={6:0}] [L1363] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1366] ret = __VERIFIER_nondet_int() [L1367] COND TRUE blastFlag == 2 [L1368] blastFlag = 6 VAL [init=1, SSLv3_server_data={6:0}] [L1372] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_server_data={6:0}] [L1378] s->state = 8528 [L1379] s->init_num = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1687] EXPR s->s3 [L1687] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1687] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1716] skip = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1174] COND FALSE !(s->state == 8496) [L1177] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1177] COND FALSE !(s->state == 8497) [L1180] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1180] COND FALSE !(s->state == 8512) [L1183] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1183] COND FALSE !(s->state == 8513) [L1186] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1186] COND TRUE s->state == 8528 [L1383] EXPR s->s3 [L1383] EXPR (s->s3)->tmp.new_cipher [L1383] EXPR ((s->s3)->tmp.new_cipher)->algorithms [L1383] l = ((s->s3)->tmp.new_cipher)->algorithms [L1384] EXPR s->options VAL [init=1, SSLv3_server_data={6:0}] [L1384] COND TRUE s->options & 2097152UL [L1385] EXPR s->s3 [L1385] (s->s3)->tmp.use_rsa_tmp = 1 [L1389] EXPR s->s3 [L1389] (s->s3)->tmp.use_rsa_tmp VAL [init=1, SSLv3_server_data={6:0}] [L1389] COND TRUE (s->s3)->tmp.use_rsa_tmp [L1407] ret = __VERIFIER_nondet_int() [L1408] COND TRUE blastFlag == 6 [L1409] blastFlag = 7 VAL [init=1, SSLv3_server_data={6:0}] [L1413] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_server_data={6:0}] [L1430] s->state = 8544 [L1431] s->init_num = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1687] EXPR s->s3 [L1687] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1687] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1716] skip = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1174] COND FALSE !(s->state == 8496) [L1177] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1177] COND FALSE !(s->state == 8497) [L1180] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1180] COND FALSE !(s->state == 8512) [L1183] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1183] COND FALSE !(s->state == 8513) [L1186] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1186] COND FALSE !(s->state == 8528) [L1189] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1189] COND FALSE !(s->state == 8529) [L1192] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1192] COND TRUE s->state == 8544 [L1435] EXPR s->verify_mode VAL [init=1, SSLv3_server_data={6:0}] [L1435] COND TRUE s->verify_mode & 1 [L1436] EXPR s->session [L1436] EXPR (s->session)->peer VAL [init=1, SSLv3_server_data={6:0}] [L1436] COND FALSE !((unsigned long )(s->session)->peer != (unsigned long )((void *)0)) [L1446] EXPR s->s3 [L1446] EXPR (s->s3)->tmp.new_cipher [L1446] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_server_data={6:0}] [L1446] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1456] EXPR s->s3 [L1456] (s->s3)->tmp.cert_request = 1 [L1457] ret = __VERIFIER_nondet_int() [L1458] COND TRUE blastFlag == 7 VAL [init=1, SSLv3_server_data={6:0}] [L3] __assert_fail("0", "s3_srvr.blast.11.i.cil-1.c", 3, "reach_error") VAL [init=1, SSLv3_server_data={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 149 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.2s, OverallIterations: 47, TraceHistogramMax: 5, AutomataDifference: 19.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9301 SDtfs, 2847 SDslu, 13200 SDs, 0 SdLazy, 7617 SolverSat, 406 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 252 GetRequests, 92 SyntacticMatches, 32 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1212occurred in iteration=46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 46 MinimizatonAttempts, 1099 StatesRemovedByMinimization, 42 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 3665 NumberOfCodeBlocks, 3665 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 3492 ConstructedInterpolants, 0 QuantifiedInterpolants, 799416 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 46 InterpolantComputations, 46 PerfectInterpolantSequences, 2126/2126 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:55:54,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:55:54,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:55:54,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:55:54,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:55:54,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:55:54,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:55:54,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:55:54,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:55:54,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:55:54,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:55:54,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:55:54,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:55:54,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:55:54,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:55:54,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:55:54,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:55:54,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:55:54,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:55:54,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:55:54,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:55:54,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:55:54,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:55:54,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:55:54,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:55:54,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:55:54,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:55:54,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:55:54,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:55:54,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:55:54,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:55:54,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:55:54,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:55:54,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:55:54,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:55:54,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:55:54,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:55:54,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:55:54,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:55:54,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:55:54,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:55:54,399 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 19:55:54,422 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:55:54,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:55:54,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:55:54,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:55:54,425 