/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread/fib_bench_longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 21:29:24,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 21:29:24,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 21:29:25,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 21:29:25,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 21:29:25,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 21:29:25,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 21:29:25,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 21:29:25,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 21:29:25,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 21:29:25,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 21:29:25,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 21:29:25,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 21:29:25,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 21:29:25,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 21:29:25,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 21:29:25,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 21:29:25,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 21:29:25,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 21:29:25,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 21:29:25,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 21:29:25,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 21:29:25,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 21:29:25,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 21:29:25,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-21 21:29:25,073 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-21 21:29:25,073 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-21 21:29:25,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-21 21:29:25,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-21 21:29:25,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-21 21:29:25,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 21:29:25,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 21:29:25,079 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 21:29:25,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 21:29:25,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 21:29:25,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 21:29:25,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 21:29:25,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 21:29:25,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 21:29:25,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 21:29:25,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 21:29:25,085 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-21 21:29:25,126 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 21:29:25,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 21:29:25,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 21:29:25,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 21:29:25,129 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 21:29:25,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 21:29:25,130 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 21:29:25,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 21:29:25,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 21:29:25,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 21:29:25,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 21:29:25,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 21:29:25,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 21:29:25,133 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 21:29:25,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 21:29:25,133 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 21:29:25,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 21:29:25,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 21:29:25,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 21:29:25,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 21:29:25,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 21:29:25,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 21:29:25,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 21:29:25,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-21 21:29:25,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 21:29:25,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 21:29:25,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 21:29:25,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 21:29:25,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-21 21:29:25,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-21 21:29:25,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 21:29:25,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 21:29:25,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 21:29:25,494 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 21:29:25,496 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 21:29:25,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longer-2.i [2020-10-21 21:29:25,567 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb2a8c54c/235e564fc04e45daa5ab4ec5a71c9c3c/FLAG19c6a9c14 [2020-10-21 21:29:26,115 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 21:29:26,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longer-2.i [2020-10-21 21:29:26,133 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb2a8c54c/235e564fc04e45daa5ab4ec5a71c9c3c/FLAG19c6a9c14 [2020-10-21 21:29:26,416 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb2a8c54c/235e564fc04e45daa5ab4ec5a71c9c3c [2020-10-21 21:29:26,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 21:29:26,432 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 21:29:26,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 21:29:26,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 21:29:26,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 21:29:26,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 09:29:26" (1/1) ... [2020-10-21 21:29:26,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3335a62e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:26, skipping insertion in model container [2020-10-21 21:29:26,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 09:29:26" (1/1) ... [2020-10-21 21:29:26,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 21:29:26,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 21:29:26,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 21:29:26,977 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 21:29:27,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 21:29:27,089 INFO L208 MainTranslator]: Completed translation [2020-10-21 21:29:27,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:27 WrapperNode [2020-10-21 21:29:27,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 21:29:27,091 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 21:29:27,091 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 21:29:27,091 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 21:29:27,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:27" (1/1) ... [2020-10-21 21:29:27,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:27" (1/1) ... [2020-10-21 21:29:27,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 21:29:27,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 21:29:27,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 21:29:27,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 21:29:27,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:27" (1/1) ... [2020-10-21 21:29:27,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:27" (1/1) ... [2020-10-21 21:29:27,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:27" (1/1) ... [2020-10-21 21:29:27,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:27" (1/1) ... [2020-10-21 21:29:27,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:27" (1/1) ... [2020-10-21 21:29:27,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:27" (1/1) ... [2020-10-21 21:29:27,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:27" (1/1) ... [2020-10-21 21:29:27,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 21:29:27,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 21:29:27,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 21:29:27,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 21:29:27,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:27" (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 [2020-10-21 21:29:27,243 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-21 21:29:27,244 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-21 21:29:27,244 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-21 21:29:27,244 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-21 21:29:27,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 21:29:27,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-21 21:29:27,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 21:29:27,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 21:29:27,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 21:29:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-21 21:29:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 21:29:27,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 21:29:27,249 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 21:29:27,621 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 21:29:27,621 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-21 21:29:27,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 09:29:27 BoogieIcfgContainer [2020-10-21 21:29:27,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 21:29:27,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 21:29:27,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 21:29:27,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 21:29:27,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 09:29:26" (1/3) ... [2020-10-21 21:29:27,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d4a669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 09:29:27, skipping insertion in model container [2020-10-21 21:29:27,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:27" (2/3) ... [2020-10-21 21:29:27,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d4a669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 09:29:27, skipping insertion in model container [2020-10-21 21:29:27,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 09:29:27" (3/3) ... [2020-10-21 21:29:27,636 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench_longer-2.i [2020-10-21 21:29:27,649 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 21:29:27,649 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-21 21:29:27,658 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 21:29:27,659 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 21:29:27,687 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,687 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,687 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,687 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,688 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,688 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,688 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,689 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,689 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,689 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,690 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,690 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,690 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,690 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,691 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,691 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,691 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,692 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,692 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,695 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,695 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,696 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,696 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,696 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,697 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,697 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,697 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,698 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,698 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,698 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,702 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,702 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,702 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,703 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,703 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,703 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,708 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,709 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,709 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,709 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,710 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,710 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,712 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 21:29:27,726 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-21 21:29:27,744 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 21:29:27,744 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 21:29:27,745 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 21:29:27,745 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 21:29:27,745 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 21:29:27,745 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 21:29:27,745 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 21:29:27,745 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 21:29:27,757 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 21:29:27,760 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 66 transitions, 142 flow [2020-10-21 21:29:27,762 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 66 transitions, 142 flow [2020-10-21 21:29:27,763 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 66 transitions, 142 flow [2020-10-21 21:29:27,803 INFO L129 PetriNetUnfolder]: 6/64 cut-off events. [2020-10-21 21:29:27,803 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 21:29:27,810 INFO L80 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 6/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 107 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2020-10-21 21:29:27,816 INFO L116 LiptonReduction]: Number of co-enabled transitions 1272 [2020-10-21 21:29:28,988 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-21 21:29:29,410 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-10-21 21:29:29,536 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-21 21:29:29,588 INFO L131 LiptonReduction]: Checked pairs total: 1183 [2020-10-21 21:29:29,588 INFO L133 LiptonReduction]: Total number of compositions: 65 [2020-10-21 21:29:29,595 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2020-10-21 21:29:29,607 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-21 21:29:29,609 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-21 21:29:29,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-21 21:29:29,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:29,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-21 21:29:29,617 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:29,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:29,623 INFO L82 PathProgramCache]: Analyzing trace with hash -542844556, now seen corresponding path program 1 times [2020-10-21 21:29:29,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:29,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595271748] [2020-10-21 21:29:29,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:29,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:29,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595271748] [2020-10-21 21:29:29,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:29:29,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 21:29:29,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608169202] [2020-10-21 21:29:29,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 21:29:29,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:29,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 21:29:29,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 21:29:29,894 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-21 21:29:29,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:29,958 INFO L93 Difference]: Finished difference Result 83 states and 212 transitions. [2020-10-21 21:29:29,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 21:29:29,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-21 21:29:29,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:29,973 INFO L225 Difference]: With dead ends: 83 [2020-10-21 21:29:29,974 INFO L226 Difference]: Without dead ends: 54 [2020-10-21 21:29:29,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 21:29:29,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-21 21:29:30,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-10-21 21:29:30,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-21 21:29:30,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 120 transitions. [2020-10-21 21:29:30,020 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 120 transitions. Word has length 6 [2020-10-21 21:29:30,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:30,021 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 120 transitions. [2020-10-21 21:29:30,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 21:29:30,021 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 120 transitions. [2020-10-21 21:29:30,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 21:29:30,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:30,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:30,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 21:29:30,023 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:30,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:30,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1940739433, now seen corresponding path program 1 times [2020-10-21 21:29:30,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:30,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29657216] [2020-10-21 21:29:30,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:30,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:30,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29657216] [2020-10-21 21:29:30,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:29:30,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 21:29:30,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580106479] [2020-10-21 21:29:30,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 21:29:30,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:30,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 21:29:30,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 21:29:30,156 INFO L87 Difference]: Start difference. First operand 50 states and 120 transitions. Second operand 5 states. [2020-10-21 21:29:30,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:30,215 INFO L93 Difference]: Finished difference Result 80 states and 186 transitions. [2020-10-21 21:29:30,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 21:29:30,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-21 21:29:30,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:30,218 INFO L225 Difference]: With dead ends: 80 [2020-10-21 21:29:30,218 INFO L226 Difference]: Without dead ends: 75 [2020-10-21 21:29:30,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-21 21:29:30,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-21 21:29:30,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-10-21 21:29:30,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-21 21:29:30,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions. [2020-10-21 21:29:30,229 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 8 [2020-10-21 21:29:30,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:30,230 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 136 transitions. [2020-10-21 21:29:30,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 21:29:30,231 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions. [2020-10-21 21:29:30,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 21:29:30,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:30,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:30,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 21:29:30,232 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:30,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:30,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1981941347, now seen corresponding path program 1 times [2020-10-21 21:29:30,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:30,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364766676] [2020-10-21 21:29:30,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:30,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:30,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364766676] [2020-10-21 21:29:30,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:29:30,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 21:29:30,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698071024] [2020-10-21 21:29:30,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 21:29:30,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:30,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 21:29:30,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 21:29:30,312 INFO L87 Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 5 states. [2020-10-21 21:29:30,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:30,379 INFO L93 Difference]: Finished difference Result 83 states and 196 transitions. [2020-10-21 21:29:30,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 21:29:30,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-21 21:29:30,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:30,381 INFO L225 Difference]: With dead ends: 83 [2020-10-21 21:29:30,381 INFO L226 Difference]: Without dead ends: 77 [2020-10-21 21:29:30,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-21 21:29:30,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-21 21:29:30,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 66. [2020-10-21 21:29:30,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-21 21:29:30,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 157 transitions. [2020-10-21 21:29:30,392 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 157 transitions. Word has length 8 [2020-10-21 21:29:30,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:30,392 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 157 transitions. [2020-10-21 21:29:30,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 21:29:30,393 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 157 transitions. [2020-10-21 21:29:30,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 21:29:30,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:30,394 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:30,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 21:29:30,394 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:30,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:30,395 INFO L82 PathProgramCache]: Analyzing trace with hash -33351122, now seen corresponding path program 2 times [2020-10-21 21:29:30,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:30,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134710387] [2020-10-21 21:29:30,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:30,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:30,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134710387] [2020-10-21 21:29:30,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815245638] [2020-10-21 