/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/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread/fib_bench_longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 23:07:32,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 23:07:32,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 23:07:32,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 23:07:32,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 23:07:32,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 23:07:32,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 23:07:32,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 23:07:32,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 23:07:32,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 23:07:32,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 23:07:32,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 23:07:32,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 23:07:32,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 23:07:32,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 23:07:32,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 23:07:32,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 23:07:32,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 23:07:32,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 23:07:32,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 23:07:32,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 23:07:32,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 23:07:32,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 23:07:32,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 23:07:32,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-05 23:07:32,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 23:07:32,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 23:07:32,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 23:07:32,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 23:07:32,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 23:07:32,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 23:07:32,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 23:07:32,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 23:07:32,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 23:07:32,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 23:07:32,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 23:07:32,503 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-05 23:07:32,524 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 23:07:32,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 23:07:32,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 23:07:32,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 23:07:32,526 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 23:07:32,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 23:07:32,527 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 23:07:32,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 23:07:32,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 23:07:32,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 23:07:32,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 23:07:32,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 23:07:32,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 23:07:32,528 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 23:07:32,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 23:07:32,528 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 23:07:32,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 23:07:32,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 23:07:32,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 23:07:32,529 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 23:07:32,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 23:07:32,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:07:32,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 23:07:32,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-05 23:07:32,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 23:07:32,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 23:07:32,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 23:07:32,531 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-05 23:07:32,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 23:07:32,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 23:07:32,880 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 23:07:32,885 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 23:07:32,887 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 23:07:32,887 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 23:07:32,888 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longest-2.i [2020-10-05 23:07:32,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/402a25da6/b319755d550643f0b176cd4a17a99fb1/FLAG28cf5ca95 [2020-10-05 23:07:33,475 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 23:07:33,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-2.i [2020-10-05 23:07:33,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/402a25da6/b319755d550643f0b176cd4a17a99fb1/FLAG28cf5ca95 [2020-10-05 23:07:33,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/402a25da6/b319755d550643f0b176cd4a17a99fb1 [2020-10-05 23:07:33,803 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 23:07:33,805 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 23:07:33,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 23:07:33,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 23:07:33,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 23:07:33,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:07:33" (1/1) ... [2020-10-05 23:07:33,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eff520d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:33, skipping insertion in model container [2020-10-05 23:07:33,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:07:33" (1/1) ... [2020-10-05 23:07:33,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 23:07:33,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 23:07:34,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:07:34,390 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 23:07:34,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:07:34,499 INFO L208 MainTranslator]: Completed translation [2020-10-05 23:07:34,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:34 WrapperNode [2020-10-05 23:07:34,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 23:07:34,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 23:07:34,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 23:07:34,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 23:07:34,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:34" (1/1) ... [2020-10-05 23:07:34,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:34" (1/1) ... [2020-10-05 23:07:34,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 23:07:34,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 23:07:34,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 23:07:34,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 23:07:34,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:34" (1/1) ... [2020-10-05 23:07:34,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:34" (1/1) ... [2020-10-05 23:07:34,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:34" (1/1) ... [2020-10-05 23:07:34,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:34" (1/1) ... [2020-10-05 23:07:34,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:34" (1/1) ... [2020-10-05 23:07:34,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:34" (1/1) ... [2020-10-05 23:07:34,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:34" (1/1) ... [2020-10-05 23:07:34,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 23:07:34,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 23:07:34,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 23:07:34,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 23:07:34,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:34" (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 [2020-10-05 23:07:34,651 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-05 23:07:34,651 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-05 23:07:34,651 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-05 23:07:34,651 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-05 23:07:34,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 23:07:34,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-05 23:07:34,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 23:07:34,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 23:07:34,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-05 23:07:34,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 23:07:34,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 23:07:34,658 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 23:07:34,944 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 23:07:34,944 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-05 23:07:34,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:07:34 BoogieIcfgContainer [2020-10-05 23:07:34,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 23:07:34,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 23:07:34,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 23:07:34,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 23:07:34,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 11:07:33" (1/3) ... [2020-10-05 23:07:34,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4a69cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:07:34, skipping insertion in model container [2020-10-05 23:07:34,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:34" (2/3) ... [2020-10-05 23:07:34,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4a69cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:07:34, skipping insertion in model container [2020-10-05 23:07:34,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:07:34" (3/3) ... [2020-10-05 23:07:34,960 INFO L109 eAbstractionObserver]: Analyzing ICFG fib_bench_longest-2.i [2020-10-05 23:07:34,978 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 23:07:34,979 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-05 23:07:34,988 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 23:07:34,990 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 23:07:35,023 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,023 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,024 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,024 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,024 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,024 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,025 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,025 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,025 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,026 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,026 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,026 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,027 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,027 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,027 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,028 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,028 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,028 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,029 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,029 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,029 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,030 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,030 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,030 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,031 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,031 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,031 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,032 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,032 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,032 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,036 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,038 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,039 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,039 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,039 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,039 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,045 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,046 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,046 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,046 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,046 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,047 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:35,082 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-05 23:07:35,111 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:07:35,112 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:07:35,112 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:07:35,112 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:07:35,112 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:07:35,112 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:07:35,112 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:07:35,113 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:07:35,135 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 57 transitions, 124 flow [2020-10-05 23:07:35,137 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 57 transitions, 124 flow [2020-10-05 23:07:35,181 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-05 23:07:35,181 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 23:07:35,187 INFO L80 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 55 events. 5/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2020-10-05 23:07:35,190 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 57 transitions, 124 flow [2020-10-05 23:07:35,210 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-05 23:07:35,211 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 23:07:35,212 INFO L80 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 55 events. 5/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2020-10-05 23:07:35,214 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1032 [2020-10-05 23:07:35,215 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:07:36,285 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-05 23:07:36,389 INFO L206 etLargeBlockEncoding]: Checked pairs total: 988 [2020-10-05 23:07:36,389 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2020-10-05 23:07:36,393 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 15 transitions, 40 flow [2020-10-05 23:07:36,406 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-05 23:07:36,408 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-05 23:07:36,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-05 23:07:36,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:36,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-05 23:07:36,417 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:36,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:36,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1563716626, now seen corresponding path program 1 times [2020-10-05 23:07:36,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:36,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498184423] [2020-10-05 23:07:36,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:36,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:36,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498184423] [2020-10-05 23:07:36,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:07:36,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:07:36,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456588073] [2020-10-05 23:07:36,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:07:36,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:36,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:07:36,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:07:36,733 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-05 23:07:36,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:36,824 INFO L93 Difference]: Finished difference Result 83 states and 212 transitions. [2020-10-05 23:07:36,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:07:36,826 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-05 23:07:36,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:36,844 INFO L225 Difference]: With dead ends: 83 [2020-10-05 23:07:36,844 INFO L226 Difference]: Without dead ends: 54 [2020-10-05 23:07:36,846 INFO L675 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 [2020-10-05 23:07:36,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-05 23:07:36,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-10-05 23:07:36,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-05 23:07:36,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 120 transitions. [2020-10-05 23:07:36,906 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 120 transitions. Word has length 6 [2020-10-05 23:07:36,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:36,907 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 120 transitions. [2020-10-05 23:07:36,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:07:36,907 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 120 transitions. [2020-10-05 23:07:36,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 23:07:36,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:36,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:36,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 23:07:36,909 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:36,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:36,910 INFO L82 PathProgramCache]: Analyzing trace with hash 956938306, now seen corresponding path program 1 times [2020-10-05 23:07:36,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:36,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192358608] [2020-10-05 23:07:36,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:37,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:37,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192358608] [2020-10-05 23:07:37,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:07:37,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:07:37,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138521474] [2020-10-05 23:07:37,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:07:37,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:37,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:07:37,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:07:37,038 INFO L87 Difference]: Start difference. First operand 50 states and 120 transitions. Second operand 5 states. [2020-10-05 23:07:37,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:37,090 INFO L93 Difference]: Finished difference Result 80 states and 186 transitions. [2020-10-05 23:07:37,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 23:07:37,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-05 23:07:37,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:37,093 INFO L225 Difference]: With dead ends: 80 [2020-10-05 23:07:37,093 INFO L226 Difference]: Without dead ends: 75 [2020-10-05 23:07:37,094 INFO L675 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 [2020-10-05 23:07:37,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-05 23:07:37,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-10-05 23:07:37,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-05 23:07:37,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions. [2020-10-05 23:07:37,104 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 8 [2020-10-05 23:07:37,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:37,106 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 136 transitions. [2020-10-05 23:07:37,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:07:37,106 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions. [2020-10-05 23:07:37,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 23:07:37,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:37,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:37,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 23:07:37,107 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:37,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:37,108 INFO L82 PathProgramCache]: Analyzing trace with hash 507192011, now seen corresponding path program 1 times [2020-10-05 23:07:37,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:37,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941270022] [2020-10-05 23:07:37,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:37,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:37,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941270022] [2020-10-05 23:07:37,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:07:37,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:07:37,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813762932] [2020-10-05 23:07:37,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:07:37,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:37,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:07:37,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:07:37,173 INFO L87 Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 5 states. [2020-10-05 23:07:37,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:37,199 INFO L93 Difference]: Finished difference Result 73 states and 170 transitions. [2020-10-05 23:07:37,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:07:37,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-05 23:07:37,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:37,201 INFO L225 Difference]: With dead ends: 73 [2020-10-05 23:07:37,201 INFO L226 Difference]: Without dead ends: 70 [2020-10-05 23:07:37,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:07:37,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-05 23:07:37,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-10-05 23:07:37,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-05 23:07:37,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 152 transitions. [2020-10-05 23:07:37,211 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 152 transitions. Word has length 8 [2020-10-05 23:07:37,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:37,211 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 152 transitions. [2020-10-05 23:07:37,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:07:37,212 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 152 transitions. [2020-10-05 23:07:37,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 23:07:37,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:37,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:37,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 23:07:37,213 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:37,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:37,214 INFO L82 PathProgramCache]: Analyzing trace with hash 507214331, now seen corresponding path program 2 times [2020-10-05 23:07:37,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:37,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610134606] [2020-10-05 23:07:37,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:37,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:37,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610134606] [2020-10-05 23:07:37,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:07:37,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:07:37,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041567731] [2020-10-05 23:07:37,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:07:37,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:37,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:07:37,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:07:37,297 INFO L87 Difference]: Start difference. First operand 64 states and 152 transitions. Second operand 5 states. [2020-10-05 23:07:37,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:37,364 INFO L93 Difference]: Finished difference Result 86 states and 202 transitions. [2020-10-05 23:07:37,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 23:07:37,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-05 23:07:37,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:37,366 INFO L225 Difference]: With dead ends: 86 [2020-10-05 23:07:37,367 INFO L226 Difference]: Without dead ends: 80 [2020-10-05 23:07:37,367 INFO L675 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 [2020-10-05 23:07:37,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-05 23:07:37,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 66. [2020-10-05 23:07:37,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-05 23:07:37,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 157 transitions. [2020-10-05 23:07:37,376 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 157 transitions. Word has length 8 [2020-10-05 23:07:37,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:37,377 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 157 transitions. [2020-10-05 23:07:37,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:07:37,377 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 157 transitions. [2020-10-05 23:07:37,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 23:07:37,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:37,378 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:37,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 23:07:37,379 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:37,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:37,379 INFO L82 PathProgramCache]: Analyzing trace with hash -399661872, now seen corresponding path program 2 times [2020-10-05 23:07:37,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:37,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340498082] [2020-10-05 23:07:37,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:37,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340498082] [2020-10-05 23:07:37,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661874510] [2020-10-05 23:07:37,448 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 [2020-10-05 23:07:37,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:07:37,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:37,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-05 23:07:37,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:37,580 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:07:37,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:37,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:37,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2020-10-05 23:07:37,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143835656] [2020-10-05 23:07:37,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-05 23:07:37,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:37,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-05 23:07:37,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-05 23:07:37,607 INFO L87 Difference]: Start difference. First operand 66 states and 157 transitions. Second operand 10 states. [2020-10-05 23:07:37,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:37,686 INFO L93 Difference]: Finished difference Result 101 states and 235 transitions. [2020-10-05 23:07:37,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 23:07:37,686 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2020-10-05 23:07:37,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:37,688 INFO L225 Difference]: With dead ends: 101 [2020-10-05 23:07:37,688 INFO L226 Difference]: Without dead ends: 96 [2020-10-05 23:07:37,688 INFO L675 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 [2020-10-05 23:07:37,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-05 23:07:37,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2020-10-05 23:07:37,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-05 23:07:37,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 173 transitions. [2020-10-05 23:07:37,697 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 173 transitions. Word has length 9 [2020-10-05 23:07:37,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:37,697 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 173 transitions. [2020-10-05 23:07:37,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-05 23:07:37,697 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 173 transitions. [2020-10-05 23:07:37,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 23:07:37,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:37,699 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:37,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:37,913 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:37,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:37,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1456916488, now seen corresponding path program 3 times [2020-10-05 23:07:37,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:37,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837273154] [2020-10-05 23:07:37,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:37,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:37,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837273154] [2020-10-05 23:07:37,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640989815] [2020-10-05 23:07:37,975 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 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 [2020-10-05 23:07:38,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:07:38,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:38,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-05 23:07:38,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:38,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:38,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:38,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-05 23:07:38,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397836193] [2020-10-05 23:07:38,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-05 23:07:38,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:38,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-05 23:07:38,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-05 23:07:38,111 INFO L87 Difference]: Start difference. First operand 71 states and 173 transitions. Second operand 9 states. [2020-10-05 23:07:38,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:38,165 INFO L93 Difference]: Finished difference Result 88 states and 207 transitions. [2020-10-05 23:07:38,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 23:07:38,165 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-05 23:07:38,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:38,166 INFO L225 Difference]: With dead ends: 88 [2020-10-05 23:07:38,166 INFO L226 Difference]: Without dead ends: 85 [2020-10-05 23:07:38,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-05 23:07:38,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-05 23:07:38,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2020-10-05 23:07:38,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-05 23:07:38,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 183 transitions. [2020-10-05 23:07:38,174 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 183 transitions. Word has length 9 [2020-10-05 23:07:38,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:38,175 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 183 transitions. [2020-10-05 23:07:38,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-05 23:07:38,175 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 183 transitions. [2020-10-05 23:07:38,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 23:07:38,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:38,176 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:38,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:38,390 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:38,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:38,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1456224568, now seen corresponding path program 4 times [2020-10-05 23:07:38,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:38,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047819988] [2020-10-05 23:07:38,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:38,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047819988] [2020-10-05 23:07:38,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312319596] [2020-10-05 23:07:38,459 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 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 [2020-10-05 23:07:38,522 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:07:38,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:38,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-05 23:07:38,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:38,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:38,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-05 23:07:38,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064446879] [2020-10-05 23:07:38,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-05 23:07:38,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:38,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-05 23:07:38,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-05 23:07:38,590 INFO L87 Difference]: Start difference. First operand 76 states and 183 transitions. Second operand 9 states. [2020-10-05 23:07:38,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:38,667 INFO L93 Difference]: Finished difference Result 94 states and 221 transitions. [2020-10-05 23:07:38,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 23:07:38,668 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-05 23:07:38,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:38,669 INFO L225 Difference]: With dead ends: 94 [2020-10-05 23:07:38,670 INFO L226 Difference]: Without dead ends: 91 [2020-10-05 23:07:38,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-05 23:07:38,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-05 23:07:38,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 78. [2020-10-05 23:07:38,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-05 23:07:38,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 190 transitions. [2020-10-05 23:07:38,677 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 190 transitions. Word has length 9 [2020-10-05 23:07:38,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:38,678 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 190 transitions. [2020-10-05 23:07:38,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-05 23:07:38,678 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 190 transitions. [2020-10-05 23:07:38,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 23:07:38,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:38,679 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:38,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:38,894 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:38,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:38,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1456202248, now seen corresponding path program 5 times [2020-10-05 23:07:38,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:38,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369979282] [2020-10-05 23:07:38,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:38,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:38,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369979282] [2020-10-05 23:07:38,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639221411] [2020-10-05 23:07:38,949 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 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 [2020-10-05 23:07:38,987 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:07:38,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:38,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-05 23:07:38,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:39,041 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:07:39,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:39,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:39,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-05 23:07:39,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589797949] [2020-10-05 23:07:39,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-05 23:07:39,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:39,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-05 23:07:39,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-05 23:07:39,063 INFO L87 Difference]: Start difference. First operand 78 states and 190 transitions. Second operand 9 states. [2020-10-05 23:07:39,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:39,198 INFO L93 Difference]: Finished difference Result 103 states and 245 transitions. [2020-10-05 23:07:39,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 23:07:39,199 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-05 23:07:39,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:39,200 INFO L225 Difference]: With dead ends: 103 [2020-10-05 23:07:39,200 INFO L226 Difference]: Without dead ends: 97 [2020-10-05 23:07:39,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-10-05 23:07:39,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-05 23:07:39,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 79. [2020-10-05 23:07:39,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-05 23:07:39,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 194 transitions. [2020-10-05 23:07:39,220 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 194 transitions. Word has length 9 [2020-10-05 23:07:39,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:39,221 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 194 transitions. [2020-10-05 23:07:39,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-05 23:07:39,225 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 194 transitions. [2020-10-05 23:07:39,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:07:39,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:39,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:39,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:39,428 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:39,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:39,428 INFO L82 PathProgramCache]: Analyzing trace with hash 484301959, now seen corresponding path program 1 times [2020-10-05 23:07:39,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:39,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130388685] [2020-10-05 23:07:39,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:39,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:39,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130388685] [2020-10-05 23:07:39,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:07:39,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 23:07:39,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184016810] [2020-10-05 23:07:39,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 23:07:39,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:39,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 23:07:39,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:07:39,493 INFO L87 Difference]: Start difference. First operand 79 states and 194 transitions. Second operand 6 states. [2020-10-05 23:07:39,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:39,531 INFO L93 Difference]: Finished difference Result 100 states and 234 transitions. [2020-10-05 23:07:39,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 23:07:39,532 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-05 23:07:39,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:39,533 INFO L225 Difference]: With dead ends: 100 [2020-10-05 23:07:39,533 INFO L226 Difference]: Without dead ends: 98 [2020-10-05 23:07:39,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-05 23:07:39,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-05 23:07:39,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 83. [2020-10-05 23:07:39,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-05 23:07:39,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 200 transitions. [2020-10-05 23:07:39,540 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 200 transitions. Word has length 10 [2020-10-05 23:07:39,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:39,540 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 200 transitions. [2020-10-05 23:07:39,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 23:07:39,540 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 200 transitions. [2020-10-05 23:07:39,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:07:39,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:39,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:39,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-05 23:07:39,542 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:39,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:39,542 INFO L82 PathProgramCache]: Analyzing trace with hash 484324279, now seen corresponding path program 2 times [2020-10-05 23:07:39,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:39,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800726372] [2020-10-05 23:07:39,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:39,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:39,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800726372] [2020-10-05 23:07:39,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:07:39,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 23:07:39,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573045704] [2020-10-05 23:07:39,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 23:07:39,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:39,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 23:07:39,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:07:39,594 INFO L87 Difference]: Start difference. First operand 83 states and 200 transitions. Second operand 6 states. [2020-10-05 23:07:39,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:39,697 INFO L93 Difference]: Finished difference Result 105 states and 246 transitions. [2020-10-05 23:07:39,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 23:07:39,699 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-05 23:07:39,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:39,700 INFO L225 Difference]: With dead ends: 105 [2020-10-05 23:07:39,700 INFO L226 Difference]: Without dead ends: 100 [2020-10-05 23:07:39,701 INFO L675 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 [2020-10-05 23:07:39,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-05 23:07:39,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-10-05 23:07:39,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-05 23:07:39,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 198 transitions. [2020-10-05 23:07:39,717 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 198 transitions. Word has length 10 [2020-10-05 23:07:39,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:39,717 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 198 transitions. [2020-10-05 23:07:39,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 23:07:39,718 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 198 transitions. [2020-10-05 23:07:39,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:07:39,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:39,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:39,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-05 23:07:39,719 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:39,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:39,719 INFO L82 PathProgramCache]: Analyzing trace with hash 484353109, now seen corresponding path program 3 times [2020-10-05 23:07:39,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:39,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376662144] [2020-10-05 23:07:39,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:39,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:39,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376662144] [2020-10-05 23:07:39,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:07:39,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 23:07:39,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828860076] [2020-10-05 23:07:39,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 23:07:39,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:39,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 23:07:39,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:07:39,840 INFO L87 Difference]: Start difference. First operand 82 states and 198 transitions. Second operand 6 states. [2020-10-05 23:07:39,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:39,923 INFO L93 Difference]: Finished difference Result 105 states and 248 transitions. [2020-10-05 23:07:39,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 23:07:39,923 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-05 23:07:39,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:39,924 INFO L225 Difference]: With dead ends: 105 [2020-10-05 23:07:39,924 INFO L226 Difference]: Without dead ends: 100 [2020-10-05 23:07:39,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-05 23:07:39,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-05 23:07:39,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-10-05 23:07:39,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-05 23:07:39,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 194 transitions. [2020-10-05 23:07:39,933 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 194 transitions. Word has length 10 [2020-10-05 23:07:39,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:39,933 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 194 transitions. [2020-10-05 23:07:39,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 23:07:39,933 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 194 transitions. [2020-10-05 23:07:39,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:07:39,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:39,935 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:39,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-05 23:07:39,935 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:39,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:39,935 INFO L82 PathProgramCache]: Analyzing trace with hash 495405570, now seen corresponding path program 3 times [2020-10-05 23:07:39,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:39,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122794438] [2020-10-05 23:07:39,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:40,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:40,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122794438] [2020-10-05 23:07:40,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968812054] [2020-10-05 23:07:40,020 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 [2020-10-05 23:07:40,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:07:40,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:40,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:40,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:40,143 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:07:40,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:40,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:40,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-05 23:07:40,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869194727] [2020-10-05 23:07:40,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-05 23:07:40,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:40,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-05 23:07:40,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-05 23:07:40,170 INFO L87 Difference]: Start difference. First operand 82 states and 194 transitions. Second operand 12 states. [2020-10-05 23:07:40,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:40,257 INFO L93 Difference]: Finished difference Result 122 states and 284 transitions. [2020-10-05 23:07:40,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:07:40,258 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 10 [2020-10-05 23:07:40,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:40,260 INFO L225 Difference]: With dead ends: 122 [2020-10-05 23:07:40,260 INFO L226 Difference]: Without dead ends: 117 [2020-10-05 23:07:40,260 INFO L675 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 [2020-10-05 23:07:40,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-05 23:07:40,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-10-05 23:07:40,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-05 23:07:40,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 215 transitions. [2020-10-05 23:07:40,266 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 215 transitions. Word has length 10 [2020-10-05 23:07:40,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:40,267 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 215 transitions. [2020-10-05 23:07:40,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-05 23:07:40,267 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 215 transitions. [2020-10-05 23:07:40,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:07:40,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:40,268 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:40,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-05 23:07:40,480 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:40,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:40,481 INFO L82 PathProgramCache]: Analyzing trace with hash 2080229483, now seen corresponding path program 6 times [2020-10-05 23:07:40,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:40,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637867496] [2020-10-05 23:07:40,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:40,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:40,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637867496] [2020-10-05 23:07:40,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861252917] [2020-10-05 23:07:40,537 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 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 [2020-10-05 23:07:40,593 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:07:40,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:40,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:40,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:40,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:40,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:40,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:40,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683124919] [2020-10-05 23:07:40,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:40,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:40,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:40,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:40,670 INFO L87 Difference]: Start difference. First operand 88 states and 215 transitions. Second operand 11 states. [2020-10-05 23:07:40,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:40,735 INFO L93 Difference]: Finished difference Result 108 states and 255 transitions. [2020-10-05 23:07:40,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 23:07:40,736 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-05 23:07:40,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:40,737 INFO L225 Difference]: With dead ends: 108 [2020-10-05 23:07:40,737 INFO L226 Difference]: Without dead ends: 105 [2020-10-05 23:07:40,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-05 23:07:40,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-05 23:07:40,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2020-10-05 23:07:40,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-05 23:07:40,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 221 transitions. [2020-10-05 23:07:40,742 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 221 transitions. Word has length 10 [2020-10-05 23:07:40,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:40,742 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 221 transitions. [2020-10-05 23:07:40,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:40,742 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 221 transitions. [2020-10-05 23:07:40,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:07:40,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:40,743 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:40,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:40,955 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:40,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:40,956 INFO L82 PathProgramCache]: Analyzing trace with hash 2101679003, now seen corresponding path program 7 times [2020-10-05 23:07:40,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:40,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314910807] [2020-10-05 23:07:40,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:41,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:41,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314910807] [2020-10-05 23:07:41,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797140094] [2020-10-05 23:07:41,010 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 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 [2020-10-05 23:07:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:41,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:41,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:41,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:41,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:41,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:41,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588020107] [2020-10-05 23:07:41,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:41,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:41,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:41,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:41,144 INFO L87 Difference]: Start difference. First operand 91 states and 221 transitions. Second operand 11 states. [2020-10-05 23:07:41,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:41,260 INFO L93 Difference]: Finished difference Result 116 states and 270 transitions. [2020-10-05 23:07:41,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:07:41,261 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-05 23:07:41,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:41,262 INFO L225 Difference]: With dead ends: 116 [2020-10-05 23:07:41,262 INFO L226 Difference]: Without dead ends: 113 [2020-10-05 23:07:41,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:07:41,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-05 23:07:41,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 92. [2020-10-05 23:07:41,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-05 23:07:41,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 223 transitions. [2020-10-05 23:07:41,271 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 223 transitions. Word has length 10 [2020-10-05 23:07:41,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:41,271 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 223 transitions. [2020-10-05 23:07:41,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:41,271 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 223 transitions. [2020-10-05 23:07:41,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:07:41,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:41,272 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:41,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-05 23:07:41,484 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:41,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:41,485 INFO L82 PathProgramCache]: Analyzing trace with hash 2102370923, now seen corresponding path program 8 times [2020-10-05 23:07:41,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:41,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881900723] [2020-10-05 23:07:41,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:41,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:41,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881900723] [2020-10-05 23:07:41,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874390709] [2020-10-05 23:07:41,556 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 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 [2020-10-05 23:07:41,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:07:41,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:41,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:41,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:41,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:41,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:41,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:41,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134329791] [2020-10-05 23:07:41,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:41,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:41,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:41,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:41,703 INFO L87 Difference]: Start difference. First operand 92 states and 223 transitions. Second operand 11 states. [2020-10-05 23:07:41,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:41,823 INFO L93 Difference]: Finished difference Result 115 states and 270 transitions. [2020-10-05 23:07:41,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:07:41,823 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-05 23:07:41,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:41,824 INFO L225 Difference]: With dead ends: 115 [2020-10-05 23:07:41,824 INFO L226 Difference]: Without dead ends: 112 [2020-10-05 23:07:41,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-10-05 23:07:41,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-05 23:07:41,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94. [2020-10-05 23:07:41,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-05 23:07:41,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 230 transitions. [2020-10-05 23:07:41,829 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 230 transitions. Word has length 10 [2020-10-05 23:07:41,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:41,829 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 230 transitions. [2020-10-05 23:07:41,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:41,829 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 230 transitions. [2020-10-05 23:07:41,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:07:41,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:41,830 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:42,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-05 23:07:42,031 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:42,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:42,032 INFO L82 PathProgramCache]: Analyzing trace with hash 2102393243, now seen corresponding path program 9 times [2020-10-05 23:07:42,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:42,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637522274] [2020-10-05 23:07:42,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:42,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:42,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637522274] [2020-10-05 23:07:42,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540570923] [2020-10-05 23:07:42,093 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 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 [2020-10-05 23:07:42,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:07:42,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:42,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:42,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:42,205 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:07:42,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:42,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:42,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:42,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170502389] [2020-10-05 23:07:42,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:42,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:42,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:42,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:42,222 INFO L87 Difference]: Start difference. First operand 94 states and 230 transitions. Second operand 11 states. [2020-10-05 23:07:42,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:42,413 INFO L93 Difference]: Finished difference Result 124 states and 294 transitions. [2020-10-05 23:07:42,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:07:42,413 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-05 23:07:42,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:42,415 INFO L225 Difference]: With dead ends: 124 [2020-10-05 23:07:42,415 INFO L226 Difference]: Without dead ends: 118 [2020-10-05 23:07:42,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-10-05 23:07:42,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-05 23:07:42,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 94. [2020-10-05 23:07:42,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-05 23:07:42,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-05 23:07:42,421 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 10 [2020-10-05 23:07:42,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:42,421 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-05 23:07:42,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:42,422 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-05 23:07:42,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:42,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:42,423 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:42,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-05 23:07:42,636 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:42,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:42,637 INFO L82 PathProgramCache]: Analyzing trace with hash 2107902445, now seen corresponding path program 4 times [2020-10-05 23:07:42,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:42,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804657539] [2020-10-05 23:07:42,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:42,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:42,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804657539] [2020-10-05 