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:55:54,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:55:54,425 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:55:54,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:55:54,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:55:54,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:55:54,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:55:54,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:55:54,427 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 19:55:54,427 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 19:55:54,428 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:55:54,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:55:54,428 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:55:54,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:55:54,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:55:54,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:55:54,429 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:55:54,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:55:54,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:55:54,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:55:54,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:55:54,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:55:54,431 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 19:55:54,431 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 19:55:54,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:55:54,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:55:54,432 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 19:55:54,432 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_48f5c6d5-6825-48fd-a184-d41786844331/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70c3bc063fdec0bf22217db797a4f26edc24e29e [2020-11-29 19:55:54,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:55:54,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:55:54,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:55:54,826 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:55:54,827 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:55:54,828 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/../../sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-1.c [2020-11-29 19:55:54,890 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/data/1ad6bca7f/289eb5be53f64679a34dd3142072639e/FLAG91b2ceca5 [2020-11-29 19:55:55,598 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:55:55,598 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-1.c [2020-11-29 19:55:55,629 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/data/1ad6bca7f/289eb5be53f64679a34dd3142072639e/FLAG91b2ceca5 [2020-11-29 19:55:55,745 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/data/1ad6bca7f/289eb5be53f64679a34dd3142072639e [2020-11-29 19:55:55,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:55:55,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:55:55,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:55:55,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:55:55,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:55:55,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:55:55" (1/1) ... [2020-11-29 19:55:55,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac72651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:55, skipping insertion in model container [2020-11-29 19:55:55,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:55:55" (1/1) ... [2020-11-29 19:55:55,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:55:55,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:55:56,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:55:56,373 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:55:56,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:55:56,561 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:55:56,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:56 WrapperNode [2020-11-29 19:55:56,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:55:56,563 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:55:56,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:55:56,563 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:55:56,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:56" (1/1) ... [2020-11-29 19:55:56,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:56" (1/1) ... [2020-11-29 19:55:56,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:55:56,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:55:56,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:55:56,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:55:56,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:56" (1/1) ... [2020-11-29 19:55:56,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:56" (1/1) ... [2020-11-29 19:55:56,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:56" (1/1) ... [2020-11-29 19:55:56,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:56" (1/1) ... [2020-11-29 19:55:56,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:56" (1/1) ... [2020-11-29 19:55:56,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:56" (1/1) ... [2020-11-29 19:55:56,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:56" (1/1) ... [2020-11-29 19:55:56,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:55:56,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:55:56,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:55:56,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:55:56,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/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 [2020-11-29 19:55:56,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 19:55:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 19:55:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:55:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 19:55:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 19:55:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 19:55:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:55:56,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:55:56,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 19:55:57,169 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 19:56:00,897 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-11-29 19:56:00,897 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-11-29 19:56:00,906 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:56:00,906 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 19:56:00,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:56:00 BoogieIcfgContainer [2020-11-29 