21:29:30,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-10-21 21:29:30,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 21:29:30,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:30,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 21:29:30,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:30,654 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:29:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:30,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:30,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2020-10-21 21:29:30,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409154417] [2020-10-21 21:29:30,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 21:29:30,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:30,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 21:29:30,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-21 21:29:30,679 INFO L87 Difference]: Start difference. First operand 66 states and 157 transitions. Second operand 10 states. [2020-10-21 21:29:30,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:30,767 INFO L93 Difference]: Finished difference Result 101 states and 235 transitions. [2020-10-21 21:29:30,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-21 21:29:30,768 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2020-10-21 21:29:30,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:30,769 INFO L225 Difference]: With dead ends: 101 [2020-10-21 21:29:30,769 INFO L226 Difference]: Without dead ends: 96 [2020-10-21 21:29:30,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:29:30,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-21 21:29:30,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2020-10-21 21:29:30,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-21 21:29:30,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 173 transitions. [2020-10-21 21:29:30,779 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 173 transitions. Word has length 9 [2020-10-21 21:29:30,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:30,780 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 173 transitions. [2020-10-21 21:29:30,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 21:29:30,780 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 173 transitions. [2020-10-21 21:29:30,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 21:29:30,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:30,781 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:30,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:29:30,996 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:30,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:30,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1310611417, now seen corresponding path program 2 times [2020-10-21 21:29:30,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:30,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366394382] [2020-10-21 21:29:30,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:31,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:31,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366394382] [2020-10-21 21:29:31,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725607586] [2020-10-21 21:29:31,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-10-21 21:29:31,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 21:29:31,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:31,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 21:29:31,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:31,170 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:29:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:31,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:31,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-21 21:29:31,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716932091] [2020-10-21 21:29:31,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 21:29:31,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:31,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 21:29:31,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-21 21:29:31,190 INFO L87 Difference]: Start difference. First operand 71 states and 173 transitions. Second operand 9 states. [2020-10-21 21:29:31,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:31,284 INFO L93 Difference]: Finished difference Result 96 states and 231 transitions. [2020-10-21 21:29:31,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-21 21:29:31,285 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-21 21:29:31,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:31,286 INFO L225 Difference]: With dead ends: 96 [2020-10-21 21:29:31,286 INFO L226 Difference]: Without dead ends: 90 [2020-10-21 21:29:31,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-21 21:29:31,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-21 21:29:31,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 77. [2020-10-21 21:29:31,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-21 21:29:31,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 190 transitions. [2020-10-21 21:29:31,295 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 190 transitions. Word has length 9 [2020-10-21 21:29:31,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:31,295 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 190 transitions. [2020-10-21 21:29:31,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 21:29:31,295 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 190 transitions. [2020-10-21 21:29:31,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 21:29:31,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:31,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:31,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:29:31,511 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:31,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:31,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1043120626, now seen corresponding path program 1 times [2020-10-21 21:29:31,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:31,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618472306] [2020-10-21 21:29:31,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:31,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:31,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618472306] [2020-10-21 21:29:31,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:29:31,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 21:29:31,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387844903] [2020-10-21 21:29:31,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 21:29:31,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:31,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 21:29:31,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-21 21:29:31,582 INFO L87 Difference]: Start difference. First operand 77 states and 190 transitions. Second operand 6 states. [2020-10-21 21:29:31,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:31,657 INFO L93 Difference]: Finished difference Result 103 states and 242 transitions. [2020-10-21 21:29:31,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-21 21:29:31,658 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-21 21:29:31,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:31,659 INFO L225 Difference]: With dead ends: 103 [2020-10-21 21:29:31,659 INFO L226 Difference]: Without dead ends: 98 [2020-10-21 21:29:31,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-21 21:29:31,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-21 21:29:31,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 78. [2020-10-21 21:29:31,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-21 21:29:31,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 191 transitions. [2020-10-21 21:29:31,667 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 191 transitions. Word has length 10 [2020-10-21 21:29:31,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:31,668 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 191 transitions. [2020-10-21 21:29:31,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 21:29:31,668 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 191 transitions. [2020-10-21 21:29:31,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 21:29:31,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:31,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:31,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 21:29:31,670 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:31,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:31,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1043091796, now seen corresponding path program 2 times [2020-10-21 21:29:31,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:31,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430074463] [2020-10-21 21:29:31,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:31,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:31,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430074463] [2020-10-21 21:29:31,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:29:31,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 21:29:31,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151551689] [2020-10-21 21:29:31,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 21:29:31,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:31,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 21:29:31,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-21 21:29:31,727 INFO L87 Difference]: Start difference. First operand 78 states and 191 transitions. Second operand 6 states. [2020-10-21 21:29:31,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:31,825 INFO L93 Difference]: Finished difference Result 103 states and 242 transitions. [2020-10-21 21:29:31,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-21 21:29:31,825 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-21 21:29:31,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:31,826 INFO L225 Difference]: With dead ends: 103 [2020-10-21 21:29:31,826 INFO L226 Difference]: Without dead ends: 98 [2020-10-21 21:29:31,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-21 21:29:31,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-21 21:29:31,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 82. [2020-10-21 21:29:31,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-21 21:29:31,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 194 transitions. [2020-10-21 21:29:31,834 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 194 transitions. Word has length 10 [2020-10-21 21:29:31,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:31,834 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 194 transitions. [2020-10-21 21:29:31,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 21:29:31,834 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 194 transitions. [2020-10-21 21:29:31,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 21:29:31,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:31,835 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:31,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-21 21:29:31,836 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:31,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:31,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1033855625, now seen corresponding path program 3 times [2020-10-21 21:29:31,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:31,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410255165] [2020-10-21 21:29:31,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:31,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:31,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410255165] [2020-10-21 21:29:31,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878541760] [2020-10-21 21:29:31,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-10-21 21:29:31,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 21:29:31,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:31,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 21:29:31,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:32,054 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:29:32,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:32,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:32,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 21:29:32,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090760736] [2020-10-21 21:29:32,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 21:29:32,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:32,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 21:29:32,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-21 21:29:32,080 INFO L87 Difference]: Start difference. First operand 82 states and 194 transitions. Second operand 12 states. [2020-10-21 21:29:32,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:32,185 INFO L93 Difference]: Finished difference Result 122 states and 284 transitions. [2020-10-21 21:29:32,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-21 21:29:32,186 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 10 [2020-10-21 21:29:32,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:32,187 INFO L225 Difference]: With dead ends: 122 [2020-10-21 21:29:32,187 INFO L226 Difference]: Without dead ends: 117 [2020-10-21 21:29:32,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-21 21:29:32,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-21 21:29:32,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-10-21 21:29:32,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-21 21:29:32,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 215 transitions. [2020-10-21 21:29:32,195 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 215 transitions. Word has length 10 [2020-10-21 21:29:32,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:32,195 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 215 transitions. [2020-10-21 21:29:32,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 21:29:32,196 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 215 transitions. [2020-10-21 21:29:32,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 21:29:32,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:32,197 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:32,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:29:32,412 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:32,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:32,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1974220067, now seen corresponding path program 3 times [2020-10-21 21:29:32,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:32,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200546601] [2020-10-21 21:29:32,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:32,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:32,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200546601] [2020-10-21 21:29:32,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240617475] [2020-10-21 21:29:32,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-10-21 21:29:32,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 21:29:32,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:32,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 21:29:32,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:32,642 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:29:32,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:32,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:32,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-21 21:29:32,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062775842] [2020-10-21 21:29:32,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 21:29:32,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:32,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 21:29:32,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-21 21:29:32,655 INFO L87 Difference]: Start difference. First operand 88 states and 215 transitions. Second operand 11 states. [2020-10-21 21:29:32,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:32,802 INFO L93 Difference]: Finished difference Result 121 states and 288 transitions. [2020-10-21 21:29:32,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-21 21:29:32,802 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-21 21:29:32,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:32,804 INFO L225 Difference]: With dead ends: 121 [2020-10-21 21:29:32,804 INFO L226 Difference]: Without dead ends: 115 [2020-10-21 21:29:32,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:29:32,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-21 21:29:32,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 94. [2020-10-21 21:29:32,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-21 21:29:32,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-21 21:29:32,816 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 10 [2020-10-21 21:29:32,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:32,817 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-21 21:29:32,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 21:29:32,820 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-21 21:29:32,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 21:29:32,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:32,821 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:33,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:29:33,038 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:33,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:33,039 INFO L82 PathProgramCache]: Analyzing trace with hash 2022998328, now seen corresponding path program 3 times [2020-10-21 21:29:33,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:33,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767900001] [2020-10-21 21:29:33,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:33,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:33,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767900001] [2020-10-21 21:29:33,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583138041] [2020-10-21 21:29:33,116 INFO L93 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 [2020-10-21 21:29:33,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 21:29:33,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:33,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 21:29:33,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:33,255 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:29:33,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:33,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:33,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-21 21:29:33,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975382840] [2020-10-21 21:29:33,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 21:29:33,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:33,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 21:29:33,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-21 21:29:33,268 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 11 states. [2020-10-21 21:29:33,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:33,477 INFO L93 Difference]: Finished difference Result 121 states and 289 transitions. [2020-10-21 21:29:33,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-21 21:29:33,483 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-21 21:29:33,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:33,485 INFO L225 Difference]: With dead ends: 121 [2020-10-21 21:29:33,485 INFO L226 Difference]: Without dead ends: 116 [2020-10-21 21:29:33,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-21 21:29:33,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-21 21:29:33,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 94. [2020-10-21 21:29:33,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-21 21:29:33,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-21 21:29:33,492 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 11 [2020-10-21 21:29:33,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:33,492 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-21 21:29:33,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 21:29:33,492 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-21 21:29:33,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 21:29:33,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:33,496 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:33,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-21 21:29:33,709 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:33,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:33,710 INFO L82 PathProgramCache]: Analyzing trace with hash 2023027158, now seen corresponding path program 4 times [2020-10-21 21:29:33,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:33,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956589432] [2020-10-21 21:29:33,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:33,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956589432] [2020-10-21 21:29:33,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372915537] [2020-10-21 21:29:33,783 INFO L93 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 [2020-10-21 21:29:33,831 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 21:29:33,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:33,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 21:29:33,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:33,903 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:29:33,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:33,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:33,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-21 21:29:33,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453829546] [2020-10-21 21:29:33,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 21:29:33,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:33,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 21:29:33,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-21 21:29:33,915 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 11 states. [2020-10-21 21:29:34,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:34,131 INFO L93 Difference]: Finished difference Result 131 states and 313 transitions. [2020-10-21 21:29:34,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 21:29:34,132 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-21 21:29:34,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:34,133 INFO L225 Difference]: With dead ends: 131 [2020-10-21 21:29:34,133 INFO L226 Difference]: Without dead ends: 126 [2020-10-21 21:29:34,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2020-10-21 21:29:34,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-21 21:29:34,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 95. [2020-10-21 21:29:34,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-21 21:29:34,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 237 transitions. [2020-10-21 21:29:34,139 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 237 transitions. Word has length 11 [2020-10-21 21:29:34,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:34,139 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 237 transitions. [2020-10-21 21:29:34,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 21:29:34,139 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 237 transitions. [2020-10-21 21:29:34,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 21:29:34,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:34,140 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:34,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:29:34,352 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:34,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:34,353 INFO L82 PathProgramCache]: Analyzing trace with hash 2023028119, now seen corresponding path program 5 times [2020-10-21 