./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/triangular-longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f6fb2bb1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/triangular-longer-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85b94be996486a7516ccc33e88e36127bb614ed5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-f6fb2bb [2019-11-19 19:06:49,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 19:06:49,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 19:06:49,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 19:06:49,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 19:06:49,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 19:06:49,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 19:06:49,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 19:06:49,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 19:06:49,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 19:06:49,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 19:06:49,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 19:06:49,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 19:06:50,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 19:06:50,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 19:06:50,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 19:06:50,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 19:06:50,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 19:06:50,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 19:06:50,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 19:06:50,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 19:06:50,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 19:06:50,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 19:06:50,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 19:06:50,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 19:06:50,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 19:06:50,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 19:06:50,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 19:06:50,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 19:06:50,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 19:06:50,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 19:06:50,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 19:06:50,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 19:06:50,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 19:06:50,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 19:06:50,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 19:06:50,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 19:06:50,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 19:06:50,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 19:06:50,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 19:06:50,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 19:06:50,030 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 19:06:50,048 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 19:06:50,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 19:06:50,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 19:06:50,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 19:06:50,052 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 19:06:50,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 19:06:50,053 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 19:06:50,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 19:06:50,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 19:06:50,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 19:06:50,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 19:06:50,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 19:06:50,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 19:06:50,056 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 19:06:50,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 19:06:50,057 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 19:06:50,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 19:06:50,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 19:06:50,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 19:06:50,058 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 19:06:50,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 19:06:50,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 19:06:50,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 19:06:50,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 19:06:50,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 19:06:50,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 19:06:50,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 19:06:50,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 19:06:50,061 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85b94be996486a7516ccc33e88e36127bb614ed5 [2019-11-19 19:06:50,378 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 19:06:50,397 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 19:06:50,402 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 19:06:50,404 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 19:06:50,404 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 19:06:50,406 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longer-2.i [2019-11-19 19:06:50,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/386d94d57/2dde5e783a6c45d0bab941a45d378e42/FLAG29775ce89 [2019-11-19 19:06:51,082 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 19:06:51,086 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-2.i [2019-11-19 19:06:51,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/386d94d57/2dde5e783a6c45d0bab941a45d378e42/FLAG29775ce89 [2019-11-19 19:06:51,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/386d94d57/2dde5e783a6c45d0bab941a45d378e42 [2019-11-19 19:06:51,347 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 19:06:51,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 19:06:51,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 19:06:51,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 19:06:51,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 19:06:51,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:06:51" (1/1) ... [2019-11-19 19:06:51,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ef89412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:51, skipping insertion in model container [2019-11-19 19:06:51,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:06:51" (1/1) ... [2019-11-19 19:06:51,370 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 19:06:51,436 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 19:06:51,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 19:06:51,947 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 19:06:52,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 19:06:52,107 INFO L192 MainTranslator]: Completed translation [2019-11-19 19:06:52,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:52 WrapperNode [2019-11-19 19:06:52,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 19:06:52,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 19:06:52,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 19:06:52,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 19:06:52,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:52" (1/1) ... [2019-11-19 19:06:52,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:52" (1/1) ... [2019-11-19 19:06:52,178 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 19:06:52,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 19:06:52,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 19:06:52,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 19:06:52,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:52" (1/1) ... [2019-11-19 19:06:52,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:52" (1/1) ... [2019-11-19 19:06:52,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:52" (1/1) ... [2019-11-19 19:06:52,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:52" (1/1) ... [2019-11-19 19:06:52,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:52" (1/1) ... [2019-11-19 19:06:52,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:52" (1/1) ... [2019-11-19 19:06:52,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:52" (1/1) ... [2019-11-19 19:06:52,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 19:06:52,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 19:06:52,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 19:06:52,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 19:06:52,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 19:06:52,260 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2019-11-19 19:06:52,261 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2019-11-19 19:06:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2019-11-19 19:06:52,261 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2019-11-19 19:06:52,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-19 19:06:52,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-19 19:06:52,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 19:06:52,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 19:06:52,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-19 19:06:52,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 19:06:52,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 19:06:52,265 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-19 19:06:52,629 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 19:06:52,629 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-19 19:06:52,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:06:52 BoogieIcfgContainer [2019-11-19 19:06:52,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 19:06:52,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 19:06:52,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 19:06:52,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 19:06:52,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:06:51" (1/3) ... [2019-11-19 19:06:52,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6486728e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:06:52, skipping insertion in model container [2019-11-19 19:06:52,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:52" (2/3) ... [2019-11-19 19:06:52,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6486728e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:06:52, skipping insertion in model container [2019-11-19 19:06:52,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:06:52" (3/3) ... [2019-11-19 19:06:52,639 INFO L109 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2019-11-19 19:06:52,698 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,699 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,699 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,700 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,700 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork3_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,701 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork3_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,701 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork3_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,702 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,702 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,702 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork3_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,702 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork3_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,703 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork3_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,703 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork3_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,703 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork3_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,704 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,704 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,704 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,705 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,705 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,705 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,706 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,706 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,706 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,707 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,707 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,707 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,707 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,708 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,708 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork5_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,709 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork5_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,709 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,709 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,709 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork5_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,710 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork5_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,710 