19:56:00,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:56:00,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:56:00,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:56:00,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:56:00,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:55:55" (1/3) ... [2020-11-29 19:56:00,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe573d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:56:00, skipping insertion in model container [2020-11-29 19:56:00,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:56" (2/3) ... [2020-11-29 19:56:00,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe573d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:56:00, skipping insertion in model container [2020-11-29 19:56:00,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:56:00" (3/3) ... [2020-11-29 19:56:00,918 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.11.i.cil-1.c [2020-11-29 19:56:00,930 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:56:00,934 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:56:00,946 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:56:00,979 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:56:00,980 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:56:00,980 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:56:00,980 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:56:00,980 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:56:00,980 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:56:00,980 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:56:00,981 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:56:01,009 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2020-11-29 19:56:01,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-29 19:56:01,022 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:01,022 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] [2020-11-29 19:56:01,023 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:01,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:01,027 INFO L82 PathProgramCache]: Analyzing trace with hash -2031756972, now seen corresponding path program 1 times [2020-11-29 19:56:01,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:56:01,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460435438] [2020-11-29 19:56:01,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-29 19:56:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:01,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:56:01,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:56:01,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:01,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:56:01,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:01,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460435438] [2020-11-29 19:56:01,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:56:01,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-29 19:56:01,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421530358] [2020-11-29 19:56:01,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:56:01,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:56:01,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:56:01,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:56:01,425 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 4 states. [2020-11-29 19:56:01,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:01,712 INFO L93 Difference]: Finished difference Result 562 states and 958 transitions. [2020-11-29 19:56:01,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:56:01,715 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-11-29 19:56:01,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:01,737 INFO L225 Difference]: With dead ends: 562 [2020-11-29 19:56:01,738 INFO L226 Difference]: Without dead ends: 382 [2020-11-29 19:56:01,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:56:01,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-11-29 19:56:01,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 380. [2020-11-29 19:56:01,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-11-29 19:56:01,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 579 transitions. [2020-11-29 19:56:01,842 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 579 transitions. Word has length 35 [2020-11-29 19:56:01,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:01,843 INFO L481 AbstractCegarLoop]: Abstraction has 380 states and 579 transitions. [2020-11-29 19:56:01,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:56:01,843 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 579 transitions. [2020-11-29 19:56:01,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-29 19:56:01,848 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:01,848 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:56:02,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 19:56:02,066 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:02,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:02,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1192573563, now seen corresponding path program 1 times [2020-11-29 19:56:02,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:56:02,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509625571] [2020-11-29 19:56:02,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-29 19:56:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:02,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:56:02,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:56:02,397 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:02,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:56:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:02,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509625571] [2020-11-29 19:56:02,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:56:02,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-29 19:56:02,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976362702] [2020-11-29 19:56:02,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:56:02,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:56:02,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:56:02,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:56:02,430 INFO L87 Difference]: Start difference. First operand 380 states and 579 transitions. Second operand 4 states. [2020-11-29 19:56:02,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:02,985 INFO L93 Difference]: Finished difference Result 876 states and 1345 transitions. [2020-11-29 19:56:02,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:56:02,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-11-29 19:56:02,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:02,991 INFO L225 Difference]: With dead ends: 876 [2020-11-29 19:56:02,991 INFO L226 Difference]: Without dead ends: 628 [2020-11-29 19:56:02,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:56:02,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-11-29 19:56:03,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 