21:29:34,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:34,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816728011] [2020-10-21 21:29:34,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:34,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:34,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816728011] [2020-10-21 21:29:34,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609499864] [2020-10-21 21:29:34,412 INFO L93 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 [2020-10-21 21:29:34,466 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 21:29:34,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:34,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 21:29:34,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:34,524 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:29:34,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:34,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:34,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-21 21:29:34,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145207199] [2020-10-21 21:29:34,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 21:29:34,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:34,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 21:29:34,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-21 21:29:34,534 INFO L87 Difference]: Start difference. First operand 95 states and 237 transitions. Second operand 11 states. [2020-10-21 21:29:34,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:34,685 INFO L93 Difference]: Finished difference Result 126 states and 297 transitions. [2020-10-21 21:29:34,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-21 21:29:34,685 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-21 21:29:34,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:34,687 INFO L225 Difference]: With dead ends: 126 [2020-10-21 21:29:34,687 INFO L226 Difference]: Without dead ends: 121 [2020-10-21 21:29:34,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-21 21:29:34,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-21 21:29:34,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 95. [2020-10-21 21:29:34,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-21 21:29:34,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 233 transitions. [2020-10-21 21:29:34,693 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 233 transitions. Word has length 11 [2020-10-21 21:29:34,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:34,693 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 233 transitions. [2020-10-21 21:29:34,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 21:29:34,693 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 233 transitions. [2020-10-21 21:29:34,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 21:29:34,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:34,694 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:34,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:29:34,908 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:34,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:34,909 INFO L82 PathProgramCache]: Analyzing trace with hash 2023920888, now seen corresponding path program 6 times [2020-10-21 21:29:34,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:34,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079988460] [2020-10-21 21:29:34,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:34,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:34,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079988460] [2020-10-21 21:29:34,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363850025] [2020-10-21 21:29:34,969 INFO L93 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 [2020-10-21 21:29:35,036 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-21 21:29:35,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:35,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 21:29:35,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:35,124 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:29:35,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:35,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:35,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-21 21:29:35,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184625772] [2020-10-21 21:29:35,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 21:29:35,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:35,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 21:29:35,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-21 21:29:35,136 INFO L87 Difference]: Start difference. First operand 95 states and 233 transitions. Second operand 11 states. [2020-10-21 21:29:35,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:35,306 INFO L93 Difference]: Finished difference Result 127 states and 304 transitions. [2020-10-21 21:29:35,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-21 21:29:35,307 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-21 21:29:35,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:35,308 INFO L225 Difference]: With dead ends: 127 [2020-10-21 21:29:35,308 INFO L226 Difference]: Without dead ends: 122 [2020-10-21 21:29:35,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-21 21:29:35,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-21 21:29:35,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 97. [2020-10-21 21:29:35,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-21 21:29:35,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 241 transitions. [2020-10-21 21:29:35,313 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 241 transitions. Word has length 11 [2020-10-21 21:29:35,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:35,314 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 241 transitions. [2020-10-21 21:29:35,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 21:29:35,314 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 241 transitions. [2020-10-21 21:29:35,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 21:29:35,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:35,314 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:35,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-21 21:29:35,526 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:35,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:35,526 INFO L82 PathProgramCache]: Analyzing trace with hash 2023921849, now seen corresponding path program 7 times [2020-10-21 21:29:35,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:35,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098792523] [2020-10-21 21:29:35,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:35,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:35,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098792523] [2020-10-21 21:29:35,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804893083] [2020-10-21 21:29:35,593 INFO L93 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 [2020-10-21 21:29:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:35,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 21:29:35,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:35,682 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:29:35,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:35,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:35,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-21 21:29:35,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571217182] [2020-10-21 21:29:35,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 21:29:35,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:35,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 21:29:35,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-21 21:29:35,691 INFO L87 Difference]: Start difference. First operand 97 states and 241 transitions. Second operand 11 states. [2020-10-21 21:29:35,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:35,918 INFO L93 Difference]: Finished difference Result 141 states and 331 transitions. [2020-10-21 21:29:35,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 21:29:35,919 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-21 21:29:35,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:35,921 INFO L225 Difference]: With dead ends: 141 [2020-10-21 21:29:35,921 INFO L226 Difference]: Without dead ends: 136 [2020-10-21 21:29:35,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2020-10-21 21:29:35,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-21 21:29:35,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 96. [2020-10-21 21:29:35,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-21 21:29:35,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 236 transitions. [2020-10-21 21:29:35,927 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 236 transitions. Word has length 11 [2020-10-21 21:29:35,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:35,927 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 236 transitions. [2020-10-21 21:29:35,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 21:29:35,927 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 236 transitions. [2020-10-21 21:29:35,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 21:29:35,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:35,928 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:36,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:29:36,142 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:36,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:36,143 INFO L82 PathProgramCache]: Analyzing trace with hash 2023950679, now seen corresponding path program 8 times [2020-10-21 21:29:36,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:36,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49676846] [2020-10-21 21:29:36,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:36,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:36,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49676846] [2020-10-21 21:29:36,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78187525] [2020-10-21 21:29:36,202 INFO L93 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 [2020-10-21 21:29:36,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 21:29:36,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:36,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 21:29:36,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:36,315 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:29:36,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:36,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:36,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-21 21:29:36,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329750528] [2020-10-21 21:29:36,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 21:29:36,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:36,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 21:29:36,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-21 21:29:36,366 INFO L87 Difference]: Start difference. First operand 96 states and 236 transitions. Second operand 11 states. [2020-10-21 21:29:36,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:36,541 INFO L93 Difference]: Finished difference Result 131 states and 307 transitions. [2020-10-21 21:29:36,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-21 21:29:36,541 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-21 21:29:36,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:36,543 INFO L225 Difference]: With dead ends: 131 [2020-10-21 21:29:36,544 INFO L226 Difference]: Without dead ends: 126 [2020-10-21 21:29:36,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-21 21:29:36,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-21 21:29:36,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 98. [2020-10-21 21:29:36,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-21 21:29:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2020-10-21 21:29:36,549 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 11 [2020-10-21 21:29:36,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:36,550 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2020-10-21 21:29:36,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 21:29:36,550 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2020-10-21 21:29:36,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 21:29:36,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:36,551 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:36,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-21 21:29:36,755 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:36,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:36,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1984724146, now seen corresponding path program 4 times [2020-10-21 21:29:36,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:36,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091737872] [2020-10-21 21:29:36,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:36,848 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:36,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091737872] [2020-10-21 21:29:36,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650408065] [2020-10-21 21:29:36,849 INFO L93 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 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 [2020-10-21 21:29:36,911 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 21:29:36,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:36,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 21:29:36,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:37,048 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:29:37,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:37,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:37,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-21 21:29:37,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154762902] [2020-10-21 21:29:37,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-21 21:29:37,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:37,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-21 21:29:37,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-21 21:29:37,075 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand 14 states. [2020-10-21 21:29:37,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:37,210 INFO L93 Difference]: Finished difference Result 143 states and 333 transitions. [2020-10-21 21:29:37,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 21:29:37,210 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 11 [2020-10-21 21:29:37,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:37,212 INFO L225 Difference]: With dead ends: 143 [2020-10-21 21:29:37,212 INFO L226 Difference]: Without dead ends: 138 [2020-10-21 21:29:37,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-21 21:29:37,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-21 21:29:37,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2020-10-21 21:29:37,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-21 21:29:37,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 257 transitions. [2020-10-21 21:29:37,218 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 257 transitions. Word has length 11 [2020-10-21 21:29:37,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:37,218 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 257 transitions. [2020-10-21 21:29:37,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-21 21:29:37,219 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 257 transitions. [2020-10-21 21:29:37,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 21:29:37,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:37,220 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:37,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-21 21:29:37,420 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:37,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:37,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1071251737, now seen corresponding path program 4 times [2020-10-21 21:29:37,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:37,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521802201] [2020-10-21 21:29:37,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:37,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:37,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521802201] [2020-10-21 21:29:37,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481912176] [2020-10-21 21:29:37,500 INFO L93 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 [2020-10-21 21:29:37,543 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 21:29:37,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:37,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 21:29:37,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:37,619 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:29:37,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:37,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:37,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 21:29:37,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265378270] [2020-10-21 21:29:37,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-21 21:29:37,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:37,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-21 21:29:37,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:29:37,634 INFO L87 Difference]: Start difference. First operand 105 states and 257 transitions. Second operand 13 states. [2020-10-21 21:29:37,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:37,789 INFO L93 Difference]: Finished difference Result 147 states and 350 transitions. [2020-10-21 21:29:37,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 21:29:37,790 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-21 21:29:37,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:37,791 INFO L225 Difference]: With dead ends: 147 [2020-10-21 21:29:37,791 INFO L226 Difference]: Without dead ends: 141 [2020-10-21 21:29:37,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-10-21 21:29:37,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-21 21:29:37,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 113. [2020-10-21 21:29:37,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-21 21:29:37,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 282 transitions. [2020-10-21 21:29:37,797 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 282 transitions. Word has length 11 [2020-10-21 21:29:37,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:37,797 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 282 transitions. [2020-10-21 21:29:37,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-21 21:29:37,797 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 282 transitions. [2020-10-21 21:29:37,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:29:37,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:37,798 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:38,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-21 21:29:38,002 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:38,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:38,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1711561906, now seen corresponding path program 9 times [2020-10-21 21:29:38,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:38,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060349726] [2020-10-21 21:29:38,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:38,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:38,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060349726] [2020-10-21 21:29:38,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602354849] [2020-10-21 21:29:38,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-10-21 21:29:38,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 21:29:38,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:38,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 21:29:38,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:38,220 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:29:38,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:38,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:38,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 21:29:38,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692663167] [2020-10-21 21:29:38,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-21 21:29:38,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:38,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-21 21:29:38,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:29:38,239 INFO L87 Difference]: Start difference. First operand 113 states and 282 transitions. Second operand 13 states. [2020-10-21 21:29:38,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:38,481 INFO L93 Difference]: Finished difference Result 152 states and 363 transitions. [2020-10-21 21:29:38,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 21:29:38,482 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-21 21:29:38,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:38,483 INFO L225 Difference]: With dead ends: 152 [2020-10-21 21:29:38,483 INFO L226 Difference]: Without dead ends: 147 [2020-10-21 21:29:38,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-21 21:29:38,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-21 21:29:38,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 112. [2020-10-21 21:29:38,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-21 21:29:38,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 277 transitions. [2020-10-21 21:29:38,489 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 277 transitions. Word has length 12 [2020-10-21 21:29:38,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:38,489 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 277 transitions. [2020-10-21 21:29:38,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-21 21:29:38,489 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 277 transitions. [2020-10-21 21:29:38,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:29:38,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:38,490 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:38,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-21 21:29:38,691 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:38,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:38,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1711533076, now seen corresponding path program 10 times [2020-10-21 21:29:38,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:38,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199026511] [2020-10-21 21:29:38,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:38,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:38,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199026511] [2020-10-21 21:29:38,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487046619] [2020-10-21 21:29:38,785 INFO L93 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 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 [2020-10-21 21:29:38,846 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 21:29:38,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:38,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 21:29:38,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:38,952 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:29:40,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:40,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:40,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-21 21:29:40,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052424224] [2020-10-21 21:29:40,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-21 21:29:40,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:40,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-21 21:29:40,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=125, Unknown=1, NotChecked=0, Total=182 [2020-10-21 21:29:40,104 INFO L87 Difference]: Start