23:07:42,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628455544] [2020-10-05 23:07:42,699 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 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 [2020-10-05 23:07:42,756 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:07:42,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:42,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:42,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:42,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:42,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:42,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:42,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953034284] [2020-10-05 23:07:42,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:42,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:42,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:42,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:42,839 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 11 states. [2020-10-05 23:07:42,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:42,874 INFO L93 Difference]: Finished difference Result 113 states and 270 transitions. [2020-10-05 23:07:42,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 23:07:42,875 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:42,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:42,876 INFO L225 Difference]: With dead ends: 113 [2020-10-05 23:07:42,876 INFO L226 Difference]: Without dead ends: 111 [2020-10-05 23:07:42,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:42,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-05 23:07:42,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 96. [2020-10-05 23:07:42,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-05 23:07:42,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 238 transitions. [2020-10-05 23:07:42,880 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 238 transitions. Word has length 11 [2020-10-05 23:07:42,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:42,881 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 238 transitions. [2020-10-05 23:07:42,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:42,881 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 238 transitions. [2020-10-05 23:07:42,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:42,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:42,881 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:43,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-05 23:07:43,091 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:43,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:43,092 INFO L82 PathProgramCache]: Analyzing trace with hash 2107903406, now seen corresponding path program 5 times [2020-10-05 23:07:43,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:43,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268666990] [2020-10-05 23:07:43,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:43,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:43,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268666990] [2020-10-05 23:07:43,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589966660] [2020-10-05 23:07:43,146 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 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 [2020-10-05 23:07:43,224 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:07:43,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:43,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:43,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:43,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:43,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:43,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:43,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813932677] [2020-10-05 23:07:43,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:43,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:43,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:43,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:43,287 INFO L87 Difference]: Start difference. First operand 96 states and 238 transitions. Second operand 11 states. [2020-10-05 23:07:43,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:43,349 INFO L93 Difference]: Finished difference Result 118 states and 280 transitions. [2020-10-05 23:07:43,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 23:07:43,349 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:43,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:43,350 INFO L225 Difference]: With dead ends: 118 [2020-10-05 23:07:43,351 INFO L226 Difference]: Without dead ends: 116 [2020-10-05 23:07:43,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-05 23:07:43,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-05 23:07:43,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 97. [2020-10-05 23:07:43,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-05 23:07:43,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 239 transitions. [2020-10-05 23:07:43,355 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 239 transitions. Word has length 11 [2020-10-05 23:07:43,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:43,355 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 239 transitions. [2020-10-05 23:07:43,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:43,355 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 239 transitions. [2020-10-05 23:07:43,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:43,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:43,356 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:43,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-05 23:07:43,567 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:43,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:43,567 INFO L82 PathProgramCache]: Analyzing trace with hash 2107932236, now seen corresponding path program 6 times [2020-10-05 23:07:43,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:43,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826255509] [2020-10-05 23:07:43,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:43,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:43,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826255509] [2020-10-05 23:07:43,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43536775] [2020-10-05 23:07:43,622 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 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 [2020-10-05 23:07:43,685 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:07:43,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:43,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:43,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:43,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:43,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:43,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:43,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314153306] [2020-10-05 23:07:43,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:43,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:43,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:43,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:43,755 INFO L87 Difference]: Start difference. First operand 97 states and 239 transitions. Second operand 11 states. [2020-10-05 23:07:43,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:43,860 INFO L93 Difference]: Finished difference Result 117 states and 278 transitions. [2020-10-05 23:07:43,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 23:07:43,860 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:43,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:43,861 INFO L225 Difference]: With dead ends: 117 [2020-10-05 23:07:43,862 INFO L226 Difference]: Without dead ends: 115 [2020-10-05 23:07:43,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-05 23:07:43,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-05 23:07:43,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 98. [2020-10-05 23:07:43,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-05 23:07:43,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 241 transitions. [2020-10-05 23:07:43,866 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 241 transitions. Word has length 11 [2020-10-05 23:07:43,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:43,866 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 241 transitions. [2020-10-05 23:07:43,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:43,866 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 241 transitions. [2020-10-05 23:07:43,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:43,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:43,867 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:44,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:44,068 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:44,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:44,069 INFO L82 PathProgramCache]: Analyzing trace with hash 2128458235, now seen corresponding path program 7 times [2020-10-05 23:07:44,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:44,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800582728] [2020-10-05 23:07:44,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:44,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:44,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800582728] [2020-10-05 23:07:44,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664662771] [2020-10-05 23:07:44,142 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 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 [2020-10-05 23:07:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:44,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:44,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:44,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:44,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:44,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:44,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562166037] [2020-10-05 23:07:44,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:44,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:44,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:44,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:44,251 INFO L87 Difference]: Start difference. First operand 98 states and 241 transitions. Second operand 11 states. [2020-10-05 23:07:44,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:44,308 INFO L93 Difference]: Finished difference Result 122 states and 288 transitions. [2020-10-05 23:07:44,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 23:07:44,309 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:44,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:44,310 INFO L225 Difference]: With dead ends: 122 [2020-10-05 23:07:44,310 INFO L226 Difference]: Without dead ends: 120 [2020-10-05 23:07:44,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-05 23:07:44,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-05 23:07:44,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 100. [2020-10-05 23:07:44,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-05 23:07:44,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 247 transitions. [2020-10-05 23:07:44,315 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 247 transitions. Word has length 11 [2020-10-05 23:07:44,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:44,316 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 247 transitions. [2020-10-05 23:07:44,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:44,316 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 247 transitions. [2020-10-05 23:07:44,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:44,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:44,317 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:44,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2020-10-05 23:07:44,529 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:44,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:44,529 INFO L82 PathProgramCache]: Analyzing trace with hash 2128459196, now seen corresponding path program 8 times [2020-10-05 23:07:44,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:44,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831752800] [2020-10-05 23:07:44,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:44,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831752800] [2020-10-05 23:07:44,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248946020] [2020-10-05 23:07:44,592 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 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 [2020-10-05 23:07:44,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:07:44,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:44,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:44,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:44,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:44,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:44,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:44,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958088016] [2020-10-05 23:07:44,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:44,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:44,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:44,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:44,709 INFO L87 Difference]: Start difference. First operand 100 states and 247 transitions. Second operand 11 states. [2020-10-05 23:07:44,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:44,782 INFO L93 Difference]: Finished difference Result 123 states and 290 transitions. [2020-10-05 23:07:44,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 23:07:44,782 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:44,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:44,783 INFO L225 Difference]: With dead ends: 123 [2020-10-05 23:07:44,783 INFO L226 Difference]: Without dead ends: 121 [2020-10-05 23:07:44,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:44,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-05 23:07:44,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 99. [2020-10-05 23:07:44,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-05 23:07:44,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 243 transitions. [2020-10-05 23:07:44,788 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 243 transitions. Word has length 11 [2020-10-05 23:07:44,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:44,788 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 243 transitions. [2020-10-05 23:07:44,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:44,788 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 243 transitions. [2020-10-05 23:07:44,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:44,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:44,789 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:45,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:45,001 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:45,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:45,001 INFO L82 PathProgramCache]: Analyzing trace with hash 2129121325, now seen corresponding path program 9 times [2020-10-05 23:07:45,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:45,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735398834] [2020-10-05 23:07:45,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:45,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:45,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735398834] [2020-10-05 23:07:45,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262870520] [2020-10-05 23:07:45,064 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 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 [2020-10-05 23:07:45,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:07:45,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:45,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:45,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:45,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:45,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:45,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:45,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318140462] [2020-10-05 23:07:45,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:45,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:45,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:45,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:45,199 INFO L87 Difference]: Start difference. First operand 99 states and 243 transitions. Second operand 11 states. [2020-10-05 23:07:45,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:45,264 INFO L93 Difference]: Finished difference Result 123 states and 287 transitions. [2020-10-05 23:07:45,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 23:07:45,264 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:45,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:45,265 INFO L225 Difference]: With dead ends: 123 [2020-10-05 23:07:45,265 INFO L226 Difference]: Without dead ends: 121 [2020-10-05 23:07:45,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:45,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-05 23:07:45,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 103. [2020-10-05 23:07:45,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-05 23:07:45,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 249 transitions. [2020-10-05 23:07:45,270 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 249 transitions. Word has length 11 [2020-10-05 23:07:45,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:45,270 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 249 transitions. [2020-10-05 23:07:45,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:45,270 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 249 transitions. [2020-10-05 23:07:45,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:45,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:45,271 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:45,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-05 23:07:45,480 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:45,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:45,481 INFO L82 PathProgramCache]: Analyzing trace with hash 2129143645, now seen corresponding path program 10 times [2020-10-05 23:07:45,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:45,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493464405] [2020-10-05 23:07:45,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:45,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:45,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493464405] [2020-10-05 23:07:45,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417365378] [2020-10-05 23:07:45,530 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 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 [2020-10-05 23:07:45,579 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:07:45,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:45,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:45,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:45,641 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:07:45,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:45,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:45,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:45,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487503304] [2020-10-05 23:07:45,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:45,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:45,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:45,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:45,681 INFO L87 Difference]: Start difference. First operand 103 states and 249 transitions. Second operand 11 states. [2020-10-05 23:07:45,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:45,878 INFO L93 Difference]: Finished difference Result 133 states and 314 transitions. [2020-10-05 23:07:45,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:07:45,878 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:45,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:45,879 INFO L225 Difference]: With dead ends: 133 [2020-10-05 23:07:45,879 INFO L226 Difference]: Without dead ends: 128 [2020-10-05 23:07:45,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2020-10-05 23:07:45,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-05 23:07:45,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 102. [2020-10-05 23:07:45,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-05 23:07:45,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 247 transitions. [2020-10-05 23:07:45,884 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 247 transitions. Word has length 11 [2020-10-05 23:07:45,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:45,884 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 247 transitions. [2020-10-05 23:07:45,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:45,885 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 247 transitions. [2020-10-05 23:07:45,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:45,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:45,887 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:46,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:46,099 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:46,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:46,100 INFO L82 PathProgramCache]: Analyzing trace with hash 2129151116, now seen corresponding path program 11 times [2020-10-05 23:07:46,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:46,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597714372] [2020-10-05 23:07:46,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:46,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:46,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597714372] [2020-10-05 23:07:46,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026410268] [2020-10-05 23:07:46,162 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 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 [2020-10-05 23:07:46,200 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:07:46,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:46,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:46,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:46,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:46,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:46,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:46,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518544544] [2020-10-05 23:07:46,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:46,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:46,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:46,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:46,269 INFO L87 Difference]: Start difference. First operand 102 states and 247 transitions. Second operand 11 states. [2020-10-05 23:07:46,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:46,403 INFO L93 Difference]: Finished difference Result 127 states and 298 transitions. [2020-10-05 23:07:46,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:07:46,403 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:46,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:46,405 INFO L225 Difference]: With dead ends: 127 [2020-10-05 23:07:46,405 INFO L226 Difference]: Without dead ends: 125 [2020-10-05 23:07:46,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-10-05 23:07:46,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-05 23:07:46,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 104. [2020-10-05 23:07:46,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-05 23:07:46,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 254 transitions. [2020-10-05 23:07:46,412 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 254 transitions. Word has length 11 [2020-10-05 23:07:46,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:46,412 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 254 transitions. [2020-10-05 23:07:46,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:46,412 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 254 transitions. [2020-10-05 23:07:46,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:46,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:46,413 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:46,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-05 23:07:46,622 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:46,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:46,622 INFO L82 PathProgramCache]: Analyzing trace with hash 2129172475, now seen corresponding path program 12 times [2020-10-05 23:07:46,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:46,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71161654] [2020-10-05 23:07:46,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:46,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:46,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71161654] [2020-10-05 23:07:46,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716596148] [2020-10-05 23:07:46,686 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 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 [2020-10-05 23:07:46,746 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:07:46,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:46,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:46,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:46,842 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:07:46,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:46,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:46,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:46,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214700711] [2020-10-05 23:07:46,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:46,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:46,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:46,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:46,854 INFO L87 Difference]: Start difference. First operand 104 states and 254 transitions. Second operand 11 states. [2020-10-05 23:07:47,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:47,101 INFO L93 Difference]: Finished difference Result 141 states and 334 transitions. [2020-10-05 23:07:47,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:07:47,101 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:47,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:47,102 INFO L225 Difference]: With dead ends: 141 [2020-10-05 23:07:47,103 INFO L226 Difference]: Without dead ends: 136 [2020-10-05 23:07:47,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:07:47,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-05 23:07:47,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 104. [2020-10-05 23:07:47,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-05 23:07:47,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 254 transitions. [2020-10-05 23:07:47,107 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 254 transitions. Word has length 11 [2020-10-05 23:07:47,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:47,107 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 254 transitions. [2020-10-05 23:07:47,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:47,107 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 254 transitions. [2020-10-05 23:07:47,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:47,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:47,108 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:47,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-05 23:07:47,309 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:47,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:47,310 INFO L82 PathProgramCache]: Analyzing trace with hash 2129173436, now seen corresponding path program 13 times [2020-10-05 23:07:47,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:47,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182679782] [2020-10-05 23:07:47,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:47,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:47,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182679782] [2020-10-05 23:07:47,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130979233] [2020-10-05 23:07:47,373 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 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 [2020-10-05 23:07:47,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:47,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:47,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:47,460 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:07:47,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:47,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:47,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:47,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114538764] [2020-10-05 23:07:47,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:47,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:47,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:47,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:47,476 INFO L87 Difference]: Start difference. First operand 104 states and 254 transitions. Second operand 11 states. [2020-10-05 23:07:47,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:47,657 INFO L93 Difference]: Finished difference Result 136 states and 319 transitions. [2020-10-05 23:07:47,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:07:47,657 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:47,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:47,658 INFO L225 Difference]: With dead ends: 136 [2020-10-05 23:07:47,659 INFO L226 Difference]: Without dead ends: 131 [2020-10-05 23:07:47,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2020-10-05 23:07:47,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-05 23:07:47,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 101. [2020-10-05 23:07:47,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-05 23:07:47,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 245 transitions. [2020-10-05 23:07:47,663 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 245 transitions. Word has length 11 [2020-10-05 23:07:47,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:47,663 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 245 transitions. [2020-10-05 23:07:47,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:47,663 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 245 transitions. [2020-10-05 23:07:47,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:47,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:47,664 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:47,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-05 23:07:47,876 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:47,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:47,876 INFO L82 PathProgramCache]: Analyzing trace with hash 2129381756, now seen corresponding path program 14 times [2020-10-05 23:07:47,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:47,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540822964] [2020-10-05 23:07:47,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:47,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:47,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540822964] [2020-10-05 23:07:47,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65404421] [2020-10-05 23:07:47,923 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 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 [2020-10-05 23:07:47,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:07:47,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:47,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:47,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:48,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:48,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:48,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:48,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76369566] [2020-10-05 23:07:48,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:48,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:48,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:48,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:48,044 INFO L87 Difference]: Start difference. First operand 101 states and 245 transitions. Second operand 11 states. [2020-10-05 23:07:48,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:48,163 INFO L93 Difference]: Finished difference Result 128 states and 297 transitions. [2020-10-05 23:07:48,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:07:48,164 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:48,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:48,165 INFO L225 Difference]: With dead ends: 128 [2020-10-05 23:07:48,165 INFO L226 Difference]: Without dead ends: 126 [2020-10-05 23:07:48,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-10-05 23:07:48,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-05 23:07:48,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 99. [2020-10-05 23:07:48,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-05 23:07:48,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 240 transitions. [2020-10-05 23:07:48,170 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 240 transitions. Word has length 11 [2020-10-05 23:07:48,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:48,170 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 240 transitions. [2020-10-05 23:07:48,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:48,171 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 240 transitions. [2020-10-05 23:07:48,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:48,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:48,171 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:48,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-05 23:07:48,382 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:48,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:48,382 INFO L82 PathProgramCache]: Analyzing trace with hash 2130044846, now seen corresponding path program 15 times [2020-10-05 23:07:48,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:48,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881094163] [2020-10-05 23:07:48,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:48,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:48,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881094163] [2020-10-05 23:07:48,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977215759] [2020-10-05 23:07:48,442 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 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 [2020-10-05 23:07:48,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:07:48,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:48,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:48,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:48,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:48,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:48,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:48,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825690753] [2020-10-05 23:07:48,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:48,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:48,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:48,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:48,557 INFO L87 Difference]: Start difference. First operand 99 states and 240 transitions. Second operand 11 states. [2020-10-05 23:07:48,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:48,774 INFO L93 Difference]: Finished difference Result 126 states and 293 transitions. [2020-10-05 23:07:48,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 23:07:48,775 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:48,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:48,776 INFO L225 Difference]: With dead ends: 126 [2020-10-05 23:07:48,776 INFO L226 Difference]: Without dead ends: 124 [2020-10-05 23:07:48,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-10-05 23:07:48,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-05 23:07:48,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 101. [2020-10-05 23:07:48,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-05 23:07:48,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2020-10-05 23:07:48,781 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 11 [2020-10-05 23:07:48,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:48,782 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2020-10-05 23:07:48,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:48,782 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2020-10-05 23:07:48,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:48,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:48,782 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:48,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-05 23:07:48,993 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:48,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:48,993 INFO L82 PathProgramCache]: Analyzing trace with hash 2130066205, now seen corresponding path program 16 times [2020-10-05 23:07:48,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:48,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808117052] [2020-10-05 23:07:48,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:49,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:49,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808117052] [2020-10-05 23:07:49,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672070283] [2020-10-05 23:07:49,050 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 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 [2020-10-05 23:07:49,097 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:07:49,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:49,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:49,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:49,154 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:07:49,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:49,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:49,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:49,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754522490] [2020-10-05 23:07:49,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:49,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:49,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:49,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:49,164 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 11 states. [2020-10-05 23:07:49,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:49,400 INFO L93 Difference]: Finished difference Result 136 states and 323 transitions. [2020-10-05 23:07:49,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 23:07:49,401 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:49,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:49,402 INFO L225 Difference]: With dead ends: 136 [2020-10-05 23:07:49,402 INFO L226 Difference]: Without dead ends: 131 [2020-10-05 23:07:49,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:07:49,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-05 23:07:49,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 101. [2020-10-05 23:07:49,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-05 23:07:49,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2020-10-05 23:07:49,406 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 11 [2020-10-05 23:07:49,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:49,407 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2020-10-05 23:07:49,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:49,407 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2020-10-05 23:07:49,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:49,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:49,408 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:49,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:49,619 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:49,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:49,619 INFO L82 PathProgramCache]: Analyzing trace with hash 2130067166, now seen corresponding path program 17 times [2020-10-05 23:07:49,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:49,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850728564] [2020-10-05 23:07:49,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:49,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:49,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850728564] [2020-10-05 23:07:49,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498861065] [2020-10-05 23:07:49,670 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 [2020-10-05 23:07:49,709 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:07:49,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:49,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:49,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:49,755 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:07:49,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:49,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:49,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:49,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48026862] [2020-10-05 23:07:49,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:49,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:49,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:49,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:49,764 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 11 states. [2020-10-05 23:07:50,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:50,057 INFO L93 Difference]: Finished difference Result 138 states and 325 transitions. [2020-10-05 23:07:50,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 23:07:50,058 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:50,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:50,059 INFO L225 Difference]: With dead ends: 138 [2020-10-05 23:07:50,059 INFO L226 Difference]: Without dead ends: 133 [2020-10-05 23:07:50,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2020-10-05 23:07:50,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-05 23:07:50,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 99. [2020-10-05 23:07:50,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-05 23:07:50,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 240 transitions. [2020-10-05 23:07:50,064 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 240 transitions. Word has length 11 [2020-10-05 23:07:50,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:50,065 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 240 transitions. [2020-10-05 23:07:50,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:50,065 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 240 transitions. [2020-10-05 23:07:50,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:50,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:50,066 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:50,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:50,279 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:50,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:50,279 INFO L82 PathProgramCache]: Analyzing trace with hash 2130095996, now seen corresponding path program 18 times [2020-10-05 23:07:50,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:50,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307401060] [2020-10-05 23:07:50,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:50,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:50,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307401060] [2020-10-05 23:07:50,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441380713] [2020-10-05 23:07:50,333 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 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 [2020-10-05 23:07:50,378 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:07:50,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:50,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:50,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:50,441 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:07:50,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:50,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:50,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:50,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214453889] [2020-10-05 23:07:50,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:50,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:50,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:50,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:50,453 INFO L87 Difference]: Start difference. First operand 99 states and 240 transitions. Second operand 11 states. [2020-10-05 23:07:50,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:50,699 INFO L93 Difference]: Finished difference Result 136 states and 319 transitions. [2020-10-05 23:07:50,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:07:50,700 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:50,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:50,702 INFO L225 Difference]: With dead ends: 136 [2020-10-05 23:07:50,702 INFO L226 Difference]: Without dead ends: 131 [2020-10-05 23:07:50,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-05 23:07:50,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-05 23:07:50,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 98. [2020-10-05 23:07:50,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-05 23:07:50,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2020-10-05 23:07:50,707 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 11 [2020-10-05 23:07:50,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:50,707 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2020-10-05 23:07:50,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:50,707 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2020-10-05 23:07:50,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:50,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:50,708 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:50,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:50,909 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:50,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:50,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1822274800, now seen corresponding path program 4 times [2020-10-05 23:07:50,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:50,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462633127] [2020-10-05 23:07:50,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:50,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462633127] [2020-10-05 23:07:50,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479902211] [2020-10-05 23:07:50,978 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 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 [2020-10-05 23:07:51,018 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:07:51,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:51,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:51,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:51,111 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:07:51,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:51,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:51,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-05 23:07:51,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032777144] [2020-10-05 23:07:51,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-05 23:07:51,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:51,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-05 23:07:51,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-05 23:07:51,137 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand 14 states. [2020-10-05 23:07:51,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:51,283 INFO L93 Difference]: Finished difference Result 143 states and 333 transitions. [2020-10-05 23:07:51,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:07:51,283 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 11 [2020-10-05 23:07:51,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:51,285 INFO L225 Difference]: With dead ends: 143 [2020-10-05 23:07:51,285 INFO L226 Difference]: Without dead ends: 138 [2020-10-05 23:07:51,285 INFO L675 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 [2020-10-05 23:07:51,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-05 23:07:51,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2020-10-05 23:07:51,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-05 23:07:51,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 257 transitions. [2020-10-05 23:07:51,290 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 257 transitions. Word has length 11 [2020-10-05 23:07:51,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:51,290 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 257 transitions. [2020-10-05 23:07:51,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-05 23:07:51,291 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 257 transitions. [2020-10-05 23:07:51,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:51,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:51,291 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:51,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-10-05 23:07:51,504 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:51,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:51,505 INFO L82 PathProgramCache]: Analyzing trace with hash 62604888, now seen corresponding path program 10 times [2020-10-05 23:07:51,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:51,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157432541] [2020-10-05 23:07:51,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:51,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:51,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157432541] [2020-10-05 23:07:51,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225186630] [2020-10-05 23:07:51,562 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 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 [2020-10-05 23:07:51,605 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:07:51,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:51,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:51,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:51,714 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:51,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:51,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:51,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345575352] [2020-10-05 23:07:51,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:51,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:51,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:51,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:51,715 INFO L87 Difference]: Start difference. First operand 105 states and 257 transitions. Second operand 13 states. [2020-10-05 23:07:51,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:51,832 INFO L93 Difference]: Finished difference Result 134 states and 315 transitions. [2020-10-05 23:07:51,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:07:51,833 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-05 23:07:51,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:51,834 INFO L225 Difference]: With dead ends: 134 [2020-10-05 23:07:51,834 INFO L226 Difference]: Without dead ends: 131 [2020-10-05 23:07:51,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:07:51,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-05 23:07:51,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 110. [2020-10-05 23:07:51,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-05 23:07:51,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 268 transitions. [2020-10-05 23:07:51,842 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 268 transitions. Word has length 11 [2020-10-05 23:07:51,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:51,842 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 268 transitions. [2020-10-05 23:07:51,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:51,842 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 268 transitions. [2020-10-05 23:07:51,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:51,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:51,843 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:52,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:52,054 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:52,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:52,054 INFO L82 PathProgramCache]: Analyzing trace with hash 727540008, now seen corresponding path program 11 times [2020-10-05 23:07:52,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:52,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163954614] [2020-10-05 23:07:52,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:52,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:52,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163954614] [2020-10-05 23:07:52,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221590309] [2020-10-05 23:07:52,116 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 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 [2020-10-05 23:07:52,173 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 23:07:52,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:52,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:52,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:52,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:52,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:52,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917510399] [2020-10-05 23:07:52,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:52,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:52,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:52,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:52,308 INFO L87 Difference]: Start difference. First operand 110 states and 268 transitions. Second operand 13 states. [2020-10-05 23:07:52,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:52,485 INFO L93 Difference]: Finished difference Result 145 states and 336 transitions. [2020-10-05 23:07:52,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:07:52,486 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-05 23:07:52,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:52,487 INFO L225 Difference]: With dead ends: 145 [2020-10-05 23:07:52,487 INFO L226 Difference]: Without dead ends: 142 [2020-10-05 23:07:52,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-05 23:07:52,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-05 23:07:52,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 110. [2020-10-05 23:07:52,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-05 23:07:52,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 268 transitions. [2020-10-05 23:07:52,492 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 268 transitions. Word has length 11 [2020-10-05 23:07:52,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:52,493 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 268 transitions. [2020-10-05 23:07:52,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:52,493 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 268 transitions. [2020-10-05 23:07:52,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:52,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:52,494 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:52,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-05 23:07:52,704 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:52,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:52,704 INFO L82 PathProgramCache]: Analyzing trace with hash 748989528, now seen corresponding path program 12 times [2020-10-05 23:07:52,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:52,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323308288] [2020-10-05 23:07:52,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:52,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:52,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323308288] [2020-10-05 23:07:52,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921598741] [2020-10-05 23:07:52,777 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 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 [2020-10-05 23:07:52,821 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 23:07:52,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:52,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:52,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:52,919 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:52,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:52,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:52,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859579591] [2020-10-05 23:07:52,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:52,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:52,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:52,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:52,921 INFO L87 Difference]: Start difference. First operand 110 states and 268 transitions. Second operand 13 states. [2020-10-05 23:07:53,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:53,120 INFO L93 Difference]: Finished difference Result 147 states and 342 transitions. [2020-10-05 23:07:53,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 23:07:53,121 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-05 23:07:53,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:53,122 INFO L225 Difference]: With dead ends: 147 [2020-10-05 23:07:53,122 INFO L226 Difference]: Without dead ends: 144 [2020-10-05 23:07:53,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:07:53,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-05 23:07:53,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 112. [2020-10-05 23:07:53,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-05 23:07:53,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 275 transitions. [2020-10-05 23:07:53,127 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 275 transitions. Word has length 11 [2020-10-05 23:07:53,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:53,127 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 275 transitions. [2020-10-05 23:07:53,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:53,127 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 275 transitions. [2020-10-05 23:07:53,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:53,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:53,128 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:53,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:53,339 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:53,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:53,339 INFO L82 PathProgramCache]: Analyzing trace with hash 749681448, now seen corresponding path program 13 times [2020-10-05 23:07:53,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:53,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35456841] [2020-10-05 23:07:53,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:53,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:53,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35456841] [2020-10-05 23:07:53,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232950874] [2020-10-05 23:07:53,393 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 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 [2020-10-05 23:07:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:53,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:53,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:53,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:53,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:53,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:53,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154576888] [2020-10-05 23:07:53,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:53,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:53,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:53,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:53,557 INFO L87 Difference]: Start difference. First operand 112 states and 275 transitions. Second operand 13 states. [2020-10-05 23:07:53,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:53,749 INFO L93 Difference]: Finished difference Result 143 states and 336 transitions. [2020-10-05 23:07:53,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 23:07:53,749 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-05 23:07:53,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:53,751 INFO L225 Difference]: With dead ends: 143 [2020-10-05 23:07:53,751 INFO L226 Difference]: Without dead ends: 140 [2020-10-05 23:07:53,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2020-10-05 23:07:53,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-05 23:07:53,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 114. [2020-10-05 23:07:53,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-05 23:07:53,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 282 transitions. [2020-10-05 23:07:53,755 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 282 transitions. Word has length 11 [2020-10-05 23:07:53,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:53,755 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 282 transitions. [2020-10-05 23:07:53,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:53,756 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 282 transitions. [2020-10-05 23:07:53,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:53,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:53,756 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:53,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-05 23:07:53,967 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:53,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:53,967 INFO L82 PathProgramCache]: Analyzing trace with hash 749703768, now seen corresponding path program 14 times [2020-10-05 23:07:53,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:53,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583175057] [2020-10-05 