626. [2020-11-29 19:56:03,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2020-11-29 19:56:03,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 950 transitions. [2020-11-29 19:56:03,084 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 950 transitions. Word has length 59 [2020-11-29 19:56:03,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:03,088 INFO L481 AbstractCegarLoop]: Abstraction has 626 states and 950 transitions. [2020-11-29 19:56:03,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:56:03,088 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 950 transitions. [2020-11-29 19:56:03,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-29 19:56:03,098 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:03,100 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:56:03,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 19:56:03,324 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:03,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:03,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1680839393, now seen corresponding path program 1 times [2020-11-29 19:56:03,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:56:03,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050671194] [2020-11-29 19:56:03,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-29 19:56:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:03,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:56:03,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:56:03,664 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:56:03,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:56:03,704 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:56:03,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050671194] [2020-11-29 19:56:03,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:56:03,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-29 19:56:03,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431042647] [2020-11-29 19:56:03,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:56:03,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:56:03,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:56:03,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:56:03,710 INFO L87 Difference]: Start difference. First operand 626 states and 950 transitions. Second operand 4 states. [2020-11-29 19:56:04,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:04,584 INFO L93 Difference]: Finished difference Result 1366 states and 2085 transitions. [2020-11-29 19:56:04,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:56:04,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-11-29 19:56:04,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:04,590 INFO L225 Difference]: With dead ends: 1366 [2020-11-29 19:56:04,591 INFO L226 Difference]: Without dead ends: 872 [2020-11-29 19:56:04,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:56:04,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2020-11-29 19:56:04,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2020-11-29 19:56:04,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2020-11-29 19:56:04,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1320 transitions. [2020-11-29 19:56:04,644 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1320 transitions. Word has length 103 [2020-11-29 19:56:04,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:04,646 INFO L481 AbstractCegarLoop]: Abstraction has 872 states and 1320 transitions. [2020-11-29 19:56:04,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:56:04,646 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1320 transitions. [2020-11-29 19:56:04,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-11-29 19:56:04,652 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:04,653 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-11-29 19:56:04,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 19:56:04,873 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:04,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:04,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1159018067, now seen corresponding path program 1 times [2020-11-29 19:56:04,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:56:04,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734606248] [2020-11-29 19:56:04,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-29 19:56:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:05,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:56:05,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:56:05,307 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-29 19:56:05,307 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:56:05,312 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:56:05,312 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:56:05,312 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-11-29 19:56:05,404 INFO L350 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-11-29 19:56:05,404 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2020-11-29 19:56:05,405 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:56:05,421 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:56:05,421 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:56:05,422 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:19 [2020-11-29 19:56:05,456 INFO L350 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-11-29 19:56:05,456 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 12 [2020-11-29 19:56:05,458 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:56:05,461 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:56:05,461 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:56:05,462 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:5 [2020-11-29 19:56:05,521 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-11-29 19:56:05,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:56:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-11-29 19:56:05,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734606248] [2020-11-29 19:56:05,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:56:05,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2020-11-29 19:56:05,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952585859] [2020-11-29 19:56:05,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:56:05,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:56:05,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:56:05,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:56:05,617 INFO L87 Difference]: Start difference. First operand 872 states and 1320 transitions. Second operand 7 states. [2020-11-29 19:56:16,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:16,759 INFO L93 Difference]: Finished difference Result 3288 states and 4998 transitions. [2020-11-29 19:56:16,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 19:56:16,761 