difference. First operand 112 states and 277 transitions. Second operand 14 states. [2020-10-21 21:29:43,558 WARN L193 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-21 21:29:45,820 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 31 [2020-10-21 21:29:49,975 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-10-21 21:30:05,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:05,508 INFO L93 Difference]: Finished difference Result 168 states and 398 transitions. [2020-10-21 21:30:05,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-21 21:30:05,544 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 12 [2020-10-21 21:30:05,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:05,545 INFO L225 Difference]: With dead ends: 168 [2020-10-21 21:30:05,545 INFO L226 Difference]: Without dead ends: 163 [2020-10-21 21:30:05,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=195, Invalid=403, Unknown=2, NotChecked=0, Total=600 [2020-10-21 21:30:05,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-21 21:30:05,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 112. [2020-10-21 21:30:05,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-21 21:30:05,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 279 transitions. [2020-10-21 21:30:05,551 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 279 transitions. Word has length 12 [2020-10-21 21:30:05,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:05,551 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 279 transitions. [2020-10-21 21:30:05,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-21 21:30:05,551 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 279 transitions. [2020-10-21 21:30:05,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:30:05,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:05,552 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:05,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:30:05,764 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:05,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:05,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1711532115, now seen corresponding path program 11 times [2020-10-21 21:30:05,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:05,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512023223] [2020-10-21 21:30:05,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:05,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:05,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512023223] [2020-10-21 21:30:05,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623126651] [2020-10-21 21:30:05,849 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-10-21 21:30:05,911 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 21:30:05,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:05,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 21:30:05,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:05,997 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:30:06,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:06,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:06,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 21:30:06,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574544778] [2020-10-21 21:30:06,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-21 21:30:06,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:06,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-21 21:30:06,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:30:06,013 INFO L87 Difference]: Start difference. First operand 112 states and 279 transitions. Second operand 13 states. [2020-10-21 21:30:06,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:06,263 INFO L93 Difference]: Finished difference Result 148 states and 355 transitions. [2020-10-21 21:30:06,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 21:30:06,263 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-21 21:30:06,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:06,264 INFO L225 Difference]: With dead ends: 148 [2020-10-21 21:30:06,264 INFO L226 Difference]: Without dead ends: 143 [2020-10-21 21:30:06,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-21 21:30:06,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-21 21:30:06,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 111. [2020-10-21 21:30:06,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-21 21:30:06,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 274 transitions. [2020-10-21 21:30:06,269 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 274 transitions. Word has length 12 [2020-10-21 21:30:06,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:06,270 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 274 transitions. [2020-10-21 21:30:06,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-21 21:30:06,270 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 274 transitions. [2020-10-21 21:30:06,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:30:06,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:06,271 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:06,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:30:06,481 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:06,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:06,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1710639346, now seen corresponding path program 12 times [2020-10-21 21:30:06,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:06,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186630240] [2020-10-21 21:30:06,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:06,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:06,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186630240] [2020-10-21 21:30:06,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085681759] [2020-10-21 21:30:06,570 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-10-21 21:30:06,608 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-21 21:30:06,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:06,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 21:30:06,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:06,688 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:30:06,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:06,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:06,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 21:30:06,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601283371] [2020-10-21 21:30:06,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-21 21:30:06,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:06,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-21 21:30:06,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:30:06,701 INFO L87 Difference]: Start difference. First operand 111 states and 274 transitions. Second operand 13 states. [2020-10-21 21:30:07,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:07,071 INFO L93 Difference]: Finished difference Result 167 states and 399 transitions. [2020-10-21 21:30:07,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-21 21:30:07,071 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-21 21:30:07,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:07,073 INFO L225 Difference]: With dead ends: 167 [2020-10-21 21:30:07,073 INFO L226 Difference]: Without dead ends: 162 [2020-10-21 21:30:07,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=434, Unknown=0, NotChecked=0, Total=650 [2020-10-21 21:30:07,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-21 21:30:07,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 114. [2020-10-21 21:30:07,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-21 21:30:07,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 287 transitions. [2020-10-21 21:30:07,079 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 287 transitions. Word has length 12 [2020-10-21 21:30:07,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:07,079 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 287 transitions. [2020-10-21 21:30:07,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-21 21:30:07,080 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 287 transitions. [2020-10-21 21:30:07,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:30:07,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:07,080 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:07,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:30:07,295 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:07,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:07,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1710638385, now seen corresponding path program 13 times [2020-10-21 21:30:07,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:07,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623915513] [2020-10-21 21:30:07,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:07,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:07,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623915513] [2020-10-21 21:30:07,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605375069] [2020-10-21 21:30:07,358 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-10-21 21:30:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:07,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 21:30:07,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:07,485 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:30:07,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:07,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:07,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 21:30:07,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541018048] [2020-10-21 21:30:07,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-21 21:30:07,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:07,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-21 21:30:07,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:30:07,495 INFO L87 Difference]: Start difference. First operand 114 states and 287 transitions. Second operand 13 states. [2020-10-21 21:30:07,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:07,871 INFO L93 Difference]: Finished difference Result 177 states and 423 transitions. [2020-10-21 21:30:07,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-21 21:30:07,872 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-21 21:30:07,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:07,873 INFO L225 Difference]: With dead ends: 177 [2020-10-21 21:30:07,873 INFO L226 Difference]: Without dead ends: 169 [2020-10-21 21:30:07,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-10-21 21:30:07,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-21 21:30:07,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 114. [2020-10-21 21:30:07,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-21 21:30:07,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 283 transitions. [2020-10-21 21:30:07,879 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 283 transitions. Word has length 12 [2020-10-21 21:30:07,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:07,879 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 283 transitions. [2020-10-21 21:30:07,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-21 21:30:07,879 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 283 transitions. [2020-10-21 21:30:07,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:30:07,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:07,880 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:08,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-21 21:30:08,081 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:08,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:08,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1710609555, now seen corresponding path program 14 times [2020-10-21 21:30:08,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:08,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029235305] [2020-10-21 21:30:08,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:08,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:08,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029235305] [2020-10-21 21:30:08,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434663996] [2020-10-21 21:30:08,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-10-21 21:30:08,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 21:30:08,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:08,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 21:30:08,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:08,289 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:30:08,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:08,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:08,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 21:30:08,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282756565] [2020-10-21 21:30:08,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-21 21:30:08,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:08,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-21 21:30:08,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:30:08,321 INFO L87 Difference]: Start difference. First operand 114 states and 283 transitions. Second operand 13 states. [2020-10-21 21:30:08,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:08,659 INFO L93 Difference]: Finished difference Result 165 states and 395 transitions. [2020-10-21 21:30:08,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-21 21:30:08,660 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-21 21:30:08,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:08,662 INFO L225 Difference]: With dead ends: 165 [2020-10-21 21:30:08,662 INFO L226 Difference]: Without dead ends: 160 [2020-10-21 21:30:08,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2020-10-21 21:30:08,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-21 21:30:08,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 112. [2020-10-21 21:30:08,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-21 21:30:08,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 275 transitions. [2020-10-21 21:30:08,668 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 275 transitions. Word has length 12 [2020-10-21 21:30:08,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:08,668 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 275 transitions. [2020-10-21 21:30:08,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-21 21:30:08,669 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 275 transitions. [2020-10-21 21:30:08,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:30:08,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:08,669 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:08,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-21 21:30:08,882 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:08,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:08,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1682933716, now seen corresponding path program 15 times [2020-10-21 21:30:08,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:08,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861961919] [2020-10-21 21:30:08,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:08,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:08,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861961919] [2020-10-21 21:30:08,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608630473] [2020-10-21 21:30:08,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-10-21 21:30:09,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 21:30:09,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:09,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 21:30:09,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:09,099 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:30:09,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:09,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:09,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 21:30:09,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674969584] [2020-10-21 21:30:09,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-21 21:30:09,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:09,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-21 21:30:09,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:30:09,117 INFO L87 Difference]: Start difference. First operand 112 states and 275 transitions. Second operand 13 states. [2020-10-21 21:30:09,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:09,332 INFO L93 Difference]: Finished difference Result 158 states and 378 transitions. [2020-10-21 21:30:09,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 21:30:09,333 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-21 21:30:09,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:09,335 INFO L225 Difference]: With dead ends: 158 [2020-10-21 21:30:09,335 INFO L226 Difference]: Without dead ends: 153 [2020-10-21 21:30:09,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-21 21:30:09,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-21 21:30:09,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 116. [2020-10-21 21:30:09,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-21 21:30:09,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 291 transitions. [2020-10-21 21:30:09,340 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 291 transitions. Word has length 12 [2020-10-21 21:30:09,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:09,341 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 291 transitions. [2020-10-21 21:30:09,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-21 21:30:09,341 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 291 transitions. [2020-10-21 21:30:09,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:30:09,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:09,342 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:09,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-21 21:30:09,554 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:09,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:09,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1682932755, now seen corresponding path program 16 times [2020-10-21 21:30:09,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:09,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917903912] [2020-10-21 21:30:09,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:09,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:09,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917903912] [2020-10-21 21:30:09,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772960780] [2020-10-21 21:30:09,622 INFO L93 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:30:09,680 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 21:30:09,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:09,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 21:30:09,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:09,784 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:30:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:09,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:09,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 21:30:09,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415970545] [2020-10-21 21:30:09,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-21 21:30:09,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:09,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-21 21:30:09,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:30:09,800 INFO L87 Difference]: Start difference. First operand 116 states and 291 transitions. Second operand 13 states. [2020-10-21 21:30:10,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:10,148 INFO L93 Difference]: Finished difference Result 185 states and 436 transitions. [2020-10-21 21:30:10,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-21 21:30:10,149 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-21 21:30:10,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:10,150 INFO L225 Difference]: With dead ends: 185 [2020-10-21 21:30:10,151 INFO L226 Difference]: Without dead ends: 177 [2020-10-21 21:30:10,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2020-10-21 21:30:10,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-21 21:30:10,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 115. [2020-10-21 21:30:10,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-21 21:30:10,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 286 transitions. [2020-10-21 21:30:10,156 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 286 transitions. Word has length 12 [2020-10-21 21:30:10,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:10,157 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 286 transitions. [2020-10-21 21:30:10,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-21 21:30:10,157 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 286 transitions. [2020-10-21 21:30:10,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:30:10,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:10,158 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:10,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-21 21:30:10,365 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:10,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:10,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1682903925, now seen corresponding path program 17 times [2020-10-21 21:30:10,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:10,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139360159] [2020-10-21 21:30:10,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:10,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:10,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139360159] [2020-10-21 21:30:10,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346341903] [2020-10-21 21:30:10,445 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:30:10,488 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 21:30:10,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:10,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 21:30:10,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:10,570 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:30:10,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:10,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:10,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 21:30:10,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750120764] [2020-10-21 21:30:10,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-21 21:30:10,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:10,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-21 21:30:10,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:30:10,580 INFO L87 Difference]: Start difference. First operand 115 states and 286 transitions. Second operand 13 states. [2020-10-21 21:30:10,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:10,994 INFO L93 Difference]: Finished difference Result 194 states and 459 transitions. [2020-10-21 21:30:10,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-21 21:30:10,994 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-21 21:30:10,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:10,996 INFO L225 Difference]: With dead ends: 194 [2020-10-21 21:30:10,996 INFO L226 Difference]: Without dead ends: 186 [2020-10-21 21:30:10,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-10-21 21:30:10,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-21 21:30:11,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 117. [2020-10-21 21:30:11,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-21 21:30:11,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 283 transitions. [2020-10-21 21:30:11,001 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 283 transitions. Word has length 12 [2020-10-21 21:30:11,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:11,001 