23:07:53,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:54,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583175057] [2020-10-05 23:07:54,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520417870] [2020-10-05 23:07:54,020 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 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 [2020-10-05 23:07:54,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:07:54,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:54,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:54,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:54,130 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:07:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:54,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:54,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:54,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869411156] [2020-10-05 23:07:54,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:54,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:54,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:54,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:54,146 INFO L87 Difference]: Start difference. First operand 114 states and 282 transitions. Second operand 13 states. [2020-10-05 23:07:54,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:54,394 INFO L93 Difference]: Finished difference Result 150 states and 356 transitions. [2020-10-05 23:07:54,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:07:54,395 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-05 23:07:54,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:54,396 INFO L225 Difference]: With dead ends: 150 [2020-10-05 23:07:54,396 INFO L226 Difference]: Without dead ends: 144 [2020-10-05 23:07:54,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-10-05 23:07:54,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-05 23:07:54,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 113. [2020-10-05 23:07:54,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-05 23:07:54,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 282 transitions. [2020-10-05 23:07:54,401 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 282 transitions. Word has length 11 [2020-10-05 23:07:54,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:54,401 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 282 transitions. [2020-10-05 23:07:54,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:54,401 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 282 transitions. [2020-10-05 23:07:54,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:07:54,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:54,402 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:54,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:54,613 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:54,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:54,613 INFO L82 PathProgramCache]: Analyzing trace with hash 920465749, now seen corresponding path program 19 times [2020-10-05 23:07:54,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:54,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415970564] [2020-10-05 23:07:54,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:54,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:54,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415970564] [2020-10-05 23:07:54,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796575804] [2020-10-05 23:07:54,671 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 [2020-10-05 23:07:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:54,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:54,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:54,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:54,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:54,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:54,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349284965] [2020-10-05 23:07:54,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:54,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:54,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:54,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:54,799 INFO L87 Difference]: Start difference. First operand 113 states and 282 transitions. Second operand 13 states. [2020-10-05 23:07:54,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:54,856 INFO L93 Difference]: Finished difference Result 138 states and 332 transitions. [2020-10-05 23:07:54,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 23:07:54,857 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:07:54,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:54,858 INFO L225 Difference]: With dead ends: 138 [2020-10-05 23:07:54,859 INFO L226 Difference]: Without dead ends: 136 [2020-10-05 23:07:54,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:54,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-05 23:07:54,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 117. [2020-10-05 23:07:54,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-05 23:07:54,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 294 transitions. [2020-10-05 23:07:54,863 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 294 transitions. Word has length 12 [2020-10-05 23:07:54,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:54,863 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 294 transitions. [2020-10-05 23:07:54,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:54,863 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 294 transitions. [2020-10-05 23:07:54,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:07:54,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:54,864 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:55,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-10-05 23:07:55,074 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:55,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:55,074 INFO L82 PathProgramCache]: Analyzing trace with hash 920466710, now seen corresponding path program 20 times [2020-10-05 23:07:55,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:55,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39047003] [2020-10-05 23:07:55,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:55,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:55,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39047003] [2020-10-05 23:07:55,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018413650] [2020-10-05 23:07:55,141 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 [2020-10-05 23:07:55,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:07:55,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:55,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:55,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:55,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:55,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:55,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:55,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090672472] [2020-10-05 23:07:55,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:55,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:55,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:55,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:55,322 INFO L87 Difference]: Start difference. First operand 117 states and 294 transitions. Second operand 13 states. [2020-10-05 23:07:55,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:55,411 INFO L93 Difference]: Finished difference Result 145 states and 346 transitions. [2020-10-05 23:07:55,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 23:07:55,412 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:07:55,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:55,413 INFO L225 Difference]: With dead ends: 145 [2020-10-05 23:07:55,413 INFO L226 Difference]: Without dead ends: 143 [2020-10-05 23:07:55,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-05 23:07:55,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-05 23:07:55,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 115. [2020-10-05 23:07:55,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-05 23:07:55,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 288 transitions. [2020-10-05 23:07:55,419 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 288 transitions. Word has length 12 [2020-10-05 23:07:55,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:55,420 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 288 transitions. [2020-10-05 23:07:55,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:55,420 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 288 transitions. [2020-10-05 23:07:55,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:07:55,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:55,421 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:55,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-05 23:07:55,633 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:55,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:55,634 INFO L82 PathProgramCache]: Analyzing trace with hash 920495540, now seen corresponding path program 21 times [2020-10-05 23:07:55,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:55,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994050874] [2020-10-05 23:07:55,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:55,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:55,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994050874] [2020-10-05 23:07:55,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361164230] [2020-10-05 23:07:55,733 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 [2020-10-05 23:07:55,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:07:55,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:55,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:55,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:55,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:55,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:55,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428724357] [2020-10-05 23:07:55,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:55,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:55,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:55,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:55,910 INFO L87 Difference]: Start difference. First operand 115 states and 288 transitions. Second operand 13 states. [2020-10-05 23:07:56,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:56,016 INFO L93 Difference]: Finished difference Result 150 states and 356 transitions. [2020-10-05 23:07:56,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:07:56,016 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:07:56,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:56,018 INFO L225 Difference]: With dead ends: 150 [2020-10-05 23:07:56,018 INFO L226 Difference]: Without dead ends: 148 [2020-10-05 23:07:56,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-05 23:07:56,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-05 23:07:56,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2020-10-05 23:07:56,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-05 23:07:56,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 289 transitions. [2020-10-05 23:07:56,041 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 289 transitions. Word has length 12 [2020-10-05 23:07:56,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:56,042 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 289 transitions. [2020-10-05 23:07:56,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:56,042 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 289 transitions. [2020-10-05 23:07:56,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:07:56,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:56,042 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:56,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-05 23:07:56,243 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:56,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:56,244 INFO L82 PathProgramCache]: Analyzing trace with hash 921389270, now seen corresponding path program 22 times [2020-10-05 23:07:56,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:56,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936674212] [2020-10-05 23:07:56,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:56,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:56,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936674212] [2020-10-05 23:07:56,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727496003] [2020-10-05 23:07:56,300 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 [2020-10-05 23:07:56,335 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:07:56,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:56,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:56,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:56,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:56,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:56,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552077202] [2020-10-05 23:07:56,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:56,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:56,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:56,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:56,426 INFO L87 Difference]: Start difference. First operand 116 states and 289 transitions. Second operand 13 states. [2020-10-05 23:07:56,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:56,590 INFO L93 Difference]: Finished difference Result 150 states and 356 transitions. [2020-10-05 23:07:56,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 23:07:56,590 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:07:56,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:56,592 INFO L225 Difference]: With dead ends: 150 [2020-10-05 23:07:56,592 INFO L226 Difference]: Without dead ends: 148 [2020-10-05 23:07:56,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2020-10-05 23:07:56,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-05 23:07:56,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 120. [2020-10-05 23:07:56,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 23:07:56,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 299 transitions. [2020-10-05 23:07:56,596 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 299 transitions. Word has length 12 [2020-10-05 23:07:56,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:56,596 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 299 transitions. [2020-10-05 23:07:56,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:56,597 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 299 transitions. [2020-10-05 23:07:56,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:07:56,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:56,597 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:56,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2020-10-05 23:07:56,808 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:56,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:56,808 INFO L82 PathProgramCache]: Analyzing trace with hash 921390231, now seen corresponding path program 23 times [2020-10-05 23:07:56,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:56,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917718124] [2020-10-05 23:07:56,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:56,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:56,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917718124] [2020-10-05 23:07:56,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525148025] [2020-10-05 23:07:56,865 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 [2020-10-05 23:07:56,902 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:07:56,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:56,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:56,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:57,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:57,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:57,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:57,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366572641] [2020-10-05 23:07:57,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:57,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:57,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:57,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:57,014 INFO L87 Difference]: Start difference. First operand 120 states and 299 transitions. Second operand 13 states. [2020-10-05 23:07:57,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:57,192 INFO L93 Difference]: Finished difference Result 147 states and 350 transitions. [2020-10-05 23:07:57,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 23:07:57,193 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:07:57,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:57,194 INFO L225 Difference]: With dead ends: 147 [2020-10-05 23:07:57,194 INFO L226 Difference]: Without dead ends: 145 [2020-10-05 23:07:57,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2020-10-05 23:07:57,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-05 23:07:57,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 118. [2020-10-05 23:07:57,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-05 23:07:57,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 293 transitions. [2020-10-05 23:07:57,200 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 293 transitions. Word has length 12 [2020-10-05 23:07:57,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:57,201 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 293 transitions. [2020-10-05 23:07:57,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:57,201 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 293 transitions. [2020-10-05 23:07:57,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:07:57,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:57,202 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:57,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:57,415 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:57,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:57,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1557695239, now seen corresponding path program 24 times [2020-10-05 23:07:57,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:57,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371207517] [2020-10-05 23:07:57,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:57,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:57,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371207517] [2020-10-05 23:07:57,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349186072] [2020-10-05 23:07:57,506 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 [2020-10-05 23:07:57,549 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:07:57,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:57,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:57,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:57,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:57,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:57,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007714626] [2020-10-05 23:07:57,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:57,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:57,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:57,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:57,644 INFO L87 Difference]: Start difference. First operand 118 states and 293 transitions. Second operand 13 states. [2020-10-05 23:07:57,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:57,716 INFO L93 Difference]: Finished difference Result 152 states and 360 transitions. [2020-10-05 23:07:57,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 23:07:57,716 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:07:57,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:57,718 INFO L225 Difference]: With dead ends: 152 [2020-10-05 23:07:57,718 INFO L226 Difference]: Without dead ends: 150 [2020-10-05 23:07:57,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-05 23:07:57,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-05 23:07:57,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 122. [2020-10-05 23:07:57,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-05 23:07:57,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 305 transitions. [2020-10-05 23:07:57,723 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 305 transitions. Word has length 12 [2020-10-05 23:07:57,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:57,723 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 305 transitions. [2020-10-05 23:07:57,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:57,723 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 305 transitions. [2020-10-05 23:07:57,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:07:57,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:57,724 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:57,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2020-10-05 23:07:57,935 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:57,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:57,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1557696200, now seen corresponding path program 25 times [2020-10-05 23:07:57,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:57,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867111641] [2020-10-05 23:07:57,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:58,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:58,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867111641] [2020-10-05 23:07:58,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224411596] [2020-10-05 23:07:58,013 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 [2020-10-05 23:07:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:58,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:58,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:58,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:58,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:58,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:58,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149162964] [2020-10-05 23:07:58,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:58,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:58,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:58,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:58,142 INFO L87 Difference]: Start difference. First operand 122 states and 305 transitions. Second operand 13 states. [2020-10-05 23:07:58,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:58,220 INFO L93 Difference]: Finished difference Result 153 states and 361 transitions. [2020-10-05 23:07:58,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:07:58,221 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:07:58,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:58,222 INFO L225 Difference]: With dead ends: 153 [2020-10-05 23:07:58,222 INFO L226 Difference]: Without dead ends: 151 [2020-10-05 23:07:58,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:07:58,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-05 23:07:58,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 120. [2020-10-05 23:07:58,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 23:07:58,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 299 transitions. [2020-10-05 23:07:58,227 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 299 transitions. Word has length 12 [2020-10-05 23:07:58,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:58,227 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 299 transitions. [2020-10-05 23:07:58,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:58,227 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 299 transitions. [2020-10-05 23:07:58,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:07:58,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:58,228 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:58,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-05 23:07:58,439 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:58,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:58,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1557725030, now seen corresponding path program 26 times [2020-10-05 23:07:58,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:58,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968321917] [2020-10-05 23:07:58,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:58,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:58,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968321917] [2020-10-05 23:07:58,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202383482] [2020-10-05 23:07:58,517 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 [2020-10-05 23:07:58,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:07:58,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:58,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:58,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:58,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:58,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:58,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:58,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124283527] [2020-10-05 23:07:58,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:58,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:58,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:58,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:58,665 INFO L87 Difference]: Start difference. First operand 120 states and 299 transitions. Second operand 13 states. [2020-10-05 23:07:58,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:58,787 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-05 23:07:58,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:07:58,790 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:07:58,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:58,792 INFO L225 Difference]: With dead ends: 156 [2020-10-05 23:07:58,792 INFO L226 Difference]: Without dead ends: 154 [2020-10-05 23:07:58,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:07:58,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-05 23:07:58,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 119. [2020-10-05 23:07:58,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-05 23:07:58,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 295 transitions. [2020-10-05 23:07:58,795 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 295 transitions. Word has length 12 [2020-10-05 23:07:58,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:58,796 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 295 transitions. [2020-10-05 23:07:58,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:58,796 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 295 transitions. [2020-10-05 23:07:58,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:07:58,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:58,796 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:58,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:58,997 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:58,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:58,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1578251029, now seen corresponding path program 27 times [2020-10-05 23:07:58,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:58,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420198278] [2020-10-05 23:07:58,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:59,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:59,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420198278] [2020-10-05 23:07:59,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62513049] [2020-10-05 23:07:59,069 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 [2020-10-05 23:07:59,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:07:59,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:59,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:59,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:59,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:59,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:59,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:59,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685119652] [2020-10-05 23:07:59,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:59,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:59,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:59,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:59,209 INFO L87 Difference]: Start difference. First operand 119 states and 295 transitions. Second operand 13 states. [2020-10-05 23:07:59,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:59,286 INFO L93 Difference]: Finished difference Result 148 states and 351 transitions. [2020-10-05 23:07:59,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:07:59,287 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:07:59,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:59,288 INFO L225 Difference]: With dead ends: 148 [2020-10-05 23:07:59,288 INFO L226 Difference]: Without dead ends: 146 [2020-10-05 23:07:59,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:07:59,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-05 23:07:59,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 121. [2020-10-05 23:07:59,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-05 23:07:59,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 301 transitions. [2020-10-05 23:07:59,295 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 301 transitions. Word has length 12 [2020-10-05 23:07:59,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:59,295 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 301 transitions. [2020-10-05 23:07:59,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:59,296 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 301 transitions. [2020-10-05 23:07:59,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:07:59,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:59,296 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:59,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-05 23:07:59,506 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:59,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:59,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1578251990, now seen corresponding path program 28 times [2020-10-05 23:07:59,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:59,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416031075] [2020-10-05 23:07:59,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:59,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:59,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416031075] [2020-10-05 23:07:59,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599521382] [2020-10-05 23:07:59,569 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 [2020-10-05 23:07:59,613 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:07:59,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:59,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:59,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:59,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:59,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:59,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:59,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820875165] [2020-10-05 23:07:59,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:59,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:59,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:59,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:59,723 INFO L87 Difference]: Start difference. First operand 121 states and 301 transitions. Second operand 13 states. [2020-10-05 23:07:59,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:59,828 INFO L93 Difference]: Finished difference Result 149 states and 352 transitions. [2020-10-05 23:07:59,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:07:59,828 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:07:59,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:59,829 INFO L225 Difference]: With dead ends: 149 [2020-10-05 23:07:59,830 INFO L226 Difference]: Without dead ends: 147 [2020-10-05 23:07:59,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-05 23:07:59,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-05 23:07:59,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 120. [2020-10-05 23:07:59,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 23:07:59,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 297 transitions. [2020-10-05 23:07:59,833 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 297 transitions. Word has length 12 [2020-10-05 23:07:59,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:59,834 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 297 transitions. [2020-10-05 23:07:59,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:59,834 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 297 transitions. [2020-10-05 23:07:59,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:07:59,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:59,835 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:00,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:00,044 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:00,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:00,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1578914119, now seen corresponding path program 29 times [2020-10-05 23:08:00,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:00,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414332107] [2020-10-05 23:08:00,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:00,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:00,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414332107] [2020-10-05 23:08:00,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904336454] [2020-10-05 23:08:00,114 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 [2020-10-05 23:08:00,152 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:00,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:00,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:00,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:00,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:00,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:00,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:00,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430171984] [2020-10-05 23:08:00,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:00,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:00,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:00,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:00,252 INFO L87 Difference]: Start difference. First operand 120 states and 297 transitions. Second operand 13 states. [2020-10-05 23:08:00,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:00,352 INFO L93 Difference]: Finished difference Result 149 states and 350 transitions. [2020-10-05 23:08:00,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:08:00,352 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:00,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:00,353 INFO L225 Difference]: With dead ends: 149 [2020-10-05 23:08:00,353 INFO L226 Difference]: Without dead ends: 147 [2020-10-05 23:08:00,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-10-05 23:08:00,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-05 23:08:00,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 124. [2020-10-05 23:08:00,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-05 23:08:00,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-05 23:08:00,357 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-05 23:08:00,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:00,357 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-05 23:08:00,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:00,357 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-05 23:08:00,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:00,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:00,358 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:00,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-10-05 23:08:00,565 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:00,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:00,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1578936439, now seen corresponding path program 30 times [2020-10-05 23:08:00,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:00,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135355092] [2020-10-05 23:08:00,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:00,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:00,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135355092] [2020-10-05 23:08:00,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957473782] [2020-10-05 23:08:00,624 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 [2020-10-05 23:08:00,662 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:08:00,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:00,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:00,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:00,760 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:08:00,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:00,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:00,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:00,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930909211] [2020-10-05 23:08:00,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:00,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:00,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:00,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:00,800 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-05 23:08:01,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:01,091 INFO L93 Difference]: Finished difference Result 164 states and 389 transitions. [2020-10-05 23:08:01,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:08:01,094 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:01,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:01,095 INFO L225 Difference]: With dead ends: 164 [2020-10-05 23:08:01,095 INFO L226 Difference]: Without dead ends: 159 [2020-10-05 23:08:01,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=307, Unknown=0, NotChecked=0, Total=462 [2020-10-05 23:08:01,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-05 23:08:01,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-05 23:08:01,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-05 23:08:01,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 296 transitions. [2020-10-05 23:08:01,100 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 296 transitions. Word has length 12 [2020-10-05 23:08:01,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:01,100 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 296 transitions. [2020-10-05 23:08:01,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:01,100 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 296 transitions. [2020-10-05 23:08:01,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:01,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:01,101 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:01,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-10-05 23:08:01,308 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:01,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:01,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1578943910, now seen corresponding path program 31 times [2020-10-05 23:08:01,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:01,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793014798] [2020-10-05 23:08:01,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:01,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793014798] [2020-10-05 23:08:01,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911189171] [2020-10-05 23:08:01,373 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 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 [2020-10-05 23:08:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:01,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:01,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:01,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:01,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:01,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:01,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638661156] [2020-10-05 23:08:01,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:01,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:01,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:01,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:01,528 INFO L87 Difference]: Start difference. First operand 122 states and 296 transitions. Second operand 13 states. [2020-10-05 23:08:01,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:01,724 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-05 23:08:01,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 23:08:01,724 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:01,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:01,726 INFO L225 Difference]: With dead ends: 156 [2020-10-05 23:08:01,726 INFO L226 Difference]: Without dead ends: 154 [2020-10-05 23:08:01,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-05 23:08:01,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-05 23:08:01,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 124. [2020-10-05 23:08:01,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-05 23:08:01,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-05 23:08:01,730 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-05 23:08:01,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:01,730 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-05 23:08:01,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:01,730 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-05 23:08:01,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:01,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:01,731 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:01,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-05 23:08:01,931 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:01,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:01,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1578965269, now seen corresponding path program 32 times [2020-10-05 23:08:01,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:01,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927448309] [2020-10-05 23:08:01,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:01,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:01,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927448309] [2020-10-05 23:08:01,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982365918] [2020-10-05 23:08:01,992 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 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 [2020-10-05 23:08:02,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:02,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:02,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:02,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:02,121 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:08:02,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:02,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:02,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:02,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319523871] [2020-10-05 23:08:02,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:02,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:02,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:02,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:02,157 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-05 23:08:02,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:02,533 INFO L93 Difference]: Finished difference Result 176 states and 416 transitions. [2020-10-05 23:08:02,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 23:08:02,534 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:02,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:02,536 INFO L225 Difference]: With dead ends: 176 [2020-10-05 23:08:02,536 INFO L226 Difference]: Without dead ends: 171 [2020-10-05 23:08:02,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2020-10-05 23:08:02,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-05 23:08:02,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 124. [2020-10-05 23:08:02,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-05 23:08:02,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-05 23:08:02,540 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-05 23:08:02,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:02,540 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-05 23:08:02,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:02,540 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-05 23:08:02,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:02,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:02,541 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:02,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2020-10-05 23:08:02,752 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:02,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:02,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1578966230, now seen corresponding path program 33 times [2020-10-05 23:08:02,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:02,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120090489] [2020-10-05 23:08:02,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:02,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:02,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120090489] [2020-10-05 23:08:02,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209704438] [2020-10-05 23:08:02,808 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 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 [2020-10-05 23:08:02,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:08:02,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:02,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:02,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:02,962 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:08:02,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:02,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:02,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:02,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551623861] [2020-10-05 23:08:02,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:02,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:02,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:02,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:02,994 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-05 23:08:03,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:03,370 INFO L93 Difference]: Finished difference Result 166 states and 393 transitions. [2020-10-05 23:08:03,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:08:03,371 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:03,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:03,373 INFO L225 Difference]: With dead ends: 166 [2020-10-05 23:08:03,373 INFO L226 Difference]: Without dead ends: 161 [2020-10-05 23:08:03,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-05 23:08:03,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-05 23:08:03,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 121. [2020-10-05 23:08:03,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-05 23:08:03,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 294 transitions. [2020-10-05 23:08:03,378 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 294 transitions. Word has length 12 [2020-10-05 23:08:03,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:03,378 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 294 transitions. [2020-10-05 23:08:03,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:03,378 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 294 transitions. [2020-10-05 23:08:03,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:03,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:03,379 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:03,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:03,589 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:03,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:03,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1579174550, now seen corresponding path program 34 times [2020-10-05 23:08:03,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:03,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427655657] [2020-10-05 23:08:03,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:03,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:03,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427655657] [2020-10-05 23:08:03,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411158558] [2020-10-05 23:08:03,679 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 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 [2020-10-05 23:08:03,721 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:08:03,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:03,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:03,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:03,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:03,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:03,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:03,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257937321] [2020-10-05 23:08:03,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:03,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:03,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:03,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:03,830 INFO L87 Difference]: Start difference. First operand 121 states and 294 transitions. Second operand 13 states. [2020-10-05 23:08:04,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:04,044 INFO L93 Difference]: Finished difference Result 163 states and 379 transitions. [2020-10-05 23:08:04,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:08:04,045 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:04,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:04,046 INFO L225 Difference]: With dead ends: 163 [2020-10-05 23:08:04,046 INFO L226 Difference]: Without dead ends: 161 [2020-10-05 23:08:04,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2020-10-05 23:08:04,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-05 23:08:04,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 123. [2020-10-05 23:08:04,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-05 23:08:04,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 301 transitions. [2020-10-05 23:08:04,050 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 301 transitions. Word has length 12 [2020-10-05 23:08:04,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:04,051 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 301 transitions. [2020-10-05 23:08:04,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:04,051 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 301 transitions. [2020-10-05 23:08:04,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:04,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:04,052 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:04,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2020-10-05 23:08:04,262 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:04,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:04,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1579837640, now seen corresponding path program 35 times [2020-10-05 23:08:04,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:04,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861846258] [2020-10-05 23:08:04,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:04,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:04,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861846258] [2020-10-05 23:08:04,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832826388] [2020-10-05 23:08:04,321 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 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 [2020-10-05 23:08:04,359 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:04,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:04,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:04,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:04,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:04,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:04,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:04,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209238607] [2020-10-05 23:08:04,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:04,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:04,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:04,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:04,451 INFO L87 Difference]: Start difference. First operand 123 states and 301 transitions. Second operand 13 states. [2020-10-05 23:08:04,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:04,730 INFO L93 Difference]: Finished difference Result 170 states and 399 transitions. [2020-10-05 23:08:04,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:08:04,730 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:04,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:04,731 INFO L225 Difference]: With dead ends: 170 [2020-10-05 23:08:04,731 INFO L226 Difference]: Without dead ends: 168 [2020-10-05 23:08:04,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:08:04,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-05 23:08:04,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 125. [2020-10-05 23:08:04,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-05 23:08:04,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 308 transitions. [2020-10-05 23:08:04,735 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 308 transitions. Word has length 12 [2020-10-05 23:08:04,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:04,736 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 308 transitions. [2020-10-05 23:08:04,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:04,736 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 308 transitions. [2020-10-05 23:08:04,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:04,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:04,736 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:04,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:04,946 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:04,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:04,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1579858999, now seen corresponding path program 36 times [2020-10-05 23:08:04,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:04,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567768985] [2020-10-05 23:08:04,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:05,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:05,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567768985] [2020-10-05 23:08:05,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933804920] [2020-10-05 23:08:05,002 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 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 [2020-10-05 23:08:05,050 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:08:05,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:05,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:05,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:05,169 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:08:05,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:05,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:05,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:05,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835418502] [2020-10-05 23:08:05,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:05,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:05,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:05,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:05,183 INFO L87 Difference]: Start difference. First operand 125 states and 308 transitions. Second operand 13 states. [2020-10-05 23:08:05,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:05,575 INFO L93 Difference]: Finished difference Result 177 states and 424 transitions. [2020-10-05 23:08:05,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 23:08:05,575 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:05,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:05,577 INFO L225 Difference]: With dead ends: 177 [2020-10-05 23:08:05,577 INFO L226 Difference]: Without dead ends: 172 [2020-10-05 23:08:05,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=231, Invalid=471, Unknown=0, NotChecked=0, Total=702 [2020-10-05 23:08:05,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-05 23:08:05,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 126. [2020-10-05 23:08:05,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-05 23:08:05,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 313 transitions. [2020-10-05 23:08:05,581 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 313 transitions. Word has length 12 [2020-10-05 23:08:05,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:05,581 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 313 transitions. [2020-10-05 23:08:05,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:05,581 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 313 transitions. [2020-10-05 23:08:05,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:05,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:05,582 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:05,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2020-10-05 23:08:05,790 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:05,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:05,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1579859960, now seen corresponding path program 37 times [2020-10-05 23:08:05,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:05,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870985833] [2020-10-05 23:08:05,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:05,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:05,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870985833] [2020-10-05 23:08:05,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141514735] [2020-10-05 23:08:05,849 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 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 [2020-10-05 23:08:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:05,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:05,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:05,960 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:08:05,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:05,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:05,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:05,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107322273] [2020-10-05 23:08:05,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:05,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:05,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:05,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:05,979 INFO L87 Difference]: Start difference. First operand 126 states and 313 transitions. Second operand 13 states. [2020-10-05 23:08:06,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:06,373 INFO L93 Difference]: Finished difference Result 190 states and 454 transitions. [2020-10-05 23:08:06,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 23:08:06,373 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:06,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:06,375 INFO L225 Difference]: With dead ends: 190 [2020-10-05 23:08:06,375 INFO L226 Difference]: Without dead ends: 182 [2020-10-05 23:08:06,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=239, Invalid=517, Unknown=0, NotChecked=0, Total=756 [2020-10-05 23:08:06,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-05 23:08:06,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 121. [2020-10-05 23:08:06,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-05 23:08:06,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 297 transitions. [2020-10-05 23:08:06,380 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 297 transitions. Word has length 12 [2020-10-05 23:08:06,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:06,380 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 297 transitions. [2020-10-05 23:08:06,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:06,380 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 297 transitions. [2020-10-05 23:08:06,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:06,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:06,381 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:06,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-05 23:08:06,592 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:06,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:06,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1579888790, now seen corresponding path program 38 times [2020-10-05 23:08:06,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:06,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41925565] [2020-10-05 23:08:06,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:06,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:06,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41925565] [2020-10-05 23:08:06,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742426488] [2020-10-05 23:08:06,658 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 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:06,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:06,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:06,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:06,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:06,777 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:08:06,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:06,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:06,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:06,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006856420] [2020-10-05 