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-11-29 19:56:16,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:16,779 INFO L225 Difference]: With dead ends: 3288 [2020-11-29 19:56:16,779 INFO L226 Difference]: Without dead ends: 2424 [2020-11-29 19:56:16,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:56:16,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2020-11-29 19:56:16,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 1046. [2020-11-29 19:56:16,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-11-29 19:56:16,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1620 transitions. [2020-11-29 19:56:16,843 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1620 transitions. Word has length 127 [2020-11-29 19:56:16,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:16,844 INFO L481 AbstractCegarLoop]: Abstraction has 1046 states and 1620 transitions. [2020-11-29 19:56:16,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:56:16,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1620 transitions. [2020-11-29 19:56:16,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-11-29 19:56:16,853 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:16,853 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-11-29 19:56:17,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 19:56:17,070 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:17,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:17,071 INFO L82 PathProgramCache]: Analyzing trace with hash -799556719, now seen corresponding path program 1 times [2020-11-29 19:56:17,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:56:17,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530089105] [2020-11-29 19:56:17,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-29 19:56:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:56:17,583 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:56:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:56:18,045 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:56:18,432 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 19:56:18,433 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:56:18,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-29 19:56:18,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:56:18 BoogieIcfgContainer [2020-11-29 19:56:18,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:56:18,835 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:56:18,836 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:56:18,836 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:56:18,836 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:56:00" (3/4) ... [2020-11-29 19:56:18,838 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:56:18,959 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_48f5c6d5-6825-48fd-a184-d41786844331/bin/uautomizer/witness.graphml [2020-11-29 19:56:18,959 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:56:18,961 INFO L168 Benchmark]: Toolchain (without parser) took 23210.01 ms. Allocated memory was 54.5 MB in the beginning and 123.7 MB in the end (delta: 69.2 MB). Free memory was 30.8 MB in the beginning and 75.7 MB in the end (delta: -44.9 MB). Peak memory consumption was 75.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:56:18,961 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 54.5 MB. Free memory was 36.5 MB in the beginning and 36.5 MB in the end (delta: 25.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:56:18,962 INFO L168 Benchmark]: CACSL2BoogieTranslator took 809.80 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 30.6 MB in the beginning and 46.4 MB in the end (delta: -15.8 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:56:18,962 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.79 ms. Allocated memory is still 73.4 MB. Free memory was 46.4 MB in the beginning and 42.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:56:18,962 INFO L168 Benchmark]: Boogie Preprocessor took 86.26 ms. Allocated memory is still 73.4 MB. Free memory was 41.8 MB in the beginning and 34.9 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:56:18,963 INFO L168 Benchmark]: RCFGBuilder took 4180.38 ms. Allocated memory was 73.4 MB in the beginning and 102.8 MB in the end (delta: 29.4 MB). Free memory was 34.9 MB in the beginning and 50.3 MB in the end (delta: -15.4 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:56:18,963 INFO L168 Benchmark]: TraceAbstraction took 17923.54 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 50.0 MB in the beginning and 28.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 42.7 MB. Max. memory is 16.1 GB. [2020-11-29 19:56:18,964 INFO L168 Benchmark]: Witness Printer took 124.26 ms. Allocated memory is still 123.7 MB. Free memory was 28.2 MB in the beginning and 75.7 MB in the end (delta: -47.5 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. [2020-11-29 19:56:18,966 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 54.5 MB. Free memory was 36.5 MB in the beginning and 36.5 MB in the end (delta: 25.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 809.80 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 30.6 MB in the beginning and 46.4 MB in the end (delta: -15.8 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.79 ms. Allocated memory is still 73.4 MB. Free memory was 46.4 MB in the beginning and 42.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 86.26 ms. Allocated memory is still 73.4 MB. Free memory was 41.8 MB in the beginning and 34.9 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4180.38 ms. Allocated memory was 73.4 MB in the beginning and 102.8 MB in the end (delta: 29.4 MB). Free memory was 34.9 MB in the beginning and 50.3 MB in the end (delta: -15.4 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17923.54 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 50.0 MB in the beginning and 28.