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork5_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,710 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,710 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,711 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork5_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,711 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork5_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,711 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork5_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,712 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork5_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,712 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork5_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,712 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,713 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,713 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,713 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,713 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,714 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,714 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,714 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,715 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,715 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,715 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,716 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,716 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,716 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,716 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork4_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,717 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork4_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,717 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,717 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,717 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork4_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,718 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork4_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,718 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork4_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,718 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,719 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,719 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork4_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,719 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork4_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,719 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork4_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,720 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork4_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,720 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork4_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,720 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,721 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,721 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,721 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,721 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,722 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,722 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,722 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,722 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,723 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,723 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,723 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,724 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,724 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:52,744 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-19 19:06:52,745 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 19:06:52,752 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 19:06:52,762 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 19:06:52,779 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 19:06:52,779 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 19:06:52,780 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 19:06:52,780 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 19:06:52,780 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 19:06:52,780 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 19:06:52,780 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 19:06:52,781 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 19:06:52,792 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 94 places, 92 transitions [2019-11-19 19:06:53,643 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8842 states. [2019-11-19 19:06:53,646 INFO L276 IsEmpty]: Start isEmpty. Operand 8842 states. [2019-11-19 19:06:53,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-19 19:06:53,668 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:06:53,672 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:06:53,672 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:06:53,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:06:53,680 INFO L82 PathProgramCache]: Analyzing trace with hash 540358685, now seen corresponding path program 1 times [2019-11-19 19:06:53,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:06:53,690 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457642466] [2019-11-19 19:06:53,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:06:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:06:54,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:06:54,107 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457642466] [2019-11-19 19:06:54,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 19:06:54,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-19 19:06:54,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601209193] [2019-11-19 19:06:54,115 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 19:06:54,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:06:54,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 19:06:54,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-19 19:06:54,134 INFO L87 Difference]: Start difference. First operand 8842 states. Second operand 5 states. [2019-11-19 19:06:54,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:06:54,544 INFO L93 Difference]: Finished difference Result 15655 states and 45633 transitions. [2019-11-19 19:06:54,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-19 19:06:54,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-11-19 19:06:54,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:06:54,600 INFO L225 Difference]: With dead ends: 15655 [2019-11-19 19:06:54,601 INFO L226 Difference]: Without dead ends: 4153 [2019-11-19 19:06:54,603 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-19 19:06:54,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4153 states. [2019-11-19 19:06:54,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4153 to 3145. [2019-11-19 19:06:54,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3145 states. [2019-11-19 19:06:54,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 8436 transitions. [2019-11-19 19:06:54,943 INFO L78 Accepts]: Start accepts. Automaton has 3145 states and 8436 transitions. Word has length 19 [2019-11-19 19:06:54,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:06:54,945 INFO L462 AbstractCegarLoop]: Abstraction has 3145 states and 8436 transitions. [2019-11-19 19:06:54,945 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 19:06:54,946 INFO L276 IsEmpty]: Start isEmpty. Operand 3145 states and 8436 transitions. [2019-11-19 19:06:54,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-19 19:06:54,950 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:06:54,950 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:06:54,951 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:06:54,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:06:54,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1854409425, now seen corresponding path program 1 times [2019-11-19 19:06:54,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:06:54,952 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258008777] [2019-11-19 19:06:54,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:06:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:06:55,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:06:55,132 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258008777] [2019-11-19 19:06:55,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 19:06:55,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-19 19:06:55,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232603181] [2019-11-19 19:06:55,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 19:06:55,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:06:55,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 19:06:55,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-19 19:06:55,136 INFO L87 Difference]: Start difference. First operand 3145 states and 8436 transitions. Second operand 5 states. [2019-11-19 19:06:55,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:06:55,270 INFO L93 Difference]: Finished difference Result 3838 states and 9822 transitions. [2019-11-19 19:06:55,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 19:06:55,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-19 19:06:55,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:06:55,290 INFO L225 Difference]: With dead ends: 3838 [2019-11-19 19:06:55,290 INFO L226 Difference]: Without dead ends: 2722 [2019-11-19 19:06:55,291 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-19 19:06:55,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2722 states. [2019-11-19 19:06:55,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2722 to 2614. [2019-11-19 19:06:55,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2614 states. [2019-11-19 19:06:55,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2614 states to 2614 states and 6978 transitions. [2019-11-19 19:06:55,397 INFO L78 Accepts]: Start accepts. Automaton has 2614 states and 6978 transitions. Word has length 22 [2019-11-19 19:06:55,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:06:55,398 INFO L462 AbstractCegarLoop]: Abstraction has 2614 states and 6978 transitions. [2019-11-19 19:06:55,398 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 19:06:55,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2614 states and 6978 transitions. [2019-11-19 19:06:55,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-19 19:06:55,401 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:06:55,402 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:06:55,402 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:06:55,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:06:55,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1262760165, now seen corresponding path program 1 times [2019-11-19 19:06:55,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:06:55,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355862839] [2019-11-19 19:06:55,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:06:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:06:55,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:06:55,563 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355862839] [2019-11-19 19:06:55,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 19:06:55,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-19 19:06:55,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477793059] [2019-11-19 19:06:55,566 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 19:06:55,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:06:55,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 19:06:55,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 19:06:55,566 INFO L87 Difference]: Start difference. First operand 2614 states and 6978 transitions. Second operand 5 states. [2019-11-19 19:06:55,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:06:55,769 INFO L93 Difference]: Finished difference Result 4297 states and 10785 transitions. [2019-11-19 19:06:55,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-19 19:06:55,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-19 19:06:55,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:06:55,786 INFO L225 Difference]: With dead ends: 4297 [2019-11-19 19:06:55,786 INFO L226 Difference]: Without dead ends: 2470 [2019-11-19 19:06:55,787 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-19 19:06:55,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2019-11-19 19:06:55,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2371. [2019-11-19 19:06:55,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2371 states. [2019-11-19 19:06:55,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 6090 transitions. [2019-11-19 19:06:55,866 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 6090 transitions. Word has length 22 [2019-11-19 19:06:55,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:06:55,866 INFO L462 AbstractCegarLoop]: Abstraction has 2371 states and 6090 transitions. [2019-11-19 19:06:55,867 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 19:06:55,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 6090 transitions. [2019-11-19 