23:08:06,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:06,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:06,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:06,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:06,788 INFO L87 Difference]: Start difference. First operand 121 states and 297 transitions. Second operand 13 states. [2020-10-05 23:08:07,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:07,168 INFO L93 Difference]: Finished difference Result 180 states and 427 transitions. [2020-10-05 23:08:07,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 23:08:07,169 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:07,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:07,170 INFO L225 Difference]: With dead ends: 180 [2020-10-05 23:08:07,171 INFO L226 Difference]: Without dead ends: 175 [2020-10-05 23:08:07,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=208, Invalid=442, Unknown=0, NotChecked=0, Total=650 [2020-10-05 23:08:07,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-05 23:08:07,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 120. [2020-10-05 23:08:07,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 23:08:07,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 292 transitions. [2020-10-05 23:08:07,174 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 292 transitions. Word has length 12 [2020-10-05 23:08:07,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:07,175 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 292 transitions. [2020-10-05 23:08:07,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:07,175 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 292 transitions. [2020-10-05 23:08:07,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:07,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:07,175 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:07,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:07,378 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:07,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:07,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1586324390, now seen corresponding path program 39 times [2020-10-05 23:08:07,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:07,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102375374] [2020-10-05 23:08:07,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:07,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:07,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102375374] [2020-10-05 23:08:07,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437712927] [2020-10-05 23:08:07,438 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 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:07,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 23:08:07,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:07,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:07,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:07,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:07,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:07,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:07,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897612583] [2020-10-05 23:08:07,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:07,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:07,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:07,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:07,589 INFO L87 Difference]: Start difference. First operand 120 states and 292 transitions. Second operand 13 states. [2020-10-05 23:08:07,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:07,793 INFO L93 Difference]: Finished difference Result 164 states and 379 transitions. [2020-10-05 23:08:07,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:08:07,794 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:07,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:07,796 INFO L225 Difference]: With dead ends: 164 [2020-10-05 23:08:07,796 INFO L226 Difference]: Without dead ends: 162 [2020-10-05 23:08:07,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:08:07,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-05 23:08:07,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 121. [2020-10-05 23:08:07,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-05 23:08:07,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 295 transitions. [2020-10-05 23:08:07,801 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 295 transitions. Word has length 12 [2020-10-05 23:08:07,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:07,801 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 295 transitions. [2020-10-05 23:08:07,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:07,801 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 295 transitions. [2020-10-05 23:08:07,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:07,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:07,802 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:08,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-05 23:08:08,012 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:08,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:08,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1586325351, now seen corresponding path program 40 times [2020-10-05 23:08:08,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:08,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775242482] [2020-10-05 23:08:08,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:08,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:08,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775242482] [2020-10-05 23:08:08,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862658446] [2020-10-05 23:08:08,068 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 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:08,112 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:08:08,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:08,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:08,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:08,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:08,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:08,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:08,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079836465] [2020-10-05 23:08:08,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:08,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:08,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:08,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:08,233 INFO L87 Difference]: Start difference. First operand 121 states and 295 transitions. Second operand 13 states. [2020-10-05 23:08:08,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:08,437 INFO L93 Difference]: Finished difference Result 159 states and 368 transitions. [2020-10-05 23:08:08,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 23:08:08,437 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:08,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:08,439 INFO L225 Difference]: With dead ends: 159 [2020-10-05 23:08:08,439 INFO L226 Difference]: Without dead ends: 157 [2020-10-05 23:08:08,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2020-10-05 23:08:08,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-05 23:08:08,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 118. [2020-10-05 23:08:08,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-05 23:08:08,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 287 transitions. [2020-10-05 23:08:08,443 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 287 transitions. Word has length 12 [2020-10-05 23:08:08,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:08,444 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 287 transitions. [2020-10-05 23:08:08,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:08,445 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 287 transitions. [2020-10-05 23:08:08,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:08,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:08,445 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:08,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-10-05 23:08:08,655 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:08,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:08,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1606880180, now seen corresponding path program 41 times [2020-10-05 23:08:08,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:08,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647933857] [2020-10-05 23:08:08,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:08,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:08,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647933857] [2020-10-05 23:08:08,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351698347] [2020-10-05 23:08:08,712 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 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:08,756 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 23:08:08,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:08,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:08,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:08,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:08,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:08,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841180098] [2020-10-05 23:08:08,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:08,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:08,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:08,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:08,854 INFO L87 Difference]: Start difference. First operand 118 states and 287 transitions. Second operand 13 states. [2020-10-05 23:08:09,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:09,226 INFO L93 Difference]: Finished difference Result 175 states and 403 transitions. [2020-10-05 23:08:09,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 23:08:09,227 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:09,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:09,229 INFO L225 Difference]: With dead ends: 175 [2020-10-05 23:08:09,229 INFO L226 Difference]: Without dead ends: 173 [2020-10-05 23:08:09,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=452, Unknown=0, NotChecked=0, Total=650 [2020-10-05 23:08:09,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-05 23:08:09,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 118. [2020-10-05 23:08:09,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-05 23:08:09,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 290 transitions. [2020-10-05 23:08:09,232 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 290 transitions. Word has length 12 [2020-10-05 23:08:09,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:09,232 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 290 transitions. [2020-10-05 23:08:09,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:09,233 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 290 transitions. [2020-10-05 23:08:09,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:09,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:09,233 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:09,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-05 23:08:09,435 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:09,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:09,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1606881141, now seen corresponding path program 42 times [2020-10-05 23:08:09,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:09,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015280656] [2020-10-05 23:08:09,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:09,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:09,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015280656] [2020-10-05 23:08:09,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879763409] [2020-10-05 23:08:09,492 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 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:09,528 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:08:09,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:09,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:09,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:09,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:09,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:09,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:09,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139138840] [2020-10-05 23:08:09,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:09,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:09,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:09,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:09,621 INFO L87 Difference]: Start difference. First operand 118 states and 290 transitions. Second operand 13 states. [2020-10-05 23:08:09,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:09,931 INFO L93 Difference]: Finished difference Result 162 states and 374 transitions. [2020-10-05 23:08:09,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 23:08:09,932 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:09,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:09,933 INFO L225 Difference]: With dead ends: 162 [2020-10-05 23:08:09,933 INFO L226 Difference]: Without dead ends: 160 [2020-10-05 23:08:09,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2020-10-05 23:08:09,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-05 23:08:09,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 118. [2020-10-05 23:08:09,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-05 23:08:09,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 289 transitions. [2020-10-05 23:08:09,937 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 289 transitions. Word has length 12 [2020-10-05 23:08:09,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:09,938 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 289 transitions. [2020-10-05 23:08:09,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:09,938 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 289 transitions. [2020-10-05 23:08:09,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:09,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:09,939 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:10,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,55 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:10,141 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:10,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:10,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1607543270, now seen corresponding path program 43 times [2020-10-05 23:08:10,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:10,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267129763] [2020-10-05 23:08:10,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:10,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:10,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267129763] [2020-10-05 23:08:10,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599955917] [2020-10-05 23:08:10,200 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 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:10,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:10,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:10,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:10,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:10,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:10,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40458706] [2020-10-05 23:08:10,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:10,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:10,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:10,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:10,357 INFO L87 Difference]: Start difference. First operand 118 states and 289 transitions. Second operand 13 states. [2020-10-05 23:08:10,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:10,793 INFO L93 Difference]: Finished difference Result 171 states and 400 transitions. [2020-10-05 23:08:10,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 23:08:10,794 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:10,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:10,796 INFO L225 Difference]: With dead ends: 171 [2020-10-05 23:08:10,796 INFO L226 Difference]: Without dead ends: 169 [2020-10-05 23:08:10,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=234, Invalid=522, Unknown=0, NotChecked=0, Total=756 [2020-10-05 23:08:10,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-05 23:08:10,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 120. [2020-10-05 23:08:10,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 23:08:10,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 296 transitions. [2020-10-05 23:08:10,800 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 296 transitions. Word has length 12 [2020-10-05 23:08:10,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:10,800 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 296 transitions. [2020-10-05 23:08:10,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:10,800 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 296 transitions. [2020-10-05 23:08:10,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:10,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:10,801 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:11,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:11,002 INFO L427 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:11,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:11,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1607564629, now seen corresponding path program 44 times [2020-10-05 23:08:11,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:11,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051604884] [2020-10-05 23:08:11,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:11,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:11,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051604884] [2020-10-05 23:08:11,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830848800] [2020-10-05 23:08:11,063 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 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:11,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:11,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:11,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:11,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:11,176 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:08:11,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:11,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:11,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:11,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016230339] [2020-10-05 23:08:11,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:11,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:11,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:11,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:11,186 INFO L87 Difference]: Start difference. First operand 120 states and 296 transitions. Second operand 13 states. [2020-10-05 23:08:11,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:11,573 INFO L93 Difference]: Finished difference Result 165 states and 396 transitions. [2020-10-05 23:08:11,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 23:08:11,573 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:11,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:11,575 INFO L225 Difference]: With dead ends: 165 [2020-10-05 23:08:11,575 INFO L226 Difference]: Without dead ends: 160 [2020-10-05 23:08:11,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=265, Invalid=547, Unknown=0, NotChecked=0, Total=812 [2020-10-05 23:08:11,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-05 23:08:11,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 121. [2020-10-05 23:08:11,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-05 23:08:11,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 301 transitions. [2020-10-05 23:08:11,578 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 301 transitions. Word has length 12 [2020-10-05 23:08:11,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:11,578 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 301 transitions. [2020-10-05 23:08:11,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:11,578 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 301 transitions. [2020-10-05 23:08:11,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:11,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:11,579 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:11,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:11,780 INFO L427 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:11,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:11,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1607565590, now seen corresponding path program 45 times [2020-10-05 23:08:11,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:11,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531830989] [2020-10-05 23:08:11,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:11,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:11,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531830989] [2020-10-05 23:08:11,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089380945] [2020-10-05 23:08:11,844 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 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:11,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 23:08:11,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:11,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:11,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:11,969 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:08:11,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:12,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:12,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:12,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971532220] [2020-10-05 23:08:12,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:12,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:12,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:12,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:12,001 INFO L87 Difference]: Start difference. First operand 121 states and 301 transitions. Second operand 13 states. [2020-10-05 23:08:12,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:12,561 INFO L93 Difference]: Finished difference Result 194 states and 461 transitions. [2020-10-05 23:08:12,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-05 23:08:12,561 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:12,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:12,563 INFO L225 Difference]: With dead ends: 194 [2020-10-05 23:08:12,563 INFO L226 Difference]: Without dead ends: 186 [2020-10-05 23:08:12,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=695, Unknown=0, NotChecked=0, Total=992 [2020-10-05 23:08:12,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-05 23:08:12,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 118. [2020-10-05 23:08:12,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-05 23:08:12,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 289 transitions. [2020-10-05 23:08:12,568 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 289 transitions. Word has length 12 [2020-10-05 23:08:12,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:12,569 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 289 transitions. [2020-10-05 23:08:12,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:12,569 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 289 transitions. [2020-10-05 23:08:12,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:12,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:12,569 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:12,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:12,779 INFO L427 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:12,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:12,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1607573061, now seen corresponding path program 46 times [2020-10-05 23:08:12,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:12,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605992605] [2020-10-05 23:08:12,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:12,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:12,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605992605] [2020-10-05 23:08:12,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147712598] [2020-10-05 23:08:12,835 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 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:12,894 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:08:12,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:12,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:12,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:12,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:12,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:12,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:12,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161585168] [2020-10-05 23:08:12,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:12,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:12,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:12,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:12,979 INFO L87 Difference]: Start difference. First operand 118 states and 289 transitions. Second operand 13 states. [2020-10-05 23:08:13,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:13,369 INFO L93 Difference]: Finished difference Result 168 states and 393 transitions. [2020-10-05 23:08:13,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-05 23:08:13,370 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:13,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:13,372 INFO L225 Difference]: With dead ends: 168 [2020-10-05 23:08:13,372 INFO L226 Difference]: Without dead ends: 166 [2020-10-05 23:08:13,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=225, Invalid=531, Unknown=0, NotChecked=0, Total=756 [2020-10-05 23:08:13,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-05 23:08:13,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 120. [2020-10-05 23:08:13,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 23:08:13,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 296 transitions. [2020-10-05 23:08:13,376 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 296 transitions. Word has length 12 [2020-10-05 23:08:13,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:13,376 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 296 transitions. [2020-10-05 23:08:13,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:13,376 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 296 transitions. [2020-10-05 23:08:13,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:13,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:13,377 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:13,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2020-10-05 23:08:13,578 INFO L427 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:13,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:13,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1607594420, now seen corresponding path program 47 times [2020-10-05 23:08:13,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:13,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974466249] [2020-10-05 23:08:13,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:13,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:13,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974466249] [2020-10-05 23:08:13,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817063782] [2020-10-05 23:08:13,642 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 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:13,685 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:13,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:13,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:13,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:13,756 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:08:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:13,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:13,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:13,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525436222] [2020-10-05 23:08:13,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:13,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:13,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:13,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:13,765 INFO L87 Difference]: Start difference. First operand 120 states and 296 transitions. Second operand 13 states. [2020-10-05 23:08:14,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:14,258 INFO L93 Difference]: Finished difference Result 181 states and 430 transitions. [2020-10-05 23:08:14,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-05 23:08:14,259 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:14,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:14,260 INFO L225 Difference]: With dead ends: 181 [2020-10-05 23:08:14,261 INFO L226 Difference]: Without dead ends: 173 [2020-10-05 23:08:14,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=645, Unknown=0, NotChecked=0, Total=930 [2020-10-05 23:08:14,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-05 23:08:14,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 119. [2020-10-05 23:08:14,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-05 23:08:14,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 287 transitions. [2020-10-05 23:08:14,264 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 287 transitions. Word has length 12 [2020-10-05 23:08:14,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:14,264 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 287 transitions. [2020-10-05 23:08:14,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:14,265 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 287 transitions. [2020-10-05 23:08:14,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:14,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:14,265 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:14,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:14,466 INFO L427 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:14,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:14,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1607595381, now seen corresponding path program 48 times [2020-10-05 23:08:14,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:14,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558564068] [2020-10-05 23:08:14,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:14,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:14,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558564068] [2020-10-05 23:08:14,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430405082] [2020-10-05 23:08:14,544 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 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:14,582 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:08:14,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:14,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:14,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:14,655 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:08:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:14,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:14,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:14,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202667512] [2020-10-05 23:08:14,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:14,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:14,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:14,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:14,669 INFO L87 Difference]: Start difference. First operand 119 states and 287 transitions. Second operand 13 states. [2020-10-05 23:08:15,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:15,178 INFO L93 Difference]: Finished difference Result 171 states and 400 transitions. [2020-10-05 23:08:15,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-05 23:08:15,179 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:15,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:15,180 INFO L225 Difference]: With dead ends: 171 [2020-10-05 23:08:15,180 INFO L226 Difference]: Without dead ends: 166 [2020-10-05 23:08:15,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=281, Invalid=649, Unknown=0, NotChecked=0, Total=930 [2020-10-05 23:08:15,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-05 23:08:15,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 114. [2020-10-05 23:08:15,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-05 23:08:15,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 268 transitions. [2020-10-05 23:08:15,184 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 268 transitions. Word has length 12 [2020-10-05 23:08:15,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:15,184 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 268 transitions. [2020-10-05 23:08:15,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:15,184 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 268 transitions. [2020-10-05 23:08:15,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:15,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:15,185 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:15,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2020-10-05 23:08:15,386 INFO L427 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:15,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:15,387 INFO L82 PathProgramCache]: Analyzing trace with hash -655922238, now seen corresponding path program 5 times [2020-10-05 23:08:15,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:15,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81261530] [2020-10-05 23:08:15,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:15,463 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:15,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81261530] [2020-10-05 23:08:15,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388716124] [2020-10-05 23:08:15,464 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 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:15,504 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 23:08:15,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:15,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:15,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:15,616 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:08:15,641 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:15,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:15,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-05 23:08:15,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436646198] [2020-10-05 23:08:15,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-05 23:08:15,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:15,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-05 23:08:15,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-05 23:08:15,644 INFO L87 Difference]: Start difference. First operand 114 states and 268 transitions. Second operand 16 states. [2020-10-05 23:08:15,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:15,790 INFO L93 Difference]: Finished difference Result 164 states and 382 transitions. [2020-10-05 23:08:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:08:15,791 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 12 [2020-10-05 23:08:15,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:15,792 INFO L225 Difference]: With dead ends: 164 [2020-10-05 23:08:15,792 INFO L226 Difference]: Without dead ends: 159 [2020-10-05 23:08:15,793 INFO L675 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 [2020-10-05 23:08:15,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-05 23:08:15,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-05 23:08:15,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-05 23:08:15,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 299 transitions. [2020-10-05 23:08:15,796 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 299 transitions. Word has length 12 [2020-10-05 23:08:15,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:15,796 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 299 transitions. [2020-10-05 23:08:15,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-05 23:08:15,797 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 299 transitions. [2020-10-05 23:08:15,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:15,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:15,797 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:15,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:16,000 INFO L427 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:16,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:16,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1940751883, now seen corresponding path program 15 times [2020-10-05 23:08:16,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:16,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851565790] [2020-10-05 23:08:16,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:16,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851565790] [2020-10-05 23:08:16,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301926665] [2020-10-05 23:08:16,072 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 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:16,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 23:08:16,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:16,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:16,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:16,262 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:16,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:16,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:16,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042651557] [2020-10-05 23:08:16,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:16,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:16,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:16,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:16,263 INFO L87 Difference]: Start difference. First operand 122 states and 299 transitions. Second operand 15 states. [2020-10-05 23:08:16,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:16,420 INFO L93 Difference]: Finished difference Result 158 states and 371 transitions. [2020-10-05 23:08:16,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:08:16,420 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-05 23:08:16,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:16,421 INFO L225 Difference]: With dead ends: 158 [2020-10-05 23:08:16,422 INFO L226 Difference]: Without dead ends: 155 [2020-10-05 23:08:16,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:08:16,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-05 23:08:16,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 129. [2020-10-05 23:08:16,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-05 23:08:16,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 315 transitions. [2020-10-05 23:08:16,425 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 315 transitions. Word has length 12 [2020-10-05 23:08:16,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:16,425 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 315 transitions. [2020-10-05 23:08:16,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:16,426 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 315 transitions. [2020-10-05 23:08:16,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:16,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:16,426 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:16,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2020-10-05 23:08:16,636 INFO L427 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:16,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:16,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1078904123, now seen corresponding path program 16 times [2020-10-05 23:08:16,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:16,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355320728] [2020-10-05 23:08:16,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:16,714 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:16,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355320728] [2020-10-05 23:08:16,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932429311] [2020-10-05 23:08:16,715 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 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:16,753 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:08:16,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:16,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:16,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:16,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:16,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:16,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930373095] [2020-10-05 23:08:16,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:16,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:16,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:16,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:16,894 INFO L87 Difference]: Start difference. First operand 129 states and 315 transitions. Second operand 15 states. [2020-10-05 23:08:17,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:17,125 INFO L93 Difference]: Finished difference Result 172 states and 398 transitions. [2020-10-05 23:08:17,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:08:17,126 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-05 23:08:17,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:17,126 INFO L225 Difference]: With dead ends: 172 [2020-10-05 23:08:17,127 INFO L226 Difference]: Without dead ends: 169 [2020-10-05 23:08:17,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-10-05 23:08:17,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-05 23:08:17,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 129. [2020-10-05 23:08:17,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-05 23:08:17,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 315 transitions. [2020-10-05 23:08:17,130 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 315 transitions. Word has length 12 [2020-10-05 23:08:17,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:17,130 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 315 transitions. [2020-10-05 23:08:17,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:17,131 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 315 transitions. [2020-10-05 23:08:17,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:17,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:17,131 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:17,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:17,335 INFO L427 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:17,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:17,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1743839243, now seen corresponding path program 17 times [2020-10-05 23:08:17,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:17,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568249575] [2020-10-05 23:08:17,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:17,408 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:17,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568249575] [2020-10-05 23:08:17,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457257579] [2020-10-05 23:08:17,409 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 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:17,450 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 23:08:17,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:17,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:17,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:17,571 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:17,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:17,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:17,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666357065] [2020-10-05 23:08:17,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:17,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:17,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:17,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:17,572 INFO L87 Difference]: Start difference. First operand 129 states and 315 transitions. Second operand 15 states. [2020-10-05 23:08:17,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:17,857 INFO L93 Difference]: Finished difference Result 177 states and 410 transitions. [2020-10-05 23:08:17,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 23:08:17,858 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-05 23:08:17,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:17,859 INFO L225 Difference]: With dead ends: 177 [2020-10-05 23:08:17,859 INFO L226 Difference]: Without dead ends: 174 [2020-10-05 23:08:17,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2020-10-05 23:08:17,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-05 23:08:17,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 130. [2020-10-05 23:08:17,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-05 23:08:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 320 transitions. [2020-10-05 23:08:17,864 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 320 transitions. Word has length 12 [2020-10-05 23:08:17,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:17,865 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 320 transitions. [2020-10-05 23:08:17,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:17,865 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 320 transitions. [2020-10-05 23:08:17,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:17,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:17,866 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:18,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:18,069 INFO L427 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:18,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:18,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1765288763, now seen corresponding path program 18 times [2020-10-05 23:08:18,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:18,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2638554] [2020-10-05 23:08:18,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:18,140 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:18,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2638554] [2020-10-05 23:08:18,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464197903] [2020-10-05 23:08:18,140 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 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:18,188 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 23:08:18,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:18,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:18,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:18,312 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:18,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:18,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:18,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065680267] [2020-10-05 23:08:18,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:18,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:18,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:18,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:18,314 INFO L87 Difference]: Start difference. First operand 130 states and 320 transitions. Second operand 15 states. [2020-10-05 23:08:18,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:18,642 INFO L93 Difference]: Finished difference Result 176 states and 410 transitions. [2020-10-05 23:08:18,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 23:08:18,643 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-05 23:08:18,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:18,644 INFO L225 Difference]: With dead ends: 176 [2020-10-05 23:08:18,645 INFO L226 Difference]: Without dead ends: 173 [2020-10-05 23:08:18,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=460, Unknown=0, NotChecked=0, Total=650 [2020-10-05 23:08:18,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-05 23:08:18,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 132. [2020-10-05 23:08:18,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-05 23:08:18,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 327 transitions. [2020-10-05 23:08:18,649 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 327 transitions. Word has length 12 [2020-10-05 23:08:18,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:18,649 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 327 transitions. [2020-10-05 23:08:18,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:18,650 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 327 transitions. [2020-10-05 23:08:18,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:18,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:18,650 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:18,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2020-10-05 23:08:18,851 INFO L427 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:18,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:18,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1765980683, now seen corresponding path program 19 times [2020-10-05 23:08:18,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:18,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101474417] [2020-10-05 23:08:18,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:18,924 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:18,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101474417] [2020-10-05 23:08:18,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939857537] [2020-10-05 23:08:18,925 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 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:18,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:18,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:19,077 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:19,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:19,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:19,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177344355] [2020-10-05 23:08:19,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:19,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:19,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:19,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:19,079 INFO L87 Difference]: Start difference. First operand 132 states and 327 transitions. Second operand 15 states. [2020-10-05 23:08:19,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:19,368 INFO L93 Difference]: Finished difference Result 169 states and 398 transitions. [2020-10-05 23:08:19,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 23:08:19,369 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-05 23:08:19,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:19,370 INFO L225 Difference]: With dead ends: 169 [2020-10-05 23:08:19,371 INFO L226 Difference]: Without dead ends: 166 [2020-10-05 23:08:19,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2020-10-05 23:08:19,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-05 23:08:19,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 134. [2020-10-05 23:08:19,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-05 23:08:19,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 334 transitions. [2020-10-05 23:08:19,375 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 334 transitions. Word has length 12 [2020-10-05 23:08:19,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:19,376 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 334 transitions. [2020-10-05 23:08:19,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:19,376 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 334 transitions. [2020-10-05 23:08:19,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:19,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:19,377 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:19,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:19,588 INFO L427 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:19,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:19,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1766003003, now seen corresponding path program 20 times [2020-10-05 23:08:19,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:19,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905642318] [2020-10-05 23:08:19,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:19,689 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:19,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905642318] [2020-10-05 23:08:19,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50576058] [2020-10-05 23:08:19,690 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 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:19,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:19,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:19,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:19,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:19,816 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:08:19,832 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:19,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:19,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:19,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087291173] [2020-10-05 23:08:19,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:19,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:19,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:19,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:19,834 INFO L87 Difference]: Start difference. First operand 134 states and 334 transitions. Second operand 15 states. [2020-10-05 23:08:20,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:20,159 INFO L93 Difference]: Finished difference Result 176 states and 418 transitions. [2020-10-05 23:08:20,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:08:20,162 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-05 23:08:20,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:20,163 INFO L225 Difference]: With dead ends: 176 [2020-10-05 23:08:20,163 INFO L226 Difference]: Without dead ends: 170 [2020-10-05 23:08:20,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=203, Invalid=447, Unknown=0, NotChecked=0, Total=650 [2020-10-05 23:08:20,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-05 23:08:20,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 132. [2020-10-05 23:08:20,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-05 23:08:20,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-05 23:08:20,167 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 12 [2020-10-05 23:08:20,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:20,167 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-05 23:08:20,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:20,167 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-05 23:08:20,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:20,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:20,168 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:20,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:20,369 INFO L427 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:20,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:20,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1530333459, now seen corresponding path program 49 times [2020-10-05 23:08:20,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:20,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659278684] [2020-10-05 23:08:20,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:20,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:20,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659278684] [2020-10-05 23:08:20,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187403910] [2020-10-05 23:08:20,465 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 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:20,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:20,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:20,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:20,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:20,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:20,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306632683] [2020-10-05 23:08:20,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:20,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:20,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:20,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:20,647 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 15 states. [2020-10-05 23:08:20,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:20,696 INFO L93 Difference]: Finished difference Result 163 states and 394 transitions. [2020-10-05 23:08:20,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 23:08:20,697 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:20,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:20,698 INFO L225 Difference]: With dead ends: 163 [2020-10-05 23:08:20,698 INFO L226 Difference]: Without dead ends: 161 [2020-10-05 23:08:20,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:20,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-05 23:08:20,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 138. [2020-10-05 23:08:20,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-05 23:08:20,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 350 transitions. [2020-10-05 23:08:20,702 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 350 transitions. Word has length 13 [2020-10-05 23:08:20,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:20,702 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 350 transitions. [2020-10-05 23:08:20,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:20,702 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 350 transitions. [2020-10-05 23:08:20,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:20,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:20,703 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:20,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2020-10-05 23:08:20,904 INFO L427 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:20,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:20,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1530332498, now seen corresponding path program 50 times [2020-10-05 23:08:20,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:20,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492009589] [2020-10-05 23:08:20,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:21,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:21,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492009589] [2020-10-05 23:08:21,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139406495] [2020-10-05 23:08:21,026 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 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:21,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:21,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:21,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:21,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:21,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:21,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:21,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:21,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061588178] [2020-10-05 23:08:21,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:21,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:21,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:21,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:21,282 INFO L87 Difference]: Start difference. First operand 138 states and 350 transitions. Second operand 15 states. [2020-10-05 23:08:21,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:21,410 INFO L93 Difference]: Finished difference Result 172 states and 412 transitions. [2020-10-05 23:08:21,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:08:21,411 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:21,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:21,413 INFO L225 Difference]: With dead ends: 172 [2020-10-05 23:08:21,414 INFO L226 Difference]: Without dead ends: 170 [2020-10-05 23:08:21,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-10-05 23:08:21,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-05 23:08:21,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 136. [2020-10-05 23:08:21,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-05 23:08:21,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 344 transitions. [2020-10-05 23:08:21,419 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 344 transitions. Word has length 13 [2020-10-05 23:08:21,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:21,420 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 344 transitions. [2020-10-05 23:08:21,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:21,420 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 344 transitions. [2020-10-05 23:08:21,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:21,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:21,421 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:21,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:21,622 INFO L427 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:21,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:21,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1530303668, now seen corresponding path program 51 times [2020-10-05 23:08:21,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:21,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393434530] [2020-10-05 23:08:21,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:21,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:21,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393434530] [2020-10-05 23:08:21,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450866671] [2020-10-05 23:08:21,728 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 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:21,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:08:21,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:21,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:21,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:22,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:22,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:22,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:22,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832059312] [2020-10-05 23:08:22,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:22,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:22,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:22,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:22,670 INFO L87 Difference]: Start difference. First operand 136 states and 344 transitions. Second operand 15 states. [2020-10-05 23:08:22,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:22,825 INFO L93 Difference]: Finished difference Result 179 states and 426 transitions. [2020-10-05 23:08:22,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:08:22,826 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:22,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:22,828 INFO L225 Difference]: With dead ends: 179 [2020-10-05 23:08:22,828 INFO L226 Difference]: Without dead ends: 177 [2020-10-05 23:08:22,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-10-05 23:08:22,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-05 23:08:22,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 134. [2020-10-05 23:08:22,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-05 23:08:22,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 338 transitions. [2020-10-05 23:08:22,831 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 338 transitions. Word has length 13 [2020-10-05 23:08:22,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:22,832 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 338 transitions. [2020-10-05 23:08:22,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:22,832 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 338 transitions. [2020-10-05 23:08:22,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:22,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:22,832 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:23,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2020-10-05 23:08:23,033 INFO L427 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:23,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:23,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1529409938, now seen corresponding path program 52 times [2020-10-05 23:08:23,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:23,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149933923] [2020-10-05 23:08:23,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:23,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:23,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149933923] [2020-10-05 23:08:23,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532703032] [2020-10-05 23:08:23,112 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 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:23,151 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:08:23,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:23,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:23,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:23,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:23,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:23,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:23,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692859768] [2020-10-05 23:08:23,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:23,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:23,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:23,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:23,294 INFO L87 Difference]: Start difference. First operand 134 states and 338 transitions. Second operand 15 states. [2020-10-05 23:08:23,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:23,477 INFO L93 Difference]: Finished difference Result 179 states and 426 transitions. [2020-10-05 23:08:23,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 23:08:23,477 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:23,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:23,479 INFO L225 Difference]: With dead ends: 179 [2020-10-05 23:08:23,479 INFO L226 Difference]: Without dead ends: 177 [2020-10-05 23:08:23,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2020-10-05 23:08:23,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-05 23:08:23,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 136. [2020-10-05 23:08:23,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-05 23:08:23,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 344 transitions. [2020-10-05 23:08:23,483 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 344 transitions. Word has length 13 [2020-10-05 23:08:23,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:23,483 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 344 transitions. [2020-10-05 23:08:23,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:23,483 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 344 transitions. [2020-10-05 23:08:23,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:23,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:23,484 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:23,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2020-10-05 23:08:23,695 INFO L427 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:23,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:23,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1529408977, now seen corresponding path program 53 times [2020-10-05 23:08:23,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:23,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103035589] [2020-10-05 23:08:23,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:23,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:23,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103035589] [2020-10-05 23:08:23,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053916811] [2020-10-05 23:08:23,775 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 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:23,815 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:23,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:23,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:23,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:23,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:23,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:23,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:23,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120357034] [2020-10-05 23:08:23,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:23,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:23,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:23,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:23,941 INFO L87 Difference]: Start difference. First operand 136 states and 344 transitions. Second operand 15 states. [2020-10-05 23:08:24,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:24,139 INFO L93 Difference]: Finished difference Result 184 states and 436 transitions. [2020-10-05 23:08:24,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:08:24,140 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:24,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:24,142 INFO L225 Difference]: With dead ends: 184 [2020-10-05 23:08:24,142 INFO L226 Difference]: Without dead ends: 182 [2020-10-05 23:08:24,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2020-10-05 23:08:24,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-05 23:08:24,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 136. [2020-10-05 23:08:24,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-05 23:08:24,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 342 transitions. [2020-10-05 23:08:24,147 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 342 transitions. Word has length 13 [2020-10-05 23:08:24,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:24,147 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 342 transitions. [2020-10-05 23:08:24,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:24,148 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 342 transitions. [2020-10-05 23:08:24,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:24,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:24,149 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:24,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-05 23:08:24,362 INFO L427 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:24,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:24,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1529380147, now seen corresponding path program 54 times [2020-10-05 23:08:24,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:24,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551121190] [2020-10-05 23:08:24,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:24,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:24,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551121190] [2020-10-05 23:08:24,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535044566] [2020-10-05 23:08:24,460 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 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:24,528 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 23:08:24,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:24,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:24,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:24,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:24,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:24,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145104045] [2020-10-05 23:08:24,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:24,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:24,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:24,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:24,717 INFO L87 Difference]: Start difference. First operand 136 states and 342 transitions. Second operand 15 states. [2020-10-05 23:08:24,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:24,976 INFO L93 Difference]: Finished difference Result 179 states and 427 transitions. [2020-10-05 23:08:24,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:08:24,977 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:24,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:24,978 INFO L225 Difference]: With dead ends: 179 [2020-10-05 23:08:24,978 INFO L226 Difference]: Without dead ends: 177 [2020-10-05 23:08:24,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-05 23:08:24,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-05 23:08:24,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 135. [2020-10-05 23:08:24,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-05 23:08:24,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions. [2020-10-05 23:08:24,981 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13 [2020-10-05 23:08:24,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:24,981 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 339 transitions. [2020-10-05 23:08:24,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:24,981 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions. [2020-10-05 23:08:24,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:24,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:24,982 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:25,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:25,190 INFO L427 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:25,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:25,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1501704308, now seen corresponding path program 55 times [2020-10-05 23:08:25,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:25,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897663957] [2020-10-05 23:08:25,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:25,265 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:25,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897663957] [2020-10-05 23:08:25,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444879468] [2020-10-05 23:08:25,266 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 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:25,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:25,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:25,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:25,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:25,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:25,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841320348] [2020-10-05 23:08:25,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:25,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:25,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:25,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:25,436 INFO L87 Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 15 states. [2020-10-05 23:08:25,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:25,696 INFO L93 Difference]: Finished difference Result 177 states and 424 transitions. [2020-10-05 23:08:25,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 23:08:25,697 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:25,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:25,699 INFO L225 Difference]: With dead ends: 177 [2020-10-05 23:08:25,699 INFO L226 Difference]: Without dead ends: 175 [2020-10-05 23:08:25,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=354, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:08:25,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-05 23:08:25,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 139. [2020-10-05 23:08:25,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-05 23:08:25,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 350 transitions. [2020-10-05 23:08:25,702 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 350 transitions. Word has length 13 [2020-10-05 23:08:25,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:25,702 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 350 transitions. [2020-10-05 23:08:25,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:25,702 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 350 transitions. [2020-10-05 23:08:25,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:25,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:25,702 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:25,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,75 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:25,903 INFO L427 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:25,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:25,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1501703347, now seen corresponding path program 56 times [2020-10-05 23:08:25,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:25,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75103085] [2020-10-05 23:08:25,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:25,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:25,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75103085] [2020-10-05 23:08:25,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846447341] [2020-10-05 23:08:25,983 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 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:26,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:26,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:26,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:26,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:26,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:26,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:26,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:26,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174708372] [2020-10-05 23:08:26,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:26,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:26,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:26,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:26,164 INFO L87 Difference]: Start difference. First operand 139 states and 350 transitions. Second operand 15 states. [2020-10-05 23:08:26,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:26,416 INFO L93 Difference]: Finished difference Result 187 states and 443 transitions. [2020-10-05 23:08:26,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:08:26,417 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:26,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:26,418 INFO L225 Difference]: With dead ends: 187 [2020-10-05 23:08:26,419 INFO L226 Difference]: Without dead ends: 185 [2020-10-05 23:08:26,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:08:26,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-05 23:08:26,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 140. [2020-10-05 23:08:26,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 23:08:26,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 352 transitions. [2020-10-05 23:08:26,422 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 352 transitions. Word has length 13 [2020-10-05 23:08:26,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:26,422 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 352 transitions. [2020-10-05 23:08:26,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:26,422 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 352 transitions. [2020-10-05 23:08:26,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:26,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:26,423 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:26,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:26,624 INFO L427 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:26,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:26,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1501674517, now seen corresponding path program 57 times [2020-10-05 23:08:26,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:26,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342215554] [2020-10-05 23:08:26,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:26,709 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:26,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342215554] [2020-10-05 23:08:26,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377804063] [2020-10-05 23:08:26,710 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 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:26,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 23:08:26,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:26,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:26,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:26,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:26,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:26,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:26,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068547264] [2020-10-05 23:08:26,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:26,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:26,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:26,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:26,905 INFO L87 Difference]: Start difference. First operand 140 states and 352 transitions. Second operand 15 states. [2020-10-05 23:08:27,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:27,155 INFO L93 Difference]: Finished difference Result 181 states and 433 transitions. [2020-10-05 23:08:27,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:08:27,156 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:27,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:27,157 INFO L225 Difference]: With dead ends: 181 [2020-10-05 23:08:27,157 INFO L226 Difference]: Without dead ends: 179 [2020-10-05 23:08:27,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-10-05 23:08:27,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-05 23:08:27,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 138. [2020-10-05 23:08:27,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-05 23:08:27,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 345 transitions. [2020-10-05 23:08:27,161 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 345 transitions. Word has length 13 [2020-10-05 23:08:27,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:27,161 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 345 transitions. [2020-10-05 23:08:27,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:27,161 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 345 transitions. [2020-10-05 23:08:27,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:27,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:27,162 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:27,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:27,362 INFO L427 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:27,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:27,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1043911547, now seen corresponding path program 58 times [2020-10-05 23:08:27,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:27,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522460892] [2020-10-05 23:08:27,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:27,501 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:27,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522460892] [2020-10-05 23:08:27,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764280768] [2020-10-05 23:08:27,502 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 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:27,541 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:08:27,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:27,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:27,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:27,674 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:27,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:27,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:27,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736459022] [2020-10-05 23:08:27,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:27,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:27,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:27,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:27,676 INFO L87 Difference]: Start difference. First operand 138 states and 345 transitions. Second operand 15 states. [2020-10-05 23:08:27,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:27,745 INFO L93 Difference]: Finished difference Result 182 states and 432 transitions. [2020-10-05 23:08:27,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:08:27,746 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:27,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:27,747 INFO L225 Difference]: With dead ends: 182 [2020-10-05 23:08:27,748 INFO L226 Difference]: Without dead ends: 180 [2020-10-05 23:08:27,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-05 23:08:27,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-05 23:08:27,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 144. [2020-10-05 23:08:27,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-05 23:08:27,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 363 transitions. [2020-10-05 23:08:27,752 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 363 transitions. Word has length 13 [2020-10-05 23:08:27,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:27,752 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 363 transitions. [2020-10-05 23:08:27,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:27,753 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 363 transitions. [2020-10-05 23:08:27,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:27,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:27,753 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:27,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2020-10-05 23:08:27,963 INFO L427 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:27,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:27,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1043912508, now seen corresponding path program 59 times [2020-10-05 23:08:27,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:27,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275944438] [2020-10-05 23:08:27,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:28,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:28,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275944438] [2020-10-05 23:08:28,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23505196] [2020-10-05 23:08:28,072 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 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:28,126 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:28,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:28,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:28,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:28,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:28,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:28,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:28,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343849558] [2020-10-05 23:08:28,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:28,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:28,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:28,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:28,299 INFO L87 Difference]: Start difference. First operand 144 states and 363 transitions. Second operand 15 states. [2020-10-05 23:08:28,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:28,419 INFO L93 Difference]: Finished difference Result 185 states and 437 transitions. [2020-10-05 23:08:28,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:08:28,420 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:28,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:28,421 INFO L225 Difference]: With dead ends: 185 [2020-10-05 23:08:28,422 INFO L226 Difference]: Without dead ends: 183 [2020-10-05 23:08:28,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:08:28,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-05 23:08:28,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 142. [2020-10-05 23:08:28,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 23:08:28,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 357 transitions. [2020-10-05 23:08:28,428 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 357 transitions. Word has length 13 [2020-10-05 23:08:28,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:28,428 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 357 transitions. [2020-10-05 23:08:28,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:28,429 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 357 transitions. [2020-10-05 23:08:28,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:28,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:28,430 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:28,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:28,641 INFO L427 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:28,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:28,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1043941338, now seen corresponding path program 60 times [2020-10-05 23:08:28,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:28,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855790262] [2020-10-05 23:08:28,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:28,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:28,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855790262] [2020-10-05 23:08:28,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914262749] [2020-10-05 23:08:28,741 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 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:28,780 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:08:28,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:28,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:28,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:28,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:28,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:28,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:28,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503301599] [2020-10-05 23:08:28,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:28,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:28,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:28,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:28,948 INFO L87 Difference]: Start difference. First operand 142 states and 357 transitions. Second operand 15 states. [2020-10-05 23:08:29,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:29,135 INFO L93 Difference]: Finished difference Result 191 states and 449 transitions. [2020-10-05 23:08:29,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 23:08:29,135 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:29,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:29,136 INFO L225 Difference]: With dead ends: 191 [2020-10-05 23:08:29,137 INFO L226 Difference]: Without dead ends: 189 [2020-10-05 23:08:29,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2020-10-05 23:08:29,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-05 23:08:29,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 140. [2020-10-05 23:08:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 23:08:29,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 351 transitions. [2020-10-05 23:08:29,141 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 351 transitions. Word has length 13 [2020-10-05 23:08:29,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:29,141 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 351 transitions. [2020-10-05 23:08:29,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:29,141 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 351 transitions. [2020-10-05 23:08:29,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:29,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:29,142 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:29,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:29,343 INFO L427 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:29,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:29,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1044835068, now seen corresponding path program 61 times [2020-10-05 23:08:29,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:29,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37608671] [2020-10-05 23:08:29,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:29,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:29,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37608671] [2020-10-05 23:08:29,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331471365] [2020-10-05 23:08:29,432 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 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:29,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:29,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:29,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:29,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:29,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:29,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954343065] [2020-10-05 23:08:29,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:29,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:29,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:29,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:29,602 INFO L87 Difference]: Start difference. First operand 140 states and 351 transitions. Second operand 15 states. [2020-10-05 23:08:29,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:29,808 INFO L93 Difference]: Finished difference Result 187 states and 441 transitions. [2020-10-05 23:08:29,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:08:29,808 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:29,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:29,810 INFO L225 Difference]: With dead ends: 187 [2020-10-05 23:08:29,810 INFO L226 Difference]: Without dead ends: 185 [2020-10-05 23:08:29,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:08:29,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-05 23:08:29,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 142. [2020-10-05 23:08:29,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 23:08:29,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 357 transitions. [2020-10-05 23:08:29,814 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 357 transitions. Word has length 13 [2020-10-05 23:08:29,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:29,814 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 357 transitions. [2020-10-05 23:08:29,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:29,814 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 357 transitions. [2020-10-05 23:08:29,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:29,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:29,814 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:30,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:30,015 INFO L427 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:30,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:30,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1044836029, now seen corresponding path program 62 times [2020-10-05 23:08:30,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:30,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859225135] [2020-10-05 23:08:30,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:30,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:30,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859225135] [2020-10-05 23:08:30,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216865192] [2020-10-05 23:08:30,107 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 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:30,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:30,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:30,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:30,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:30,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:30,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:30,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:30,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669224784] [2020-10-05 23:08:30,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:30,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:30,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:30,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:30,295 INFO L87 Difference]: Start difference. First operand 142 states and 357 transitions. Second operand 15 states. [2020-10-05 23:08:30,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:30,487 INFO L93 Difference]: Finished difference Result 194 states and 455 transitions. [2020-10-05 23:08:30,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 23:08:30,488 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:30,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:30,490 INFO L225 Difference]: With dead ends: 194 [2020-10-05 23:08:30,490 INFO L226 Difference]: Without dead ends: 192 [2020-10-05 23:08:30,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:08:30,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-05 23:08:30,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 142. [2020-10-05 23:08:30,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 23:08:30,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 356 transitions. [2020-10-05 23:08:30,494 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 356 transitions. Word has length 13 [2020-10-05 23:08:30,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:30,495 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 356 transitions. [2020-10-05 23:08:30,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:30,495 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 356 transitions. [2020-10-05 23:08:30,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:30,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:30,495 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:30,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:30,696 INFO L427 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:30,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:30,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1044864859, now seen corresponding path program 63 times [2020-10-05 23:08:30,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:30,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009334633] [2020-10-05 23:08:30,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:30,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:30,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009334633] [2020-10-05 23:08:30,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383397592] [2020-10-05 23:08:30,784 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 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:30,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 23:08:30,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:30,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:30,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:30,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:30,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:30,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:30,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776100344] [2020-10-05 23:08:30,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:30,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:30,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:30,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:30,962 INFO L87 Difference]: Start difference. First operand 142 states and 356 transitions. Second operand 15 states. [2020-10-05 23:08:31,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:31,186 INFO L93 Difference]: Finished difference Result 186 states and 443 transitions. [2020-10-05 23:08:31,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 23:08:31,190 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:31,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:31,191 INFO L225 Difference]: With dead ends: 186 [2020-10-05 23:08:31,191 INFO L226 Difference]: Without dead ends: 184 [2020-10-05 23:08:31,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:08:31,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-05 23:08:31,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 139. [2020-10-05 23:08:31,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-05 23:08:31,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 347 transitions. [2020-10-05 23:08:31,194 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 347 transitions. Word has length 13 [2020-10-05 23:08:31,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:31,194 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 347 transitions. [2020-10-05 23:08:31,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:31,194 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 347 transitions. [2020-10-05 23:08:31,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:31,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:31,195 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:31,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-10-05 23:08:31,395 INFO L427 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:31,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:31,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1681141037, now seen corresponding path program 64 times [2020-10-05 23:08:31,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:31,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621266583] [2020-10-05 23:08:31,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:31,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:31,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621266583] [2020-10-05 23:08:31,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649455849] [2020-10-05 23:08:31,507 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 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:31,554 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:08:31,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:31,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:31,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:31,688 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:31,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:31,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:31,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913640149] [2020-10-05 23:08:31,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:31,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:31,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:31,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:31,689 INFO L87 Difference]: Start difference. First operand 139 states and 347 transitions. Second operand 15 states. [2020-10-05 23:08:31,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:31,782 INFO L93 Difference]: Finished difference Result 178 states and 423 transitions. [2020-10-05 23:08:31,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:08:31,783 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:31,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:31,784 INFO L225 Difference]: With dead ends: 178 [2020-10-05 23:08:31,784 INFO L226 Difference]: Without dead ends: 176 [2020-10-05 23:08:31,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:08:31,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-05 23:08:31,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 143. [2020-10-05 23:08:31,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-05 23:08:31,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 359 transitions. [2020-10-05 23:08:31,788 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 359 transitions. Word has length 13 [2020-10-05 23:08:31,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:31,788 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 359 transitions. [2020-10-05 23:08:31,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:31,789 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 359 transitions. [2020-10-05 23:08:31,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:31,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:31,789 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:31,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2020-10-05 23:08:31,990 INFO L427 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:31,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:31,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1681141998, now seen corresponding path program 65 times [2020-10-05 23:08:31,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:31,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988401752] [2020-10-05 23:08:31,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:32,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:32,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988401752] [2020-10-05 23:08:32,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535918636] [2020-10-05 23:08:32,091 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 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:32,133 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:32,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:32,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:32,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:32,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:32,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:32,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:32,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906446672] [2020-10-05 23:08:32,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:32,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:32,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:32,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:32,264 INFO L87 Difference]: Start difference. First operand 143 states and 359 transitions. Second operand 15 states. [2020-10-05 23:08:32,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:32,391 INFO L93 Difference]: Finished difference Result 181 states and 428 transitions. [2020-10-05 23:08:32,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 23:08:32,392 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:32,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:32,394 INFO L225 Difference]: With dead ends: 181 [2020-10-05 23:08:32,394 INFO L226 Difference]: Without dead ends: 179 [2020-10-05 23:08:32,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-05 23:08:32,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-05 23:08:32,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 141. [2020-10-05 23:08:32,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-05 23:08:32,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 353 transitions. [2020-10-05 23:08:32,398 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 353 transitions. Word has length 13 [2020-10-05 23:08:32,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:32,399 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 353 transitions. [2020-10-05 23:08:32,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:32,399 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 353 transitions. [2020-10-05 23:08:32,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:32,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:32,400 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:32,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,85 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:32,610 INFO L427 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:32,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:32,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1681170828, now seen corresponding path program 66 times [2020-10-05 23:08:32,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:32,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962666419] [2020-10-05 23:08:32,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:32,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:32,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962666419] [2020-10-05 23:08:32,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232619432] [2020-10-05 23:08:32,717 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 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:32,764 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:08:32,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:32,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:32,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:32,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:32,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:32,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:32,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469625765] [2020-10-05 23:08:32,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:32,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:32,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:32,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:32,961 INFO L87 Difference]: Start difference. First operand 141 states and 353 transitions. Second operand 15 states. [2020-10-05 23:08:33,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:33,161 INFO L93 Difference]: Finished difference Result 187 states and 440 transitions. [2020-10-05 23:08:33,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:08:33,162 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:33,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:33,163 INFO L225 Difference]: With dead ends: 187 [2020-10-05 23:08:33,164 INFO L226 Difference]: Without dead ends: 185 [2020-10-05 23:08:33,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-05 23:08:33,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-05 23:08:33,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 140. [2020-10-05 23:08:33,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 23:08:33,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 349 transitions. [2020-10-05 23:08:33,172 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 349 transitions. Word has length 13 [2020-10-05 23:08:33,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:33,173 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 349 transitions. [2020-10-05 23:08:33,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:33,173 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 349 transitions. [2020-10-05 23:08:33,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:33,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:33,176 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:33,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:33,386 INFO L427 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:33,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:33,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1701696827, now seen corresponding path program 67 times [2020-10-05 23:08:33,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:33,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793244748] [2020-10-05 23:08:33,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:33,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793244748] [2020-10-05 23:08:33,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573830167] [2020-10-05 23:08:33,489 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 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:33,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:33,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:33,667 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:33,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:33,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:33,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703332054] [2020-10-05 23:08:33,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:33,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:33,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:33,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:33,669 INFO L87 Difference]: Start difference. First operand 140 states and 349 transitions. Second operand 15 states. [2020-10-05 23:08:33,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:33,801 INFO L93 Difference]: Finished difference Result 174 states and 414 transitions. [2020-10-05 23:08:33,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 23:08:33,802 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:33,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:33,803 INFO L225 Difference]: With dead ends: 174 [2020-10-05 23:08:33,803 INFO L226 Difference]: Without dead ends: 172 [2020-10-05 23:08:33,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-10-05 23:08:33,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-05 23:08:33,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 142. [2020-10-05 23:08:33,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 23:08:33,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 355 transitions. [2020-10-05 23:08:33,807 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 355 transitions. Word has length 13 [2020-10-05 23:08:33,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:33,807 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 355 transitions. [2020-10-05 23:08:33,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:33,807 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 355 transitions. [2020-10-05 23:08:33,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:33,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:33,808 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:34,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,87 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:34,009 INFO L427 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:34,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:34,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1701697788, now seen corresponding path program 68 times [2020-10-05 23:08:34,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:34,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234867711] [2020-10-05 23:08:34,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:34,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:34,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234867711] [2020-10-05 23:08:34,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226994317] [2020-10-05 23:08:34,097 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 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:34,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:34,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:34,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:34,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:34,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:34,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:34,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:34,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226205591] [2020-10-05 23:08:34,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:34,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:34,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:34,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:34,271 INFO L87 Difference]: Start difference. First operand 142 states and 355 transitions. Second operand 15 states. [2020-10-05 23:08:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:34,420 INFO L93 Difference]: Finished difference Result 177 states and 419 transitions. [2020-10-05 23:08:34,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:08:34,421 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:34,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:34,422 INFO L225 Difference]: With dead ends: 177 [2020-10-05 23:08:34,423 INFO L226 Difference]: Without dead ends: 175 [2020-10-05 23:08:34,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-05 23:08:34,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-05 23:08:34,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 141. [2020-10-05 23:08:34,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-05 23:08:34,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 351 transitions. [2020-10-05 23:08:34,426 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 351 transitions. Word has length 13 [2020-10-05 23:08:34,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:34,426 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 351 transitions. [2020-10-05 23:08:34,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:34,426 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 351 transitions. [2020-10-05 23:08:34,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:34,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:34,427 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:34,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:34,628 INFO L427 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:34,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:34,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1702359917, now seen corresponding path program 69 times [2020-10-05 23:08:34,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:34,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436218778] [2020-10-05 23:08:34,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:34,711 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:34,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436218778] [2020-10-05 23:08:34,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498822739] [2020-10-05 23:08:34,712 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 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:34,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 23:08:34,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:34,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:34,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:34,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:34,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:34,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:34,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52482418] [2020-10-05 23:08:34,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:34,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:34,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:34,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:34,880 INFO L87 Difference]: Start difference. First operand 141 states and 351 transitions. Second operand 15 states. [2020-10-05 23:08:35,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:35,033 INFO L93 Difference]: Finished difference Result 175 states and 413 transitions. [2020-10-05 23:08:35,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:08:35,034 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:35,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:35,035 INFO L225 Difference]: With dead ends: 175 [2020-10-05 23:08:35,036 INFO L226 Difference]: Without dead ends: 173 [2020-10-05 23:08:35,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-10-05 23:08:35,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-05 23:08:35,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 145. [2020-10-05 23:08:35,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-05 23:08:35,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-05 23:08:35,040 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-05 23:08:35,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:35,040 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-05 23:08:35,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:35,040 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-05 23:08:35,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:35,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:35,041 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:35,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:35,250 INFO L427 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:35,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:35,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1702382237, now seen corresponding path program 70 times [2020-10-05 23:08:35,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:35,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768325723] [2020-10-05 23:08:35,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:35,328 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:35,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768325723] [2020-10-05 23:08:35,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614677289] [2020-10-05 23:08:35,329 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 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:35,372 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:08:35,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:35,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:35,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:35,491 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:08:35,528 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:35,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:35,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:35,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001884204] [2020-10-05 23:08:35,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:35,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:35,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:35,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:35,530 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-05 23:08:35,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:35,917 INFO L93 Difference]: Finished difference Result 195 states and 464 transitions. [2020-10-05 23:08:35,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:08:35,918 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:35,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:35,919 INFO L225 Difference]: With dead ends: 195 [2020-10-05 23:08:35,920 INFO L226 Difference]: Without dead ends: 190 [2020-10-05 23:08:35,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=213, Invalid=437, Unknown=0, NotChecked=0, Total=650 [2020-10-05 23:08:35,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-05 23:08:35,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 143. [2020-10-05 23:08:35,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-05 23:08:35,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 350 transitions. [2020-10-05 23:08:35,924 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 350 transitions. Word has length 13 [2020-10-05 23:08:35,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:35,924 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 350 transitions. [2020-10-05 23:08:35,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:35,924 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 350 transitions. [2020-10-05 23:08:35,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:35,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:35,925 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:36,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:36,126 INFO L427 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:36,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:36,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1702389708, now seen corresponding path program 71 times [2020-10-05 23:08:36,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:36,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318386740] [2020-10-05 23:08:36,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:36,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:36,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318386740] [2020-10-05 23:08:36,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625915952] [2020-10-05 23:08:36,211 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 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:36,263 