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 42.7 MB. Max. memory is 16.1 GB. * Witness Printer took 124.26 ms. Allocated memory is still 123.7 MB. Free memory was 28.2 MB in the beginning and 75.7 MB in the end (delta: -47.5 MB). Peak memory consumption was 2.9 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: [L1044] static int init = 1; [L1045] static SSL_METHOD SSLv3_server_data ; VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1067] SSL *s ; [L1068] int tmp ; [L1072] s = malloc(sizeof(SSL)) [L1073] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1074] s->ctx = malloc(sizeof(SSL_CTX)) [L1075] s->session = malloc(sizeof(SSL_SESSION)) [L1082] BUF_MEM *buf ; [L1083] unsigned long l ; [L1084] unsigned long Time ; [L1085] unsigned long tmp ; [L1086] void (*cb)() ; [L1087] long num1 ; [L1088] int ret ; [L1089] int new_state ; [L1090] int state ; [L1091] int skip ; [L1092] int got_new_session ; [L1093] int tmp___1 = __VERIFIER_nondet_int() ; [L1094] int tmp___2 = __VERIFIER_nondet_int() ; [L1095] int tmp___3 = __VERIFIER_nondet_int() ; [L1096] int tmp___4 = __VERIFIER_nondet_int() ; [L1097] int tmp___5 = __VERIFIER_nondet_int() ; [L1098] int tmp___6 = __VERIFIER_nondet_int() ; [L1099] int tmp___7 ; [L1100] long tmp___8 = __VERIFIER_nondet_long() ; [L1101] int tmp___9 = __VERIFIER_nondet_int() ; [L1102] int tmp___10 = __VERIFIER_nondet_int() ; [L1103] int blastFlag ; [L1107] s->state = 8464 [L1108] blastFlag = 0 [L1109] s->hit=__VERIFIER_nondet_int () [L1110] s->state = 8464 [L1111] tmp = __VERIFIER_nondet_int() [L1112] Time = tmp [L1113] cb = (void (*)())((void *)0) [L1114] ret = -1 [L1115] skip = 0 [L1116] got_new_session = 0 [L1117] EXPR s->info_callback VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1117] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1118] EXPR s->info_callback [L1118] cb = s->info_callback [L1122] EXPR s->in_handshake [L1122] s->in_handshake += 1 [L1123] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1132] EXPR s->cert VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1132] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1165] COND TRUE s->state == 8464 [L1325] s->shutdown = 0 [L1326] ret = __VERIFIER_nondet_int() [L1327] COND TRUE blastFlag == 0 [L1328] blastFlag = 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1332] COND FALSE !(ret <= 0) [L1337] got_new_session = 1 [L1338] s->state = 8496 [L1339] s->init_num = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1687] EXPR s->s3 [L1687] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1687] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1716] skip = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1174] COND TRUE s->state == 8496 [L1343] ret = __VERIFIER_nondet_int() [L1344] COND TRUE blastFlag == 1 [L1345] blastFlag = 2 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1349] COND FALSE !(ret <= 0) [L1354] s->hit VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1354] COND FALSE !(s->hit) [L1357] s->state = 8512 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1359] s->init_num = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1687] EXPR s->s3 [L1687] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1687] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1716] skip = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1174] COND FALSE !(s->state == 8496) [L1177] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1177] COND FALSE !(s->state == 8497) [L1180] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1180] COND TRUE s->state == 8512 [L1363] EXPR s->s3 [L1363] EXPR (s->s3)->tmp.new_cipher [L1363] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1363] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1366] ret = __VERIFIER_nondet_int() [L1367] COND TRUE blastFlag == 2 [L1368] blastFlag = 6 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1372] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1378] s->state = 8528 [L1379] s->init_num = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1687] EXPR s->s3 [L1687] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1687] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1716] skip = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1174] COND FALSE !(s->state == 8496) [L1177] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1177] COND FALSE !(s->state == 8497) [L1180] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1180] COND FALSE !(s->state == 8512) [L1183] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1183] COND FALSE !(s->state == 8513) [L1186] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1186] COND TRUE s->state == 8528 [L1383] EXPR s->s3 [L1383] EXPR (s->s3)->tmp.new_cipher [L1383] EXPR ((s->s3)->tmp.new_cipher)->algorithms [L1383] l = ((s->s3)->tmp.new_cipher)->algorithms [L1384] EXPR s->options VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1384] COND TRUE s->options & 2097152UL [L1385] EXPR s->s3 [L1385] (s->s3)->tmp.use_rsa_tmp = 1 [L1389] EXPR s->s3 [L1389] (s->s3)->tmp.use_rsa_tmp VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1389] COND TRUE (s->s3)->tmp.use_rsa_tmp [L1407] ret = __VERIFIER_nondet_int() [L1408] COND TRUE blastFlag == 6 [L1409] blastFlag = 7 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1413] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1430] s->state = 8544 [L1431] s->init_num = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1687] EXPR s->s3 [L1687] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1687] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1716] skip = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1174] COND FALSE !(s->state == 8496) [L1177] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1177] COND FALSE !(s->state == 8497) [L1180] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1180] COND FALSE !(s->state == 8512) [L1183] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1183] COND FALSE !(s->state == 8513) [L1186] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1186] COND FALSE !(s->state == 8528) [L1189] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1189] COND FALSE !(s->state == 8529) [L1192] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1192] COND TRUE s->state == 8544 [L1435] EXPR s->verify_mode VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1435] COND TRUE s->verify_mode & 1 [L1436] EXPR s->session [L1436] EXPR (s->session)->peer VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1436] COND FALSE !((unsigned long )(s->session)->peer != (unsigned long )((void *)0)) [L1446] EXPR s->s3 [L1446] EXPR (s->s3)->tmp.new_cipher [L1446] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1446] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1456] EXPR s->s3 [L1456] (s->s3)->tmp.cert_request = 1 [L1457] ret = __VERIFIER_nondet_int() [L1458] COND TRUE blastFlag == 7 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L3] __assert_fail("0", "s3_srvr.blast.11.i.cil-1.c", 3, "reach_error") VAL [init=1, SSLv3_server_data={-2147483617:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 149 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.6s, OverallIterations: 5, TraceHistogramMax: 5, AutomataDifference: 12.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1143 SDtfs, 1401 SDslu, 1742 SDs, 0 SdLazy, 887 SolverSat, 152 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 642 GetRequests, 628 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1046occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 1382 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 451 NumberOfCodeBlocks, 451 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 640 ConstructedInterpolants, 0 QuantifiedInterpolants, 190428 SizeOfPredicates, 5 NumberOfNonLiveVariables, 929 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 506/506 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...