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 283 transitions. [2020-10-21 21:30:11,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-21 21:30:11,001 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 283 transitions. [2020-10-21 21:30:11,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:30:11,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:11,002 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:11,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-21 21:30:11,203 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:11,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:11,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1682902964, now seen corresponding path program 18 times [2020-10-21 21:30:11,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:11,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192487947] [2020-10-21 21:30:11,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:11,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:11,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192487947] [2020-10-21 21:30:11,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193689416] [2020-10-21 21:30:11,278 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:30:11,322 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-21 21:30:11,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:11,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 21:30:11,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:11,401 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:30:11,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:11,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:11,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 21:30:11,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728908877] [2020-10-21 21:30:11,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-21 21:30:11,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:11,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-21 21:30:11,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:30:11,413 INFO L87 Difference]: Start difference. First operand 117 states and 283 transitions. Second operand 13 states. [2020-10-21 21:30:11,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:11,743 INFO L93 Difference]: Finished difference Result 172 states and 404 transitions. [2020-10-21 21:30:11,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-21 21:30:11,744 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-21 21:30:11,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:11,745 INFO L225 Difference]: With dead ends: 172 [2020-10-21 21:30:11,745 INFO L226 Difference]: Without dead ends: 167 [2020-10-21 21:30:11,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=434, Unknown=0, NotChecked=0, Total=650 [2020-10-21 21:30:11,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-21 21:30:11,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 114. [2020-10-21 21:30:11,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-21 21:30:11,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 268 transitions. [2020-10-21 21:30:11,751 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 268 transitions. Word has length 12 [2020-10-21 21:30:11,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:11,752 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 268 transitions. [2020-10-21 21:30:11,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-21 21:30:11,752 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 268 transitions. [2020-10-21 21:30:11,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:30:11,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:11,753 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:11,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:30:11,966 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:11,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:11,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1396877225, now seen corresponding path program 5 times [2020-10-21 21:30:11,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:11,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701138059] [2020-10-21 21:30:11,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:12,051 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:12,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701138059] [2020-10-21 21:30:12,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126386361] [2020-10-21 21:30:12,052 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:30:12,090 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-21 21:30:12,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:12,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:30:12,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:12,196 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:30:12,222 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:12,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:12,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 21:30:12,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769547579] [2020-10-21 21:30:12,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 21:30:12,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:12,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 21:30:12,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-21 21:30:12,225 INFO L87 Difference]: Start difference. First operand 114 states and 268 transitions. Second operand 16 states. [2020-10-21 21:30:12,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:12,376 INFO L93 Difference]: Finished difference Result 164 states and 382 transitions. [2020-10-21 21:30:12,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 21:30:12,377 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 12 [2020-10-21 21:30:12,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:12,378 INFO L225 Difference]: With dead ends: 164 [2020-10-21 21:30:12,378 INFO L226 Difference]: Without dead ends: 159 [2020-10-21 21:30:12,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-21 21:30:12,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-21 21:30:12,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-21 21:30:12,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-21 21:30:12,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 299 transitions. [2020-10-21 21:30:12,384 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 299 transitions. Word has length 12 [2020-10-21 21:30:12,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:12,384 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 299 transitions. [2020-10-21 21:30:12,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 21:30:12,384 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 299 transitions. [2020-10-21 21:30:12,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:30:12,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:12,385 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:12,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-21 21:30:12,586 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:12,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:12,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1150962717, now seen corresponding path program 5 times [2020-10-21 21:30:12,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:12,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570763664] [2020-10-21 21:30:12,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:12,659 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:12,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570763664] [2020-10-21 21:30:12,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952909170] [2020-10-21 21:30:12,660 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:30:12,703 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-21 21:30:12,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:12,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:30:12,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:12,817 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:30:12,833 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:12,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:12,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:30:12,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419524778] [2020-10-21 21:30:12,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:30:12,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:12,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:30:12,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:30:12,834 INFO L87 Difference]: Start difference. First operand 122 states and 299 transitions. Second operand 15 states. [2020-10-21 21:30:13,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:13,047 INFO L93 Difference]: Finished difference Result 173 states and 412 transitions. [2020-10-21 21:30:13,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 21:30:13,048 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-21 21:30:13,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:13,049 INFO L225 Difference]: With dead ends: 173 [2020-10-21 21:30:13,049 INFO L226 Difference]: Without dead ends: 167 [2020-10-21 21:30:13,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2020-10-21 21:30:13,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-21 21:30:13,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 132. [2020-10-21 21:30:13,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-21 21:30:13,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-21 21:30:13,055 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 12 [2020-10-21 21:30:13,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:13,056 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-21 21:30:13,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:30:13,056 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-21 21:30:13,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:30:13,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:13,057 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:13,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-21 21:30:13,267 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:13,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:13,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1518812168, now seen corresponding path program 19 times [2020-10-21 21:30:13,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:13,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442963221] [2020-10-21 21:30:13,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:13,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:13,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442963221] [2020-10-21 21:30:13,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030488696] [2020-10-21 21:30:13,345 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:30:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:13,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:30:13,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:13,492 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:30:13,501 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:13,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:13,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:30:13,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707574307] [2020-10-21 21:30:13,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:30:13,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:13,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:30:13,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:30:13,504 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 15 states. [2020-10-21 21:30:13,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:13,824 INFO L93 Difference]: Finished difference Result 183 states and 437 transitions. [2020-10-21 21:30:13,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 21:30:13,825 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:30:13,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:13,827 INFO L225 Difference]: With dead ends: 183 [2020-10-21 21:30:13,827 INFO L226 Difference]: Without dead ends: 178 [2020-10-21 21:30:13,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2020-10-21 21:30:13,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-21 21:30:13,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 131. [2020-10-21 21:30:13,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-21 21:30:13,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 327 transitions. [2020-10-21 21:30:13,831 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 327 transitions. Word has length 13 [2020-10-21 21:30:13,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:13,832 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 327 transitions. [2020-10-21 21:30:13,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:30:13,832 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 327 transitions. [2020-10-21 21:30:13,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:30:13,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:13,833 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:14,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:30:14,044 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:14,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:14,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1518783338, now seen corresponding path program 20 times [2020-10-21 21:30:14,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:14,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841967432] [2020-10-21 21:30:14,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:14,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:14,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841967432] [2020-10-21 21:30:14,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318292900] [2020-10-21 21:30:14,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:30:14,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 21:30:14,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:14,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:30:14,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:14,284 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:30:15,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:15,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:15,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 21:30:15,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369042010] [2020-10-21 21:30:15,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 21:30:15,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:15,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 21:30:15,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=166, Unknown=1, NotChecked=0, Total=240 [2020-10-21 21:30:15,357 INFO L87 Difference]: Start difference. First operand 131 states and 327 transitions. Second operand 16 states. [2020-10-21 21:30:19,548 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-21 21:30:21,795 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 31 [2020-10-21 21:30:36,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:36,692 INFO L93 Difference]: Finished difference Result 212 states and 502 transitions. [2020-10-21 21:30:36,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-21 21:30:36,697 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-10-21 21:30:36,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:36,698 INFO L225 Difference]: With dead ends: 212 [2020-10-21 21:30:36,698 INFO L226 Difference]: Without dead ends: 207 [2020-10-21 21:30:36,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=275, Invalid=593, Unknown=2, NotChecked=0, Total=870 [2020-10-21 21:30:36,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-21 21:30:36,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 131. [2020-10-21 21:30:36,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-21 21:30:36,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 329 transitions. [2020-10-21 21:30:36,704 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 329 transitions. Word has length 13 [2020-10-21 21:30:36,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:36,704 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 329 transitions. [2020-10-21 21:30:36,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 21:30:36,704 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 329 transitions. [2020-10-21 21:30:36,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:30:36,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:36,705 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:36,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:30:36,918 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:36,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:36,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1518782377, now seen corresponding path program 21 times [2020-10-21 21:30:36,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:36,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453454913] [2020-10-21 21:30:36,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:37,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:37,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453454913] [2020-10-21 21:30:37,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058791728] [2020-10-21 21:30:37,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:30:37,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 21:30:37,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:37,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:30:37,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:37,185 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:30:37,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:37,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:37,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:30:37,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819610927] [2020-10-21 21:30:37,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:30:37,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:37,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:30:37,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:30:37,200 INFO L87 Difference]: Start difference. First operand 131 states and 329 transitions. Second operand 15 states. [2020-10-21 21:30:37,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:37,539 INFO L93 Difference]: Finished difference Result 184 states and 441 transitions. [2020-10-21 21:30:37,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 21:30:37,539 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:30:37,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:37,541 INFO L225 Difference]: With dead ends: 184 [2020-10-21 21:30:37,541 INFO L226 Difference]: Without dead ends: 179 [2020-10-21 21:30:37,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2020-10-21 21:30:37,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-21 21:30:37,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 129. [2020-10-21 21:30:37,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-21 21:30:37,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 319 transitions. [2020-10-21 21:30:37,546 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 319 transitions. Word has length 13 [2020-10-21 21:30:37,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:37,546 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 319 transitions. [2020-10-21 21:30:37,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:30:37,546 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 319 transitions. [2020-10-21 21:30:37,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:30:37,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:37,547 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:37,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-10-21 21:30:37,758 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:37,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:37,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1517889608, now seen corresponding path program 22 times [2020-10-21 21:30:37,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:37,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638015657] [2020-10-21 21:30:37,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:37,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:37,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638015657] [2020-10-21 21:30:37,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340041565] [2020-10-21 21:30:37,836 INFO L93 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:30:37,890 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 21:30:37,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:37,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:30:37,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:38,020 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:30:38,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:38,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:38,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:30:38,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676904330] [2020-10-21 21:30:38,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:30:38,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:38,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:30:38,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:30:38,062 INFO L87 Difference]: Start difference. First operand 129 states and 319 transitions. Second operand 15 states. [2020-10-21 21:30:38,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:38,638 INFO L93 Difference]: Finished difference Result 207 states and 492 transitions. [2020-10-21 21:30:38,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-21 21:30:38,638 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:30:38,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:38,640 INFO L225 Difference]: With dead ends: 207 [2020-10-21 21:30:38,640 INFO L226 Difference]: Without dead ends: 202 [2020-10-21 21:30:38,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=289, Invalid=581, Unknown=0, NotChecked=0, Total=870 [2020-10-21 21:30:38,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-21 21:30:38,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 132. [2020-10-21 21:30:38,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-21 21:30:38,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-21 21:30:38,647 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 13 [2020-10-21 21:30:38,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:38,647 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-21 21:30:38,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:30:38,648 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-21 21:30:38,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:30:38,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:38,648 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:38,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:30:38,849 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:38,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:38,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1517888647, now seen corresponding path program 23 times [2020-10-21 21:30:38,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:38,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804446474] [2020-10-21 21:30:38,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:38,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:38,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804446474] [2020-10-21 21:30:38,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715734081] [2020-10-21 21:30:38,929 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:30:38,974 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 21:30:38,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:38,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:30:38,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:41,178 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:30:46,605 