19:06:55,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-19 19:06:55,869 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:06:55,869 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:06:55,870 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:06:55,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:06:55,870 INFO L82 PathProgramCache]: Analyzing trace with hash -478547535, now seen corresponding path program 1 times [2019-11-19 19:06:55,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:06:55,871 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060864815] [2019-11-19 19:06:55,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:06:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:06:55,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:06:55,977 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060864815] [2019-11-19 19:06:55,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 19:06:55,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-19 19:06:55,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442052749] [2019-11-19 19:06:55,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-19 19:06:55,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:06:55,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 19:06:55,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-19 19:06:55,981 INFO L87 Difference]: Start difference. First operand 2371 states and 6090 transitions. Second operand 6 states. [2019-11-19 19:06:56,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:06:56,197 INFO L93 Difference]: Finished difference Result 3793 states and 9381 transitions. [2019-11-19 19:06:56,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-19 19:06:56,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-11-19 19:06:56,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:06:56,215 INFO L225 Difference]: With dead ends: 3793 [2019-11-19 19:06:56,215 INFO L226 Difference]: Without dead ends: 2641 [2019-11-19 19:06:56,217 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-19 19:06:56,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2019-11-19 19:06:56,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 2641. [2019-11-19 19:06:56,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2641 states. [2019-11-19 19:06:56,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2641 states to 2641 states and 6636 transitions. [2019-11-19 19:06:56,318 INFO L78 Accepts]: Start accepts. Automaton has 2641 states and 6636 transitions. Word has length 25 [2019-11-19 19:06:56,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:06:56,319 INFO L462 AbstractCegarLoop]: Abstraction has 2641 states and 6636 transitions. [2019-11-19 19:06:56,319 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-19 19:06:56,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2641 states and 6636 transitions. [2019-11-19 19:06:56,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-19 19:06:56,322 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:06:56,323 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-19 19:06:56,323 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:06:56,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:06:56,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1835806212, now seen corresponding path program 1 times [2019-11-19 19:06:56,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:06:56,324 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983058206] [2019-11-19 19:06:56,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:06:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:06:56,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:06:56,480 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983058206] [2019-11-19 19:06:56,481 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579332722] [2019-11-19 19:06:56,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:06:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:06:56,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-19 19:06:56,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:06:56,662 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:06:56,664 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:06:56,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:06:56,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:06:56,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-11-19 19:06:56,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146579089] [2019-11-19 19:06:56,681 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-19 19:06:56,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:06:56,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-19 19:06:56,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-19 19:06:56,683 INFO L87 Difference]: Start difference. First operand 2641 states and 6636 transitions. Second operand 8 states. [2019-11-19 19:06:57,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:06:57,007 INFO L93 Difference]: Finished difference Result 4846 states and 11928 transitions. [2019-11-19 19:06:57,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-19 19:06:57,008 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2019-11-19 19:06:57,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:06:57,033 INFO L225 Difference]: With dead ends: 4846 [2019-11-19 19:06:57,033 INFO L226 Difference]: Without dead ends: 3145 [2019-11-19 19:06:57,035 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2019-11-19 19:06:57,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3145 states. [2019-11-19 19:06:57,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3145 to 3037. [2019-11-19 19:06:57,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3037 states. [2019-11-19 19:06:57,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 7464 transitions. [2019-11-19 19:06:57,164 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 7464 transitions. Word has length 29 [2019-11-19 19:06:57,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:06:57,165 INFO L462 AbstractCegarLoop]: Abstraction has 3037 states and 7464 transitions. [2019-11-19 19:06:57,165 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-19 19:06:57,165 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 7464 transitions. [2019-11-19 19:06:57,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-19 19:06:57,169 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:06:57,170 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-19 19:06:57,377 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:06:57,378 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:06:57,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:06:57,379 INFO L82 PathProgramCache]: Analyzing trace with hash 802725422, now seen corresponding path program 1 times [2019-11-19 19:06:57,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:06:57,379 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284180844] [2019-11-19 19:06:57,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:06:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:06:57,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:06:57,507 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284180844] [2019-11-19 19:06:57,508 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441839746] [2019-11-19 19:06:57,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:06:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:06:57,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-19 19:06:57,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:06:57,604 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:06:57,605 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:06:57,609 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:06:57,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:06:57,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:06:57,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-11-19 19:06:57,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788205986] [2019-11-19 19:06:57,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-19 19:06:57,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:06:57,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-19 19:06:57,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-19 19:06:57,619 INFO L87 Difference]: Start difference. First operand 3037 states and 7464 transitions. Second operand 8 states. [2019-11-19 19:06:57,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:06:57,866 INFO L93 Difference]: Finished difference Result 5602 states and 13440 transitions. [2019-11-19 19:06:57,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-19 19:06:57,867 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2019-11-19 19:06:57,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:06:57,890 INFO L225 Difference]: With dead ends: 5602 [2019-11-19 19:06:57,890 INFO L226 Difference]: Without dead ends: 3901 [2019-11-19 19:06:57,891 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-19 19:06:57,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3901 states. [2019-11-19 19:06:58,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3901 to 3289. [2019-11-19 19:06:58,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3289 states. [2019-11-19 19:06:58,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3289 states to 3289 states and 7932 transitions. [2019-11-19 19:06:58,113 INFO L78 Accepts]: Start accepts. Automaton has 3289 states and 7932 transitions. Word has length 29 [2019-11-19 19:06:58,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:06:58,116 INFO L462 AbstractCegarLoop]: Abstraction has 3289 states and 7932 transitions. [2019-11-19 19:06:58,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-19 19:06:58,116 INFO L276 IsEmpty]: Start isEmpty. Operand 3289 states and 7932 transitions. [2019-11-19 19:06:58,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-19 19:06:58,124 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:06:58,125 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-19 19:06:58,328 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:06:58,329 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:06:58,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:06:58,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1154536654, now seen corresponding path program 1 times [2019-11-19 19:06:58,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:06:58,330 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823766816] [2019-11-19 19:06:58,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:06:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:06:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-19 19:06:58,469 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823766816] [2019-11-19 19:06:58,469 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84917835] [2019-11-19 19:06:58,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:06:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:06:58,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-19 19:06:58,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:06:58,573 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:06:58,575 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:06:58,577 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:06:58,582 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-19 19:06:58,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:06:58,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-11-19 19:06:58,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990538963] [2019-11-19 19:06:58,586 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-19 19:06:58,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:06:58,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-19 19:06:58,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-19 19:06:58,587 INFO L87 Difference]: Start difference. First operand 3289 states and 7932 transitions. Second operand 9 states. [2019-11-19 19:06:58,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:06:58,887 INFO L93 Difference]: Finished difference Result 5854 states and 13944 transitions. [2019-11-19 19:06:58,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-19 19:06:58,888 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2019-11-19 19:06:58,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:06:58,905 INFO L225 Difference]: With dead ends: 5854 [2019-11-19 19:06:58,906 INFO L226 Difference]: Without dead ends: 3721 [2019-11-19 19:06:58,906 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-11-19 19:06:58,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3721 states. [2019-11-19 19:06:59,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3721 to 3469. [2019-11-19 19:06:59,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3469 states. [2019-11-19 19:06:59,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3469 states to 3469 states and 8328 transitions. [2019-11-19 19:06:59,017 INFO L78 Accepts]: Start accepts. Automaton has 3469 states and 8328 transitions. Word has length 37 [2019-11-19 19:06:59,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:06:59,017 INFO L462 AbstractCegarLoop]: Abstraction has 3469 states and 8328 transitions. [2019-11-19 19:06:59,017 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-19 19:06:59,018 INFO L276 IsEmpty]: Start isEmpty. Operand 3469 states and 8328 transitions. [2019-11-19 19:06:59,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-19 19:06:59,025 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:06:59,025 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-19 19:06:59,230 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:06:59,230 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:06:59,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:06:59,231 INFO L82 PathProgramCache]: Analyzing trace with hash -655311730, now seen corresponding path program 2 times [2019-11-19 19:06:59,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:06:59,233 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283949618] [2019-11-19 19:06:59,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:06:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:06:59,379 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:06:59,379 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283949618] [2019-11-19 19:06:59,380 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389368951] [2019-11-19 19:06:59,380 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:06:59,468 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-19 19:06:59,469 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 19:06:59,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-19 19:06:59,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:06:59,506 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:06:59,507 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:06:59,510 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:06:59,516 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:06:59,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:06:59,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-11-19 19:06:59,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162544466] [2019-11-19 19:06:59,518 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-19 19:06:59,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:06:59,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-19 19:06:59,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-19 19:06:59,519 INFO L87 Difference]: Start difference. First operand 3469 states and 8328 transitions. Second operand 10 states. [2019-11-19 19:06:59,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:06:59,907 INFO L93 Difference]: Finished difference Result 6664 states and 16005 transitions. [2019-11-19 19:06:59,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-19 19:06:59,908 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2019-11-19 19:06:59,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:06:59,926 INFO L225 Difference]: With dead ends: 6664 [2019-11-19 19:06:59,926 INFO L226 Difference]: Without dead ends: 3793 [2019-11-19 19:06:59,927 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2019-11-19 19:06:59,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3793 states. [2019-11-19 19:07:00,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3793 to 2893. [2019-11-19 19:07:00,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2893 states. [2019-11-19 19:07:00,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2893 states to 2893 states and 7134 transitions. [2019-11-19 19:07:00,011 INFO L78 Accepts]: Start accepts. Automaton has 2893 states and 7134 transitions. Word has length 37 [2019-11-19 19:07:00,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:07:00,011 INFO L462 AbstractCegarLoop]: Abstraction has 2893 states and 7134 transitions. [2019-11-19 19:07:00,012 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-19 19:07:00,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2893 states and 7134 transitions. [2019-11-19 19:07:00,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-19 19:07:00,016 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:07:00,017 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-19 19:07:00,221 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:00,221 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:07:00,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:07:00,222 INFO L82 PathProgramCache]: Analyzing trace with hash 65563883, now seen corresponding path program 3 times [2019-11-19 19:07:00,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:07:00,222 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116461877] [2019-11-19 19:07:00,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:07:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:07:00,370 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:00,370 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116461877] [2019-11-19 19:07:00,371 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510322822] [2019-11-19 19:07:00,371 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:00,444 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-19 19:07:00,445 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 19:07:00,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-19 19:07:00,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:07:00,473 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:00,474 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:00,475 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:00,478 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:00,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:07:00,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-11-19 19:07:00,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033622066] [2019-11-19 19:07:00,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-19 19:07:00,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:07:00,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-19 19:07:00,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-19 19:07:00,480 INFO L87 Difference]: Start difference. First operand 2893 states and 7134 transitions. Second operand 11 states. [2019-11-19 19:07:00,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:07:00,841 INFO L93 Difference]: Finished difference Result 5998 states and 14232 transitions. [2019-11-19 19:07:00,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-19 19:07:00,841 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2019-11-19 19:07:00,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:07:00,854 INFO L225 Difference]: With dead ends: 5998 [2019-11-19 19:07:00,855 INFO L226 Difference]: Without dead ends: 4297 [2019-11-19 19:07:00,856 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2019-11-19 19:07:00,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2019-11-19 19:07:00,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 4045. [2019-11-19 19:07:00,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4045 states. [2019-11-19 19:07:00,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4045 states to 4045 states and 9480 transitions. [2019-11-19 19:07:00,968 INFO L78 Accepts]: Start accepts. Automaton has 4045 states and 9480 transitions. Word has length 41 [2019-11-19 19:07:00,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:07:00,968 INFO L462 AbstractCegarLoop]: Abstraction has 4045 states and 9480 transitions. [2019-11-19 19:07:00,969 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-19 19:07:00,969 INFO L276 IsEmpty]: Start isEmpty. Operand 4045 states and 9480 transitions. [2019-11-19 19:07:00,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-19 19:07:00,975 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:07:00,976 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-19 19:07:01,179 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:01,180 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:07:01,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:07:01,180 INFO L82 PathProgramCache]: Analyzing trace with hash -2001437970, now seen corresponding path program 4 times [2019-11-19 19:07:01,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:07:01,183 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344094141] [2019-11-19 19:07:01,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:07:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:07:01,331 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:01,332 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344094141] [2019-11-19 19:07:01,332 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364158724] [2019-11-19 19:07:01,333 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:01,412 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-19 19:07:01,413 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 19:07:01,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-19 19:07:01,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:07:01,452 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:01,453 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:01,456 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:01,464 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:01,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:07:01,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-11-19 19:07:01,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055568098] [2019-11-19 19:07:01,468 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-19 19:07:01,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:07:01,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-19 19:07:01,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-11-19 19:07:01,469 INFO L87 Difference]: Start difference. First operand 4045 states and 9480 transitions. Second operand 12 states. [2019-11-19 19:07:01,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:07:01,894 INFO L93 Difference]: Finished difference Result 6358 states and 14952 transitions. [2019-11-19 19:07:01,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-19 19:07:01,895 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2019-11-19 19:07:01,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:07:01,906 INFO L225 Difference]: With dead ends: 6358 [2019-11-19 19:07:01,907 INFO L226 Difference]: Without dead ends: 4225 [2019-11-19 19:07:01,908 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2019-11-19 19:07:01,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4225 states. [2019-11-19 19:07:01,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4225 to 3181. [2019-11-19 19:07:01,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3181 states. [2019-11-19 19:07:01,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3181 states to 3181 states and 7710 transitions. [2019-11-19 19:07:01,997 INFO L78 Accepts]: Start accepts. Automaton has 3181 states and 7710 transitions. Word has length 45 [2019-11-19 19:07:01,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:07:01,997 INFO L462 AbstractCegarLoop]: Abstraction has 3181 states and 7710 transitions. [2019-11-19 19:07:01,998 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-19 19:07:01,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3181 states and 7710 transitions. [2019-11-19 19:07:02,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-11-19 19:07:02,002 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:07:02,003 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:07:02,206 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:02,207 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:07:02,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:07:02,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1244103093, now seen corresponding path program 5 times [2019-11-19 19:07:02,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:07:02,208 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663113171] [2019-11-19 19:07:02,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:07:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:07:02,386 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:02,387 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663113171] [2019-11-19 19:07:02,387 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904947195] [2019-11-19 19:07:02,387 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:02,450 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-11-19 19:07:02,450 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 19:07:02,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-19 19:07:02,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:07:02,482 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:02,483 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:02,485 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:02,489 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:02,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:07:02,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-11-19 19:07:02,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77618590] [2019-11-19 19:07:02,490 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-19 19:07:02,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:07:02,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-19 19:07:02,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-11-19 19:07:02,492 INFO L87 Difference]: Start difference. First operand 3181 states and 7710 transitions. Second operand 13 states. [2019-11-19 19:07:02,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:07:02,889 INFO L93 Difference]: Finished difference Result 6430 states and 15096 transitions. [2019-11-19 