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:36,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:36,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:36,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:36,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:36,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:36,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807481401] [2020-10-05 23:08:36,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:36,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:36,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:36,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:36,419 INFO L87 Difference]: Start difference. First operand 143 states and 350 transitions. Second operand 15 states. [2020-10-05 23:08:36,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:36,716 INFO L93 Difference]: Finished difference Result 187 states and 442 transitions. [2020-10-05 23:08:36,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 23:08:36,716 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:36,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:36,717 INFO L225 Difference]: With dead ends: 187 [2020-10-05 23:08:36,718 INFO L226 Difference]: Without dead ends: 185 [2020-10-05 23:08:36,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2020-10-05 23:08:36,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-05 23:08:36,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 145. [2020-10-05 23:08:36,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-05 23:08:36,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-05 23:08:36,721 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-05 23:08:36,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:36,722 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-05 23:08:36,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:36,722 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-05 23:08:36,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:36,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:36,722 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:36,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:36,923 INFO L427 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:36,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:36,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1702411067, now seen corresponding path program 72 times [2020-10-05 23:08:36,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:36,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854043350] [2020-10-05 23:08:36,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:37,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:37,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854043350] [2020-10-05 23:08:37,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890472593] [2020-10-05 23:08:37,005 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 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:37,042 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 23:08:37,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:37,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:37,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:37,167 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:08:37,195 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:37,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:37,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:37,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101659746] [2020-10-05 23:08:37,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:37,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:37,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:37,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:37,197 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-05 23:08:37,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:37,723 INFO L93 Difference]: Finished difference Result 212 states and 503 transitions. [2020-10-05 23:08:37,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 23:08:37,723 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:37,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:37,724 INFO L225 Difference]: With dead ends: 212 [2020-10-05 23:08:37,724 INFO L226 Difference]: Without dead ends: 207 [2020-10-05 23:08:37,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=265, Invalid=547, Unknown=0, NotChecked=0, Total=812 [2020-10-05 23:08:37,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-05 23:08:37,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 145. [2020-10-05 23:08:37,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-05 23:08:37,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-05 23:08:37,728 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-05 23:08:37,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:37,728 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-05 23:08:37,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:37,728 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-05 23:08:37,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:37,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:37,729 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:37,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2020-10-05 23:08:37,930 INFO L427 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:37,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:37,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1702412028, now seen corresponding path program 73 times [2020-10-05 23:08:37,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:37,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270782338] [2020-10-05 23:08:37,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:38,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:38,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270782338] [2020-10-05 23:08:38,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291194679] [2020-10-05 23:08:38,012 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 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:38,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:38,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:38,164 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:08:38,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:38,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:38,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:38,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466957284] [2020-10-05 23:08:38,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:38,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:38,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:38,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:38,192 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-05 23:08:38,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:38,584 INFO L93 Difference]: Finished difference Result 202 states and 480 transitions. [2020-10-05 23:08:38,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:08:38,585 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:38,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:38,586 INFO L225 Difference]: With dead ends: 202 [2020-10-05 23:08:38,587 INFO L226 Difference]: Without dead ends: 197 [2020-10-05 23:08:38,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=212, Invalid=438, Unknown=0, NotChecked=0, Total=650 [2020-10-05 23:08:38,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-05 23:08:38,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 141. [2020-10-05 23:08:38,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-05 23:08:38,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 343 transitions. [2020-10-05 23:08:38,590 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 343 transitions. Word has length 13 [2020-10-05 23:08:38,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:38,590 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 343 transitions. [2020-10-05 23:08:38,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:38,591 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 343 transitions. [2020-10-05 23:08:38,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:38,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:38,591 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:38,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:38,792 INFO L427 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:38,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:38,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1702620348, now seen corresponding path program 74 times [2020-10-05 23:08:38,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:38,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639066725] [2020-10-05 23:08:38,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:38,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639066725] [2020-10-05 23:08:38,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179666013] [2020-10-05 23:08:38,872 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 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:38,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:38,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:38,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:38,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:39,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:39,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:39,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:39,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907811262] [2020-10-05 23:08:39,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:39,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:39,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:39,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:39,651 INFO L87 Difference]: Start difference. First operand 141 states and 343 transitions. Second operand 15 states. [2020-10-05 23:08:40,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:40,001 INFO L93 Difference]: Finished difference Result 198 states and 460 transitions. [2020-10-05 23:08:40,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:08:40,002 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:40,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:40,004 INFO L225 Difference]: With dead ends: 198 [2020-10-05 23:08:40,004 INFO L226 Difference]: Without dead ends: 196 [2020-10-05 23:08:40,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2020-10-05 23:08:40,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-05 23:08:40,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 143. [2020-10-05 23:08:40,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-05 23:08:40,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 350 transitions. [2020-10-05 23:08:40,010 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 350 transitions. Word has length 13 [2020-10-05 23:08:40,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:40,010 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 350 transitions. [2020-10-05 23:08:40,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:40,010 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 350 transitions. [2020-10-05 23:08:40,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:40,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:40,011 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:40,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2020-10-05 23:08:40,212 INFO L427 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:40,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:40,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1703283438, now seen corresponding path program 75 times [2020-10-05 23:08:40,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:40,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842415426] [2020-10-05 23:08:40,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:40,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:40,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842415426] [2020-10-05 23:08:40,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916296729] [2020-10-05 23:08:40,299 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 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:40,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:08:40,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:40,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:40,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:40,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:40,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:40,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64157790] [2020-10-05 23:08:40,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:40,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:40,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:40,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:40,523 INFO L87 Difference]: Start difference. First operand 143 states and 350 transitions. Second operand 15 states. [2020-10-05 23:08:40,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:40,996 INFO L93 Difference]: Finished difference Result 209 states and 491 transitions. [2020-10-05 23:08:40,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-05 23:08:40,997 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:40,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:40,999 INFO L225 Difference]: With dead ends: 209 [2020-10-05 23:08:40,999 INFO L226 Difference]: Without dead ends: 207 [2020-10-05 23:08:41,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=219, Invalid=483, Unknown=0, NotChecked=0, Total=702 [2020-10-05 23:08:41,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-05 23:08:41,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 145. [2020-10-05 23:08:41,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-05 23:08:41,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-05 23:08:41,004 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-05 23:08:41,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:41,004 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-05 23:08:41,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:41,004 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-05 23:08:41,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:41,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:41,005 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:41,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:41,213 INFO L427 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:41,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:41,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1703304797, now seen corresponding path program 76 times [2020-10-05 23:08:41,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:41,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547606692] [2020-10-05 23:08:41,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:41,301 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:41,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547606692] [2020-10-05 23:08:41,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395400234] [2020-10-05 23:08:41,302 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 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:41,342 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:08:41,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:41,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:41,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:41,477 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:08:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:41,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:41,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:41,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286553652] [2020-10-05 23:08:41,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:41,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:41,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:41,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:41,524 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-05 23:08:42,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:42,149 INFO L93 Difference]: Finished difference Result 217 states and 518 transitions. [2020-10-05 23:08:42,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 23:08:42,150 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:42,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:42,151 INFO L225 Difference]: With dead ends: 217 [2020-10-05 23:08:42,151 INFO L226 Difference]: Without dead ends: 212 [2020-10-05 23:08:42,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=306, Invalid=624, Unknown=0, NotChecked=0, Total=930 [2020-10-05 23:08:42,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-05 23:08:42,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 146. [2020-10-05 23:08:42,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-05 23:08:42,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-05 23:08:42,156 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 13 [2020-10-05 23:08:42,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:42,156 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-05 23:08:42,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:42,156 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-05 23:08:42,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:42,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:42,157 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:42,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-05 23:08:42,360 INFO L427 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:42,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:42,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1703305758, now seen corresponding path program 77 times [2020-10-05 23:08:42,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:42,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304137309] [2020-10-05 23:08:42,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:42,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:42,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304137309] [2020-10-05 23:08:42,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354664252] [2020-10-05 23:08:42,441 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 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:42,479 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:42,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:42,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:42,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:44,670 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:08:44,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:44,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:44,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:44,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586834692] [2020-10-05 23:08:44,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:44,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:44,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:44,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=144, Unknown=1, NotChecked=0, Total=210 [2020-10-05 23:08:44,725 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 15 states. [2020-10-05 23:08:49,099 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-05 23:08:53,354 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-10-05 23:08:53,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:53,924 INFO L93 Difference]: Finished difference Result 236 states and 562 transitions. [2020-10-05 23:08:53,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-05 23:08:53,924 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:53,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:53,926 INFO L225 Difference]: With dead ends: 236 [2020-10-05 23:08:53,926 INFO L226 Difference]: Without dead ends: 228 [2020-10-05 23:08:53,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=307, Invalid=684, Unknown=1, NotChecked=0, Total=992 [2020-10-05 23:08:53,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-05 23:08:53,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 141. [2020-10-05 23:08:53,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-05 23:08:53,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 346 transitions. [2020-10-05 23:08:53,930 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 346 transitions. Word has length 13 [2020-10-05 23:08:53,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:53,930 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 346 transitions. [2020-10-05 23:08:53,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:53,930 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 346 transitions. [2020-10-05 23:08:53,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:53,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:53,931 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:54,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-05 23:08:54,132 INFO L427 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:54,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:54,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1703334588, now seen corresponding path program 78 times [2020-10-05 23:08:54,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:54,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028464216] [2020-10-05 23:08:54,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:54,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:54,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028464216] [2020-10-05 23:08:54,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269401525] [2020-10-05 23:08:54,223 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 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:54,266 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 23:08:54,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:54,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:54,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:54,441 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:08:54,443 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:08:55,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:55,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:55,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-05 23:08:55,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214459784] [2020-10-05 23:08:55,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-05 23:08:55,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:55,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-05 23:08:55,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=171, Unknown=1, NotChecked=0, Total=240 [2020-10-05 23:08:55,937 INFO L87 Difference]: Start difference. First operand 141 states and 346 transitions. Second operand 16 states. [2020-10-05 23:08:57,667 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 39 [2020-10-05 23:09:05,103 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 46 [2020-10-05 23:09:08,563 WARN L193 SmtUtils]: Spent 3.40 s on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-05 23:09:53,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:09:53,113 INFO L93 Difference]: Finished difference Result 236 states and 556 transitions. [2020-10-05 23:09:53,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-05 23:09:53,114 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-10-05 23:09:53,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:09:53,115 INFO L225 Difference]: With dead ends: 236 [2020-10-05 23:09:53,116 INFO L226 Difference]: Without dead ends: 231 [2020-10-05 23:09:53,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=326, Invalid=785, Unknown=11, NotChecked=0, Total=1122 [2020-10-05 23:09:53,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-05 23:09:53,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 140. [2020-10-05 23:09:53,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 23:09:53,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 341 transitions. [2020-10-05 23:09:53,122 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 341 transitions. Word has length 13 [2020-10-05 23:09:53,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:09:53,123 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 341 transitions. [2020-10-05 23:09:53,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-05 23:09:53,123 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 341 transitions. [2020-10-05 23:09:53,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:09:53,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:09:53,124 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:09:53,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-05 23:09:53,333 INFO L427 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:09:53,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:09:53,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1709770188, now seen corresponding path program 79 times [2020-10-05 23:09:53,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:09:53,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077734193] [2020-10-05 23:09:53,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:09:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:53,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:53,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077734193] [2020-10-05 23:09:53,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273438461] [2020-10-05 23:09:53,427 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 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:53,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:09:53,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:09:53,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:53,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:09:53,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:09:53,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290549273] [2020-10-05 23:09:53,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:09:53,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:09:53,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:09:53,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:09:53,641 INFO L87 Difference]: Start difference. First operand 140 states and 341 transitions. Second operand 15 states. [2020-10-05 23:09:54,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:09:54,006 INFO L93 Difference]: Finished difference Result 197 states and 457 transitions. [2020-10-05 23:09:54,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:09:54,007 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:09:54,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:09:54,008 INFO L225 Difference]: With dead ends: 197 [2020-10-05 23:09:54,008 INFO L226 Difference]: Without dead ends: 195 [2020-10-05 23:09:54,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2020-10-05 23:09:54,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-05 23:09:54,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 143. [2020-10-05 23:09:54,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-05 23:09:54,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 352 transitions. [2020-10-05 23:09:54,013 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 352 transitions. Word has length 13 [2020-10-05 23:09:54,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:09:54,013 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 352 transitions. [2020-10-05 23:09:54,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:09:54,014 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 352 transitions. [2020-10-05 23:09:54,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:09:54,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:09:54,014 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:09:54,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:54,215 INFO L427 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:09:54,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:09:54,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1709771149, now seen corresponding path program 80 times [2020-10-05 23:09:54,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:09:54,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786558928] [2020-10-05 23:09:54,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:09:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:54,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:54,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786558928] [2020-10-05 23:09:54,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126889487] [2020-10-05 23:09:54,309 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 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:54,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:09:54,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:09:54,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:09:54,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:09:54,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:54,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:09:54,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:09:54,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081928374] [2020-10-05 23:09:54,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:09:54,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:09:54,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:09:54,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:09:54,513 INFO L87 Difference]: Start difference. First operand 143 states and 352 transitions. Second operand 15 states. [2020-10-05 23:09:54,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:09:54,884 INFO L93 Difference]: Finished difference Result 202 states and 467 transitions. [2020-10-05 23:09:54,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:09:54,886 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:09:54,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:09:54,887 INFO L225 Difference]: With dead ends: 202 [2020-10-05 23:09:54,887 INFO L226 Difference]: Without dead ends: 200 [2020-10-05 23:09:54,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2020-10-05 23:09:54,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-05 23:09:54,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 143. [2020-10-05 23:09:54,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-05 23:09:54,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 351 transitions. [2020-10-05 23:09:54,891 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 351 transitions. Word has length 13 [2020-10-05 23:09:54,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:09:54,891 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 351 transitions. [2020-10-05 23:09:54,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:09:54,892 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 351 transitions. [2020-10-05 23:09:54,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:09:54,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:09:54,892 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:09:55,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-10-05 23:09:55,093 INFO L427 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:09:55,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:09:55,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1709799979, now seen corresponding path program 81 times [2020-10-05 23:09:55,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:09:55,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505489545] [2020-10-05 23:09:55,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:09:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:55,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:55,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505489545] [2020-10-05 23:09:55,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183128050] [2020-10-05 23:09:55,192 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 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:55,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 23:09:55,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:09:55,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:09:55,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:09:55,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:55,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:09:55,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:09:55,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827135181] [2020-10-05 23:09:55,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:09:55,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:09:55,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:09:55,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:09:55,402 INFO L87 Difference]: Start difference. First operand 143 states and 351 transitions. Second operand 15 states. [2020-10-05 23:09:55,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:09:55,761 INFO L93 Difference]: Finished difference Result 197 states and 458 transitions. [2020-10-05 23:09:55,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:09:55,762 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:09:55,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:09:55,763 INFO L225 Difference]: With dead ends: 197 [2020-10-05 23:09:55,763 INFO L226 Difference]: Without dead ends: 195 [2020-10-05 23:09:55,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2020-10-05 23:09:55,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-05 23:09:55,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 142. [2020-10-05 23:09:55,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 23:09:55,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 348 transitions. [2020-10-05 23:09:55,771 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 348 transitions. Word has length 13 [2020-10-05 23:09:55,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:09:55,772 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 348 transitions. [2020-10-05 23:09:55,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:09:55,772 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 348 transitions. [2020-10-05 23:09:55,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:09:55,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:09:55,773 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:09:55,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,101 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:55,984 INFO L427 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:09:55,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:09:55,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1730325978, now seen corresponding path program 82 times [2020-10-05 23:09:55,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:09:55,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690208609] [2020-10-05 23:09:55,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:09:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:56,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:56,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690208609] [2020-10-05 23:09:56,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119127162] [2020-10-05 23:09:56,079 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 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:56,119 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:09:56,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:09:56,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:09:56,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:09:56,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:56,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:09:56,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:09:56,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191400995] [2020-10-05 23:09:56,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:09:56,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:09:56,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:09:56,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:09:56,307 INFO L87 Difference]: Start difference. First operand 142 states and 348 transitions. Second operand 15 states. [2020-10-05 23:09:56,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:09:56,905 INFO L93 Difference]: Finished difference Result 214 states and 496 transitions. [2020-10-05 23:09:56,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-05 23:09:56,906 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:09:56,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:09:56,907 INFO L225 Difference]: With dead ends: 214 [2020-10-05 23:09:56,907 INFO L226 Difference]: Without dead ends: 212 [2020-10-05 23:09:56,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=238, Invalid=574, Unknown=0, NotChecked=0, Total=812 [2020-10-05 23:09:56,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-05 23:09:56,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 144. [2020-10-05 23:09:56,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-05 23:09:56,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 356 transitions. [2020-10-05 23:09:56,912 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 356 transitions. Word has length 13 [2020-10-05 23:09:56,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:09:56,912 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 356 transitions. [2020-10-05 23:09:56,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:09:56,912 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 356 transitions. [2020-10-05 23:09:56,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:09:56,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:09:56,913 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:09:57,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-10-05 23:09:57,123 INFO L427 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:09:57,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:09:57,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1730326939, now seen corresponding path program 83 times [2020-10-05 23:09:57,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:09:57,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123703731] [2020-10-05 23:09:57,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:09:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:57,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:57,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123703731] [2020-10-05 23:09:57,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757522606] [2020-10-05 23:09:57,232 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 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:57,290 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:09:57,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:09:57,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:09:57,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:09:57,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:57,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:09:57,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:09:57,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119189421] [2020-10-05 23:09:57,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:09:57,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:09:57,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:09:57,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:09:57,534 INFO L87 Difference]: Start difference. First operand 144 states and 356 transitions. Second operand 15 states. [2020-10-05 23:09:58,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:09:58,350 INFO L93 Difference]: Finished difference Result 217 states and 502 transitions. [2020-10-05 23:09:58,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 23:09:58,351 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:09:58,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:09:58,353 INFO L225 Difference]: With dead ends: 217 [2020-10-05 23:09:58,353 INFO L226 Difference]: Without dead ends: 215 [2020-10-05 23:09:58,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2020-10-05 23:09:58,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-05 23:09:58,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 145. [2020-10-05 23:09:58,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-05 23:09:58,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 360 transitions. [2020-10-05 23:09:58,360 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 360 transitions. Word has length 13 [2020-10-05 23:09:58,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:09:58,360 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 360 transitions. [2020-10-05 23:09:58,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:09:58,361 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 360 transitions. [2020-10-05 23:09:58,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:09:58,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:09:58,362 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:09:58,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:58,578 INFO L427 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:09:58,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:09:58,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1730989068, now seen corresponding path program 84 times [2020-10-05 23:09:58,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:09:58,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501733606] [2020-10-05 23:09:58,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:09:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:58,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:58,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501733606] [2020-10-05 23:09:58,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615509289] [2020-10-05 23:09:58,705 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 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:58,771 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:09:58,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:09:58,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:09:58,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:09:58,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:58,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:09:58,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:09:58,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062481671] [2020-10-05 23:09:58,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:09:58,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:09:58,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:09:58,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:09:58,953 INFO L87 Difference]: Start difference. First operand 145 states and 360 transitions. Second operand 15 states. [2020-10-05 23:09:59,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:09:59,531 INFO L93 Difference]: Finished difference Result 211 states and 500 transitions. [2020-10-05 23:09:59,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-05 23:09:59,532 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:09:59,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:09:59,533 INFO L225 Difference]: With dead ends: 211 [2020-10-05 23:09:59,534 INFO L226 Difference]: Without dead ends: 209 [2020-10-05 23:09:59,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=253, Invalid=559, Unknown=0, NotChecked=0, Total=812 [2020-10-05 23:09:59,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-05 23:09:59,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 147. [2020-10-05 23:09:59,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-05 23:09:59,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-05 23:09:59,538 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-05 23:09:59,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:09:59,538 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-05 23:09:59,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:09:59,539 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-05 23:09:59,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:09:59,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:09:59,539 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:09:59,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,104 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:59,750 INFO L427 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:09:59,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:09:59,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1731010427, now seen corresponding path program 85 times [2020-10-05 23:09:59,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:09:59,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745023852] [2020-10-05 23:09:59,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:09:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:59,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:59,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745023852] [2020-10-05 23:09:59,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302298222] [2020-10-05 23:09:59,856 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 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:59,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:09:59,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:10:00,037 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:10:00,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:10:00,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:10:00,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:10:00,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448517634] [2020-10-05 23:10:00,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:10:00,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:10:00,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:10:00,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:10:00,052 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-05 23:10:00,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:10:00,689 INFO L93 Difference]: Finished difference Result 211 states and 507 transitions. [2020-10-05 23:10:00,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-05 23:10:00,690 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:10:00,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:10:00,691 INFO L225 Difference]: With dead ends: 211 [2020-10-05 23:10:00,691 INFO L226 Difference]: Without dead ends: 206 [2020-10-05 23:10:00,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=342, Invalid=714, Unknown=0, NotChecked=0, Total=1056 [2020-10-05 23:10:00,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-05 23:10:00,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 147. [2020-10-05 23:10:00,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-05 23:10:00,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-05 23:10:00,695 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-05 23:10:00,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:10:00,696 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-05 23:10:00,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:10:00,696 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-05 23:10:00,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:10:00,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:10:00,696 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:10:00,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable110 [2020-10-05 23:10:00,897 INFO L427 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:10:00,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:10:00,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1731011388, now seen corresponding path program 86 times [2020-10-05 23:10:00,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:10:00,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018976717] [2020-10-05 23:10:00,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:10:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:10:01,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:10:01,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018976717] [2020-10-05 23:10:01,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264543860] [2020-10-05 23:10:01,011 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 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:10:01,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:10:01,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:10:01,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:10:01,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:10:01,209 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:10:01,271 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:10:01,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:10:01,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:10:01,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129330170] [2020-10-05 23:10:01,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:10:01,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:10:01,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:10:01,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:10:01,273 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-05 23:10:02,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:10:02,078 INFO L93 Difference]: Finished difference Result 227 states and 546 transitions. [2020-10-05 23:10:02,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-05 23:10:02,079 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:10:02,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:10:02,080 INFO L225 Difference]: With dead ends: 227 [2020-10-05 23:10:02,080 INFO L226 Difference]: Without dead ends: 222 [2020-10-05 23:10:02,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=341, Invalid=781, Unknown=0, NotChecked=0, Total=1122 [2020-10-05 23:10:02,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-05 23:10:02,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 145. [2020-10-05 23:10:02,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-05 23:10:02,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 360 transitions. [2020-10-05 23:10:02,085 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 360 transitions. Word has length 13 [2020-10-05 23:10:02,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:10:02,085 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 360 transitions. [2020-10-05 23:10:02,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:10:02,085 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 360 transitions. [2020-10-05 23:10:02,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:10:02,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:10:02,085 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:10:02,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2020-10-05 23:10:02,286 INFO L427 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:10:02,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:10:02,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1731018859, now seen corresponding path program 87 times [2020-10-05 23:10:02,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:10:02,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776438909] [2020-10-05 23:10:02,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:10:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:10:02,401 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:10:02,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776438909] [2020-10-05 23:10:02,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747723433] [2020-10-05 23:10:02,402 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 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:10:02,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:10:02,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:10:02,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:10:02,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:10:02,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:10:02,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:10:02,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:10:02,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411029380] [2020-10-05 23:10:02,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:10:02,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:10:02,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:10:02,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:10:02,608 INFO L87 Difference]: Start difference. First operand 145 states and 360 transitions. Second operand 15 states. [2020-10-05 23:10:03,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:10:03,254 INFO L93 Difference]: Finished difference Result 221 states and 523 transitions. [2020-10-05 23:10:03,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-05 23:10:03,256 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:10:03,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:10:03,257 INFO L225 Difference]: With dead ends: 221 [2020-10-05 23:10:03,257 INFO L226 Difference]: Without dead ends: 219 [2020-10-05 23:10:03,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2020-10-05 23:10:03,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-05 23:10:03,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 147. [2020-10-05 23:10:03,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-05 23:10:03,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-05 23:10:03,262 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-05 23:10:03,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:10:03,262 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-05 23:10:03,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:10:03,262 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-05 23:10:03,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:10:03,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:10:03,263 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:10:03,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:10:03,464 INFO L427 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:10:03,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:10:03,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1731040218, now seen corresponding path program 88 times [2020-10-05 23:10:03,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:10:03,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945066646] [2020-10-05 23:10:03,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:10:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:10:03,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:10:03,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945066646] [2020-10-05 23:10:03,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354995520] [2020-10-05 23:10:03,579 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 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:10:03,633 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:10:03,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:10:03,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:10:03,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:10:03,779 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:10:03,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:10:03,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:10:03,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:10:03,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718010020] [2020-10-05 23:10:03,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:10:03,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:10:03,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:10:03,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:10:03,795 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-05 23:10:04,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:10:04,571 INFO L93 Difference]: Finished difference Result 240 states and 577 transitions. [2020-10-05 23:10:04,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 23:10:04,572 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:10:04,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:10:04,573 INFO L225 Difference]: With dead ends: 240 [2020-10-05 23:10:04,573 INFO L226 Difference]: Without dead ends: 232 [2020-10-05 23:10:04,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=365, Invalid=825, Unknown=0, NotChecked=0, Total=1190 [2020-10-05 23:10:04,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-05 23:10:04,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 148. [2020-10-05 23:10:04,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-05 23:10:04,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 372 transitions. [2020-10-05 23:10:04,577 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 372 transitions. Word has length 13 [2020-10-05 23:10:04,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:10:04,578 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 372 transitions. [2020-10-05 23:10:04,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:10:04,578 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 372 transitions. [2020-10-05 23:10:04,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:10:04,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:10:04,579 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:10:04,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2020-10-05 23:10:04,789 INFO L427 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:10:04,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:10:04,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1731041179, now seen corresponding path program 89 times [2020-10-05 23:10:04,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:10:04,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065861968] [2020-10-05 23:10:04,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:10:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:10:04,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:10:04,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065861968] [2020-10-05 23:10:04,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402713327] [2020-10-05 23:10:04,891 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 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:10:04,931 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:10:04,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:10:04,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:10:04,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:10:05,062 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:10:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:10:05,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:10:05,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:10:05,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312018786] [2020-10-05 23:10:05,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:10:05,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:10:05,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:10:05,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:10:05,084 INFO L87 Difference]: Start difference. First operand 148 states and 372 transitions. Second operand 15 states. [2020-10-05 23:10:05,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:10:05,931 INFO L93 Difference]: Finished difference Result 238 states and 576 transitions. [2020-10-05 23:10:05,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 23:10:05,932 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:10:05,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:10:05,933 INFO L225 Difference]: With dead ends: 238 [2020-10-05 23:10:05,933 INFO L226 Difference]: Without dead ends: 230 [2020-10-05 23:10:05,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=357, Invalid=833, Unknown=0, NotChecked=0, Total=1190 [2020-10-05 23:10:05,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-05 23:10:05,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 142. [2020-10-05 23:10:05,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 23:10:05,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions. [2020-10-05 23:10:05,937 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 13 [2020-10-05 23:10:05,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:10:05,937 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 354 transitions. [2020-10-05 23:10:05,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:10:05,937 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions. [2020-10-05 23:10:05,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:10:05,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:10:05,938 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:10:06,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2020-10-05 23:10:06,139 INFO L427 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:10:06,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:10:06,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1731249499, now seen corresponding path program 90 times [2020-10-05 23:10:06,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:10:06,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011174581] [2020-10-05 23:10:06,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:10:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:10:06,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:10:06,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011174581] [2020-10-05 23:10:06,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473608648] [2020-10-05 23:10:06,254 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 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:10:06,310 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 23:10:06,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:10:06,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:10:06,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:10:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:10:06,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:10:06,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:10:06,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425512388] [2020-10-05 23:10:06,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:10:06,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:10:06,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:10:06,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:10:06,600 INFO L87 Difference]: Start difference. First operand 142 states and 354 transitions. Second operand 15 states. [2020-10-05 23:10:07,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:10:07,170 INFO L93 Difference]: Finished difference Result 195 states and 459 transitions. [2020-10-05 23:10:07,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:10:07,172 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:10:07,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:10:07,174 INFO L225 Difference]: With dead ends: 195 [2020-10-05 23:10:07,174 INFO L226 Difference]: Without dead ends: 193 [2020-10-05 23:10:07,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2020-10-05 23:10:07,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-05 23:10:07,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 142. [2020-10-05 23:10:07,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 23:10:07,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions. [2020-10-05 23:10:07,181 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 13 [2020-10-05 23:10:07,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:10:07,182 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 354 transitions. [2020-10-05 23:10:07,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:10:07,182 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions. [2020-10-05 23:10:07,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:10:07,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:10:07,183 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:10:07,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2020-10-05 23:10:07,398 INFO L427 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:10:07,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:10:07,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1731912589, now seen corresponding path program 91 times [2020-10-05 23:10:07,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:10:07,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909394083] [2020-10-05 23:10:07,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:10:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:10:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:10:07,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909394083] [2020-10-05 23:10:07,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995092319] [2020-10-05 23:10:07,570 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 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:10:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:10:07,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:10:07,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:10:07,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:10:07,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:10:07,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:10:07,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665653921] [2020-10-05 23:10:07,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:10:07,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:10:07,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:10:07,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:10:07,861 INFO L87 Difference]: Start difference. First operand 142 states and 354 transitions. Second operand 15 states. [2020-10-05 23:10:08,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:10:08,583 INFO L93 Difference]: Finished difference Result 206 states and 489 transitions. [2020-10-05 23:10:08,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 23:10:08,584 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:10:08,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:10:08,585 INFO L225 Difference]: With dead ends: 206 [2020-10-05 23:10:08,585 INFO L226 Difference]: Without dead ends: 204 [2020-10-05 23:10:08,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=243, Invalid=569, Unknown=0, NotChecked=0, Total=812 [2020-10-05 23:10:08,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-05 23:10:08,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 143. [2020-10-05 23:10:08,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-05 23:10:08,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 356 transitions. [2020-10-05 23:10:08,589 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 356 transitions. Word has length 13 [2020-10-05 23:10:08,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:10:08,589 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 356 transitions. [2020-10-05 23:10:08,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:10:08,590 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 356 transitions. [2020-10-05 23:10:08,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:10:08,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:10:08,590 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:10:08,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:10:08,800 INFO L427 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:10:08,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:10:08,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1731934909, now seen corresponding path program 92 times [2020-10-05 23:10:08,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:10:08,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999429016] [2020-10-05 23:10:08,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:10:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:10:08,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:10:08,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999429016] [2020-10-05 23:10:08,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905060727] [2020-10-05 23:10:08,901 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 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:10:08,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:10:08,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:10:08,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:10:08,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:10:09,076 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:10:13,202 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-05 23:10:13,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:10:13,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:10:13,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-05 23:10:13,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308204875] [2020-10-05 23:10:13,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-05 23:10:13,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:10:13,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-05 23:10:13,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=174, Unknown=1, NotChecked=0, Total=240 [2020-10-05 23:10:13,205 INFO L87 Difference]: Start difference. First operand 143 states and 356 transitions. Second operand 16 states. [2020-10-05 23:10:15,036 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-05 23:10:35,823 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 29 [2020-10-05 23:11:04,502 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2020-10-05 23:11:18,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:18,390 INFO L93 Difference]: Finished difference Result 254 states and 595 transitions. [2020-10-05 23:11:18,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-05 23:11:18,391 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-10-05 23:11:18,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:18,392 INFO L225 Difference]: With dead ends: 254 [2020-10-05 23:11:18,392 INFO L226 Difference]: Without dead ends: 249 [2020-10-05 23:11:18,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 29.8s TimeCoverageRelationStatistics Valid=402, Invalid=995, Unknown=9, NotChecked=0, Total=1406 [2020-10-05 23:11:18,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-05 23:11:18,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 139. [2020-10-05 23:11:18,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-05 23:11:18,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 339 transitions. [2020-10-05 23:11:18,395 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 339 transitions. Word has length 13 [2020-10-05 23:11:18,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:18,396 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 339 transitions. [2020-10-05 23:11:18,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-05 23:11:18,396 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 339 transitions. [2020-10-05 23:11:18,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:18,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:18,396 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:18,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-10-05 23:11:18,605 INFO L427 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:18,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:18,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1931415228, now seen corresponding path program 93 times [2020-10-05 23:11:18,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:18,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717740573] [2020-10-05 23:11:18,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:18,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:18,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717740573] [2020-10-05 23:11:18,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867579258] [2020-10-05 23:11:18,689 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 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:18,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 23:11:18,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:18,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:18,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:18,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:18,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:18,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519159033] [2020-10-05 23:11:18,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:18,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:18,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:18,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:18,888 INFO L87 Difference]: Start difference. First operand 139 states and 339 transitions. Second operand 15 states. [2020-10-05 23:11:19,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:19,245 INFO L93 Difference]: Finished difference Result 192 states and 445 transitions. [2020-10-05 23:11:19,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-05 23:11:19,246 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:19,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:19,247 INFO L225 Difference]: With dead ends: 192 [2020-10-05 23:11:19,247 INFO L226 Difference]: Without dead ends: 190 [2020-10-05 23:11:19,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2020-10-05 23:11:19,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-05 23:11:19,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 141. [2020-10-05 23:11:19,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-05 23:11:19,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 345 transitions. [2020-10-05 23:11:19,250 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 345 transitions. Word has length 13 [2020-10-05 23:11:19,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:19,250 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 345 transitions. [2020-10-05 23:11:19,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:19,251 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 345 transitions. [2020-10-05 23:11:19,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:19,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:19,251 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:19,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-10-05 23:11:19,452 INFO L427 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:19,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:19,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1931416189, now seen corresponding path program 94 times [2020-10-05 23:11:19,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:19,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487689274] [2020-10-05 23:11:19,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:19,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:19,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487689274] [2020-10-05 23:11:19,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474786362] [2020-10-05 23:11:19,541 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 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:19,580 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:11:19,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:19,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:19,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:19,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:19,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:19,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926872526] [2020-10-05 23:11:19,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:19,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:19,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:19,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:19,760 INFO L87 Difference]: Start difference. First operand 141 states and 345 transitions. Second operand 15 states. [2020-10-05 23:11:20,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:20,146 INFO L93 Difference]: Finished difference Result 203 states and 467 transitions. [2020-10-05 23:11:20,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-05 23:11:20,147 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:20,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:20,147 INFO L225 Difference]: With dead ends: 203 [2020-10-05 23:11:20,147 INFO L226 Difference]: Without dead ends: 201 [2020-10-05 23:11:20,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-10-05 23:11:20,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-05 23:11:20,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 142. [2020-10-05 23:11:20,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 23:11:20,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 347 transitions. [2020-10-05 23:11:20,150 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 347 transitions. Word has length 13 [2020-10-05 23:11:20,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:20,150 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 347 transitions. [2020-10-05 23:11:20,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:20,150 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 347 transitions. [2020-10-05 23:11:20,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:20,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:20,151 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:20,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,114 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:20,351 INFO L427 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:20,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:20,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1931445019, now seen corresponding path program 95 times [2020-10-05 23:11:20,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:20,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13490965] [2020-10-05 23:11:20,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:20,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:20,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13490965] [2020-10-05 23:11:20,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058584318] [2020-10-05 23:11:20,439 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 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:20,480 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 23:11:20,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:20,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:20,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:20,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:20,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:20,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:20,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746981525] [2020-10-05 23:11:20,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:20,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:20,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:20,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:20,624 INFO L87 Difference]: Start difference. First operand 142 states and 347 transitions. Second operand 15 states. [2020-10-05 23:11:20,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:20,934 INFO L93 Difference]: Finished difference Result 194 states and 452 transitions. [2020-10-05 23:11:20,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 23:11:20,935 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:20,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:20,936 INFO L225 Difference]: With dead ends: 194 [2020-10-05 23:11:20,936 INFO L226 Difference]: Without dead ends: 192 [2020-10-05 23:11:20,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=393, Unknown=0, NotChecked=0, Total=552 [2020-10-05 23:11:20,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-05 23:11:20,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 137. [2020-10-05 23:11:20,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-05 23:11:20,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 334 transitions. [2020-10-05 23:11:20,940 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 334 transitions. Word has length 13 [2020-10-05 23:11:20,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:20,940 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 334 transitions. [2020-10-05 23:11:20,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:20,941 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 334 transitions. [2020-10-05 23:11:20,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:20,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:20,941 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:21,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:21,146 INFO L427 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:21,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:21,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1726322578, now seen corresponding path program 96 times [2020-10-05 23:11:21,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:21,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603290173] [2020-10-05 23:11:21,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:21,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:21,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603290173] [2020-10-05 23:11:21,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729871193] [2020-10-05 23:11:21,232 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 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:21,270 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 23:11:21,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:21,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:21,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:21,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:21,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:21,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:21,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198862248] [2020-10-05 23:11:21,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:21,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:21,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:21,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:21,420 INFO L87 Difference]: Start difference. First operand 137 states and 334 transitions. Second operand 15 states. [2020-10-05 23:11:22,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:22,013 INFO L93 Difference]: Finished difference Result 210 states and 483 transitions. [2020-10-05 23:11:22,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 23:11:22,014 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:22,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:22,014 INFO L225 Difference]: With dead ends: 210 [2020-10-05 23:11:22,014 INFO L226 Difference]: Without dead ends: 208 [2020-10-05 23:11:22,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=300, Invalid=756, Unknown=0, NotChecked=0, Total=1056 [2020-10-05 23:11:22,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-05 23:11:22,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 140. [2020-10-05 23:11:22,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 23:11:22,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 345 transitions. [2020-10-05 23:11:22,017 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 345 transitions. Word has length 13 [2020-10-05 23:11:22,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:22,017 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 345 transitions. [2020-10-05 23:11:22,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:22,017 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 345 transitions. [2020-10-05 23:11:22,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:22,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:22,018 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:22,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,116 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:22,219 INFO L427 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:22,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:22,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1726321617, now seen corresponding path program 97 times [2020-10-05 23:11:22,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:22,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113606277] [2020-10-05 23:11:22,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:22,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:22,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113606277] [2020-10-05 23:11:22,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401600664] [2020-10-05 23:11:22,318 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 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:22,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:22,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:22,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:22,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:22,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:22,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876574646] [2020-10-05 23:11:22,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:22,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:22,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:22,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:22,640 INFO L87 Difference]: Start difference. First operand 140 states and 345 transitions. Second operand 15 states. [2020-10-05 23:11:23,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:23,327 INFO L93 Difference]: Finished difference Result 219 states and 501 transitions. [2020-10-05 23:11:23,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-05 23:11:23,328 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:23,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:23,329 INFO L225 Difference]: With dead ends: 219 [2020-10-05 23:11:23,329 INFO L226 Difference]: Without dead ends: 217 [2020-10-05 23:11:23,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=246, Invalid=624, Unknown=0, NotChecked=0, Total=870 [2020-10-05 23:11:23,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-05 23:11:23,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 140. [2020-10-05 23:11:23,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 23:11:23,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 344 transitions. [2020-10-05 23:11:23,333 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 344 transitions. Word has length 13 [2020-10-05 23:11:23,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:23,333 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 344 transitions. [2020-10-05 23:11:23,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:23,333 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 344 transitions. [2020-10-05 23:11:23,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:23,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:23,334 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:23,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:23,544 INFO L427 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:23,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:23,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1726292787, now seen corresponding path program 98 times [2020-10-05 23:11:23,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:23,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016113013] [2020-10-05 23:11:23,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:23,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:23,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016113013] [2020-10-05 23:11:23,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470095258] [2020-10-05 23:11:23,624 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 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:23,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:11:23,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:23,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:23,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:23,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:23,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:23,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:23,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798170857] [2020-10-05 23:11:23,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:23,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:23,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:23,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:23,793 INFO L87 Difference]: Start difference. First operand 140 states and 344 transitions. Second operand 15 states. [2020-10-05 23:11:24,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:24,265 INFO L93 Difference]: Finished difference Result 196 states and 455 transitions. [2020-10-05 23:11:24,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-05 23:11:24,265 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:24,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:24,266 INFO L225 Difference]: With dead ends: 196 [2020-10-05 23:11:24,266 INFO L226 Difference]: Without dead ends: 194 [2020-10-05 23:11:24,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=225, Invalid=587, Unknown=0, NotChecked=0, Total=812 [2020-10-05 23:11:24,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-05 23:11:24,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 139. [2020-10-05 23:11:24,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-05 23:11:24,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 341 transitions. [2020-10-05 23:11:24,269 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 341 transitions. Word has length 13 [2020-10-05 23:11:24,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:24,270 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 341 transitions. [2020-10-05 23:11:24,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:24,270 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 341 transitions. [2020-10-05 23:11:24,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:24,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:24,270 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:24,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-10-05 23:11:24,471 INFO L427 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:24,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:24,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1705766788, now seen corresponding path program 99 times [2020-10-05 23:11:24,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:24,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037385790] [2020-10-05 23:11:24,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:24,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:24,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037385790] [2020-10-05 23:11:24,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429774078] [2020-10-05 23:11:24,559 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 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:24,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 23:11:24,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:24,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:24,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:24,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:24,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:24,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164481369] [2020-10-05 23:11:24,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:24,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:24,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:24,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:24,743 INFO L87 Difference]: Start difference. First operand 139 states and 341 transitions. Second operand 15 states. [2020-10-05 23:11:25,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:25,398 INFO L93 Difference]: Finished difference Result 211 states and 490 transitions. [2020-10-05 23:11:25,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 23:11:25,399 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:25,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:25,400 INFO L225 Difference]: With dead ends: 211 [2020-10-05 23:11:25,400 INFO L226 Difference]: Without dead ends: 209 [2020-10-05 23:11:25,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=337, Invalid=785, Unknown=0, NotChecked=0, Total=1122 [2020-10-05 23:11:25,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-05 23:11:25,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 141. [2020-10-05 23:11:25,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-05 23:11:25,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 349 transitions. [2020-10-05 23:11:25,403 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 349 transitions. Word has length 13 [2020-10-05 23:11:25,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:25,404 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 349 transitions. [2020-10-05 23:11:25,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:25,404 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 349 transitions. [2020-10-05 23:11:25,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:25,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:25,404 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:25,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-10-05 23:11:25,605 INFO L427 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:25,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:25,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1705765827, now seen corresponding path program 100 times [2020-10-05 23:11:25,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:25,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311447256] [2020-10-05 23:11:25,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:25,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:25,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311447256] [2020-10-05 23:11:25,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712445358] [2020-10-05 23:11:25,693 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 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:25,732 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:11:25,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:25,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:25,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:25,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:25,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:25,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:25,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683112106] [2020-10-05 23:11:25,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:25,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:25,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:25,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:25,892 INFO L87 Difference]: Start difference. First operand 141 states and 349 transitions. Second operand 15 states. [2020-10-05 23:11:26,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:26,543 INFO L93 Difference]: Finished difference Result 215 states and 498 transitions. [2020-10-05 23:11:26,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-05 23:11:26,544 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:26,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:26,544 INFO L225 Difference]: With dead ends: 215 [2020-10-05 23:11:26,544 INFO L226 Difference]: Without dead ends: 213 [2020-10-05 23:11:26,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=302, Invalid=754, Unknown=0, NotChecked=0, Total=1056 [2020-10-05 23:11:26,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-05 23:11:26,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 142. [2020-10-05 23:11:26,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 23:11:26,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 353 transitions. [2020-10-05 23:11:26,548 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 353 transitions. Word has length 13 [2020-10-05 23:11:26,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:26,548 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 353 transitions. [2020-10-05 23:11:26,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:26,548 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 353 transitions. [2020-10-05 23:11:26,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:26,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:26,549 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:26,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-10-05 23:11:26,750 INFO L427 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:26,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:26,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1705103698, now seen corresponding path program 101 times [2020-10-05 23:11:26,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:26,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246926139] [2020-10-05 23:11:26,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:26,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:26,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246926139] [2020-10-05 23:11:26,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605284643] [2020-10-05 23:11:26,838 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 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:26,877 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 23:11:26,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:26,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:26,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:27,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:27,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:27,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:27,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958061214] [2020-10-05 23:11:27,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:27,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:27,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:27,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:27,034 INFO L87 Difference]: Start difference. First operand 142 states and 353 transitions. Second operand 15 states. [2020-10-05 23:11:27,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:27,720 INFO L93 Difference]: Finished difference Result 202 states and 480 transitions. [2020-10-05 23:11:27,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-05 23:11:27,721 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:27,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:27,722 INFO L225 Difference]: With dead ends: 202 [2020-10-05 23:11:27,722 INFO L226 Difference]: Without dead ends: 200 [2020-10-05 23:11:27,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2020-10-05 23:11:27,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-05 23:11:27,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 144. [2020-10-05 23:11:27,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-05 23:11:27,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-05 23:11:27,726 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-05 23:11:27,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:27,727 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-05 23:11:27,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:27,727 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-05 23:11:27,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:27,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:27,728 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:27,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:27,940 INFO L427 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:27,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:27,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1705082339, now seen corresponding path program 102 times [2020-10-05 23:11:27,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:27,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186296808] [2020-10-05 23:11:27,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:28,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:28,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186296808] [2020-10-05 23:11:28,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058620710] [2020-10-05 23:11:28,020 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 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:28,066 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 23:11:28,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:28,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:28,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:28,189 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:11:28,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:28,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:28,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:28,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856574475] [2020-10-05 23:11:28,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:28,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:28,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:28,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:28,204 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-05 23:11:28,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:28,820 INFO L93 Difference]: Finished difference Result 196 states and 472 transitions. [2020-10-05 23:11:28,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-05 23:11:28,820 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:28,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:28,821 INFO L225 Difference]: With dead ends: 196 [2020-10-05 23:11:28,821 INFO L226 Difference]: Without dead ends: 191 [2020-10-05 23:11:28,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=382, Invalid=808, Unknown=0, NotChecked=0, Total=1190 [2020-10-05 23:11:28,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-05 23:11:28,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 144. [2020-10-05 23:11:28,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-05 23:11:28,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-05 23:11:28,826 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-05 23:11:28,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:28,826 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-05 23:11:28,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:28,827 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-05 23:11:28,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:28,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:28,827 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:29,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2020-10-05 23:11:29,031 INFO L427 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:29,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:29,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1705081378, now seen corresponding path program 103 times [2020-10-05 23:11:29,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:29,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65830619] [2020-10-05 23:11:29,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:29,125 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:29,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65830619] [2020-10-05 23:11:29,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720107379] [2020-10-05 23:11:29,126 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 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:29,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:29,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:29,340 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:11:29,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:29,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:29,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:29,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562125118] [2020-10-05 23:11:29,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:29,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:29,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:29,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:29,380 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-05 23:11:30,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:30,520 INFO L93 Difference]: Finished difference Result 227 states and 547 transitions. [2020-10-05 23:11:30,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-05 23:11:30,521 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:30,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:30,522 INFO L225 Difference]: With dead ends: 227 [2020-10-05 23:11:30,522 INFO L226 Difference]: Without dead ends: 222 [2020-10-05 23:11:30,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=413, Invalid=993, Unknown=0, NotChecked=0, Total=1406 [2020-10-05 23:11:30,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-05 23:11:30,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 142. [2020-10-05 23:11:30,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 23:11:30,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 353 transitions. [2020-10-05 23:11:30,526 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 353 transitions. Word has length 13 [2020-10-05 23:11:30,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:30,527 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 353 transitions. [2020-10-05 23:11:30,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:30,527 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 353 transitions. [2020-10-05 23:11:30,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:30,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:30,527 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:30,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:30,738 INFO L427 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:30,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:30,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1705073907, now seen corresponding path program 104 times [2020-10-05 23:11:30,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:30,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829621564] [2020-10-05 23:11:30,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:30,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:30,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829621564] [2020-10-05 23:11:30,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764510336] [2020-10-05 23:11:30,826 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 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:30,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:11:30,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:30,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:30,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:31,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:31,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:31,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:31,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437225998] [2020-10-05 23:11:31,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:31,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:31,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:31,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:31,093 INFO L87 Difference]: Start difference. First operand 142 states and 353 transitions. Second operand 15 states. [2020-10-05 23:11:31,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:31,878 INFO L93 Difference]: Finished difference Result 226 states and 535 transitions. [2020-10-05 23:11:31,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-05 23:11:31,879 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:31,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:31,880 INFO L225 Difference]: With dead ends: 226 [2020-10-05 23:11:31,880 INFO L226 Difference]: Without dead ends: 224 [2020-10-05 23:11:31,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=356, Invalid=904, Unknown=0, NotChecked=0, Total=1260 [2020-10-05 23:11:31,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-05 23:11:31,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 144. [2020-10-05 23:11:31,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-05 23:11:31,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-05 23:11:31,884 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-05 23:11:31,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:31,884 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-05 23:11:31,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:31,884 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-05 23:11:31,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:31,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:31,884 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:32,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2020-10-05 23:11:32,085 INFO L427 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:32,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:32,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1705052548, now seen corresponding path program 105 times [2020-10-05 23:11:32,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:32,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477921863] [2020-10-05 23:11:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:32,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:32,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477921863] [2020-10-05 23:11:32,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773475427] [2020-10-05 23:11:32,173 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 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:32,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 23:11:32,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:32,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:32,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:32,351 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:11:32,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:32,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:32,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:32,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649281212] [2020-10-05 23:11:32,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:32,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:32,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:32,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:32,389 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-05 23:11:33,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:33,429 INFO L93 Difference]: Finished difference Result 247 states and 597 transitions. [2020-10-05 23:11:33,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-05 23:11:33,429 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:33,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:33,430 INFO L225 Difference]: With dead ends: 247 [2020-10-05 23:11:33,430 INFO L226 Difference]: Without dead ends: 239 [2020-10-05 23:11:33,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=448, Invalid=1034, Unknown=0, NotChecked=0, Total=1482 [2020-10-05 23:11:33,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-05 23:11:33,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 146. [2020-10-05 23:11:33,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-05 23:11:33,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions. [2020-10-05 23:11:33,435 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 13 [2020-10-05 23:11:33,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:33,435 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 370 transitions. [2020-10-05 23:11:33,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:33,435 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions. [2020-10-05 23:11:33,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:33,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:33,436 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:33,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,125 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:33,636 INFO L427 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:33,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:33,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1705051587, now seen corresponding path program 106 times [2020-10-05 23:11:33,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:33,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93262079] [2020-10-05 23:11:33,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:33,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:33,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93262079] [2020-10-05 23:11:33,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272622492] [2020-10-05 23:11:33,726 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 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:33,763 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:11:33,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:33,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:33,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:33,891 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:11:33,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:33,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:33,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:33,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194579505] [2020-10-05 23:11:33,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:33,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:33,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:33,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:33,920 INFO L87 Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 15 states. [2020-10-05 23:11:34,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:34,926 INFO L93 Difference]: Finished difference Result 246 states and 590 transitions. [2020-10-05 23:11:34,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-05 23:11:34,927 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:34,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:34,928 INFO L225 Difference]: With dead ends: 246 [2020-10-05 23:11:34,929 INFO L226 Difference]: Without dead ends: 238 [2020-10-05 23:11:34,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=426, Invalid=1056, Unknown=0, NotChecked=0, Total=1482 [2020-10-05 23:11:34,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-05 23:11:34,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 139. [2020-10-05 23:11:34,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-05 23:11:34,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 344 transitions. [2020-10-05 23:11:34,933 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 344 transitions. Word has length 13 [2020-10-05 23:11:34,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:34,933 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 344 transitions. [2020-10-05 23:11:34,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:34,933 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 344 transitions. [2020-10-05 23:11:34,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:34,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:34,934 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:35,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable131 [2020-10-05 23:11:35,144 INFO L427 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:35,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:35,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1704843267, now seen corresponding path program 107 times [2020-10-05 23:11:35,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:35,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653696814] [2020-10-05 23:11:35,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:35,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:35,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653696814] [2020-10-05 23:11:35,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419930607] [2020-10-05 23:11:35,238 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 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:35,277 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 23:11:35,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:35,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:35,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:35,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:35,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:35,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:35,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176464426] [2020-10-05 23:11:35,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:35,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:35,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:35,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:35,409 INFO L87 Difference]: Start difference. First operand 139 states and 344 transitions. Second operand 15 states. [2020-10-05 23:11:35,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:35,973 INFO L93 Difference]: Finished difference Result 209 states and 489 transitions. [2020-10-05 23:11:35,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-05 23:11:35,974 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:35,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:35,974 INFO L225 Difference]: With dead ends: 209 [2020-10-05 23:11:35,974 INFO L226 Difference]: Without dead ends: 207 [2020-10-05 23:11:35,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=258, Invalid=672, Unknown=0, NotChecked=0, Total=930 [2020-10-05 23:11:35,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-05 23:11:35,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 136. [2020-10-05 23:11:35,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-05 23:11:35,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 337 transitions. [2020-10-05 23:11:35,977 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 337 transitions. Word has length 13 [2020-10-05 23:11:35,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:35,978 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 337 transitions. [2020-10-05 23:11:35,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:35,978 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 337 transitions. [2020-10-05 23:11:35,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:35,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:35,979 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:36,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,127 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:36,179 INFO L427 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:36,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:36,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1704180177, now seen corresponding path program 108 times [2020-10-05 23:11:36,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:36,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865962254] [2020-10-05 23:11:36,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:36,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:36,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865962254] [2020-10-05 23:11:36,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240376986] [2020-10-05 23:11:36,270 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 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:36,315 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 23:11:36,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:36,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:36,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:36,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:36,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:36,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:36,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961633072] [2020-10-05 23:11:36,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:36,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:36,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:36,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:36,455 INFO L87 Difference]: Start difference. First operand 136 states and 337 transitions. Second operand 15 states. [2020-10-05 23:11:37,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:37,162 INFO L93 Difference]: Finished difference Result 205 states and 487 transitions. [2020-10-05 23:11:37,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 23:11:37,163 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:37,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:37,163 INFO L225 Difference]: With dead ends: 205 [2020-10-05 23:11:37,164 INFO L226 Difference]: Without dead ends: 203 [2020-10-05 23:11:37,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=329, Invalid=793, Unknown=0, NotChecked=0, Total=1122 [2020-10-05 23:11:37,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-05 23:11:37,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 137. [2020-10-05 23:11:37,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-05 23:11:37,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 341 transitions. [2020-10-05 23:11:37,166 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 341 transitions. Word has length 13 [2020-10-05 23:11:37,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:37,167 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 341 transitions. [2020-10-05 23:11:37,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:37,167 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 341 transitions. [2020-10-05 23:11:37,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:37,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:37,167 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:37,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-10-05 23:11:37,368 INFO L427 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:37,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:37,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1704158818, now seen corresponding path program 109 times [2020-10-05 23:11:37,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:37,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100766445] [2020-10-05 23:11:37,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:37,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:37,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100766445] [2020-10-05 23:11:37,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678059069] [2020-10-05 23:11:37,458 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 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:37,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:37,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:37,614 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:11:37,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:37,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:37,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:37,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053714807] [2020-10-05 23:11:37,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:37,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:37,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:37,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:37,628 INFO L87 Difference]: Start difference. First operand 137 states and 341 transitions. Second operand 15 states. [2020-10-05 23:11:38,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:38,582 INFO L93 Difference]: Finished difference Result 228 states and 547 transitions. [2020-10-05 23:11:38,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-05 23:11:38,584 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:38,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:38,585 INFO L225 Difference]: With dead ends: 228 [2020-10-05 23:11:38,585 INFO L226 Difference]: Without dead ends: 220 [2020-10-05 23:11:38,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=520, Invalid=1286, Unknown=0, NotChecked=0, Total=1806 [2020-10-05 23:11:38,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-05 23:11:38,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 137. [2020-10-05 23:11:38,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-05 23:11:38,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 341 transitions. [2020-10-05 23:11:38,588 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 341 transitions. Word has length 13 [2020-10-05 23:11:38,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:38,588 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 341 transitions. [2020-10-05 23:11:38,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:38,589 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 341 transitions. [2020-10-05 23:11:38,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:38,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:38,589 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:38,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-10-05 23:11:38,790 INFO L427 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:38,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:38,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1704157857, now seen corresponding path program 110 times [2020-10-05 23:11:38,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:38,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730271355] [2020-10-05 23:11:38,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:38,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:38,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730271355] [2020-10-05 23:11:38,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129157402] [2020-10-05 23:11:38,885 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 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:38,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:11:38,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:38,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:38,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:39,036 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:11:39,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:39,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:39,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:39,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089190657] [2020-10-05 23:11:39,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:39,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:39,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:39,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:39,054 INFO L87 Difference]: Start difference. First operand 137 states and 341 transitions. Second operand 15 states. [2020-10-05 23:11:39,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:39,905 INFO L93 Difference]: Finished difference Result 228 states and 550 transitions. [2020-10-05 23:11:39,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-05 23:11:39,906 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:39,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:39,906 INFO L225 Difference]: With dead ends: 228 [2020-10-05 23:11:39,906 INFO L226 Difference]: Without dead ends: 220 [2020-10-05 23:11:39,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=407, Invalid=999, Unknown=0, NotChecked=0, Total=1406 [2020-10-05 23:11:39,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-05 23:11:39,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 133. [2020-10-05 23:11:39,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-05 23:11:39,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 324 transitions. [2020-10-05 23:11:39,909 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 324 transitions. Word has length 13 [2020-10-05 23:11:39,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:39,909 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 324 transitions. [2020-10-05 23:11:39,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:39,909 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 324 transitions. [2020-10-05 23:11:39,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:39,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:39,910 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:40,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-10-05 23:11:40,111 INFO L427 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:40,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:40,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1704129027, now seen corresponding path program 111 times [2020-10-05 23:11:40,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:40,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655607364] [2020-10-05 23:11:40,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:40,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:40,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655607364] [2020-10-05 23:11:40,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141355652] [2020-10-05 23:11:40,204 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 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:40,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:11:40,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:40,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:40,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:40,366 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:11:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:40,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:40,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:40,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561711550] [2020-10-05 23:11:40,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:40,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:40,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:40,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:40,380 INFO L87 Difference]: Start difference. First operand 133 states and 324 transitions. Second operand 15 states. [2020-10-05 23:11:41,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:41,298 INFO L93 Difference]: Finished difference Result 224 states and 533 transitions. [2020-10-05 23:11:41,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-05 23:11:41,298 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:41,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:41,299 INFO L225 Difference]: With dead ends: 224 [2020-10-05 23:11:41,299 INFO L226 Difference]: Without dead ends: 216 [2020-10-05 23:11:41,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=403, Invalid=1003, Unknown=0, NotChecked=0, Total=1406 [2020-10-05 23:11:41,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-05 23:11:41,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 130. [2020-10-05 23:11:41,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-05 23:11:41,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 305 transitions. [2020-10-05 23:11:41,303 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 305 transitions. Word has length 13 [2020-10-05 23:11:41,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:41,304 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 305 transitions. [2020-10-05 23:11:41,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:41,304 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 305 transitions. [2020-10-05 23:11:41,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:41,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:41,304 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:41,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:41,515 INFO L427 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:41,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:41,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1141268816, now seen corresponding path program 6 times [2020-10-05 23:11:41,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:41,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691878227] [2020-10-05 23:11:41,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:41,634 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:41,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691878227] [2020-10-05 23:11:41,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783095479] [2020-10-05 23:11:41,634 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 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:41,673 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-05 23:11:41,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:41,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:41,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:41,860 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:11:41,907 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:41,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:41,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-05 23:11:41,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43272354] [2020-10-05 23:11:41,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-05 23:11:41,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:41,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-05 23:11:41,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-05 23:11:41,910 INFO L87 Difference]: Start difference. First operand 130 states and 305 transitions. Second operand 18 states. [2020-10-05 23:11:42,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:42,211 INFO L93 Difference]: Finished difference Result 185 states and 431 transitions. [2020-10-05 23:11:42,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 23:11:42,212 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 13 [2020-10-05 23:11:42,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:42,213 INFO L225 Difference]: With dead ends: 185 [2020-10-05 23:11:42,213 INFO L226 Difference]: Without dead ends: 180 [2020-10-05 23:11:42,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-05 23:11:42,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-05 23:11:42,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 139. [2020-10-05 23:11:42,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-05 23:11:42,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 341 transitions. [2020-10-05 23:11:42,217 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 341 transitions. Word has length 13 [2020-10-05 23:11:42,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:42,217 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 341 transitions. [2020-10-05 23:11:42,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-05 23:11:42,217 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 341 transitions. [2020-10-05 23:11:42,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:42,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:42,218 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:42,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,132 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:42,426 INFO L427 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:42,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:42,427 INFO L82 PathProgramCache]: Analyzing trace with hash 33766584, now seen corresponding path program 21 times [2020-10-05 23:11:42,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:42,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343801721] [2020-10-05 23:11:42,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:42,552 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:42,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343801721] [2020-10-05 23:11:42,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795856425] [2020-10-05 23:11:42,552 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 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:42,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-05 23:11:42,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:42,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:42,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:42,774 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:42,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:42,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:42,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063642464] [2020-10-05 23:11:42,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:42,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:42,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:42,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:42,775 INFO L87 Difference]: Start difference. First operand 139 states and 341 transitions. Second operand 17 states. [2020-10-05 23:11:43,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:43,022 INFO L93 Difference]: Finished difference Result 186 states and 435 transitions. [2020-10-05 23:11:43,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:11:43,023 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-05 23:11:43,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:43,024 INFO L225 Difference]: With dead ends: 186 [2020-10-05 23:11:43,024 INFO L226 Difference]: Without dead ends: 183 [2020-10-05 23:11:43,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-10-05 23:11:43,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-05 23:11:43,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 148. [2020-10-05 23:11:43,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-05 23:11:43,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 362 transitions. [2020-10-05 23:11:43,027 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 362 transitions. Word has length 13 [2020-10-05 23:11:43,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:43,027 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 362 transitions. [2020-10-05 23:11:43,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:43,028 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 362 transitions. [2020-10-05 23:11:43,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:43,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:43,028 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:43,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-10-05 23:11:43,229 INFO L427 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:43,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:43,229 INFO L82 PathProgramCache]: Analyzing trace with hash -913710200, now seen corresponding path program 22 times [2020-10-05 23:11:43,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:43,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741611175] [2020-10-05 23:11:43,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:43,341 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:43,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741611175] [2020-10-05 23:11:43,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86959856] [2020-10-05 23:11:43,341 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 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:43,380 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:11:43,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:43,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:43,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:43,584 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:43,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:43,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:43,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234090644] [2020-10-05 23:11:43,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:43,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:43,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:43,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:43,586 INFO L87 Difference]: Start difference. First operand 148 states and 362 transitions. Second operand 17 states. [2020-10-05 23:11:43,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:43,954 INFO L93 Difference]: Finished difference Result 203 states and 468 transitions. [2020-10-05 23:11:43,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-05 23:11:43,955 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-05 23:11:43,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:43,956 INFO L225 Difference]: With dead ends: 203 [2020-10-05 23:11:43,956 INFO L226 Difference]: Without dead ends: 200 [2020-10-05 23:11:43,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2020-10-05 23:11:43,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-05 23:11:43,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 148. [2020-10-05 23:11:43,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-05 23:11:43,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 362 transitions. [2020-10-05 23:11:43,960 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 362 transitions. Word has length 13 [2020-10-05 23:11:43,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:43,960 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 362 transitions. [2020-10-05 23:11:43,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:43,960 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 362 transitions. [2020-10-05 23:11:43,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:43,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:43,961 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:44,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2020-10-05 23:11:44,167 INFO L427 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:44,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:44,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1775557960, now seen corresponding path program 23 times [2020-10-05 23:11:44,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:44,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590453674] [2020-10-05 23:11:44,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:44,275 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:44,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590453674] [2020-10-05 23:11:44,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316558089] [2020-10-05 23:11:44,275 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 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:44,316 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-05 23:11:44,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:44,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:44,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:44,524 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:44,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:44,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:44,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430526171] [2020-10-05 23:11:44,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:44,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:44,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:44,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:44,526 INFO L87 Difference]: Start difference. First operand 148 states and 362 transitions. Second operand 17 states. [2020-10-05 23:11:45,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:45,065 INFO L93 Difference]: Finished difference Result 211 states and 486 transitions. [2020-10-05 23:11:45,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 23:11:45,066 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-05 23:11:45,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:45,067 INFO L225 Difference]: With dead ends: 211 [2020-10-05 23:11:45,067 INFO L226 Difference]: Without dead ends: 208 [2020-10-05 23:11:45,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=235, Invalid=635, Unknown=0, NotChecked=0, Total=870 [2020-10-05 23:11:45,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-05 23:11:45,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 149. [2020-10-05 23:11:45,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-05 23:11:45,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 367 transitions. [2020-10-05 23:11:45,071 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 367 transitions. Word has length 13 [2020-10-05 23:11:45,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:45,071 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 367 transitions. [2020-10-05 23:11:45,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:45,071 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 367 transitions. [2020-10-05 23:11:45,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:45,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:45,072 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:45,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:45,282 INFO L427 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:45,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:45,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1110622840, now seen corresponding path program 24 times [2020-10-05 23:11:45,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:45,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126887847] [2020-10-05 23:11:45,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:45,381 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:45,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126887847] [2020-10-05 23:11:45,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490028758] [2020-10-05 23:11:45,382 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 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:45,462 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-05 23:11:45,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:45,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:45,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:45,722 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:45,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:45,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:45,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508317426] [2020-10-05 23:11:45,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:45,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:45,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:45,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:45,725 INFO L87 Difference]: Start difference. First operand 149 states and 367 transitions. Second operand 17 states. [2020-10-05 23:11:46,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:46,378 INFO L93 Difference]: Finished difference Result 213 states and 492 transitions. [2020-10-05 23:11:46,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-05 23:11:46,379 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-05 23:11:46,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:46,380 INFO L225 Difference]: With dead ends: 213 [2020-10-05 23:11:46,380 INFO L226 Difference]: Without dead ends: 210 [2020-10-05 23:11:46,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=276, Invalid=716, Unknown=0, NotChecked=0, Total=992 [2020-10-05 23:11:46,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-05 23:11:46,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 150. [2020-10-05 23:11:46,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-05 23:11:46,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 372 transitions. [2020-10-05 23:11:46,385 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 372 transitions. Word has length 13 [2020-10-05 23:11:46,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:46,385 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 372 transitions. [2020-10-05 23:11:46,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:46,385 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 372 transitions. [2020-10-05 23:11:46,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:46,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:46,386 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:46,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,136 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:46,596 INFO L427 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:46,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:46,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1089173320, now seen corresponding path program 25 times [2020-10-05 23:11:46,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:46,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386100373] [2020-10-05 23:11:46,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:46,698 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:46,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386100373] [2020-10-05 23:11:46,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921318958] [2020-10-05 23:11:46,698 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 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:46,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:46,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:46,912 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:46,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:46,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:46,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008953583] [2020-10-05 23:11:46,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:46,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:46,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:46,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:46,914 INFO L87 Difference]: Start difference. First operand 150 states and 372 transitions. Second operand 17 states. [2020-10-05 23:11:47,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:47,431 INFO L93 Difference]: Finished difference Result 207 states and 482 transitions. [2020-10-05 23:11:47,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-05 23:11:47,432 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-05 23:11:47,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:47,432 INFO L225 Difference]: With dead ends: 207 [2020-10-05 23:11:47,432 INFO L226 Difference]: Without dead ends: 204 [2020-10-05 23:11:47,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=267, Invalid=663, Unknown=0, NotChecked=0, Total=930 [2020-10-05 23:11:47,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-05 23:11:47,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 152. [2020-10-05 23:11:47,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-05 23:11:47,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 379 transitions. [2020-10-05 23:11:47,435 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 379 transitions. Word has length 13 [2020-10-05 23:11:47,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:47,436 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 379 transitions. [2020-10-05 23:11:47,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:47,436 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 379 transitions. [2020-10-05 23:11:47,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:47,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:47,436 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:47,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:47,637 INFO L427 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:47,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:47,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1088481400, now seen corresponding path program 26 times [2020-10-05 23:11:47,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:47,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415027450] [2020-10-05 23:11:47,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:47,731 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:47,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415027450] [2020-10-05 23:11:47,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096256828] [2020-10-05 23:11:47,732 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 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:47,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:11:47,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:47,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:47,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:47,935 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:47,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:47,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:47,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097386505] [2020-10-05 23:11:47,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:47,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:47,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:47,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:47,937 INFO L87 Difference]: Start difference. First operand 152 states and 379 transitions. Second operand 17 states. [2020-10-05 23:11:48,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:48,307 INFO L93 Difference]: Finished difference Result 197 states and 464 transitions. [2020-10-05 23:11:48,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:11:48,308 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-05 23:11:48,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:48,309 INFO L225 Difference]: With dead ends: 197 [2020-10-05 23:11:48,309 INFO L226 Difference]: Without dead ends: 194 [2020-10-05 23:11:48,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=221, Invalid=535, Unknown=0, NotChecked=0, Total=756 [2020-10-05 23:11:48,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-05 23:11:48,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 154. [2020-10-05 23:11:48,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-05 23:11:48,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 386 transitions. [2020-10-05 23:11:48,313 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 386 transitions. Word has length 13 [2020-10-05 23:11:48,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:48,313 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 386 transitions. [2020-10-05 23:11:48,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:48,313 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 386 transitions. [2020-10-05 23:11:48,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:48,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:48,314 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:48,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable143 [2020-10-05 23:11:48,523 INFO L427 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:48,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:48,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1088459080, now seen corresponding path program 27 times [2020-10-05 23:11:48,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:48,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132930539] [2020-10-05 23:11:48,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:48,626 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:48,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132930539] [2020-10-05 23:11:48,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412323245] [2020-10-05 23:11:48,627 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 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:48,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-05 23:11:48,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:48,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:48,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:48,803 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:11:48,819 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:48,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:48,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:48,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754626062] [2020-10-05 23:11:48,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:48,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:48,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:48,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:48,821 INFO L87 Difference]: Start difference. First operand 154 states and 386 transitions. Second operand 17 states. [2020-10-05 23:11:49,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:49,331 INFO L93 Difference]: Finished difference Result 202 states and 480 transitions. [2020-10-05 23:11:49,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 23:11:49,333 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-05 23:11:49,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:49,333 INFO L225 Difference]: With dead ends: 202 [2020-10-05 23:11:49,334 INFO L226 Difference]: Without dead ends: 196 [2020-10-05 23:11:49,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=265, Invalid=605, Unknown=0, NotChecked=0, Total=870 [2020-10-05 23:11:49,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-05 23:11:49,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 151. [2020-10-05 23:11:49,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-05 23:11:49,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 382 transitions. [2020-10-05 23:11:49,337 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 382 transitions. Word has length 13 [2020-10-05 23:11:49,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:49,338 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 382 transitions. [2020-10-05 23:11:49,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:49,338 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 382 transitions. [2020-10-05 23:11:49,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:11:49,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:49,338 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:49,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2020-10-05 23:11:49,539 INFO L427 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:49,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:49,539 INFO L82 PathProgramCache]: Analyzing trace with hash -195697579, now seen corresponding path program 112 times [2020-10-05 23:11:49,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:49,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432967838] [2020-10-05 23:11:49,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:49,653 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:49,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432967838] [2020-10-05 23:11:49,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353209405] [2020-10-05 23:11:49,654 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 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:49,695 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:11:49,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:49,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:49,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:49,916 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:49,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:49,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:49,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504988977] [2020-10-05 23:11:49,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:49,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:49,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:49,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:49,918 INFO L87 Difference]: Start difference. First operand 151 states and 382 transitions. Second operand 17 states. [2020-10-05 23:11:50,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:50,003 INFO L93 Difference]: Finished difference Result 188 states and 456 transitions. [2020-10-05 23:11:50,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:11:50,004 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:11:50,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:50,005 INFO L225 Difference]: With dead ends: 188 [2020-10-05 23:11:50,005 INFO L226 Difference]: Without dead ends: 186 [2020-10-05 23:11:50,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:50,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-05 23:11:50,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 159. [2020-10-05 23:11:50,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-05 23:11:50,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 406 transitions. [2020-10-05 23:11:50,008 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 406 transitions. Word has length 14 [2020-10-05 23:11:50,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:50,009 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 406 transitions. [2020-10-05 23:11:50,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:50,009 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 406 transitions. [2020-10-05 23:11:50,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:11:50,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:50,009 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:50,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2020-10-05 23:11:50,210 INFO L427 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:50,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:50,211 INFO L82 PathProgramCache]: Analyzing trace with hash -195696618, now seen corresponding path program 113 times [2020-10-05 23:11:50,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:50,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249590901] [2020-10-05 23:11:50,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:50,332 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:50,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249590901] [2020-10-05 23:11:50,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135847086] [2020-10-05 23:11:50,333 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 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:50,375 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 23:11:50,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:50,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:50,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:50,578 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:50,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:50,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:50,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334125711] [2020-10-05 23:11:50,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:50,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:50,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:50,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:50,580 INFO L87 Difference]: Start difference. First operand 159 states and 406 transitions. Second operand 17 states. [2020-10-05 23:11:50,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:50,693 INFO L93 Difference]: Finished difference Result 199 states and 478 transitions. [2020-10-05 23:11:50,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:11:50,694 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:11:50,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:50,695 INFO L225 Difference]: With dead ends: 199 [2020-10-05 23:11:50,695 INFO L226 Difference]: Without dead ends: 197 [2020-10-05 23:11:50,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-10-05 23:11:50,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-05 23:11:50,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 157. [2020-10-05 23:11:50,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-05 23:11:50,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 400 transitions. [2020-10-05 23:11:50,698 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 400 transitions. Word has length 14 [2020-10-05 23:11:50,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:50,698 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 400 transitions. [2020-10-05 23:11:50,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:50,698 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 400 transitions. [2020-10-05 23:11:50,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:11:50,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:50,699 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:50,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2020-10-05 23:11:50,900 INFO L427 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:50,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:50,900 INFO L82 PathProgramCache]: Analyzing trace with hash -195667788, now seen corresponding path program 114 times [2020-10-05 23:11:50,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:50,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347136931] [2020-10-05 23:11:50,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:51,024 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:51,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347136931] [2020-10-05 23:11:51,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117810440] [2020-10-05 23:11:51,025 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 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:51,066 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 23:11:51,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:51,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:51,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:51,331 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:51,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:51,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:51,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802407887] [2020-10-05 23:11:51,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:51,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:51,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:51,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:51,332 INFO L87 Difference]: Start difference. First operand 157 states and 400 transitions. Second operand 17 states. [2020-10-05 23:11:51,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:51,555 INFO L93 Difference]: Finished difference Result 210 states and 500 transitions. [2020-10-05 23:11:51,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 23:11:51,555 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:11:51,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:51,556 INFO L225 Difference]: With dead ends: 210 [2020-10-05 23:11:51,556 INFO L226 Difference]: Without dead ends: 208 [2020-10-05 23:11:51,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2020-10-05 23:11:51,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-05 23:11:51,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 155. [2020-10-05 23:11:51,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-05 23:11:51,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 394 transitions. [2020-10-05 23:11:51,559 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 394 transitions. Word has length 14 [2020-10-05 23:11:51,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:51,560 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 394 transitions. [2020-10-05 23:11:51,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:51,560 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 394 transitions. [2020-10-05 23:11:51,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:11:51,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:51,560 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:51,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2020-10-05 23:11:51,761 INFO L427 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:51,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:51,761 INFO L82 PathProgramCache]: Analyzing trace with hash -194774058, now seen corresponding path program 115 times [2020-10-05 23:11:51,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:51,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080870550] [2020-10-05 23:11:51,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:51,881 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:51,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080870550] [2020-10-05 23:11:51,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964988076] [2020-10-05 23:11:51,882 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 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:51,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:51,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:52,226 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:52,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:52,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:52,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160600351] [2020-10-05 23:11:52,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:52,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:52,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:52,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:52,228 INFO L87 Difference]: Start difference. First operand 155 states and 394 transitions. Second operand 17 states. [2020-10-05 23:11:52,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:52,543 INFO L93 Difference]: Finished difference Result 210 states and 500 transitions. [2020-10-05 23:11:52,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:11:52,544 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:11:52,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:52,545 INFO L225 Difference]: With dead ends: 210 [2020-10-05 23:11:52,545 INFO L226 Difference]: Without dead ends: 208 [2020-10-05 23:11:52,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-05 23:11:52,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-05 23:11:52,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 157. [2020-10-05 23:11:52,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-05 23:11:52,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 400 transitions. [2020-10-05 23:11:52,548 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 400 transitions. Word has length 14 [2020-10-05 23:11:52,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:52,548 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 400 transitions. [2020-10-05 23:11:52,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:52,549 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 400 transitions. [2020-10-05 23:11:52,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:11:52,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:52,549 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:52,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2020-10-05 23:11:52,750 INFO L427 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:52,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:52,750 INFO L82 PathProgramCache]: Analyzing trace with hash -194773097, now seen corresponding path program 116 times [2020-10-05 23:11:52,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:52,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103396345] [2020-10-05 23:11:52,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:52,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:52,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103396345] [2020-10-05 23:11:52,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986689286] [2020-10-05 23:11:52,866 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 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:52,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:11:52,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:52,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:52,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:58,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:58,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:58,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:58,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531548095] [2020-10-05 23:11:58,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:58,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:58,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:58,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=189, Unknown=1, NotChecked=0, Total=272 [2020-10-05 23:11:58,091 INFO L87 Difference]: Start difference. First operand 157 states and 400 transitions. Second operand 17 states. [2020-10-05 23:12:02,276 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-05 23:12:02,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:02,518 INFO L93 Difference]: Finished difference Result 218 states and 517 transitions. [2020-10-05 23:12:02,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 23:12:02,519 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:12:02,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:02,520 INFO L225 Difference]: With dead ends: 218 [2020-10-05 23:12:02,520 INFO L226 Difference]: Without dead ends: 216 [2020-10-05 23:12:02,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=144, Invalid=317, Unknown=1, NotChecked=0, Total=462 [2020-10-05 23:12:02,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-05 23:12:02,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 156. [2020-10-05 23:12:02,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-05 23:12:02,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions. [2020-10-05 23:12:02,525 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14 [2020-10-05 23:12:02,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:02,525 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 397 transitions. [2020-10-05 23:12:02,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:12:02,525 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions. [2020-10-05 23:12:02,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:12:02,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:02,526 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:12:02,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:12:02,736 INFO L427 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:12:02,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:02,736 INFO L82 PathProgramCache]: Analyzing trace with hash -194744267, now seen corresponding path program 117 times [2020-10-05 23:12:02,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:02,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336254800] [2020-10-05 23:12:02,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:02,863 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:02,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336254800] [2020-10-05 23:12:02,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114989819] [2020-10-05 23:12:02,864 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 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:12:02,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 23:12:02,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:12:02,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:12:02,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:12:03,167 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:03,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:12:03,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:12:03,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296996978] [2020-10-05 23:12:03,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:12:03,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:03,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:12:03,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:12:03,169 INFO L87 Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states. [2020-10-05 23:12:03,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:03,502 INFO L93 Difference]: Finished difference Result 212 states and 507 transitions. [2020-10-05 23:12:03,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 23:12:03,503 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:12:03,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:03,504 INFO L225 Difference]: With dead ends: 212 [2020-10-05 23:12:03,504 INFO L226 Difference]: Without dead ends: 210 [2020-10-05 23:12:03,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-10-05 23:12:03,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-05 23:12:03,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 153. [2020-10-05 23:12:03,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-05 23:12:03,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 388 transitions. [2020-10-05 23:12:03,507 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 388 transitions. Word has length 14 [2020-10-05 23:12:03,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:03,508 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 388 transitions. [2020-10-05 23:12:03,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:12:03,508 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 388 transitions. [2020-10-05 23:12:03,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:12:03,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:03,508 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:12:03,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable150 [2020-10-05 23:12:03,709 INFO L427 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:12:03,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:03,710 INFO L82 PathProgramCache]: Analyzing trace with hash -167068428, now seen corresponding path program 118 times [2020-10-05 23:12:03,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:03,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103369866] [2020-10-05 23:12:03,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:03,816 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:03,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103369866] [2020-10-05 23:12:03,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008232763] [2020-10-05 23:12:03,817 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 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:12:03,855 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:12:03,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:12:03,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:12:03,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:12:04,049 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:04,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:12:04,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:12:04,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108702818] [2020-10-05 23:12:04,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:12:04,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:04,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:12:04,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:12:04,051 INFO L87 Difference]: Start difference. First operand 153 states and 388 transitions. Second operand 17 states. [2020-10-05 23:12:04,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:04,400 INFO L93 Difference]: Finished difference Result 212 states and 504 transitions. [2020-10-05 23:12:04,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:12:04,401 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:12:04,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:04,402 INFO L225 Difference]: With dead ends: 212 [2020-10-05 23:12:04,402 INFO L226 Difference]: Without dead ends: 210 [2020-10-05 23:12:04,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=182, Invalid=418, Unknown=0, NotChecked=0, Total=600 [2020-10-05 23:12:04,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-05 23:12:04,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 156. [2020-10-05 23:12:04,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-05 23:12:04,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions. [2020-10-05 23:12:04,405 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14 [2020-10-05 23:12:04,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:04,405 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 397 transitions. [2020-10-05 23:12:04,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:12:04,405 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions. [2020-10-05 23:12:04,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:12:04,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:04,406 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:12:04,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:12:04,607 INFO L427 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:12:04,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:04,607 INFO L82 PathProgramCache]: Analyzing trace with hash -167067467, now seen corresponding path program 119 times [2020-10-05 23:12:04,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:04,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7981361] [2020-10-05 23:12:04,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:04,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:04,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7981361] [2020-10-05 23:12:04,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52908656] [2020-10-05 23:12:04,726 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 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:12:04,765 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:12:04,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:12:04,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:12:04,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:12:04,988 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:04,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:12:04,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:12:04,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055819370] [2020-10-05 23:12:04,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:12:04,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:04,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:12:04,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:12:04,990 INFO L87 Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states. [2020-10-05 23:12:05,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:05,370 INFO L93 Difference]: Finished difference Result 224 states and 529 transitions. [2020-10-05 23:12:05,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:12:05,372 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:12:05,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:05,373 INFO L225 Difference]: With dead ends: 224 [2020-10-05 23:12:05,373 INFO L226 Difference]: Without dead ends: 222 [2020-10-05 23:12:05,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2020-10-05 23:12:05,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-05 23:12:05,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 156. [2020-10-05 23:12:05,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-05 23:12:05,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions. [2020-10-05 23:12:05,377 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14 [2020-10-05 23:12:05,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:05,377 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 397 transitions. [2020-10-05 23:12:05,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:12:05,377 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions. [2020-10-05 23:12:05,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:12:05,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:05,377 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] Received shutdown request... [2020-10-05 23:12:05,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,147 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:12:05,578 INFO L427 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:12:05,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:05,578 INFO L82 PathProgramCache]: Analyzing trace with hash -167038637, now seen corresponding path program 120 times [2020-10-05 23:12:05,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:05,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346425614] [2020-10-05 23:12:05,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2020-10-05 23:12:05,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26607198] [2020-10-05 23:12:05,583 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 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:12:05,624 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 23:12:05,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:12:05,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:12:05,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:12:05,636 WARN L210 SmtUtils]: Removed 1 from assertion stack [2020-10-05 23:12:05,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:12:05,838 WARN L544 AbstractCegarLoop]: Verification canceled [2020-10-05 23:12:05,843 WARN L228 ceAbstractionStarter]: Timeout [2020-10-05 23:12:05,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 11:12:05 BasicIcfg [2020-10-05 23:12:05,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 23:12:05,845 INFO L168 Benchmark]: Toolchain (without parser) took 272040.64 ms. Allocated memory was 138.4 MB in the beginning and 257.9 MB in the end (delta: 119.5 MB). Free memory was 100.0 MB in the beginning and 94.2 MB in the end (delta: 5.8 MB). Peak memory consumption was 125.3 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:05,845 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 138.4 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. [2020-10-05 23:12:05,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.68 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 99.8 MB in the beginning and 161.7 MB in the end (delta: -61.9 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:05,846 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.79 ms. Allocated memory is still 202.4 MB. Free memory was 161.7 MB in the beginning and 159.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:05,846 INFO L168 Benchmark]: Boogie Preprocessor took 29.21 ms. Allocated memory is still 202.4 MB. Free memory was 159.6 MB in the beginning and 158.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:05,847 INFO L168 Benchmark]: RCFGBuilder took 370.10 ms. Allocated memory is still 202.4 MB. Free memory was 158.2 MB in the beginning and 137.3 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:05,847 INFO L168 Benchmark]: TraceAbstraction took 270893.65 ms. Allocated memory was 202.4 MB in the beginning and 257.9 MB in the end (delta: 55.6 MB). Free memory was 136.7 MB in the beginning and 94.2 MB in the end (delta: 42.5 MB). Peak memory consumption was 98.1 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:05,849 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 138.4 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 693.68 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 99.8 MB in the beginning and 161.7 MB in the end (delta: -61.9 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.79 ms. Allocated memory is still 202.4 MB. Free memory was 161.7 MB in the beginning and 159.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.21 ms. Allocated memory is still 202.4 MB. Free memory was 159.6 MB in the beginning and 158.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 370.10 ms. Allocated memory is still 202.4 MB. Free memory was 158.2 MB in the beginning and 137.3 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 270893.65 ms. Allocated memory was 202.4 MB in the beginning and 257.9 MB in the end (delta: 55.6 MB). Free memory was 136.7 MB in the beginning and 94.2 MB in the end (delta: 42.5 MB). Peak memory consumption was 98.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.2s, 59 ProgramPointsBefore, 20 ProgramPointsAfterwards, 57 TransitionsBefore, 15 TransitionsAfterwards, 1032 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 576 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 988 CheckedPairsTotal, 47 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 712]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 712). Cancelled while BasicCegarLoop was analyzing trace of length 15 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 6 for 0ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 270.7s, OverallIterations: 154, TraceHistogramMax: 6, AutomataDifference: 184.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 2091 SDtfs, 15130 SDslu, 14696 SDs, 0 SdLazy, 11113 SolverSat, 3399 SolverUnsat, 37 SolverUnknown, 0 SolverNotchecked, 81.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4000 GetRequests, 715 SyntacticMatches, 126 SemanticMatches, 3159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18646 ImplicationChecksByTransitivity, 137.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=159occurred in iteration=146, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 153 MinimizatonAttempts, 6744 StatesRemovedByMinimization, 153 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 45.4s InterpolantComputationTime, 3652 NumberOfCodeBlocks, 3652 NumberOfCodeBlocksAsserted, 461 NumberOfCheckSat, 3353 ConstructedInterpolants, 6 QuantifiedInterpolants, 335149 SizeOfPredicates, 146 NumberOfNonLiveVariables, 12454 ConjunctsInSsa, 1388 ConjunctsInUnsatCore, 299 InterpolantComputations, 7 PerfectInterpolantSequences, 0/1322 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