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 43 DAG size of output: 20 [2020-10-21 21:30:46,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:46,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:46,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 21:30:46,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525858843] [2020-10-21 21:30:46,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 21:30:46,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:46,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 21:30:46,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=168, Unknown=2, NotChecked=0, Total=240 [2020-10-21 21:30:46,609 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 16 states. [2020-10-21 21:30:50,726 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-10-21 21:30:54,952 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-10-21 21:31:07,742 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2020-10-21 21:31:32,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:32,424 INFO L93 Difference]: Finished difference Result 225 states and 541 transitions. [2020-10-21 21:31:32,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-21 21:31:32,457 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-10-21 21:31:32,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:32,458 INFO L225 Difference]: With dead ends: 225 [2020-10-21 21:31:32,458 INFO L226 Difference]: Without dead ends: 216 [2020-10-21 21:31:32,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 28.7s TimeCoverageRelationStatistics Valid=318, Invalid=732, Unknown=6, NotChecked=0, Total=1056 [2020-10-21 21:31:32,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-21 21:31:32,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 131. [2020-10-21 21:31:32,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-21 21:31:32,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 327 transitions. [2020-10-21 21:31:32,465 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 327 transitions. Word has length 13 [2020-10-21 21:31:32,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:32,465 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 327 transitions. [2020-10-21 21:31:32,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 21:31:32,466 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 327 transitions. [2020-10-21 21:31:32,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:31:32,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:32,466 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:32,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-21 21:31:32,676 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:31:32,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:32,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1517859817, now seen corresponding path program 24 times [2020-10-21 21:31:32,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:32,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122568930] [2020-10-21 21:31:32,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:32,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:32,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122568930] [2020-10-21 21:31:32,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319969886] [2020-10-21 21:31:32,769 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:31:32,825 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-21 21:31:32,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:31:32,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:31:32,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:31:33,001 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:31:33,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:33,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:31:33,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:31:33,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979727268] [2020-10-21 21:31:33,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:31:33,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:33,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:31:33,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:31:33,039 INFO L87 Difference]: Start difference. First operand 131 states and 327 transitions. Second operand 15 states. [2020-10-21 21:31:33,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:33,636 INFO L93 Difference]: Finished difference Result 204 states and 491 transitions. [2020-10-21 21:31:33,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-21 21:31:33,636 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:31:33,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:33,637 INFO L225 Difference]: With dead ends: 204 [2020-10-21 21:31:33,638 INFO L226 Difference]: Without dead ends: 199 [2020-10-21 21:31:33,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=262, Invalid=550, Unknown=0, NotChecked=0, Total=812 [2020-10-21 21:31:33,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-21 21:31:33,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 128. [2020-10-21 21:31:33,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-21 21:31:33,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 316 transitions. [2020-10-21 21:31:33,644 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 316 transitions. Word has length 13 [2020-10-21 21:31:33,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:33,645 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 316 transitions. [2020-10-21 21:31:33,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:31:33,645 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 316 transitions. [2020-10-21 21:31:33,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:31:33,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:33,646 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:33,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:31:33,855 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:31:33,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:33,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1490183978, now seen corresponding path program 25 times [2020-10-21 21:31:33,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:33,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160966621] [2020-10-21 21:31:33,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:33,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:33,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160966621] [2020-10-21 21:31:33,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811347643] [2020-10-21 21:31:33,939 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:31:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:33,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:31:33,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:31:34,091 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:31:34,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:34,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:31:34,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:31:34,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268290936] [2020-10-21 21:31:34,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:31:34,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:34,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:31:34,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:31:34,109 INFO L87 Difference]: Start difference. First operand 128 states and 316 transitions. Second operand 15 states. [2020-10-21 21:31:34,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:34,660 INFO L93 Difference]: Finished difference Result 203 states and 485 transitions. [2020-10-21 21:31:34,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-21 21:31:34,661 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:31:34,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:34,663 INFO L225 Difference]: With dead ends: 203 [2020-10-21 21:31:34,663 INFO L226 Difference]: Without dead ends: 198 [2020-10-21 21:31:34,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=323, Invalid=669, Unknown=0, NotChecked=0, Total=992 [2020-10-21 21:31:34,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-21 21:31:34,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 133. [2020-10-21 21:31:34,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-21 21:31:34,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 337 transitions. [2020-10-21 21:31:34,668 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 337 transitions. Word has length 13 [2020-10-21 21:31:34,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:34,668 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 337 transitions. [2020-10-21 21:31:34,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:31:34,668 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 337 transitions. [2020-10-21 21:31:34,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:31:34,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:34,669 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:34,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-21 21:31:34,881 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:31:34,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:34,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1490183017, now seen corresponding path program 26 times [2020-10-21 21:31:34,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:34,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702266559] [2020-10-21 21:31:34,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:34,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702266559] [2020-10-21 21:31:34,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145858994] [2020-10-21 21:31:34,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:31:35,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 21:31:35,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:31:35,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:31:35,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:31:35,123 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:31:35,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:35,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:31:35,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:31:35,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623361217] [2020-10-21 21:31:35,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:31:35,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:35,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:31:35,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:31:35,137 INFO L87 Difference]: Start difference. First operand 133 states and 337 transitions. Second operand 15 states. [2020-10-21 21:31:35,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:35,728 INFO L93 Difference]: Finished difference Result 204 states and 494 transitions. [2020-10-21 21:31:35,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-21 21:31:35,729 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:31:35,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:35,731 INFO L225 Difference]: With dead ends: 204 [2020-10-21 21:31:35,731 INFO L226 Difference]: Without dead ends: 199 [2020-10-21 21:31:35,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056 [2020-10-21 21:31:35,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-21 21:31:35,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 132. [2020-10-21 21:31:35,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-21 21:31:35,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-21 21:31:35,736 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 13 [2020-10-21 21:31:35,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:35,736 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-21 21:31:35,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:31:35,736 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-21 21:31:35,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:31:35,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:35,737 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:35,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-21 21:31:35,948 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:31:35,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:35,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1490154187, now seen corresponding path program 27 times [2020-10-21 21:31:35,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:35,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687257901] [2020-10-21 21:31:35,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:36,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:36,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687257901] [2020-10-21 21:31:36,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514911118] [2020-10-21 21:31:36,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:31:36,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-21 21:31:36,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:31:36,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:31:36,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:31:36,241 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:31:36,251 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:36,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:31:36,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:31:36,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481412137] [2020-10-21 21:31:36,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:31:36,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:36,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:31:36,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:31:36,253 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 15 states. [2020-10-21 21:31:36,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:36,834 INFO L93 Difference]: Finished difference Result 221 states and 533 transitions. [2020-10-21 21:31:36,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-21 21:31:36,834 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:31:36,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:36,836 INFO L225 Difference]: With dead ends: 221 [2020-10-21 21:31:36,836 INFO L226 Difference]: Without dead ends: 213 [2020-10-21 21:31:36,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 21:31:36,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-21 21:31:36,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 132. [2020-10-21 21:31:36,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-21 21:31:36,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 336 transitions. [2020-10-21 21:31:36,841 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 336 transitions. Word has length 13 [2020-10-21 21:31:36,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:36,842 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 336 transitions. [2020-10-21 21:31:36,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:31:36,842 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 336 transitions. [2020-10-21 21:31:36,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:31:36,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:36,842 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:37,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-10-21 21:31:37,050 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:31:37,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:37,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1490153226, now seen corresponding path program 28 times [2020-10-21 21:31:37,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:37,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552713861] [2020-10-21 21:31:37,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:37,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:37,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552713861] [2020-10-21 21:31:37,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200802219] [2020-10-21 21:31:37,131 INFO L93 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 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:31:37,172 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 21:31:37,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:31:37,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:31:37,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:31:37,269 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:31:37,278 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:37,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:31:37,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:31:37,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789899299] [2020-10-21 21:31:37,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:31:37,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:37,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:31:37,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:31:37,279 INFO L87 Difference]: Start difference. First operand 132 states and 336 transitions. Second operand 15 states. [2020-10-21 21:31:37,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:37,830 INFO L93 Difference]: Finished difference Result 211 states and 510 transitions. [2020-10-21 21:31:37,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-21 21:31:37,830 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:31:37,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:37,832 INFO L225 Difference]: With dead ends: 211 [2020-10-21 21:31:37,832 INFO L226 Difference]: Without dead ends: 203 [2020-10-21 21:31:37,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 21:31:37,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-21 21:31:37,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 132. [2020-10-21 21:31:37,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-21 21:31:37,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-21 21:31:37,837 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 13 [2020-10-21 21:31:37,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:37,837 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-21 21:31:37,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:31:37,837 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-21 21:31:37,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:31:37,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:37,838 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:38,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-21 21:31:38,040 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:31:38,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:38,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1489259496, now seen corresponding path program 29 times [2020-10-21 21:31:38,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:38,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123904943] [2020-10-21 21:31:38,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:38,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:38,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123904943] [2020-10-21 21:31:38,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994248051] [2020-10-21 21:31:38,123 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:31:38,185 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-21 21:31:38,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:31:38,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:31:38,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:31:38,339 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:31:38,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:38,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:31:38,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:31:38,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213150765] [2020-10-21 21:31:38,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:31:38,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:38,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:31:38,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:31:38,390 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 15 states. [2020-10-21 21:31:39,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:39,229 INFO L93 Difference]: Finished difference Result 210 states and 502 transitions. [2020-10-21 21:31:39,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-21 21:31:39,229 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:31:39,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:39,231 INFO L225 Difference]: With dead ends: 210 [2020-10-21 21:31:39,231 INFO L226 Difference]: Without dead ends: 205 [2020-10-21 21:31:39,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=345, Invalid=777, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 21:31:39,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-21 21:31:39,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 129. [2020-10-21 21:31:39,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-21 21:31:39,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 317 transitions. [2020-10-21 21:31:39,234 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 317 transitions. Word has length 13 [2020-10-21 21:31:39,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:39,234 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 317 transitions. [2020-10-21 21:31:39,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:31:39,235 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 317 transitions. [2020-10-21 21:31:39,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:31:39,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:39,235 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:39,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-21 21:31:39,436 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:31:39,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:39,437 INFO L82 PathProgramCache]: Analyzing trace with hash -631309448, now seen corresponding path program 30 times [2020-10-21 21:31:39,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:39,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004654791] [2020-10-21 21:31:39,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:39,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:39,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004654791] [2020-10-21 21:31:39,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70909520] [2020-10-21 21:31:39,513 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:31:39,560 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-21 21:31:39,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:31:39,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:31:39,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:31:39,660 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:31:39,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:39,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:31:39,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:31:39,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635869541] [2020-10-21 21:31:39,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:31:39,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:39,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:31:39,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:31:39,675 INFO L87 Difference]: Start difference. First operand 129 states and 317 transitions. Second operand 15 states. [2020-10-21 21:31:39,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:39,976 INFO L93 Difference]: Finished difference Result 189 states and 452 transitions. [2020-10-21 21:31:39,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 21:31:39,976 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:31:39,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:39,978 INFO L225 Difference]: With dead ends: 189 [2020-10-21 21:31:39,978 INFO L226 Difference]: Without dead ends: 184 [2020-10-21 21:31:39,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2020-10-21 21:31:39,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-21 21:31:39,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 135. [2020-10-21 