19:07:02,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-19 19:07:02,889 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2019-11-19 19:07:02,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:07:02,902 INFO L225 Difference]: With dead ends: 6430 [2019-11-19 19:07:02,902 INFO L226 Difference]: Without dead ends: 4513 [2019-11-19 19:07:02,903 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2019-11-19 19:07:02,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4513 states. [2019-11-19 19:07:02,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4513 to 3334. [2019-11-19 19:07:02,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3334 states. [2019-11-19 19:07:02,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3334 states to 3334 states and 8022 transitions. [2019-11-19 19:07:02,989 INFO L78 Accepts]: Start accepts. Automaton has 3334 states and 8022 transitions. Word has length 49 [2019-11-19 19:07:02,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:07:02,989 INFO L462 AbstractCegarLoop]: Abstraction has 3334 states and 8022 transitions. [2019-11-19 19:07:02,989 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-19 19:07:02,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3334 states and 8022 transitions. [2019-11-19 19:07:02,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-19 19:07:02,994 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:07:02,995 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:07:03,198 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:03,206 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:07:03,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:07:03,206 INFO L82 PathProgramCache]: Analyzing trace with hash 696506702, now seen corresponding path program 6 times [2019-11-19 19:07:03,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:07:03,207 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178032448] [2019-11-19 19:07:03,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:07:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:07:03,380 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:03,380 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178032448] [2019-11-19 19:07:03,381 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857041301] [2019-11-19 19:07:03,381 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:03,442 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2019-11-19 19:07:03,442 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 19:07:03,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-19 19:07:03,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:07:03,468 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:03,469 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:03,472 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:03,476 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:03,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:07:03,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2019-11-19 19:07:03,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697823604] [2019-11-19 19:07:03,478 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-19 19:07:03,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:07:03,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-19 19:07:03,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-11-19 19:07:03,479 INFO L87 Difference]: Start difference. First operand 3334 states and 8022 transitions. Second operand 14 states. [2019-11-19 19:07:03,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:07:03,971 INFO L93 Difference]: Finished difference Result 6970 states and 16176 transitions. [2019-11-19 19:07:03,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-19 19:07:03,971 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2019-11-19 19:07:03,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:07:03,987 INFO L225 Difference]: With dead ends: 6970 [2019-11-19 19:07:03,987 INFO L226 Difference]: Without dead ends: 5269 [2019-11-19 19:07:03,988 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2019-11-19 19:07:04,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5269 states. [2019-11-19 19:07:04,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5269 to 4909. [2019-11-19 19:07:04,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4909 states. [2019-11-19 19:07:04,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4909 states to 4909 states and 11208 transitions. [2019-11-19 19:07:04,089 INFO L78 Accepts]: Start accepts. Automaton has 4909 states and 11208 transitions. Word has length 53 [2019-11-19 19:07:04,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:07:04,089 INFO L462 AbstractCegarLoop]: Abstraction has 4909 states and 11208 transitions. [2019-11-19 19:07:04,090 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-19 19:07:04,090 INFO L276 IsEmpty]: Start isEmpty. Operand 4909 states and 11208 transitions. [2019-11-19 19:07:04,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-19 19:07:04,098 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:07:04,098 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:07:04,302 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:04,302 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:07:04,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:07:04,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1664012373, now seen corresponding path program 7 times [2019-11-19 19:07:04,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:07:04,303 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870889035] [2019-11-19 19:07:04,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:07:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:07:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:04,471 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870889035] [2019-11-19 19:07:04,471 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338379149] [2019-11-19 19:07:04,471 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:07:04,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-19 19:07:04,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:07:04,565 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:04,566 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:04,567 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:04,572 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:04,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:07:04,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-11-19 19:07:04,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319040970] [2019-11-19 19:07:04,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-19 19:07:04,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:07:04,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-19 19:07:04,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-11-19 19:07:04,574 INFO L87 Difference]: Start difference. First operand 4909 states and 11208 transitions. Second operand 15 states. [2019-11-19 19:07:05,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:07:05,173 INFO L93 Difference]: Finished difference Result 7222 states and 16680 transitions. [2019-11-19 19:07:05,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-19 19:07:05,174 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2019-11-19 19:07:05,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:07:05,185 INFO L225 Difference]: With dead ends: 7222 [2019-11-19 19:07:05,185 INFO L226 Difference]: Without dead ends: 5305 [2019-11-19 19:07:05,186 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2019-11-19 19:07:05,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5305 states. [2019-11-19 19:07:05,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5305 to 5197. [2019-11-19 19:07:05,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5197 states. [2019-11-19 19:07:05,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 11784 transitions. [2019-11-19 19:07:05,294 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 11784 transitions. Word has length 57 [2019-11-19 19:07:05,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:07:05,295 INFO L462 AbstractCegarLoop]: Abstraction has 5197 states and 11784 transitions. [2019-11-19 19:07:05,295 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-19 19:07:05,295 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 11784 transitions. [2019-11-19 19:07:05,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-19 19:07:05,304 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:07:05,304 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:07:05,508 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:05,509 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:07:05,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:07:05,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1170134958, now seen corresponding path program 8 times [2019-11-19 19:07:05,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:07:05,511 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370213402] [2019-11-19 19:07:05,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:07:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:07:05,681 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:05,682 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370213402] [2019-11-19 19:07:05,682 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18440625] [2019-11-19 19:07:05,682 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:05,750 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-19 19:07:05,750 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 19:07:05,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-19 19:07:05,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:07:05,801 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:05,802 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:05,803 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:05,811 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:05,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:07:05,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-11-19 19:07:05,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519596303] [2019-11-19 19:07:05,814 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-19 19:07:05,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:07:05,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-19 19:07:05,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2019-11-19 19:07:05,815 INFO L87 Difference]: Start difference. First operand 5197 states and 11784 transitions. Second operand 16 states. [2019-11-19 19:07:06,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:07:06,444 INFO L93 Difference]: Finished difference Result 8644 states and 19965 transitions. [2019-11-19 19:07:06,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-19 19:07:06,451 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 61 [2019-11-19 19:07:06,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:07:06,458 INFO L225 Difference]: With dead ends: 8644 [2019-11-19 19:07:06,458 INFO L226 Difference]: Without dead ends: 5989 [2019-11-19 19:07:06,459 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=640, Unknown=0, NotChecked=0, Total=870 [2019-11-19 19:07:06,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5989 states. [2019-11-19 19:07:06,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5989 to 5485. [2019-11-19 19:07:06,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5485 states. [2019-11-19 19:07:06,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5485 states to 5485 states and 12360 transitions. [2019-11-19 19:07:06,563 INFO L78 Accepts]: Start accepts. Automaton has 5485 states and 12360 transitions. Word has length 61 [2019-11-19 19:07:06,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:07:06,563 INFO L462 AbstractCegarLoop]: Abstraction has 5485 states and 12360 transitions. [2019-11-19 19:07:06,563 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-19 19:07:06,564 INFO L276 IsEmpty]: Start isEmpty. Operand 5485 states and 12360 transitions. [2019-11-19 19:07:06,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-19 19:07:06,572 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:07:06,572 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:07:06,776 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:06,777 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:07:06,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:07:06,778 INFO L82 PathProgramCache]: Analyzing trace with hash -164462325, now seen corresponding path program 9 times [2019-11-19 19:07:06,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:07:06,779 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116955448] [2019-11-19 19:07:06,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:07:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:07:06,983 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:06,987 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116955448] [2019-11-19 19:07:06,988 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687470855] [2019-11-19 19:07:06,989 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:07,066 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-11-19 19:07:07,066 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 19:07:07,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-19 19:07:07,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:07:07,094 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:07,095 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:07,098 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:07,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:07:07,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2019-11-19 19:07:07,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32841782] [2019-11-19 19:07:07,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-19 19:07:07,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:07:07,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-19 19:07:07,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2019-11-19 19:07:07,110 INFO L87 Difference]: Start difference. First operand 5485 states and 12360 transitions. Second operand 17 states. [2019-11-19 19:07:07,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:07:07,718 INFO L93 Difference]: Finished difference Result 7942 states and 18120 transitions. [2019-11-19 19:07:07,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-19 19:07:07,718 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2019-11-19 19:07:07,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:07:07,727 INFO L225 Difference]: With dead ends: 7942 [2019-11-19 19:07:07,727 INFO L226 Difference]: Without dead ends: 6241 [2019-11-19 19:07:07,731 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=249, Invalid=681, Unknown=0, NotChecked=0, Total=930 [2019-11-19 19:07:07,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2019-11-19 19:07:07,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 4126. [2019-11-19 19:07:07,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4126 states. [2019-11-19 19:07:07,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 9606 transitions. [2019-11-19 19:07:07,828 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 9606 transitions. Word has length 65 [2019-11-19 19:07:07,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:07:07,829 INFO L462 AbstractCegarLoop]: Abstraction has 4126 states and 9606 transitions. [2019-11-19 19:07:07,829 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-19 19:07:07,829 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 9606 transitions. [2019-11-19 19:07:07,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-11-19 19:07:07,843 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:07:07,843 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:07:08,049 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:08,050 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:07:08,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:07:08,050 INFO L82 PathProgramCache]: Analyzing trace with hash 130381326, now seen corresponding path program 10 times [2019-11-19 19:07:08,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:07:08,051 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978517183] [2019-11-19 19:07:08,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:07:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:07:08,318 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:08,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978517183] [2019-11-19 19:07:08,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460584772] [2019-11-19 19:07:08,320 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:08,436 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-19 19:07:08,437 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 19:07:08,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-19 19:07:08,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:07:08,502 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:08,502 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:08,505 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:08,518 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:08,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:07:08,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2019-11-19 19:07:08,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121158996] [2019-11-19 19:07:08,520 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-19 19:07:08,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:07:08,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-19 19:07:08,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2019-11-19 19:07:08,521 INFO L87 Difference]: Start difference. First operand 4126 states and 9606 transitions. Second operand 18 states. [2019-11-19 19:07:09,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:07:09,253 INFO L93 Difference]: Finished difference Result 9184 states and 21045 transitions. [2019-11-19 19:07:09,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-19 19:07:09,253 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 69 [2019-11-19 19:07:09,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:07:09,260 INFO L225 Difference]: With dead ends: 9184 [2019-11-19 19:07:09,260 INFO L226 Difference]: Without dead ends: 6529 [2019-11-19 19:07:09,260 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=296, Invalid=760, Unknown=0, NotChecked=0, Total=1056 [2019-11-19 19:07:09,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6529 states. [2019-11-19 19:07:09,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6529 to 4261. [2019-11-19 19:07:09,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4261 states. [2019-11-19 19:07:09,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4261 states to 4261 states and 9870 transitions. [2019-11-19 19:07:09,347 INFO L78 Accepts]: Start accepts. Automaton has 4261 states and 9870 transitions. Word has length 69 [2019-11-19 19:07:09,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:07:09,347 INFO L462 AbstractCegarLoop]: Abstraction has 4261 states and 9870 transitions. [2019-11-19 19:07:09,347 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-19 19:07:09,347 INFO L276 IsEmpty]: Start isEmpty. Operand 4261 states and 9870 transitions. [2019-11-19 19:07:09,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-19 19:07:09,353 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:07:09,353 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:07:09,557 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:09,558 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:07:09,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:07:09,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1621331349, now seen corresponding path program 11 times [2019-11-19 19:07:09,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:07:09,558 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977158260] [2019-11-19 19:07:09,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:07:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:07:09,738 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:09,739 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977158260] [2019-11-19 19:07:09,740 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214043984] [2019-11-19 19:07:09,741 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:09,820 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2019-11-19 19:07:09,820 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 19:07:09,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-19 19:07:09,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:07:09,872 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:09,873 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:09,877 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:09,886 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:09,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:07:09,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2019-11-19 19:07:09,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092145477] [2019-11-19 19:07:09,889 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-19 19:07:09,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:07:09,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-19 19:07:09,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-11-19 19:07:09,890 INFO L87 Difference]: Start difference. First operand 4261 states and 9870 transitions. Second operand 19 states. [2019-11-19 19:07:10,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:07:10,645 INFO L93 Difference]: Finished difference Result 9616 states and 21909 transitions. [2019-11-19 19:07:10,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-19 19:07:10,646 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 73 [2019-11-19 19:07:10,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:07:10,653 INFO L225 Difference]: With dead ends: 9616 [2019-11-19 19:07:10,653 INFO L226 Difference]: Without dead ends: 6961 [2019-11-19 19:07:10,654 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=363, Invalid=897, Unknown=0, NotChecked=0, Total=1260 [2019-11-19 19:07:10,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6961 states. [2019-11-19 19:07:10,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6961 to 4414. [2019-11-19 19:07:10,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4414 states. [2019-11-19 19:07:10,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4414 states to 4414 states and 10182 transitions. [2019-11-19 19:07:10,742 INFO L78 Accepts]: Start accepts. Automaton has 4414 states and 10182 transitions. Word has length 73 [2019-11-19 19:07:10,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:07:10,742 INFO L462 AbstractCegarLoop]: Abstraction has 4414 states and 10182 transitions. [2019-11-19 19:07:10,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-19 19:07:10,743 INFO L276 IsEmpty]: Start isEmpty. Operand 4414 states and 10182 transitions. [2019-11-19 19:07:10,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-11-19 19:07:10,749 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:07:10,749 INFO L410 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:07:10,953 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:10,953 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:07:10,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:07:10,953 INFO L82 PathProgramCache]: Analyzing trace with hash 972534894, now seen corresponding path program 12 times [2019-11-19 19:07:10,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:07:10,954 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318477001] [2019-11-19 19:07:10,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:07:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:07:11,179 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:11,180 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318477001] [2019-11-19 19:07:11,184 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397652363] [2019-11-19 19:07:11,184 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:11,257 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-11-19 19:07:11,258 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 19:07:11,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-19 19:07:11,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:07:11,293 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:11,293 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:11,294 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:11,303 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:11,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:07:11,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2019-11-19 19:07:11,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947712981] [2019-11-19 19:07:11,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-19 19:07:11,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:07:11,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-19 19:07:11,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2019-11-19 19:07:11,309 INFO L87 Difference]: Start difference. First operand 4414 states and 10182 transitions. Second operand 20 states. [2019-11-19 19:07:12,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:07:12,097 INFO L93 Difference]: Finished difference Result 9760 states and 22197 transitions. [2019-11-19 19:07:12,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-19 19:07:12,098 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 77 [2019-11-19 19:07:12,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:07:12,106 INFO L225 Difference]: With dead ends: 9760 [2019-11-19 19:07:12,106 INFO L226 Difference]: Without dead ends: 6673 [2019-11-19 19:07:12,107 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=371, Invalid=1035, Unknown=0, NotChecked=0, Total=1406 [2019-11-19 19:07:12,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6673 states. [2019-11-19 19:07:12,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6673 to 4333. [2019-11-19 19:07:12,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4333 states. [2019-11-19 19:07:12,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4333 states to 4333 states and 10014 transitions. [2019-11-19 19:07:12,199 INFO L78 Accepts]: Start accepts. Automaton has 4333 states and 10014 transitions. Word has length 77 [2019-11-19 19:07:12,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:07:12,199 INFO L462 AbstractCegarLoop]: Abstraction has 4333 states and 10014 transitions. [2019-11-19 19:07:12,200 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-19 19:07:12,200 INFO L276 IsEmpty]: Start isEmpty. Operand 4333 states and 10014 transitions. [2019-11-19 19:07:12,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-11-19 19:07:12,206 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:07:12,206 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:07:12,410 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:12,411 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:07:12,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:07:12,411 INFO L82 PathProgramCache]: Analyzing trace with hash 363791307, now seen corresponding path program 13 times [2019-11-19 19:07:12,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:07:12,412 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764406076] [2019-11-19 19:07:12,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:07:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:07:12,752 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:12,752 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764406076] [2019-11-19 19:07:12,752 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311328546] [2019-11-19 19:07:12,753 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:07:12,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-19 19:07:12,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:07:12,848 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:12,849 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:12,850 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:12,859 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:12,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:07:12,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2019-11-19 19:07:12,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671751708] [2019-11-19 19:07:12,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-19 19:07:12,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:07:12,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-19 19:07:12,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2019-11-19 19:07:12,863 INFO L87 Difference]: Start difference. First operand 4333 states and 10014 transitions. Second operand 21 states. [2019-11-19 19:07:13,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:07:13,609 INFO L93 Difference]: Finished difference Result 8878 states and 19992 transitions. [2019-11-19 19:07:13,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-19 19:07:13,610 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 81 [2019-11-19 19:07:13,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:07:13,618 INFO L225 Difference]: With dead ends: 8878 [2019-11-19 19:07:13,618 INFO L226 Difference]: Without dead ends: 7177 [2019-11-19 19:07:13,619 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=441, Invalid=1041, Unknown=0, NotChecked=0, Total=1482 [2019-11-19 19:07:13,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7177 states. [2019-11-19 19:07:13,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7177 to 6925. [2019-11-19 19:07:13,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6925 states. [2019-11-19 19:07:13,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6925 states to 6925 states and 15240 transitions. [2019-11-19 19:07:13,730 INFO L78 Accepts]: Start accepts. Automaton has 6925 states and 15240 transitions. Word has length 81 [2019-11-19 19:07:13,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:07:13,730 INFO L462 AbstractCegarLoop]: Abstraction has 6925 states and 15240 transitions. [2019-11-19 19:07:13,730 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-19 19:07:13,730 INFO L276 IsEmpty]: Start isEmpty. Operand 6925 states and 15240 transitions. [2019-11-19 19:07:13,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-19 19:07:13,740 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:07:13,740 INFO L410 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:07:13,940 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:13,941 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:07:13,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:07:13,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1186304718, now seen corresponding path program 14 times [2019-11-19 19:07:13,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:07:13,942 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589306585] [2019-11-19 19:07:13,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:07:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:07:14,211 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:14,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589306585] [2019-11-19 19:07:14,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191196722] [2019-11-19 19:07:14,212 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:14,286 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-19 19:07:14,286 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 19:07:14,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-19 19:07:14,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:07:14,322 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:14,323 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:14,323 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:14,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:07:14,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2019-11-19 19:07:14,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778248465] [2019-11-19 19:07:14,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-19 19:07:14,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:07:14,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-19 19:07:14,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2019-11-19 19:07:14,336 INFO L87 Difference]: Start difference. First operand 6925 states and 15240 transitions. Second operand 22 states. [2019-11-19 19:07:15,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:07:15,224 INFO L93 Difference]: Finished difference Result 9238 states and 20712 transitions. [2019-11-19 19:07:15,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-19 19:07:15,225 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 85 [2019-11-19 19:07:15,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:07:15,233 INFO L225 Difference]: With dead ends: 9238 [2019-11-19 19:07:15,233 INFO L226 Difference]: Without dead ends: 7537 [2019-11-19 19:07:15,233 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=447, Invalid=1193, Unknown=0, NotChecked=0, Total=1640 [2019-11-19 19:07:15,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7537 states. [2019-11-19 19:07:15,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7537 to 4837. [2019-11-19 19:07:15,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4837 states. [2019-11-19 19:07:15,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4837 states to 4837 states and 11022 transitions. [2019-11-19 19:07:15,333 INFO L78 Accepts]: Start accepts. Automaton has 4837 states and 11022 transitions. Word has length 85 [2019-11-19 19:07:15,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:07:15,333 INFO L462 AbstractCegarLoop]: Abstraction has 4837 states and 11022 transitions. [2019-11-19 19:07:15,334 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-19 19:07:15,334 INFO L276 IsEmpty]: Start isEmpty. Operand 4837 states and 11022 transitions. [2019-11-19 19:07:15,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-19 19:07:15,343 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:07:15,344 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:07:15,557 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:15,557 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:07:15,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:07:15,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1988769067, now seen corresponding path program 15 times [2019-11-19 19:07:15,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:07:15,558 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034382951] [2019-11-19 19:07:15,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:07:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:07:15,816 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:15,817 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034382951] [2019-11-19 19:07:15,817 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31995878] [2019-11-19 19:07:15,817 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:15,887 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2019-11-19 19:07:15,887 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 19:07:15,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-19 19:07:15,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:07:15,931 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:15,932 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:15,933 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:15,941 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:15,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:07:15,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2019-11-19 19:07:15,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008738884] [2019-11-19 19:07:15,943 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-19 19:07:15,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:07:15,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-19 19:07:15,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2019-11-19 19:07:15,944 INFO L87 Difference]: Start difference. First operand 4837 states and 11022 transitions. Second operand 23 states. [2019-11-19 19:07:17,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:07:17,071 INFO L93 Difference]: Finished difference Result 10624 states and 23925 transitions. [2019-11-19 19:07:17,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-11-19 19:07:17,071 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 89 [2019-11-19 19:07:17,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:07:17,086 INFO L225 Difference]: With dead ends: 10624 [2019-11-19 19:07:17,087 INFO L226 Difference]: Without dead ends: 7753 [2019-11-19 19:07:17,088 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=494, Invalid=1398, Unknown=0, NotChecked=0, Total=1892 [2019-11-19 19:07:17,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7753 states. [2019-11-19 19:07:17,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7753 to 7501. [2019-11-19 19:07:17,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7501 states. [2019-11-19 19:07:17,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7501 states to 7501 states and 16392 transitions. [2019-11-19 19:07:17,350 INFO L78 Accepts]: Start accepts. Automaton has 7501 states and 16392 transitions. Word has length 89 [2019-11-19 19:07:17,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:07:17,354 INFO L462 AbstractCegarLoop]: Abstraction has 7501 states and 16392 transitions. [2019-11-19 19:07:17,354 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-19 19:07:17,355 INFO L276 IsEmpty]: Start isEmpty. Operand 7501 states and 16392 transitions. [2019-11-19 19:07:17,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-19 19:07:17,375 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:07:17,375 INFO L410 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:07:17,580 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:17,581 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:07:17,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:07:17,581 INFO L82 PathProgramCache]: Analyzing trace with hash 945754414, now seen corresponding path program 16 times [2019-11-19 19:07:17,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:07:17,582 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769951206] [2019-11-19 19:07:17,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:07:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:07:17,967 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:17,968 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769951206] [2019-11-19 19:07:17,968 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749206153] [2019-11-19 19:07:17,968 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:18,046 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-19 19:07:18,046 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 19:07:18,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-19 19:07:18,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:07:18,078 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:18,079 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:18,080 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:18,091 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:18,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:07:18,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2019-11-19 19:07:18,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499489137] [2019-11-19 19:07:18,092 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-19 19:07:18,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:07:18,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-19 19:07:18,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2019-11-19 19:07:18,094 INFO L87 Difference]: Start difference. First operand 7501 states and 16392 transitions. Second operand 24 states. [2019-11-19 19:07:19,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:07:19,430 INFO L93 Difference]: Finished difference Result 9814 states and 21864 transitions. [2019-11-19 19:07:19,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-19 19:07:19,431 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 93 [2019-11-19 19:07:19,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:07:19,442 INFO L225 Difference]: With dead ends: 9814 [2019-11-19 19:07:19,442 INFO L226 Difference]: Without dead ends: 7681 [2019-11-19 19:07:19,444 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=557, Invalid=1335, Unknown=0, NotChecked=0, Total=1892 [2019-11-19 19:07:19,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7681 states. [2019-11-19 19:07:19,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7681 to 7537. [2019-11-19 19:07:19,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7537 states. [2019-11-19 19:07:19,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7537 states to 7537 states and 16428 transitions. [2019-11-19 19:07:19,561 INFO L78 Accepts]: Start accepts. Automaton has 7537 states and 16428 transitions. Word has length 93 [2019-11-19 19:07:19,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:07:19,561 INFO L462 AbstractCegarLoop]: Abstraction has 7537 states and 16428 transitions. [2019-11-19 19:07:19,561 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-19 19:07:19,562 INFO L276 IsEmpty]: Start isEmpty. Operand 7537 states and 16428 transitions. [2019-11-19 19:07:19,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-19 19:07:19,574 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:07:19,574 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:07:19,778 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:19,779 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:07:19,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:07:19,779 INFO L82 PathProgramCache]: Analyzing trace with hash 2135819915, now seen corresponding path program 17 times [2019-11-19 19:07:19,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:07:19,779 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391653975] [2019-11-19 19:07:19,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:07:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:07:20,088 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:20,088 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391653975] [2019-11-19 19:07:20,088 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440531852] [2019-11-19 19:07:20,088 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:20,160 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-11-19 19:07:20,160 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 19:07:20,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 26 conjunts are in the unsatisfiable core [2019-11-19 19:07:20,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:07:20,192 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:20,193 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:20,194 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 19:07:20,202 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:07:20,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:07:20,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2019-11-19 19:07:20,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445494692] [2019-11-19 19:07:20,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-19 19:07:20,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:07:20,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-19 19:07:20,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2019-11-19 19:07:20,204 INFO L87 Difference]: Start difference. First operand 7537 states and 16428 transitions. Second operand 25 states. [2019-11-19 19:07:21,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:07:21,330 INFO L93 Difference]: Finished difference Result 9886 states and 22008 transitions. [2019-11-19 19:07:21,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-11-19 19:07:21,331 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 97 [2019-11-19 19:07:21,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:07:21,343 INFO L225 Difference]: With dead ends: 9886 [2019-11-19 19:07:21,344 INFO L226 Difference]: Without dead ends: 8185 [2019-11-19 19:07:21,345 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=647, Invalid=1515, Unknown=0, NotChecked=0, Total=2162 [2019-11-19 19:07:21,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8185 states. [2019-11-19 19:07:21,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8185 to 7933. [2019-11-19 19:07:21,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7933 states. [2019-11-19 19:07:21,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7933 states to 7933 states and 17256 transitions. [2019-11-19 19:07:21,466 INFO L78 Accepts]: Start accepts. Automaton has 7933 states and 17256 transitions. Word has length 97 [2019-11-19 19:07:21,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:07:21,467 INFO L462 AbstractCegarLoop]: Abstraction has 7933 states and 17256 transitions. [2019-11-19 19:07:21,467 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-19 19:07:21,467 INFO L276 IsEmpty]: Start isEmpty. Operand 7933 states and 17256 transitions. [2019-11-19 19:07:21,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-19 19:07:21,479 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:07:21,479 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:07:21,691 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:07:21,692 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:07:21,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:07:21,692 INFO L82 PathProgramCache]: Analyzing trace with hash 2058738673, now seen corresponding path program 18 times [2019-11-19 19:07:21,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:07:21,692 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990764516] [2019-11-19 19:07:21,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:07:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:07:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:07:21,798 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 19:07:21,799 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 19:07:21,966 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-19 19:07:21,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:07:21 BasicIcfg [2019-11-19 19:07:21,969 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 19:07:21,970 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 19:07:21,970 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 19:07:21,970 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 19:07:21,971 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:06:52" (3/4) ... [2019-11-19 19:07:21,973 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 19:07:22,101 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 19:07:22,101 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 19:07:22,103 INFO L168 Benchmark]: Toolchain (without parser) took 30753.07 ms. Allocated memory was 1.0 GB in the beginning and 1.8 GB in the end (delta: 734.0 MB). Free memory was 951.0 MB in the beginning and 857.3 MB in the end (delta: 93.6 MB). Peak memory consumption was 827.6 MB. Max. memory is 11.5 GB. [2019-11-19 19:07:22,104 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 19:07:22,104 INFO L168 Benchmark]: CACSL2BoogieTranslator took 756.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -164.2 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. [2019-11-19 19:07:22,104 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 19:07:22,107 INFO L168 Benchmark]: Boogie Preprocessor took 27.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-19 19:07:22,107 INFO L168 Benchmark]: RCFGBuilder took 425.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2019-11-19 19:07:22,108 INFO L168 Benchmark]: TraceAbstraction took 29337.69 ms. Allocated memory was 1.2 GB in the beginning and 1.8 GB in the end (delta: 588.3 MB). Free memory was 1.1 GB in the beginning and 874.2 MB in the end (delta: 216.6 MB). Peak memory consumption was 804.8 MB. Max. memory is 11.5 GB. [2019-11-19 19:07:22,108 INFO L168 Benchmark]: Witness Printer took 131.36 ms. Allocated memory is still 1.8 GB. Free memory was 874.2 MB in the beginning and 857.3 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 11.5 GB. [2019-11-19 19:07:22,110 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 756.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -164.2 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 67.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 425.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 29337.69 ms. Allocated memory was 1.2 GB in the beginning and 1.8 GB in the end (delta: 588.3 MB). Free memory was 1.1 GB in the beginning and 874.2 MB in the end (delta: 216.6 MB). Peak memory consumption was 804.8 MB. Max. memory is 11.5 GB. * Witness Printer took 131.36 ms. Allocated memory is still 1.8 GB. Free memory was 874.2 MB in the beginning and 857.3 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 703]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L675] 0 int i = 3, j = 6; VAL [i=3, j=6] [L693] 0 pthread_t id1, id2; VAL [i=3, j=6] [L694] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arg={0:0}, i=3, j=6] [L695] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arg={0:0}, arg={0:0}, i=3, j=6] [L685] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L677] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L677] COND TRUE 1 k < 10 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1, k=0, k++=0] [L685] COND TRUE 2 k < 10 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1, k++=0] [L677] COND TRUE 1 k < 10 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=0, k=1] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=2, k=0] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L685] COND TRUE 2 k < 10 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L677] COND TRUE 1 k < 10 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=1, k=2] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=3, k=1] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=3, k=2] [L685] COND TRUE 2 k < 10 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L677] COND TRUE 1 k < 10 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=2] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=4, k=2] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L685] COND TRUE 2 k < 10 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L677] COND TRUE 1 k < 10 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=3, k=4] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=3, k=5] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=5, k=4] [L685] COND TRUE 2 k < 10 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=5] [L677] COND TRUE 1 k < 10 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=4, k=5] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=4, k=6] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L685] COND TRUE 2 k < 10 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=6] [L677] COND TRUE 1 k < 10 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=5] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=5, k=7] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L685] COND TRUE 2 k < 10 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=7] [L677] COND TRUE 1 k < 10 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=6, k=7] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=8, k=6] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=8, k=7] [L685] COND TRUE 2 k < 10 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=7] [L677] COND TRUE 1 k < 10 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=7, k=8] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=9, k=7] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=9, k=8] [L685] COND TRUE 2 k < 10 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=8] [L677] COND TRUE 1 k < 10 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=8, k=9] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=9] [L685] COND TRUE 2 k < 10 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L697] 0 int condI = i >= (2*10 +6); [L700] 0 int condJ = j >= (2*10 +6); VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L702] COND TRUE 0 condI || condJ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L703] 0 __VERIFIER_error() VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 100 locations, 1 error locations. Result: UNSAFE, OverallTime: 29.1s, OverallIterations: 24, TraceHistogramMax: 10, AutomataDifference: 13.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 3169 SDtfs, 22133 SDslu, 20008 SDs, 0 SdLazy, 4086 SolverSat, 4746 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1715 GetRequests, 1175 SyntacticMatches, 0 SemanticMatches, 540 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3042 ImplicationChecksByTransitivity, 8.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8842occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 23 MinimizatonAttempts, 19404 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 2519 NumberOfCodeBlocks, 2519 NumberOfCodeBlocksAsserted, 103 NumberOfCheckSat, 2380 ConstructedInterpolants, 0 QuantifiedInterpolants, 479064 SizeOfPredicates, 267 NumberOfNonLiveVariables, 2904 ConjunctsInSsa, 332 ConjunctsInUnsatCore, 42 InterpolantComputations, 4 PerfectInterpolantSequences, 4/3906 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...