21:31:39,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-21 21:31:39,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 341 transitions. [2020-10-21 21:31:39,983 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 341 transitions. Word has length 13 [2020-10-21 21:31:39,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:39,983 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 341 transitions. [2020-10-21 21:31:39,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:31:39,983 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 341 transitions. [2020-10-21 21:31:39,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:31:39,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:39,984 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:40,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2020-10-21 21:31:40,193 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:31:40,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:40,194 INFO L82 PathProgramCache]: Analyzing trace with hash -631308487, now seen corresponding path program 31 times [2020-10-21 21:31:40,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:40,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998124898] [2020-10-21 21:31:40,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:40,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:40,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998124898] [2020-10-21 21:31:40,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633573923] [2020-10-21 21:31:40,272 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:31:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:40,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:31:40,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:31:40,455 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:31:40,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:40,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:31:40,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:31:40,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721268689] [2020-10-21 21:31:40,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:31:40,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:40,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:31:40,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:31:40,469 INFO L87 Difference]: Start difference. First operand 135 states and 341 transitions. Second operand 15 states. [2020-10-21 21:31:41,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:41,019 INFO L93 Difference]: Finished difference Result 218 states and 521 transitions. [2020-10-21 21:31:41,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-21 21:31:41,020 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:31:41,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:41,021 INFO L225 Difference]: With dead ends: 218 [2020-10-21 21:31:41,021 INFO L226 Difference]: Without dead ends: 213 [2020-10-21 21:31:41,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=280, Invalid=650, Unknown=0, NotChecked=0, Total=930 [2020-10-21 21:31:41,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-21 21:31:41,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 134. [2020-10-21 21:31:41,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-21 21:31:41,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 336 transitions. [2020-10-21 21:31:41,026 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 336 transitions. Word has length 13 [2020-10-21 21:31:41,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:41,026 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 336 transitions. [2020-10-21 21:31:41,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:31:41,026 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 336 transitions. [2020-10-21 21:31:41,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:31:41,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:41,027 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:41,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-10-21 21:31:41,229 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:31:41,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:41,229 INFO L82 PathProgramCache]: Analyzing trace with hash -631279657, now seen corresponding path program 32 times [2020-10-21 21:31:41,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:41,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318102028] [2020-10-21 21:31:41,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:41,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:41,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318102028] [2020-10-21 21:31:41,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900434656] [2020-10-21 21:31:41,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:31:41,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 21:31:41,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:31:41,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:31:41,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:31:41,510 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:31:43,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:43,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:31:43,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 21:31:43,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394378321] [2020-10-21 21:31:43,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 21:31:43,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:43,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 21:31:43,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=171, Unknown=1, NotChecked=0, Total=240 [2020-10-21 21:31:43,626 INFO L87 Difference]: Start difference. First operand 134 states and 336 transitions. Second operand 16 states. [2020-10-21 21:31:46,117 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 26 [2020-10-21 21:33:11,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:33:11,788 INFO L93 Difference]: Finished difference Result 248 states and 590 transitions. [2020-10-21 21:33:11,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-21 21:33:11,793 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-10-21 21:33:11,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:33:11,795 INFO L225 Difference]: With dead ends: 248 [2020-10-21 21:33:11,795 INFO L226 Difference]: Without dead ends: 240 [2020-10-21 21:33:11,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 31.6s TimeCoverageRelationStatistics Valid=364, Invalid=882, Unknown=14, NotChecked=0, Total=1260 [2020-10-21 21:33:11,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-21 21:33:11,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 137. [2020-10-21 21:33:11,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-21 21:33:11,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 349 transitions. [2020-10-21 21:33:11,801 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 349 transitions. Word has length 13 [2020-10-21 21:33:11,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:33:11,801 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 349 transitions. [2020-10-21 21:33:11,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 21:33:11,801 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 349 transitions. [2020-10-21 21:33:11,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:33:11,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:33:11,802 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:33:12,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:33:12,013 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:33:12,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:33:12,013 INFO L82 PathProgramCache]: Analyzing trace with hash -631278696, now seen corresponding path program 33 times [2020-10-21 21:33:12,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:33:12,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734177590] [2020-10-21 21:33:12,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:33:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:33:12,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:12,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734177590] [2020-10-21 21:33:12,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98625107] [2020-10-21 21:33:12,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:33:12,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-21 21:33:12,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:33:12,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:33:12,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:33:12,334 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:33:12,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:12,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:33:12,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:33:12,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720528699] [2020-10-21 21:33:12,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:33:12,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:33:12,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:33:12,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:33:12,352 INFO L87 Difference]: Start difference. First operand 137 states and 349 transitions. Second operand 15 states. [2020-10-21 21:33:13,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:33:13,143 INFO L93 Difference]: Finished difference Result 234 states and 555 transitions. [2020-10-21 21:33:13,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-21 21:33:13,143 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:33:13,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:33:13,145 INFO L225 Difference]: With dead ends: 234 [2020-10-21 21:33:13,145 INFO L226 Difference]: Without dead ends: 226 [2020-10-21 21:33:13,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=384, Invalid=876, Unknown=0, NotChecked=0, Total=1260 [2020-10-21 21:33:13,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-21 21:33:13,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 135. [2020-10-21 21:33:13,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-21 21:33:13,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions. [2020-10-21 21:33:13,150 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13 [2020-10-21 21:33:13,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:33:13,151 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 339 transitions. [2020-10-21 21:33:13,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:33:13,151 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions. [2020-10-21 21:33:13,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:33:13,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:33:13,152 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:33:13,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-21 21:33:13,352 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:33:13,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:33:13,353 INFO L82 PathProgramCache]: Analyzing trace with hash -630385927, now seen corresponding path program 34 times [2020-10-21 21:33:13,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:33:13,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229268634] [2020-10-21 21:33:13,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:33:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:33:13,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:13,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229268634] [2020-10-21 21:33:13,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213330127] [2020-10-21 21:33:13,449 INFO L93 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 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:33:13,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 21:33:13,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:33:13,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:33:13,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:33:13,654 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:33:13,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:13,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:33:13,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:33:13,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158252492] [2020-10-21 21:33:13,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:33:13,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:33:13,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:33:13,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:33:13,677 INFO L87 Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 15 states. [2020-10-21 21:33:14,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:33:14,385 INFO L93 Difference]: Finished difference Result 238 states and 569 transitions. [2020-10-21 21:33:14,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-21 21:33:14,386 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:33:14,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:33:14,388 INFO L225 Difference]: With dead ends: 238 [2020-10-21 21:33:14,388 INFO L226 Difference]: Without dead ends: 230 [2020-10-21 21:33:14,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 21:33:14,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-21 21:33:14,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 135. [2020-10-21 21:33:14,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-21 21:33:14,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 341 transitions. [2020-10-21 21:33:14,393 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 341 transitions. Word has length 13 [2020-10-21 21:33:14,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:33:14,393 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 341 transitions. [2020-10-21 21:33:14,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:33:14,393 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 341 transitions. [2020-10-21 21:33:14,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:33:14,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:33:14,394 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:33:14,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:33:14,605 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:33:14,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:33:14,605 INFO L82 PathProgramCache]: Analyzing trace with hash -630384966, now seen corresponding path program 35 times [2020-10-21 21:33:14,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:33:14,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950835008] [2020-10-21 21:33:14,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:33:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:33:14,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:14,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950835008] [2020-10-21 21:33:14,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366187990] [2020-10-21 21:33:14,690 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:33:14,750 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-21 21:33:14,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:33:14,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:33:14,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:33:14,868 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:33:14,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:14,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:33:14,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:33:14,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112051803] [2020-10-21 21:33:14,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:33:14,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:33:14,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:33:14,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:33:14,882 INFO L87 Difference]: Start difference. First operand 135 states and 341 transitions. Second operand 15 states. [2020-10-21 21:33:15,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:33:15,510 INFO L93 Difference]: Finished difference Result 239 states and 572 transitions. [2020-10-21 21:33:15,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-21 21:33:15,511 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:33:15,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:33:15,513 INFO L225 Difference]: With dead ends: 239 [2020-10-21 21:33:15,513 INFO L226 Difference]: Without dead ends: 231 [2020-10-21 21:33:15,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 21:33:15,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-21 21:33:15,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 132. [2020-10-21 21:33:15,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-21 21:33:15,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 326 transitions. [2020-10-21 21:33:15,519 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 326 transitions. Word has length 13 [2020-10-21 21:33:15,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:33:15,521 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 326 transitions. [2020-10-21 21:33:15,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:33:15,521 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 326 transitions. [2020-10-21 21:33:15,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:33:15,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:33:15,522 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:33:15,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-21 21:33:15,735 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:33:15,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:33:15,735 INFO L82 PathProgramCache]: Analyzing trace with hash -630356136, now seen corresponding path program 36 times [2020-10-21 21:33:15,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:33:15,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030246774] [2020-10-21 21:33:15,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:33:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:33:15,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:15,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030246774] [2020-10-21 21:33:15,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514139911] [2020-10-21 21:33:15,821 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:33:15,863 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-21 21:33:15,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:33:15,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:33:15,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:33:15,982 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:33:16,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:16,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:33:16,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:33:16,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989983709] [2020-10-21 21:33:16,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:33:16,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:33:16,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:33:16,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:33:16,038 INFO L87 Difference]: Start difference. First operand 132 states and 326 transitions. Second operand 15 states. [2020-10-21 21:33:16,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:33:16,690 INFO L93 Difference]: Finished difference Result 228 states and 537 transitions. [2020-10-21 21:33:16,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-21 21:33:16,691 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:33:16,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:33:16,693 INFO L225 Difference]: With dead ends: 228 [2020-10-21 21:33:16,693 INFO L226 Difference]: Without dead ends: 220 [2020-10-21 21:33:16,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056 [2020-10-21 21:33:16,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-21 21:33:16,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 130. [2020-10-21 21:33:16,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-21 21:33:16,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 305 transitions. [2020-10-21 21:33:16,697 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 305 transitions. Word has length 13 [2020-10-21 21:33:16,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:33:16,697 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 305 transitions. [2020-10-21 21:33:16,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:33:16,698 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 305 transitions. [2020-10-21 21:33:16,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:33:16,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:33:16,698 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:33:16,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:33:16,900 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:33:16,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:33:16,900 INFO L82 PathProgramCache]: Analyzing trace with hash -353491858, now seen corresponding path program 6 times [2020-10-21 21:33:16,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:33:16,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385445486] [2020-10-21 21:33:16,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:33:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:33:17,006 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:17,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385445486] [2020-10-21 21:33:17,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523402990] [2020-10-21 21:33:17,007 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:33:17,051 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-21 21:33:17,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:33:17,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-21 21:33:17,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:33:17,212 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:33:17,242 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:17,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:33:17,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-21 21:33:17,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651373853] [2020-10-21 21:33:17,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-21 21:33:17,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:33:17,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-21 21:33:17,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-21 21:33:17,245 INFO L87 Difference]: Start difference. First operand 130 states and 305 transitions. Second operand 18 states. [2020-10-21 21:33:17,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:33:17,455 INFO L93 Difference]: Finished difference Result 185 states and 431 transitions. [2020-10-21 21:33:17,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-21 21:33:17,456 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 13 [2020-10-21 21:33:17,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:33:17,458 INFO L225 Difference]: With dead ends: 185 [2020-10-21 21:33:17,458 INFO L226 Difference]: Without dead ends: 180 [2020-10-21 21:33:17,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-21 21:33:17,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-21 21:33:17,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 139. [2020-10-21 21:33:17,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-21 21:33:17,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 341 transitions. [2020-10-21 21:33:17,461 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 341 transitions. Word has length 13 [2020-10-21 21:33:17,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:33:17,461 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 341 transitions. [2020-10-21 21:33:17,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-21 21:33:17,461 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 341 transitions. [2020-10-21 21:33:17,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:33:17,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:33:17,462 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:33:17,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-10-21 21:33:17,663 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:33:17,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:33:17,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1320134055, now seen corresponding path program 6 times [2020-10-21 21:33:17,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:33:17,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122388350] [2020-10-21 21:33:17,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:33:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:33:17,766 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:17,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122388350] [2020-10-21 21:33:17,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661234229] [2020-10-21 21:33:17,767 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:33:17,812 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-21 21:33:17,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:33:17,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-21 21:33:17,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:33:17,981 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:33:17,994 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:17,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:33:17,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-21 21:33:17,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183478888] [2020-10-21 21:33:17,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-21 21:33:17,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:33:17,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-21 21:33:17,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-21 21:33:17,997 INFO L87 Difference]: Start difference. First operand 139 states and 341 transitions. Second operand 17 states. [2020-10-21 21:33:18,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:33:18,270 INFO L93 Difference]: Finished difference Result 199 states and 474 transitions. [2020-10-21 21:33:18,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-21 21:33:18,271 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-21 21:33:18,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:33:18,272 INFO L225 Difference]: With dead ends: 199 [2020-10-21 21:33:18,273 INFO L226 Difference]: Without dead ends: 193 [2020-10-21 21:33:18,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2020-10-21 21:33:18,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-21 21:33:18,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 151. [2020-10-21 21:33:18,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-21 21:33:18,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 382 transitions. [2020-10-21 21:33:18,277 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 382 transitions. Word has length 13 [2020-10-21 21:33:18,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:33:18,278 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 382 transitions. [2020-10-21 21:33:18,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-21 21:33:18,278 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 382 transitions. [2020-10-21 21:33:18,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 21:33:18,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:33:18,279 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:33:18,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-10-21 21:33:18,485 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:33:18,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:33:18,485 INFO L82 PathProgramCache]: Analyzing trace with hash 161462414, now seen corresponding path program 37 times [2020-10-21 21:33:18,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:33:18,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921259362] [2020-10-21 21:33:18,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:33:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:33:18,583 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:18,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921259362] [2020-10-21 21:33:18,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38671569] [2020-10-21 21:33:18,584 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:33:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:33:18,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-21 21:33:18,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:33:18,783 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:33:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:18,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:33:18,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-21 21:33:18,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462691047] [2020-10-21 21:33:18,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-21 21:33:18,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:33:18,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-21 21:33:18,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-21 21:33:18,800 INFO L87 Difference]: Start difference. First operand 151 states and 382 transitions. Second operand 17 states. [2020-10-21 21:33:19,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:33:19,281 INFO L93 Difference]: Finished difference Result 214 states and 511 transitions. [2020-10-21 21:33:19,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-21 21:33:19,282 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-21 21:33:19,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:33:19,283 INFO L225 Difference]: With dead ends: 214 [2020-10-21 21:33:19,283 INFO L226 Difference]: Without dead ends: 209 [2020-10-21 21:33:19,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2020-10-21 21:33:19,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-21 21:33:19,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 150. [2020-10-21 21:33:19,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-21 21:33:19,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 377 transitions. [2020-10-21 21:33:19,287 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 377 transitions. Word has length 14 [2020-10-21 21:33:19,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:33:19,288 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 377 transitions. [2020-10-21 21:33:19,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-21 21:33:19,288 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 377 transitions. [2020-10-21 21:33:19,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 21:33:19,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:33:19,289 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:33:19,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-21 21:33:19,500 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:33:19,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:33:19,500 INFO L82 PathProgramCache]: Analyzing trace with hash 161491244, now seen corresponding path program 38 times [2020-10-21 21:33:19,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:33:19,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142657157] [2020-10-21 21:33:19,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:33:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:33:19,603 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:19,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142657157] [2020-10-21 21:33:19,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382793401] [2020-10-21 21:33:19,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:33:19,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 21:33:19,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:33:19,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-21 21:33:19,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:33:19,821 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:33:21,119 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:21,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:33:21,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-21 21:33:21,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488177934] [2020-10-21 21:33:21,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-21 21:33:21,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:33:21,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-21 21:33:21,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=213, Unknown=1, NotChecked=0, Total=306 [2020-10-21 21:33:21,120 INFO L87 Difference]: Start difference. First operand 150 states and 377 transitions. Second operand 18 states. [2020-10-21 21:33:25,304 WARN L193 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-21 21:33:33,682 WARN L193 SmtUtils]: Spent 3.80 s on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-10-21 21:33:47,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:33:47,684 INFO L93 Difference]: Finished difference Result 240 states and 570 transitions. [2020-10-21 21:33:47,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-21 21:33:47,718 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 14 [2020-10-21 21:33:47,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:33:47,719 INFO L225 Difference]: With dead ends: 240 [2020-10-21 21:33:47,720 INFO L226 Difference]: Without dead ends: 235 [2020-10-21 21:33:47,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=334, Invalid=720, Unknown=2, NotChecked=0, Total=1056 [2020-10-21 21:33:47,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-21 21:33:47,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 150. [2020-10-21 21:33:47,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-21 21:33:47,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 379 transitions. [2020-10-21 21:33:47,723 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 379 transitions. Word has length 14 [2020-10-21 21:33:47,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:33:47,724 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 379 transitions. [2020-10-21 21:33:47,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-21 21:33:47,724 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 379 transitions. [2020-10-21 21:33:47,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 21:33:47,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:33:47,725 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:33:47,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2020-10-21 21:33:47,925 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:33:47,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:33:47,926 INFO L82 PathProgramCache]: Analyzing trace with hash 161492205, now seen corresponding path program 39 times [2020-10-21 21:33:47,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:33:47,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768379622] [2020-10-21 21:33:47,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:33:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:33:48,026 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:48,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768379622] [2020-10-21 21:33:48,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697359114] [2020-10-21 21:33:48,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:33:48,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-21 21:33:48,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:33:48,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-21 21:33:48,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:33:48,235 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:33:48,253 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:48,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:33:48,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-21 21:33:48,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679899922] [2020-10-21 21:33:48,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-21 21:33:48,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:33:48,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-21 21:33:48,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-21 21:33:48,255 INFO L87 Difference]: Start difference. First operand 150 states and 379 transitions. Second operand 17 states. [2020-10-21 21:33:48,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:33:48,755 INFO L93 Difference]: Finished difference Result 220 states and 527 transitions. [2020-10-21 21:33:48,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-21 21:33:48,755 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-21 21:33:48,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:33:48,757 INFO L225 Difference]: With dead ends: 220 [2020-10-21 21:33:48,757 INFO L226 Difference]: Without dead ends: 215 [2020-10-21 21:33:48,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2020-10-21 21:33:48,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-21 21:33:48,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 148. [2020-10-21 21:33:48,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-21 21:33:48,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 369 transitions. [2020-10-21 21:33:48,762 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 369 transitions. Word has length 14 [2020-10-21 21:33:48,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:33:48,762 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 369 transitions. [2020-10-21 21:33:48,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-21 21:33:48,762 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 369 transitions. [2020-10-21 21:33:48,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 21:33:48,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:33:48,763 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:33:48,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:33:48,964 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:33:48,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:33:48,964 INFO L82 PathProgramCache]: Analyzing trace with hash 162384974, now seen corresponding path program 40 times [2020-10-21 21:33:48,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:33:48,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97845641] [2020-10-21 21:33:48,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:33:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:33:49,076 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:49,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97845641] [2020-10-21 21:33:49,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425190272] [2020-10-21 21:33:49,077 INFO L93 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 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:33:49,135 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 21:33:49,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:33:49,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-21 21:33:49,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:33:49,333 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:33:49,381 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:49,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:33:49,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-21 21:33:49,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880538518] [2020-10-21 21:33:49,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-21 21:33:49,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:33:49,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-21 21:33:49,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-21 21:33:49,384 INFO L87 Difference]: Start difference. First operand 148 states and 369 transitions. Second operand 17 states. [2020-10-21 21:33:50,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:33:50,404 INFO L93 Difference]: Finished difference Result 248 states and 590 transitions. [2020-10-21 21:33:50,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-21 21:33:50,405 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-21 21:33:50,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:33:50,407 INFO L225 Difference]: With dead ends: 248 [2020-10-21 21:33:50,407 INFO L226 Difference]: Without dead ends: 243 [2020-10-21 21:33:50,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=371, Invalid=751, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 21:33:50,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-21 21:33:50,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 151. [2020-10-21 21:33:50,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-21 21:33:50,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 382 transitions. [2020-10-21 21:33:50,412 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 382 transitions. Word has length 14 [2020-10-21 21:33:50,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:33:50,412 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 382 transitions. [2020-10-21 21:33:50,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-21 21:33:50,413 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 382 transitions. [2020-10-21 21:33:50,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 21:33:50,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:33:50,413 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:33:50,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:33:50,614 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:33:50,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:33:50,614 INFO L82 PathProgramCache]: Analyzing trace with hash 162385935, now seen corresponding path program 41 times [2020-10-21 21:33:50,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:33:50,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821545759] [2020-10-21 21:33:50,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:33:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:33:50,720 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:50,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821545759] [2020-10-21 21:33:50,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139627717] [2020-10-21 21:33:50,721 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:33:50,780 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-21 21:33:50,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:33:50,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-21 21:33:50,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:33:53,036 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:33:59,179 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 44 DAG size of output: 20 [2020-10-21 21:33:59,180 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:59,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:33:59,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-21 21:33:59,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545151311] [2020-10-21 21:33:59,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-21 21:33:59,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:33:59,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-21 21:33:59,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=215, Unknown=2, NotChecked=0, Total=306 [2020-10-21 21:33:59,182 INFO L87 Difference]: Start difference. First operand 151 states and 382 transitions. Second operand 18 states. [2020-10-21 21:34:03,324 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 44 DAG size of output: 40 Received shutdown request... [2020-10-21 21:34:05,550 WARN L210 SmtUtils]: Removed 1 from assertion stack [2020-10-21 21:34:05,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-21 21:34:05,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-10-21 21:34:05,752 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-21 21:34:05,756 WARN L235 ceAbstractionStarter]: Timeout [2020-10-21 21:34:05,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 09:34:05 BasicIcfg [2020-10-21 21:34:05,757 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 21:34:05,758 INFO L168 Benchmark]: Toolchain (without parser) took 279331.48 ms. Allocated memory was 145.2 MB in the beginning and 312.0 MB in the end (delta: 166.7 MB). Free memory was 100.2 MB in the beginning and 263.5 MB in the end (delta: -163.2 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-10-21 21:34:05,758 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-21 21:34:05,758 INFO L168 Benchmark]: CACSL2BoogieTranslator took 653.85 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 99.4 MB in the beginning and 156.9 MB in the end (delta: -57.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-10-21 21:34:05,759 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.18 ms. Allocated memory is still 201.3 MB. Free memory was 156.9 MB in the beginning and 154.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-21 21:34:05,759 INFO L168 Benchmark]: Boogie Preprocessor took 27.66 ms. Allocated memory is still 201.3 MB. Free memory was 154.8 MB in the beginning and 153.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-21 21:34:05,759 INFO L168 Benchmark]: RCFGBuilder took 457.29 ms. Allocated memory is still 201.3 MB. Free memory was 153.4 MB in the beginning and 131.0 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-10-21 21:34:05,760 INFO L168 Benchmark]: TraceAbstraction took 278130.77 ms. Allocated memory was 201.3 MB in the beginning and 312.0 MB in the end (delta: 110.6 MB). Free memory was 130.3 MB in the beginning and 263.5 MB in the end (delta: -133.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-21 21:34:05,762 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 653.85 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 99.4 MB in the beginning and 156.9 MB in the end (delta: -57.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.18 ms. Allocated memory is still 201.3 MB. Free memory was 156.9 MB in the beginning and 154.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.66 ms. Allocated memory is still 201.3 MB. Free memory was 154.8 MB in the beginning and 153.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 457.29 ms. Allocated memory is still 201.3 MB. Free memory was 153.4 MB in the beginning and 131.0 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 278130.77 ms. Allocated memory was 201.3 MB in the beginning and 312.0 MB in the end (delta: 110.6 MB). Free memory was 130.3 MB in the beginning and 263.5 MB in the end (delta: -133.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 866 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 12 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 19 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 67 PlacesBefore, 20 PlacesAfterwards, 66 TransitionsBefore, 16 TransitionsAfterwards, 1272 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 3 ChoiceCompositions, 65 TotalNumberOfCompositions, 1183 MoverChecksTotal - TimeoutResultAtElement [Line: 12]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 12). Cancelled while BasicCegarLoop was constructing difference of abstraction (151states) and FLOYD_HOARE automaton (currently 8 states, 18 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 58 for 2053ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 278.0s, OverallIterations: 54, TraceHistogramMax: 6, AutomataDifference: 230.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 699 SDtfs, 5990 SDslu, 4947 SDs, 0 SdLazy, 3577 SolverSat, 1044 SolverUnsat, 66 SolverUnknown, 0 SolverNotchecked, 126.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1460 GetRequests, 235 SyntacticMatches, 43 SemanticMatches, 1181 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6593 ImplicationChecksByTransitivity, 127.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=151occurred in iteration=49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 53 MinimizatonAttempts, 2705 StatesRemovedByMinimization, 53 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 31.5s InterpolantComputationTime, 1242 NumberOfCodeBlocks, 1242 NumberOfCodeBlocksAsserted, 160 NumberOfCheckSat, 1139 ConstructedInterpolants, 9 QuantifiedInterpolants, 109710 SizeOfPredicates, 49 NumberOfNonLiveVariables, 4852 ConjunctsInSsa, 463 ConjunctsInUnsatCore, 103 InterpolantComputations, 5 PerfectInterpolantSequences, 0/454 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown