/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-McrAutomaton-SP.epf -i ../../../trunk/examples/svcomp/pthread/fib_bench_longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 01:14:05,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 01:14:05,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 01:14:05,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 01:14:05,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 01:14:05,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 01:14:05,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 01:14:05,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 01:14:05,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 01:14:05,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 01:14:05,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 01:14:05,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 01:14:05,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 01:14:05,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 01:14:05,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 01:14:05,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 01:14:05,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 01:14:05,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 01:14:05,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 01:14:05,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 01:14:05,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 01:14:05,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 01:14:05,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 01:14:05,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 01:14:05,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-22 01:14:05,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-22 01:14:05,887 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-22 01:14:05,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-22 01:14:05,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-22 01:14:05,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-22 01:14:05,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 01:14:05,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 01:14:05,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 01:14:05,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 01:14:05,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 01:14:05,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 01:14:05,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 01:14:05,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 01:14:05,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 01:14:05,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 01:14:05,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 01:14:05,905 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-McrAutomaton-SP.epf [2020-10-22 01:14:05,943 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 01:14:05,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 01:14:05,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 01:14:05,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 01:14:05,946 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 01:14:05,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 01:14:05,946 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 01:14:05,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 01:14:05,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 01:14:05,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 01:14:05,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 01:14:05,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 01:14:05,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 01:14:05,949 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 01:14:05,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 01:14:05,949 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 01:14:05,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 01:14:05,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 01:14:05,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 01:14:05,950 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 01:14:05,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 01:14:05,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 01:14:05,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 01:14:05,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 01:14:05,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 01:14:05,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 01:14:05,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 01:14:05,952 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 01:14:05,952 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 01:14:05,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 01:14:05,953 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 01:14:06,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 01:14:06,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 01:14:06,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 01:14:06,288 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 01:14:06,288 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 01:14:06,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longer-2.i [2020-10-22 01:14:06,367 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9a3d2d3e/1bae58c9c5844ef2aef7eb25a2351f9e/FLAG009b2b0e5 [2020-10-22 01:14:06,942 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 01:14:06,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longer-2.i [2020-10-22 01:14:06,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9a3d2d3e/1bae58c9c5844ef2aef7eb25a2351f9e/FLAG009b2b0e5 [2020-10-22 01:14:07,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9a3d2d3e/1bae58c9c5844ef2aef7eb25a2351f9e [2020-10-22 01:14:07,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 01:14:07,238 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 01:14:07,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 01:14:07,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 01:14:07,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 01:14:07,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 01:14:07" (1/1) ... [2020-10-22 01:14:07,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78922336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07, skipping insertion in model container [2020-10-22 01:14:07,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 01:14:07" (1/1) ... [2020-10-22 01:14:07,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 01:14:07,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 01:14:07,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 01:14:07,791 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 01:14:07,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 01:14:07,906 INFO L208 MainTranslator]: Completed translation [2020-10-22 01:14:07,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07 WrapperNode [2020-10-22 01:14:07,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 01:14:07,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 01:14:07,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 01:14:07,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 01:14:07,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07" (1/1) ... [2020-10-22 01:14:07,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07" (1/1) ... [2020-10-22 01:14:07,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 01:14:07,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 01:14:07,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 01:14:07,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 01:14:07,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07" (1/1) ... [2020-10-22 01:14:07,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07" (1/1) ... [2020-10-22 01:14:07,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07" (1/1) ... [2020-10-22 01:14:07,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07" (1/1) ... [2020-10-22 01:14:07,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07" (1/1) ... [2020-10-22 01:14:07,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07" (1/1) ... [2020-10-22 01:14:07,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07" (1/1) ... [2020-10-22 01:14:07,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 01:14:07,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 01:14:07,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 01:14:07,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 01:14:07,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07" (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 [2020-10-22 01:14:08,060 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-22 01:14:08,060 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-22 01:14:08,060 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-22 01:14:08,060 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-22 01:14:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 01:14:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 01:14:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 01:14:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 01:14:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 01:14:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 01:14:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 01:14:08,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 01:14:08,064 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 01:14:08,443 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 01:14:08,443 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-22 01:14:08,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 01:14:08 BoogieIcfgContainer [2020-10-22 01:14:08,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 01:14:08,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 01:14:08,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 01:14:08,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 01:14:08,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 01:14:07" (1/3) ... [2020-10-22 01:14:08,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4736c57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 01:14:08, skipping insertion in model container [2020-10-22 01:14:08,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07" (2/3) ... [2020-10-22 01:14:08,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4736c57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 01:14:08, skipping insertion in model container [2020-10-22 01:14:08,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 01:14:08" (3/3) ... [2020-10-22 01:14:08,456 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench_longer-2.i [2020-10-22 01:14:08,468 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 01:14:08,469 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 01:14:08,476 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 01:14:08,477 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 01:14:08,504 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,505 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,505 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,505 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,506 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,506 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,506 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,507 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,507 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,507 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,507 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,508 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,508 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,508 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,508 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,509 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,509 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,509 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,509 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,510 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,510 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,510 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,511 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,511 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,511 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,512 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,512 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,512 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,512 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,513 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,516 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,517 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,517 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,517 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,517 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,518 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,524 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,524 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,525 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,525 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,525 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,525 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,528 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 01:14:08,543 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-22 01:14:08,562 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 01:14:08,563 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 01:14:08,563 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 01:14:08,563 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 01:14:08,563 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 01:14:08,563 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 01:14:08,564 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 01:14:08,564 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 01:14:08,577 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 01:14:08,578 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 66 transitions, 142 flow [2020-10-22 01:14:08,581 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 66 transitions, 142 flow [2020-10-22 01:14:08,583 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 66 transitions, 142 flow [2020-10-22 01:14:08,627 INFO L129 PetriNetUnfolder]: 6/64 cut-off events. [2020-10-22 01:14:08,627 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 01:14:08,633 INFO L80 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 6/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 107 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2020-10-22 01:14:08,636 INFO L116 LiptonReduction]: Number of co-enabled transitions 1272 [2020-10-22 01:14:09,783 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-22 01:14:10,199 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-10-22 01:14:10,338 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-22 01:14:10,379 INFO L131 LiptonReduction]: Checked pairs total: 1183 [2020-10-22 01:14:10,379 INFO L133 LiptonReduction]: Total number of compositions: 65 [2020-10-22 01:14:10,387 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2020-10-22 01:14:10,400 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-22 01:14:10,403 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-22 01:14:10,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-22 01:14:10,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:10,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-22 01:14:10,412 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:10,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:10,419 INFO L82 PathProgramCache]: Analyzing trace with hash -542844556, now seen corresponding path program 1 times [2020-10-22 01:14:10,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:10,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739252530] [2020-10-22 01:14:10,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:10,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:10,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739252530] [2020-10-22 01:14:10,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:10,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 01:14:10,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1993256963] [2020-10-22 01:14:10,678 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:10,681 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:10,695 INFO L252 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-10-22 01:14:10,695 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:10,700 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:10,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:14:10,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:10,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:14:10,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:14:10,719 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-22 01:14:10,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:10,780 INFO L93 Difference]: Finished difference Result 83 states and 212 transitions. [2020-10-22 01:14:10,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 01:14:10,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-22 01:14:10,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:10,794 INFO L225 Difference]: With dead ends: 83 [2020-10-22 01:14:10,794 INFO L226 Difference]: Without dead ends: 54 [2020-10-22 01:14:10,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 01:14:10,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-22 01:14:10,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-10-22 01:14:10,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-22 01:14:10,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 120 transitions. [2020-10-22 01:14:10,843 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 120 transitions. Word has length 6 [2020-10-22 01:14:10,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:10,844 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 120 transitions. [2020-10-22 01:14:10,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:14:10,844 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 120 transitions. [2020-10-22 01:14:10,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 01:14:10,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:10,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:10,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 01:14:10,846 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:10,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:10,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1940739433, now seen corresponding path program 1 times [2020-10-22 01:14:10,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:10,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093690871] [2020-10-22 01:14:10,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:10,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:10,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093690871] [2020-10-22 01:14:10,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:10,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 01:14:10,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [146255190] [2020-10-22 01:14:10,985 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:10,986 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:10,989 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 16 transitions. [2020-10-22 01:14:10,990 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:11,057 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:11,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 01:14:11,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:11,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 01:14:11,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 01:14:11,060 INFO L87 Difference]: Start difference. First operand 50 states and 120 transitions. Second operand 5 states. [2020-10-22 01:14:11,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:11,126 INFO L93 Difference]: Finished difference Result 80 states and 186 transitions. [2020-10-22 01:14:11,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 01:14:11,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-22 01:14:11,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:11,129 INFO L225 Difference]: With dead ends: 80 [2020-10-22 01:14:11,129 INFO L226 Difference]: Without dead ends: 75 [2020-10-22 01:14:11,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 01:14:11,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-22 01:14:11,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-10-22 01:14:11,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-22 01:14:11,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions. [2020-10-22 01:14:11,140 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 8 [2020-10-22 01:14:11,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:11,141 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 136 transitions. [2020-10-22 01:14:11,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 01:14:11,142 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions. [2020-10-22 01:14:11,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 01:14:11,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:11,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:11,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 01:14:11,143 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:11,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:11,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1981941347, now seen corresponding path program 1 times [2020-10-22 01:14:11,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:11,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407336056] [2020-10-22 01:14:11,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:11,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:11,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407336056] [2020-10-22 01:14:11,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:11,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 01:14:11,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [387116917] [2020-10-22 01:14:11,208 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:11,209 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:11,210 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 12 transitions. [2020-10-22 01:14:11,211 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:13,290 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:14:13,321 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [551#(and (<= (+ ~i~0 ~j~0) 2) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:14:13,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 01:14:13,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:13,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 01:14:13,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:14:13,322 INFO L87 Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 6 states. [2020-10-22 01:14:13,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:13,410 INFO L93 Difference]: Finished difference Result 83 states and 196 transitions. [2020-10-22 01:14:13,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 01:14:13,411 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-10-22 01:14:13,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:13,412 INFO L225 Difference]: With dead ends: 83 [2020-10-22 01:14:13,413 INFO L226 Difference]: Without dead ends: 77 [2020-10-22 01:14:13,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-22 01:14:13,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-22 01:14:13,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 66. [2020-10-22 01:14:13,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-22 01:14:13,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 157 transitions. [2020-10-22 01:14:13,423 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 157 transitions. Word has length 8 [2020-10-22 01:14:13,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:13,424 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 157 transitions. [2020-10-22 01:14:13,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 01:14:13,424 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 157 transitions. [2020-10-22 01:14:13,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 01:14:13,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:13,425 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:13,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 01:14:13,426 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:13,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:13,426 INFO L82 PathProgramCache]: Analyzing trace with hash -33351122, now seen corresponding path program 2 times [2020-10-22 01:14:13,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:13,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120029035] [2020-10-22 01:14:13,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:13,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:13,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120029035] [2020-10-22 01:14:13,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895203054] [2020-10-22 01:14:13,524 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 [2020-10-22 01:14:13,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:14:13,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:13,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-22 01:14:13,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:13,664 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:14:13,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:13,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:13,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2020-10-22 01:14:13,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1780542166] [2020-10-22 01:14:13,688 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:13,689 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:13,691 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-10-22 01:14:13,691 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:16,114 WARN L193 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 25 DAG size of output: 7 [2020-10-22 01:14:16,146 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:16,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 01:14:16,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:16,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 01:14:16,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-22 01:14:16,148 INFO L87 Difference]: Start difference. First operand 66 states and 157 transitions. Second operand 6 states. [2020-10-22 01:14:16,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:16,233 INFO L93 Difference]: Finished difference Result 101 states and 235 transitions. [2020-10-22 01:14:16,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-22 01:14:16,236 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-22 01:14:16,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:16,238 INFO L225 Difference]: With dead ends: 101 [2020-10-22 01:14:16,238 INFO L226 Difference]: Without dead ends: 96 [2020-10-22 01:14:16,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:14:16,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-22 01:14:16,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2020-10-22 01:14:16,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-22 01:14:16,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 173 transitions. [2020-10-22 01:14:16,253 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 173 transitions. Word has length 9 [2020-10-22 01:14:16,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:16,253 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 173 transitions. [2020-10-22 01:14:16,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 01:14:16,254 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 173 transitions. [2020-10-22 01:14:16,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 01:14:16,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:16,255 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:16,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:16,457 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:16,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:16,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1310611417, now seen corresponding path program 2 times [2020-10-22 01:14:16,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:16,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721515201] [2020-10-22 01:14:16,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:16,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721515201] [2020-10-22 01:14:16,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937326468] [2020-10-22 01:14:16,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:16,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:14:16,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:16,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-22 01:14:16,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:16,645 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:14:16,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:16,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:16,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-22 01:14:16,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1789220405] [2020-10-22 01:14:16,676 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:16,677 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:16,678 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-10-22 01:14:16,678 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:17,049 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-10-22 01:14:17,087 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1088#(and (<= (+ (* 2 ~i~0) ~j~0) 3) (= ULTIMATE.start_main_~condI~0 0)), 1087#(and (<= (+ ~i~0 ~j~0) 3) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:14:17,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:14:17,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:17,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:14:17,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-22 01:14:17,089 INFO L87 Difference]: Start difference. First operand 71 states and 173 transitions. Second operand 8 states. [2020-10-22 01:14:17,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:17,230 INFO L93 Difference]: Finished difference Result 100 states and 239 transitions. [2020-10-22 01:14:17,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-22 01:14:17,231 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-10-22 01:14:17,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:17,232 INFO L225 Difference]: With dead ends: 100 [2020-10-22 01:14:17,232 INFO L226 Difference]: Without dead ends: 94 [2020-10-22 01:14:17,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:14:17,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-22 01:14:17,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 79. [2020-10-22 01:14:17,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-22 01:14:17,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 194 transitions. [2020-10-22 01:14:17,252 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 194 transitions. Word has length 9 [2020-10-22 01:14:17,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:17,252 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 194 transitions. [2020-10-22 01:14:17,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:14:17,252 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 194 transitions. [2020-10-22 01:14:17,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 01:14:17,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:17,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:17,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:17,465 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:17,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:17,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1043120626, now seen corresponding path program 1 times [2020-10-22 01:14:17,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:17,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785370171] [2020-10-22 01:14:17,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:17,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:17,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785370171] [2020-10-22 01:14:17,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:17,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 01:14:17,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1148184129] [2020-10-22 01:14:17,549 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:17,551 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:17,553 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-10-22 01:14:17,553 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:17,617 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:17,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 01:14:17,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:17,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 01:14:17,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:14:17,619 INFO L87 Difference]: Start difference. First operand 79 states and 194 transitions. Second operand 6 states. [2020-10-22 01:14:17,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:17,740 INFO L93 Difference]: Finished difference Result 107 states and 250 transitions. [2020-10-22 01:14:17,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-22 01:14:17,741 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-22 01:14:17,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:17,742 INFO L225 Difference]: With dead ends: 107 [2020-10-22 01:14:17,742 INFO L226 Difference]: Without dead ends: 102 [2020-10-22 01:14:17,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-22 01:14:17,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-22 01:14:17,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 80. [2020-10-22 01:14:17,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-22 01:14:17,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 195 transitions. [2020-10-22 01:14:17,753 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 195 transitions. Word has length 10 [2020-10-22 01:14:17,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:17,753 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 195 transitions. [2020-10-22 01:14:17,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 01:14:17,754 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 195 transitions. [2020-10-22 01:14:17,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 01:14:17,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:17,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:17,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 01:14:17,755 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:17,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:17,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1043091796, now seen corresponding path program 2 times [2020-10-22 01:14:17,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:17,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72491160] [2020-10-22 01:14:17,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:17,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:17,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72491160] [2020-10-22 01:14:17,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:17,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 01:14:17,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [168768800] [2020-10-22 01:14:17,821 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:17,823 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:17,825 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-10-22 01:14:17,826 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:19,900 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:14:20,007 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1640#(and (<= (+ ~i~0 ~j~0) 3) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:14:20,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 01:14:20,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:20,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 01:14:20,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-22 01:14:20,009 INFO L87 Difference]: Start difference. First operand 80 states and 195 transitions. Second operand 7 states. [2020-10-22 01:14:20,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:20,123 INFO L93 Difference]: Finished difference Result 113 states and 262 transitions. [2020-10-22 01:14:20,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-22 01:14:20,124 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-10-22 01:14:20,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:20,125 INFO L225 Difference]: With dead ends: 113 [2020-10-22 01:14:20,125 INFO L226 Difference]: Without dead ends: 108 [2020-10-22 01:14:20,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-22 01:14:20,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-22 01:14:20,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 82. [2020-10-22 01:14:20,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-22 01:14:20,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 194 transitions. [2020-10-22 01:14:20,141 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 194 transitions. Word has length 10 [2020-10-22 01:14:20,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:20,141 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 194 transitions. [2020-10-22 01:14:20,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 01:14:20,141 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 194 transitions. [2020-10-22 01:14:20,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 01:14:20,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:20,143 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:20,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 01:14:20,143 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:20,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:20,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1033855625, now seen corresponding path program 3 times [2020-10-22 01:14:20,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:20,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498929508] [2020-10-22 01:14:20,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:20,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:20,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498929508] [2020-10-22 01:14:20,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769493486] [2020-10-22 01:14:20,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:20,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-22 01:14:20,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:20,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:14:20,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:20,461 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:14:20,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:20,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:20,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-22 01:14:20,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [886366287] [2020-10-22 01:14:20,490 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:20,491 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:20,493 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-10-22 01:14:20,493 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:25,755 WARN L193 SmtUtils]: Spent 5.23 s on a formula simplification. DAG size of input: 39 DAG size of output: 9 [2020-10-22 01:14:32,735 WARN L193 SmtUtils]: Spent 6.97 s on a formula simplification. DAG size of input: 37 DAG size of output: 7 [2020-10-22 01:14:35,113 WARN L193 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 25 DAG size of output: 7 [2020-10-22 01:14:37,528 WARN L193 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 22 DAG size of output: 6 [2020-10-22 01:14:37,529 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:37,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 01:14:37,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:37,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 01:14:37,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-22 01:14:37,531 INFO L87 Difference]: Start difference. First operand 82 states and 194 transitions. Second operand 7 states. [2020-10-22 01:14:37,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:37,638 INFO L93 Difference]: Finished difference Result 122 states and 284 transitions. [2020-10-22 01:14:37,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-22 01:14:37,644 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-10-22 01:14:37,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:37,645 INFO L225 Difference]: With dead ends: 122 [2020-10-22 01:14:37,645 INFO L226 Difference]: Without dead ends: 117 [2020-10-22 01:14:37,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:14:37,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-22 01:14:37,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-10-22 01:14:37,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-22 01:14:37,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 215 transitions. [2020-10-22 01:14:37,653 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 215 transitions. Word has length 10 [2020-10-22 01:14:37,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:37,653 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 215 transitions. [2020-10-22 01:14:37,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 01:14:37,653 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 215 transitions. [2020-10-22 01:14:37,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 01:14:37,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:37,655 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:37,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:37,868 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:37,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:37,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1974220067, now seen corresponding path program 3 times [2020-10-22 01:14:37,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:37,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427781186] [2020-10-22 01:14:37,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:37,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:37,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427781186] [2020-10-22 01:14:37,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27169928] [2020-10-22 01:14:37,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:37,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-22 01:14:37,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:37,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:14:37,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:38,077 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:14:38,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:38,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:38,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-22 01:14:38,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [17876077] [2020-10-22 01:14:38,090 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:38,092 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:38,093 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-10-22 01:14:38,094 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:40,176 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:14:42,279 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 23 [2020-10-22 01:14:42,355 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [2309#(and (<= (+ ~i~0 ~j~0) 4) (= ULTIMATE.start_main_~condI~0 0)), 2310#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 2 ~i~0) ~j~0) 4)), 2311#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 3 ~i~0) ~j~0) 4))] [2020-10-22 01:14:42,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:14:42,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:42,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:14:42,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-22 01:14:42,358 INFO L87 Difference]: Start difference. First operand 88 states and 215 transitions. Second operand 10 states. [2020-10-22 01:14:42,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:42,534 INFO L93 Difference]: Finished difference Result 121 states and 288 transitions. [2020-10-22 01:14:42,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-22 01:14:42,535 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2020-10-22 01:14:42,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:42,537 INFO L225 Difference]: With dead ends: 121 [2020-10-22 01:14:42,537 INFO L226 Difference]: Without dead ends: 115 [2020-10-22 01:14:42,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-10-22 01:14:42,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-22 01:14:42,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 94. [2020-10-22 01:14:42,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-22 01:14:42,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-22 01:14:42,544 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 10 [2020-10-22 01:14:42,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:42,545 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-22 01:14:42,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:14:42,545 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-22 01:14:42,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:14:42,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:42,546 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:42,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:42,760 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:42,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:42,761 INFO L82 PathProgramCache]: Analyzing trace with hash 2022998328, now seen corresponding path program 3 times [2020-10-22 01:14:42,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:42,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826562347] [2020-10-22 01:14:42,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:42,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:42,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826562347] [2020-10-22 01:14:42,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634309833] [2020-10-22 01:14:42,825 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 [2020-10-22 01:14:42,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-22 01:14:42,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:42,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:14:42,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:42,976 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:14:42,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:42,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:42,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-22 01:14:42,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2138461536] [2020-10-22 01:14:42,989 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:42,991 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:42,993 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-10-22 01:14:42,993 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:49,930 WARN L193 SmtUtils]: Spent 6.92 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-22 01:14:49,966 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:49,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 01:14:49,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:49,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 01:14:49,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-22 01:14:49,967 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 7 states. [2020-10-22 01:14:50,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:50,092 INFO L93 Difference]: Finished difference Result 121 states and 289 transitions. [2020-10-22 01:14:50,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-22 01:14:50,093 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-22 01:14:50,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:50,094 INFO L225 Difference]: With dead ends: 121 [2020-10-22 01:14:50,094 INFO L226 Difference]: Without dead ends: 116 [2020-10-22 01:14:50,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:14:50,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-22 01:14:50,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 94. [2020-10-22 01:14:50,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-22 01:14:50,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-22 01:14:50,101 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 11 [2020-10-22 01:14:50,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:50,101 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-22 01:14:50,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 01:14:50,101 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-22 01:14:50,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:14:50,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:50,102 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:50,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-22 01:14:50,303 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:50,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:50,304 INFO L82 PathProgramCache]: Analyzing trace with hash 2023027158, now seen corresponding path program 4 times [2020-10-22 01:14:50,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:50,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054425657] [2020-10-22 01:14:50,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:50,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:50,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054425657] [2020-10-22 01:14:50,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298915686] [2020-10-22 01:14:50,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:50,437 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:14:50,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:50,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:14:50,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:50,501 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:14:50,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:50,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:50,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-22 01:14:50,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1484539808] [2020-10-22 01:14:50,510 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:50,511 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:50,513 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-10-22 01:14:50,513 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:52,610 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:14:52,644 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3030#(and (<= (+ ~i~0 ~j~0) 5) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:14:52,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:14:52,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:52,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:14:52,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-22 01:14:52,645 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 8 states. [2020-10-22 01:14:52,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:52,798 INFO L93 Difference]: Finished difference Result 123 states and 295 transitions. [2020-10-22 01:14:52,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-22 01:14:52,798 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-22 01:14:52,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:52,799 INFO L225 Difference]: With dead ends: 123 [2020-10-22 01:14:52,799 INFO L226 Difference]: Without dead ends: 118 [2020-10-22 01:14:52,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-22 01:14:52,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-22 01:14:52,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 95. [2020-10-22 01:14:52,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-22 01:14:52,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 237 transitions. [2020-10-22 01:14:52,811 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 237 transitions. Word has length 11 [2020-10-22 01:14:52,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:52,811 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 237 transitions. [2020-10-22 01:14:52,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:14:52,811 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 237 transitions. [2020-10-22 01:14:52,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:14:52,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:52,814 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:53,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:53,026 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:53,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:53,026 INFO L82 PathProgramCache]: Analyzing trace with hash 2023028119, now seen corresponding path program 5 times [2020-10-22 01:14:53,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:53,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434370733] [2020-10-22 01:14:53,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:53,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:53,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434370733] [2020-10-22 01:14:53,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999099940] [2020-10-22 01:14:53,126 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:53,181 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:14:53,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:53,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:14:53,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:53,264 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:14:53,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:53,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:53,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-22 01:14:53,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1847248021] [2020-10-22 01:14:53,274 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:53,275 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:53,276 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 19 transitions. [2020-10-22 01:14:53,277 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:53,327 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:53,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 01:14:53,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:53,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 01:14:53,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-22 01:14:53,329 INFO L87 Difference]: Start difference. First operand 95 states and 237 transitions. Second operand 7 states. [2020-10-22 01:14:53,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:53,446 INFO L93 Difference]: Finished difference Result 126 states and 297 transitions. [2020-10-22 01:14:53,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-22 01:14:53,447 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-22 01:14:53,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:53,448 INFO L225 Difference]: With dead ends: 126 [2020-10-22 01:14:53,448 INFO L226 Difference]: Without dead ends: 121 [2020-10-22 01:14:53,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:14:53,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-22 01:14:53,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 95. [2020-10-22 01:14:53,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-22 01:14:53,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 233 transitions. [2020-10-22 01:14:53,454 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 233 transitions. Word has length 11 [2020-10-22 01:14:53,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:53,455 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 233 transitions. [2020-10-22 01:14:53,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 01:14:53,455 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 233 transitions. [2020-10-22 01:14:53,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:14:53,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:53,455 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:53,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:53,667 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:53,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:53,668 INFO L82 PathProgramCache]: Analyzing trace with hash 2023920888, now seen corresponding path program 6 times [2020-10-22 01:14:53,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:53,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299237830] [2020-10-22 01:14:53,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:53,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:53,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299237830] [2020-10-22 01:14:53,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629390175] [2020-10-22 01:14:53,728 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:53,792 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-22 01:14:53,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:53,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:14:53,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:53,857 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:14:53,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:53,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:53,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-22 01:14:53,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [944607678] [2020-10-22 01:14:53,869 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:53,870 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:53,872 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 29 transitions. [2020-10-22 01:14:53,872 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:54,834 WARN L193 SmtUtils]: Spent 943.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-10-22 01:14:54,890 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-22 01:14:54,890 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 01:14:54,953 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [3762#(and (<= (+ ~i~0 ~j~0) 5) (= ULTIMATE.start_main_~condI~0 0)), 3763#(and (<= (+ (* 2 ~i~0) ~j~0) 5) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:14:54,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:14:54,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:54,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:14:54,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:14:54,954 INFO L87 Difference]: Start difference. First operand 95 states and 233 transitions. Second operand 9 states. [2020-10-22 01:14:55,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:55,159 INFO L93 Difference]: Finished difference Result 140 states and 330 transitions. [2020-10-22 01:14:55,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:14:55,166 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-10-22 01:14:55,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:55,168 INFO L225 Difference]: With dead ends: 140 [2020-10-22 01:14:55,168 INFO L226 Difference]: Without dead ends: 135 [2020-10-22 01:14:55,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-22 01:14:55,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-22 01:14:55,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 98. [2020-10-22 01:14:55,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-22 01:14:55,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 242 transitions. [2020-10-22 01:14:55,172 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 242 transitions. Word has length 11 [2020-10-22 01:14:55,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:55,173 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 242 transitions. [2020-10-22 01:14:55,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:14:55,173 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 242 transitions. [2020-10-22 01:14:55,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:14:55,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:55,174 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:55,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-22 01:14:55,383 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:55,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:55,383 INFO L82 PathProgramCache]: Analyzing trace with hash 2023921849, now seen corresponding path program 7 times [2020-10-22 01:14:55,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:55,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574496265] [2020-10-22 01:14:55,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:55,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:55,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574496265] [2020-10-22 01:14:55,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248633225] [2020-10-22 01:14:55,501 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:55,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:14:55,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:55,614 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:14:55,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:55,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:55,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-22 01:14:55,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [164125121] [2020-10-22 01:14:55,623 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:55,624 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:55,626 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-10-22 01:14:55,626 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:55,776 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 6 [2020-10-22 01:14:55,813 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:55,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 01:14:55,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:55,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 01:14:55,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-22 01:14:55,815 INFO L87 Difference]: Start difference. First operand 98 states and 242 transitions. Second operand 7 states. [2020-10-22 01:14:55,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:55,971 INFO L93 Difference]: Finished difference Result 141 states and 331 transitions. [2020-10-22 01:14:55,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-22 01:14:55,976 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-22 01:14:55,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:55,978 INFO L225 Difference]: With dead ends: 141 [2020-10-22 01:14:55,978 INFO L226 Difference]: Without dead ends: 136 [2020-10-22 01:14:55,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:14:55,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-22 01:14:55,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 97. [2020-10-22 01:14:55,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-22 01:14:55,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 237 transitions. [2020-10-22 01:14:55,989 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 237 transitions. Word has length 11 [2020-10-22 01:14:55,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:55,990 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 237 transitions. [2020-10-22 01:14:55,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 01:14:55,990 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 237 transitions. [2020-10-22 01:14:55,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:14:55,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:55,991 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:56,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:56,202 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:56,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:56,203 INFO L82 PathProgramCache]: Analyzing trace with hash 2023950679, now seen corresponding path program 8 times [2020-10-22 01:14:56,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:56,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775398718] [2020-10-22 01:14:56,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:56,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:56,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775398718] [2020-10-22 01:14:56,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566495021] [2020-10-22 01:14:56,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:56,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:14:56,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:56,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:14:56,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:56,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:56,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:56,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-22 01:14:56,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1249504385] [2020-10-22 01:14:56,439 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:56,441 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:56,447 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2020-10-22 01:14:56,447 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:57,130 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:14:57,593 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 6 [2020-10-22 01:14:57,619 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4539#(and (<= (+ ~i~0 ~j~0) 4) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:14:57,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:14:57,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:57,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:14:57,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-22 01:14:57,620 INFO L87 Difference]: Start difference. First operand 97 states and 237 transitions. Second operand 8 states. [2020-10-22 01:14:57,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:57,764 INFO L93 Difference]: Finished difference Result 141 states and 327 transitions. [2020-10-22 01:14:57,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-22 01:14:57,764 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-22 01:14:57,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:57,766 INFO L225 Difference]: With dead ends: 141 [2020-10-22 01:14:57,766 INFO L226 Difference]: Without dead ends: 136 [2020-10-22 01:14:57,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:14:57,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-22 01:14:57,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 98. [2020-10-22 01:14:57,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-22 01:14:57,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2020-10-22 01:14:57,771 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 11 [2020-10-22 01:14:57,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:57,771 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2020-10-22 01:14:57,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:14:57,772 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2020-10-22 01:14:57,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:14:57,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:57,772 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:57,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-22 01:14:57,985 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:57,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:57,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1984724146, now seen corresponding path program 4 times [2020-10-22 01:14:57,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:57,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760220969] [2020-10-22 01:14:57,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:58,109 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:58,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760220969] [2020-10-22 01:14:58,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243177094] [2020-10-22 01:14:58,110 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:58,160 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:14:58,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:58,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:14:58,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:58,249 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:14:58,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:58,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:58,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-22 01:14:58,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [704667845] [2020-10-22 01:14:58,272 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:58,273 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:58,274 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 31 transitions. [2020-10-22 01:14:58,275 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:05,285 WARN L193 SmtUtils]: Spent 6.98 s on a formula simplification. DAG size of input: 39 DAG size of output: 9 [2020-10-22 01:15:07,353 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 27 DAG size of output: 9 [2020-10-22 01:15:12,970 WARN L193 SmtUtils]: Spent 5.59 s on a formula simplification. DAG size of input: 37 DAG size of output: 7 [2020-10-22 01:15:15,050 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 22 DAG size of output: 6 [2020-10-22 01:15:15,061 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:15,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:15:15,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:15,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:15:15,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-22 01:15:15,062 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand 8 states. [2020-10-22 01:15:15,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:15,191 INFO L93 Difference]: Finished difference Result 143 states and 333 transitions. [2020-10-22 01:15:15,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:15,192 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-22 01:15:15,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:15,193 INFO L225 Difference]: With dead ends: 143 [2020-10-22 01:15:15,193 INFO L226 Difference]: Without dead ends: 138 [2020-10-22 01:15:15,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-22 01:15:15,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-22 01:15:15,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2020-10-22 01:15:15,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-22 01:15:15,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 257 transitions. [2020-10-22 01:15:15,198 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 257 transitions. Word has length 11 [2020-10-22 01:15:15,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:15,198 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 257 transitions. [2020-10-22 01:15:15,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:15:15,198 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 257 transitions. [2020-10-22 01:15:15,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:15:15,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:15,199 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:15,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-22 01:15:15,400 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:15,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:15,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1071251737, now seen corresponding path program 4 times [2020-10-22 01:15:15,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:15,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743751620] [2020-10-22 01:15:15,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:15,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:15,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743751620] [2020-10-22 01:15:15,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554328306] [2020-10-22 01:15:15,484 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:15,527 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:15:15,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:15,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:15,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:15,635 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:15:15,650 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:15,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:15,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:15,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1358269864] [2020-10-22 01:15:15,651 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:15,652 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:15,654 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-10-22 01:15:15,654 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:15,772 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [5337#(and (<= (+ ~i~0 ~j~0) 5) (= ULTIMATE.start_main_~condI~0 0)), 5338#(and (<= (+ (* 2 ~i~0) ~j~0) 5) (= ULTIMATE.start_main_~condI~0 0)), 5339#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 3 ~i~0) ~j~0) 5)), 5340#(and (<= (+ (* 4 ~i~0) ~j~0) 5) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:15:15,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-22 01:15:15,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:15,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-22 01:15:15,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-22 01:15:15,774 INFO L87 Difference]: Start difference. First operand 105 states and 257 transitions. Second operand 12 states. [2020-10-22 01:15:16,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:16,032 INFO L93 Difference]: Finished difference Result 149 states and 354 transitions. [2020-10-22 01:15:16,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:15:16,033 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2020-10-22 01:15:16,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:16,035 INFO L225 Difference]: With dead ends: 149 [2020-10-22 01:15:16,035 INFO L226 Difference]: Without dead ends: 143 [2020-10-22 01:15:16,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2020-10-22 01:15:16,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-22 01:15:16,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 113. [2020-10-22 01:15:16,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-22 01:15:16,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 282 transitions. [2020-10-22 01:15:16,040 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 282 transitions. Word has length 11 [2020-10-22 01:15:16,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:16,040 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 282 transitions. [2020-10-22 01:15:16,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-22 01:15:16,040 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 282 transitions. [2020-10-22 01:15:16,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:16,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:16,041 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:16,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-22 01:15:16,242 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:16,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:16,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1711561906, now seen corresponding path program 9 times [2020-10-22 01:15:16,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:16,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882002369] [2020-10-22 01:15:16,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:16,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:16,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882002369] [2020-10-22 01:15:16,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344763529] [2020-10-22 01:15:16,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:16,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-22 01:15:16,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:16,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:16,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:16,455 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:15:16,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:16,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:16,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:16,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2088763458] [2020-10-22 01:15:16,471 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:16,472 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:16,474 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-22 01:15:16,474 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:16,567 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:16,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:15:16,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:16,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:15:16,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:15:16,568 INFO L87 Difference]: Start difference. First operand 113 states and 282 transitions. Second operand 8 states. [2020-10-22 01:15:16,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:16,722 INFO L93 Difference]: Finished difference Result 152 states and 363 transitions. [2020-10-22 01:15:16,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:16,723 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-22 01:15:16,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:16,724 INFO L225 Difference]: With dead ends: 152 [2020-10-22 01:15:16,724 INFO L226 Difference]: Without dead ends: 147 [2020-10-22 01:15:16,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-10-22 01:15:16,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-22 01:15:16,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 112. [2020-10-22 01:15:16,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-22 01:15:16,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 277 transitions. [2020-10-22 01:15:16,730 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 277 transitions. Word has length 12 [2020-10-22 01:15:16,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:16,730 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 277 transitions. [2020-10-22 01:15:16,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:15:16,730 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 277 transitions. [2020-10-22 01:15:16,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:16,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:16,731 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:16,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-22 01:15:16,944 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:16,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:16,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1711533076, now seen corresponding path program 10 times [2020-10-22 01:15:16,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:16,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009787569] [2020-10-22 01:15:16,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:17,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:17,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009787569] [2020-10-22 01:15:17,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786870090] [2020-10-22 01:15:17,032 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:17,074 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:15:17,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:17,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:17,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:17,184 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:15:18,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:18,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:18,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-22 01:15:18,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [853627928] [2020-10-22 01:15:18,521 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:18,522 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:18,524 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-22 01:15:18,524 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:18,640 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [6209#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ ~i~0 ~j~0) 7))] [2020-10-22 01:15:18,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:15:18,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:18,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:15:18,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=151, Unknown=1, NotChecked=0, Total=210 [2020-10-22 01:15:18,641 INFO L87 Difference]: Start difference. First operand 112 states and 277 transitions. Second operand 9 states. [2020-10-22 01:15:25,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:25,356 INFO L93 Difference]: Finished difference Result 156 states and 370 transitions. [2020-10-22 01:15:25,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:25,357 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-22 01:15:25,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:25,358 INFO L225 Difference]: With dead ends: 156 [2020-10-22 01:15:25,358 INFO L226 Difference]: Without dead ends: 151 [2020-10-22 01:15:25,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=128, Invalid=287, Unknown=5, NotChecked=0, Total=420 [2020-10-22 01:15:25,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-22 01:15:25,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 112. [2020-10-22 01:15:25,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-22 01:15:25,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 279 transitions. [2020-10-22 01:15:25,364 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 279 transitions. Word has length 12 [2020-10-22 01:15:25,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:25,364 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 279 transitions. [2020-10-22 01:15:25,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:15:25,365 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 279 transitions. [2020-10-22 01:15:25,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:25,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:25,365 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:25,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:25,566 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:25,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:25,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1711532115, now seen corresponding path program 11 times [2020-10-22 01:15:25,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:25,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634755265] [2020-10-22 01:15:25,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:25,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:25,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634755265] [2020-10-22 01:15:25,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545609948] [2020-10-22 01:15:25,637 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:25,684 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:15:25,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:25,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:25,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:25,779 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:15:25,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:25,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:25,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:25,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1059724857] [2020-10-22 01:15:25,789 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:25,789 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:25,791 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 22 transitions. [2020-10-22 01:15:25,791 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:32,788 WARN L193 SmtUtils]: Spent 6.99 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-22 01:15:32,828 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:32,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:15:32,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:32,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:15:32,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:15:32,829 INFO L87 Difference]: Start difference. First operand 112 states and 279 transitions. Second operand 8 states. [2020-10-22 01:15:33,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:33,015 INFO L93 Difference]: Finished difference Result 148 states and 355 transitions. [2020-10-22 01:15:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:33,016 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-22 01:15:33,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:33,017 INFO L225 Difference]: With dead ends: 148 [2020-10-22 01:15:33,017 INFO L226 Difference]: Without dead ends: 143 [2020-10-22 01:15:33,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-10-22 01:15:33,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-22 01:15:33,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 111. [2020-10-22 01:15:33,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-22 01:15:33,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 274 transitions. [2020-10-22 01:15:33,021 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 274 transitions. Word has length 12 [2020-10-22 01:15:33,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:33,022 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 274 transitions. [2020-10-22 01:15:33,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:15:33,022 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 274 transitions. [2020-10-22 01:15:33,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:33,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:33,025 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:33,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:33,235 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:33,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:33,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1710639346, now seen corresponding path program 12 times [2020-10-22 01:15:33,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:33,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088392799] [2020-10-22 01:15:33,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:33,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:33,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088392799] [2020-10-22 01:15:33,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980330448] [2020-10-22 01:15:33,301 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:33,346 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-22 01:15:33,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:33,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:33,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:33,435 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:15:33,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:33,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:33,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:33,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1235060429] [2020-10-22 01:15:33,451 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:33,452 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:33,454 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-22 01:15:33,454 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:33,545 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [7076#(and (<= (+ ~i~0 ~j~0) 8) (= ULTIMATE.start_main_~condI~0 0)), 7077#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 2 ~i~0) ~j~0) 8))] [2020-10-22 01:15:33,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:15:33,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:33,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:15:33,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:15:33,547 INFO L87 Difference]: Start difference. First operand 111 states and 274 transitions. Second operand 10 states. [2020-10-22 01:15:33,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:33,769 INFO L93 Difference]: Finished difference Result 154 states and 369 transitions. [2020-10-22 01:15:33,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:33,770 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-10-22 01:15:33,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:33,772 INFO L225 Difference]: With dead ends: 154 [2020-10-22 01:15:33,772 INFO L226 Difference]: Without dead ends: 149 [2020-10-22 01:15:33,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-10-22 01:15:33,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-22 01:15:33,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 114. [2020-10-22 01:15:33,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-22 01:15:33,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 287 transitions. [2020-10-22 01:15:33,777 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 287 transitions. Word has length 12 [2020-10-22 01:15:33,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:33,777 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 287 transitions. [2020-10-22 01:15:33,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:15:33,778 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 287 transitions. [2020-10-22 01:15:33,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:33,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:33,778 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:33,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:33,991 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:33,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:33,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1710638385, now seen corresponding path program 13 times [2020-10-22 01:15:33,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:33,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727437990] [2020-10-22 01:15:33,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:34,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:34,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727437990] [2020-10-22 01:15:34,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165708714] [2020-10-22 01:15:34,072 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:34,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:34,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:34,216 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:15:34,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:34,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:34,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:34,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1588934310] [2020-10-22 01:15:34,236 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:34,237 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:34,239 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-10-22 01:15:34,239 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:41,406 WARN L193 SmtUtils]: Spent 7.15 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-22 01:15:41,430 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:41,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:15:41,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:41,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:15:41,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:15:41,431 INFO L87 Difference]: Start difference. First operand 114 states and 287 transitions. Second operand 8 states. [2020-10-22 01:15:41,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:41,628 INFO L93 Difference]: Finished difference Result 146 states and 353 transitions. [2020-10-22 01:15:41,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:41,629 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-22 01:15:41,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:41,630 INFO L225 Difference]: With dead ends: 146 [2020-10-22 01:15:41,630 INFO L226 Difference]: Without dead ends: 141 [2020-10-22 01:15:41,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2020-10-22 01:15:41,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-22 01:15:41,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 113. [2020-10-22 01:15:41,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-22 01:15:41,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 282 transitions. [2020-10-22 01:15:41,635 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 282 transitions. Word has length 12 [2020-10-22 01:15:41,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:41,636 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 282 transitions. [2020-10-22 01:15:41,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:15:41,636 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 282 transitions. [2020-10-22 01:15:41,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:41,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:41,637 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:41,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-22 01:15:41,849 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:41,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:41,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1710609555, now seen corresponding path program 14 times [2020-10-22 01:15:41,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:41,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895400103] [2020-10-22 01:15:41,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:41,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895400103] [2020-10-22 01:15:41,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380245640] [2020-10-22 01:15:41,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:41,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:15:41,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:41,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:41,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:42,058 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:15:42,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:42,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:42,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:42,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1668099722] [2020-10-22 01:15:42,108 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:42,109 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:42,111 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 22 transitions. [2020-10-22 01:15:42,111 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:44,179 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:15:44,242 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [7952#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ ~i~0 ~j~0) 7))] [2020-10-22 01:15:44,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:15:44,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:44,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:15:44,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-22 01:15:44,244 INFO L87 Difference]: Start difference. First operand 113 states and 282 transitions. Second operand 9 states. [2020-10-22 01:15:44,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:44,462 INFO L93 Difference]: Finished difference Result 149 states and 359 transitions. [2020-10-22 01:15:44,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:44,463 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-22 01:15:44,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:44,464 INFO L225 Difference]: With dead ends: 149 [2020-10-22 01:15:44,464 INFO L226 Difference]: Without dead ends: 144 [2020-10-22 01:15:44,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2020-10-22 01:15:44,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-22 01:15:44,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 113. [2020-10-22 01:15:44,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-22 01:15:44,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 284 transitions. [2020-10-22 01:15:44,469 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 284 transitions. Word has length 12 [2020-10-22 01:15:44,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:44,469 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 284 transitions. [2020-10-22 01:15:44,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:15:44,470 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 284 transitions. [2020-10-22 01:15:44,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:44,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:44,470 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:44,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-22 01:15:44,683 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:44,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:44,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1710608594, now seen corresponding path program 15 times [2020-10-22 01:15:44,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:44,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049509837] [2020-10-22 01:15:44,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:44,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:44,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049509837] [2020-10-22 01:15:44,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425096652] [2020-10-22 01:15:44,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:44,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-22 01:15:44,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:44,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:44,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:44,916 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:15:44,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:44,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:44,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:44,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1957299188] [2020-10-22 01:15:44,926 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:44,927 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:44,929 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-10-22 01:15:44,929 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:44,988 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:44,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:15:44,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:44,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:15:44,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:15:44,989 INFO L87 Difference]: Start difference. First operand 113 states and 284 transitions. Second operand 8 states. [2020-10-22 01:15:45,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:45,192 INFO L93 Difference]: Finished difference Result 149 states and 352 transitions. [2020-10-22 01:15:45,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:45,195 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-22 01:15:45,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:45,196 INFO L225 Difference]: With dead ends: 149 [2020-10-22 01:15:45,196 INFO L226 Difference]: Without dead ends: 144 [2020-10-22 01:15:45,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-22 01:15:45,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-22 01:15:45,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 112. [2020-10-22 01:15:45,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-22 01:15:45,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 275 transitions. [2020-10-22 01:15:45,201 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 275 transitions. Word has length 12 [2020-10-22 01:15:45,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:45,201 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 275 transitions. [2020-10-22 01:15:45,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:15:45,201 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 275 transitions. [2020-10-22 01:15:45,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:45,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:45,203 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:45,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-22 01:15:45,414 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:45,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:45,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1682933716, now seen corresponding path program 16 times [2020-10-22 01:15:45,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:45,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735359666] [2020-10-22 01:15:45,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:45,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:45,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735359666] [2020-10-22 01:15:45,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684550614] [2020-10-22 01:15:45,485 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:45,530 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:15:45,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:45,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:45,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:45,612 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:15:45,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:45,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:45,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:45,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1684024920] [2020-10-22 01:15:45,624 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:45,625 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:45,628 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 32 transitions. [2020-10-22 01:15:45,628 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:46,435 WARN L193 SmtUtils]: Spent 805.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:15:46,908 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-10-22 01:15:46,957 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-22 01:15:46,958 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 01:15:47,027 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [8821#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ ~i~0 ~j~0) 7)), 8822#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 2 ~i~0) ~j~0) 7)), 8823#(and (<= (+ (* 3 ~i~0) ~j~0) 7) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:15:47,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-22 01:15:47,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:47,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-22 01:15:47,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:15:47,028 INFO L87 Difference]: Start difference. First operand 112 states and 275 transitions. Second operand 11 states. [2020-10-22 01:15:47,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:47,330 INFO L93 Difference]: Finished difference Result 174 states and 410 transitions. [2020-10-22 01:15:47,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-22 01:15:47,331 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-10-22 01:15:47,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:47,332 INFO L225 Difference]: With dead ends: 174 [2020-10-22 01:15:47,333 INFO L226 Difference]: Without dead ends: 169 [2020-10-22 01:15:47,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2020-10-22 01:15:47,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-22 01:15:47,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 118. [2020-10-22 01:15:47,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-22 01:15:47,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 295 transitions. [2020-10-22 01:15:47,338 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 295 transitions. Word has length 12 [2020-10-22 01:15:47,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:47,339 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 295 transitions. [2020-10-22 01:15:47,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-22 01:15:47,339 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 295 transitions. [2020-10-22 01:15:47,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:47,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:47,339 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:47,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-22 01:15:47,540 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:47,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:47,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1682932755, now seen corresponding path program 17 times [2020-10-22 01:15:47,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:47,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428276829] [2020-10-22 01:15:47,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:47,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:47,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428276829] [2020-10-22 01:15:47,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133260103] [2020-10-22 01:15:47,610 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:47,674 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-22 01:15:47,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:47,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:47,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:47,756 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:15:47,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:47,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:47,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:47,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1650897851] [2020-10-22 01:15:47,768 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:47,769 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:47,771 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-22 01:15:47,772 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:51,962 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 22 DAG size of output: 6 [2020-10-22 01:15:51,963 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:51,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:15:51,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:51,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:15:51,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:15:51,965 INFO L87 Difference]: Start difference. First operand 118 states and 295 transitions. Second operand 8 states. [2020-10-22 01:15:52,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:52,181 INFO L93 Difference]: Finished difference Result 174 states and 412 transitions. [2020-10-22 01:15:52,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:52,182 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-22 01:15:52,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:52,184 INFO L225 Difference]: With dead ends: 174 [2020-10-22 01:15:52,184 INFO L226 Difference]: Without dead ends: 169 [2020-10-22 01:15:52,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-10-22 01:15:52,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-22 01:15:52,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 117. [2020-10-22 01:15:52,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-22 01:15:52,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 290 transitions. [2020-10-22 01:15:52,189 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 290 transitions. Word has length 12 [2020-10-22 01:15:52,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:52,189 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 290 transitions. [2020-10-22 01:15:52,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:15:52,189 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 290 transitions. [2020-10-22 01:15:52,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:52,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:52,190 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:52,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-22 01:15:52,403 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:52,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:52,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1682903925, now seen corresponding path program 18 times [2020-10-22 01:15:52,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:52,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185171950] [2020-10-22 01:15:52,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:52,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:52,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185171950] [2020-10-22 01:15:52,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133070311] [2020-10-22 01:15:52,499 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:52,548 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-22 01:15:52,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:52,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:52,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:52,631 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:15:52,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:52,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:52,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:52,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1155584602] [2020-10-22 01:15:52,639 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:52,640 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:52,642 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-10-22 01:15:52,642 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:54,699 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:15:54,787 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [9768#(and (<= (+ ~i~0 ~j~0) 8) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:15:54,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:15:54,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:54,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:15:54,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-22 01:15:54,788 INFO L87 Difference]: Start difference. First operand 117 states and 290 transitions. Second operand 9 states. [2020-10-22 01:15:55,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:55,008 INFO L93 Difference]: Finished difference Result 170 states and 401 transitions. [2020-10-22 01:15:55,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:55,009 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-22 01:15:55,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:55,010 INFO L225 Difference]: With dead ends: 170 [2020-10-22 01:15:55,010 INFO L226 Difference]: Without dead ends: 165 [2020-10-22 01:15:55,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2020-10-22 01:15:55,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-22 01:15:55,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 118. [2020-10-22 01:15:55,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-22 01:15:55,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 295 transitions. [2020-10-22 01:15:55,017 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 295 transitions. Word has length 12 [2020-10-22 01:15:55,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:55,017 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 295 transitions. [2020-10-22 01:15:55,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:15:55,017 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 295 transitions. [2020-10-22 01:15:55,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:55,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:55,018 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:55,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:55,219 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:55,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:55,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1682902964, now seen corresponding path program 19 times [2020-10-22 01:15:55,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:55,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741188995] [2020-10-22 01:15:55,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:55,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:55,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741188995] [2020-10-22 01:15:55,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291796707] [2020-10-22 01:15:55,285 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 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 [2020-10-22 01:15:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:55,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:55,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:55,426 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:15:55,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:55,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:55,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:55,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1808713540] [2020-10-22 01:15:55,438 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:55,439 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:55,441 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-22 01:15:55,441 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:59,619 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 22 DAG size of output: 6 [2020-10-22 01:15:59,619 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:59,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:15:59,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:59,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:15:59,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:15:59,621 INFO L87 Difference]: Start difference. First operand 118 states and 295 transitions. Second operand 8 states. [2020-10-22 01:15:59,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:59,824 INFO L93 Difference]: Finished difference Result 170 states and 403 transitions. [2020-10-22 01:15:59,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:59,825 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-22 01:15:59,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:59,827 INFO L225 Difference]: With dead ends: 170 [2020-10-22 01:15:59,827 INFO L226 Difference]: Without dead ends: 165 [2020-10-22 01:15:59,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2020-10-22 01:15:59,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-22 01:15:59,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 116. [2020-10-22 01:15:59,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-22 01:15:59,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 285 transitions. [2020-10-22 01:15:59,832 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 285 transitions. Word has length 12 [2020-10-22 01:15:59,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:59,832 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 285 transitions. [2020-10-22 01:15:59,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:15:59,832 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 285 transitions. [2020-10-22 01:15:59,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:59,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:59,833 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:16:00,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-22 01:16:00,043 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:16:00,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:00,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1682010195, now seen corresponding path program 20 times [2020-10-22 01:16:00,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:00,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766307037] [2020-10-22 01:16:00,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:00,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:00,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766307037] [2020-10-22 01:16:00,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753267476] [2020-10-22 01:16:00,116 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 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 [2020-10-22 01:16:00,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:16:00,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:16:00,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:16:00,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:00,257 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:16:00,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:00,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:00,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:16:00,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [300563074] [2020-10-22 01:16:00,297 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:00,298 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:00,300 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-10-22 01:16:00,300 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:00,744 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:16:07,877 WARN L193 SmtUtils]: Spent 7.03 s on a formula simplification. DAG size of input: 39 DAG size of output: 7 [2020-10-22 01:16:08,702 WARN L193 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 7 [2020-10-22 01:16:11,238 WARN L193 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 22 DAG size of output: 6 [2020-10-22 01:16:11,268 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [10697#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ ~i~0 ~j~0) 7)), 10698#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 2 ~i~0) ~j~0) 7))] [2020-10-22 01:16:11,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:16:11,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:11,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:16:11,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:16:11,270 INFO L87 Difference]: Start difference. First operand 116 states and 285 transitions. Second operand 10 states. [2020-10-22 01:16:11,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:11,532 INFO L93 Difference]: Finished difference Result 183 states and 422 transitions. [2020-10-22 01:16:11,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:16:11,533 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-10-22 01:16:11,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:11,534 INFO L225 Difference]: With dead ends: 183 [2020-10-22 01:16:11,534 INFO L226 Difference]: Without dead ends: 178 [2020-10-22 01:16:11,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2020-10-22 01:16:11,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-22 01:16:11,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 114. [2020-10-22 01:16:11,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-22 01:16:11,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 268 transitions. [2020-10-22 01:16:11,540 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 268 transitions. Word has length 12 [2020-10-22 01:16:11,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:11,540 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 268 transitions. [2020-10-22 01:16:11,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:16:11,540 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 268 transitions. [2020-10-22 01:16:11,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:16:11,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:11,541 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:16:11,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-22 01:16:11,752 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:16:11,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:11,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1396877225, now seen corresponding path program 5 times [2020-10-22 01:16:11,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:11,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716939878] [2020-10-22 01:16:11,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:11,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716939878] [2020-10-22 01:16:11,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373383169] [2020-10-22 01:16:11,845 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 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 [2020-10-22 01:16:11,905 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-22 01:16:11,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:16:11,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:16:11,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:12,021 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:16:12,046 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:12,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:12,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-22 01:16:12,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1518999622] [2020-10-22 01:16:12,048 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:12,049 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:12,050 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-10-22 01:16:12,051 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:15,864 WARN L193 SmtUtils]: Spent 3.77 s on a formula simplification. DAG size of input: 39 DAG size of output: 9 [2020-10-22 01:16:16,247 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 9 [2020-10-22 01:16:21,336 WARN L193 SmtUtils]: Spent 5.07 s on a formula simplification. DAG size of input: 39 DAG size of output: 9 [2020-10-22 01:16:23,796 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 25 DAG size of output: 7 [2020-10-22 01:16:23,817 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:16:23,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:16:23,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:23,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:16:23,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:16:23,818 INFO L87 Difference]: Start difference. First operand 114 states and 268 transitions. Second operand 9 states. [2020-10-22 01:16:23,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:23,973 INFO L93 Difference]: Finished difference Result 164 states and 382 transitions. [2020-10-22 01:16:23,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:16:23,974 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-22 01:16:23,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:23,976 INFO L225 Difference]: With dead ends: 164 [2020-10-22 01:16:23,976 INFO L226 Difference]: Without dead ends: 159 [2020-10-22 01:16:23,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-22 01:16:23,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-22 01:16:23,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-22 01:16:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-22 01:16:23,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 299 transitions. [2020-10-22 01:16:23,980 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 299 transitions. Word has length 12 [2020-10-22 01:16:23,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:23,980 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 299 transitions. [2020-10-22 01:16:23,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:16:23,981 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 299 transitions. [2020-10-22 01:16:23,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:16:23,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:23,981 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:16:24,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:24,182 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:16:24,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:24,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1150962717, now seen corresponding path program 5 times [2020-10-22 01:16:24,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:24,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934918996] [2020-10-22 01:16:24,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:24,267 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:24,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934918996] [2020-10-22 01:16:24,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372381636] [2020-10-22 01:16:24,268 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 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 [2020-10-22 01:16:24,311 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-22 01:16:24,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:16:24,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:16:24,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:24,436 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:16:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:24,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:24,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:16:24,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [44604417] [2020-10-22 01:16:24,451 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:24,451 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:24,453 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-22 01:16:24,453 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:26,505 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 21 [2020-10-22 01:16:26,661 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [11643#(and (<= (+ ~i~0 ~j~0) 6) (= ULTIMATE.start_main_~condI~0 0)), 11644#(and (<= (+ (* 2 ~i~0) ~j~0) 6) (= ULTIMATE.start_main_~condI~0 0)), 11645#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 3 ~i~0) ~j~0) 6)), 11646#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 4 ~i~0) ~j~0) 6)), 11647#(and (<= (+ (* 5 ~i~0) ~j~0) 6) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:16:26,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-22 01:16:26,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:26,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-22 01:16:26,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-10-22 01:16:26,663 INFO L87 Difference]: Start difference. First operand 122 states and 299 transitions. Second operand 14 states. [2020-10-22 01:16:26,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:26,998 INFO L93 Difference]: Finished difference Result 175 states and 416 transitions. [2020-10-22 01:16:26,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-22 01:16:26,998 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 12 [2020-10-22 01:16:26,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:26,999 INFO L225 Difference]: With dead ends: 175 [2020-10-22 01:16:27,000 INFO L226 Difference]: Without dead ends: 169 [2020-10-22 01:16:27,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=182, Invalid=574, Unknown=0, NotChecked=0, Total=756 [2020-10-22 01:16:27,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-22 01:16:27,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 132. [2020-10-22 01:16:27,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-22 01:16:27,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-22 01:16:27,004 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 12 [2020-10-22 01:16:27,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:27,004 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-22 01:16:27,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-22 01:16:27,005 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-22 01:16:27,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:16:27,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:27,006 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:16:27,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:27,217 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:16:27,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:27,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1518812168, now seen corresponding path program 21 times [2020-10-22 01:16:27,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:27,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735816438] [2020-10-22 01:16:27,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:27,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:27,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735816438] [2020-10-22 01:16:27,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019880520] [2020-10-22 01:16:27,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:27,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-22 01:16:27,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:16:27,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:16:27,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:27,480 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:16:27,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:27,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:27,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:16:27,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [321933072] [2020-10-22 01:16:27,493 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:27,495 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:27,497 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-22 01:16:27,497 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:32,987 WARN L193 SmtUtils]: Spent 5.45 s on a formula simplification. DAG size of input: 42 DAG size of output: 9 [2020-10-22 01:16:38,581 WARN L193 SmtUtils]: Spent 5.59 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-22 01:16:42,418 WARN L193 SmtUtils]: Spent 3.84 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-22 01:16:42,436 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:16:42,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:16:42,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:42,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:16:42,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:16:42,438 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 9 states. [2020-10-22 01:16:42,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:42,634 INFO L93 Difference]: Finished difference Result 183 states and 437 transitions. [2020-10-22 01:16:42,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:16:42,635 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-22 01:16:42,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:42,636 INFO L225 Difference]: With dead ends: 183 [2020-10-22 01:16:42,637 INFO L226 Difference]: Without dead ends: 178 [2020-10-22 01:16:42,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420 [2020-10-22 01:16:42,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-22 01:16:42,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 131. [2020-10-22 01:16:42,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-22 01:16:42,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 327 transitions. [2020-10-22 01:16:42,642 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 327 transitions. Word has length 13 [2020-10-22 01:16:42,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:42,642 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 327 transitions. [2020-10-22 01:16:42,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:16:42,642 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 327 transitions. [2020-10-22 01:16:42,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:16:42,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:42,643 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:16:42,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-10-22 01:16:42,855 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:16:42,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:42,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1518783338, now seen corresponding path program 22 times [2020-10-22 01:16:42,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:42,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161999782] [2020-10-22 01:16:42,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:42,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:42,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161999782] [2020-10-22 01:16:42,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144489529] [2020-10-22 01:16:42,958 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:43,016 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:16:43,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:16:43,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:16:43,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:43,150 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:16:46,478 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 20 [2020-10-22 01:16:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:46,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:46,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-22 01:16:46,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1445177478] [2020-10-22 01:16:46,480 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:46,482 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:46,484 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-22 01:16:46,484 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:46,628 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [12663#(and (<= (+ ~i~0 ~j~0) 9) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:16:46,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:16:46,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:46,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:16:46,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=196, Unknown=1, NotChecked=0, Total=272 [2020-10-22 01:16:46,630 INFO L87 Difference]: Start difference. First operand 131 states and 327 transitions. Second operand 10 states. [2020-10-22 01:16:53,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:53,500 INFO L93 Difference]: Finished difference Result 192 states and 456 transitions. [2020-10-22 01:16:53,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:16:53,501 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-22 01:16:53,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:53,503 INFO L225 Difference]: With dead ends: 192 [2020-10-22 01:16:53,503 INFO L226 Difference]: Without dead ends: 187 [2020-10-22 01:16:53,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=168, Invalid=378, Unknown=6, NotChecked=0, Total=552 [2020-10-22 01:16:53,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-22 01:16:53,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 131. [2020-10-22 01:16:53,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-22 01:16:53,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 329 transitions. [2020-10-22 01:16:53,508 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 329 transitions. Word has length 13 [2020-10-22 01:16:53,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:53,508 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 329 transitions. [2020-10-22 01:16:53,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:16:53,508 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 329 transitions. [2020-10-22 01:16:53,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:16:53,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:53,509 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:16:53,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:53,720 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:16:53,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:53,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1518782377, now seen corresponding path program 23 times [2020-10-22 01:16:53,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:53,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422504649] [2020-10-22 01:16:53,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:53,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422504649] [2020-10-22 01:16:53,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161108173] [2020-10-22 01:16:53,807 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:53,864 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:16:53,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:16:53,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:16:53,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:53,980 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:16:53,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:53,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:53,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:16:53,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1977854693] [2020-10-22 01:16:53,995 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:53,996 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:53,998 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-22 01:16:53,998 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:59,744 WARN L193 SmtUtils]: Spent 5.73 s on a formula simplification. DAG size of input: 42 DAG size of output: 9 [2020-10-22 01:16:59,800 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:16:59,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:16:59,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:59,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:16:59,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:16:59,801 INFO L87 Difference]: Start difference. First operand 131 states and 329 transitions. Second operand 9 states. [2020-10-22 01:17:00,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:17:00,020 INFO L93 Difference]: Finished difference Result 184 states and 441 transitions. [2020-10-22 01:17:00,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:17:00,020 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-22 01:17:00,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:17:00,022 INFO L225 Difference]: With dead ends: 184 [2020-10-22 01:17:00,022 INFO L226 Difference]: Without dead ends: 179 [2020-10-22 01:17:00,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2020-10-22 01:17:00,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-22 01:17:00,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 129. [2020-10-22 01:17:00,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-22 01:17:00,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 319 transitions. [2020-10-22 01:17:00,027 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 319 transitions. Word has length 13 [2020-10-22 01:17:00,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:17:00,027 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 319 transitions. [2020-10-22 01:17:00,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:17:00,027 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 319 transitions. [2020-10-22 01:17:00,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:17:00,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:17:00,027 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:17:00,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-22 01:17:00,229 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:17:00,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:17:00,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1517889608, now seen corresponding path program 24 times [2020-10-22 01:17:00,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:17:00,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055716656] [2020-10-22 01:17:00,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:17:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:00,327 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:00,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055716656] [2020-10-22 01:17:00,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292948689] [2020-10-22 01:17:00,328 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:00,372 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-22 01:17:00,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:17:00,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:17:00,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:17:00,515 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:17:00,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:00,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:17:00,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:17:00,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [570436237] [2020-10-22 01:17:00,551 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:17:00,552 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:17:00,553 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-22 01:17:00,553 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:17:06,805 WARN L193 SmtUtils]: Spent 6.20 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-22 01:17:06,845 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [13690#(and (<= (+ ~i~0 ~j~0) 11) (= ULTIMATE.start_main_~condI~0 0)), 13691#(and (<= (+ (* 2 ~i~0) ~j~0) 11) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:17:06,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-22 01:17:06,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:17:06,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-22 01:17:06,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-22 01:17:06,846 INFO L87 Difference]: Start difference. First operand 129 states and 319 transitions. Second operand 11 states. [2020-10-22 01:17:07,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:17:07,177 INFO L93 Difference]: Finished difference Result 192 states and 456 transitions. [2020-10-22 01:17:07,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:17:07,177 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-10-22 01:17:07,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:17:07,179 INFO L225 Difference]: With dead ends: 192 [2020-10-22 01:17:07,179 INFO L226 Difference]: Without dead ends: 187 [2020-10-22 01:17:07,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2020-10-22 01:17:07,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-22 01:17:07,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 132. [2020-10-22 01:17:07,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-22 01:17:07,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-22 01:17:07,188 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 13 [2020-10-22 01:17:07,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:17:07,188 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-22 01:17:07,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-22 01:17:07,188 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-22 01:17:07,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:17:07,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:17:07,189 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:17:07,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:07,400 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:17:07,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:17:07,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1517888647, now seen corresponding path program 25 times [2020-10-22 01:17:07,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:17:07,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267101397] [2020-10-22 01:17:07,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:17:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:07,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:07,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267101397] [2020-10-22 01:17:07,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563839585] [2020-10-22 01:17:07,479 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 [2020-10-22 01:17:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:07,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:17:07,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:17:09,739 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:17:15,932 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 43 DAG size of output: 20 [2020-10-22 01:17:15,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:15,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:17:15,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-22 01:17:15,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1264069945] [2020-10-22 01:17:15,934 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:17:15,935 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:17:15,936 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-22 01:17:15,936 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:17:23,578 WARN L193 SmtUtils]: Spent 7.61 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-22 01:17:23,601 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:17:23,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:17:23,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:17:23,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:17:23,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=168, Unknown=2, NotChecked=0, Total=240 [2020-10-22 01:17:23,603 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 9 states. [2020-10-22 01:17:34,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:17:34,062 INFO L93 Difference]: Finished difference Result 183 states and 439 transitions. [2020-10-22 01:17:34,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:17:34,062 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-22 01:17:34,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:17:34,064 INFO L225 Difference]: With dead ends: 183 [2020-10-22 01:17:34,064 INFO L226 Difference]: Without dead ends: 178 [2020-10-22 01:17:34,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=170, Invalid=375, Unknown=7, NotChecked=0, Total=552 [2020-10-22 01:17:34,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-22 01:17:34,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 131. [2020-10-22 01:17:34,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-22 01:17:34,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 327 transitions. [2020-10-22 01:17:34,068 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 327 transitions. Word has length 13 [2020-10-22 01:17:34,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:17:34,068 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 327 transitions. [2020-10-22 01:17:34,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:17:34,069 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 327 transitions. [2020-10-22 01:17:34,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:17:34,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:17:34,070 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:17:34,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-22 01:17:34,279 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:17:34,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:17:34,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1517859817, now seen corresponding path program 26 times [2020-10-22 01:17:34,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:17:34,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35959491] [2020-10-22 01:17:34,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:17:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:34,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:34,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35959491] [2020-10-22 01:17:34,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027470022] [2020-10-22 01:17:34,371 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 [2020-10-22 01:17:34,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:17:34,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:17:34,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:17:34,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:17:34,623 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:17:34,631 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:17:40,839 WARN L193 SmtUtils]: Spent 4.04 s on a formula simplification. DAG size of input: 65 DAG size of output: 32 [2020-10-22 01:17:40,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:40,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:17:40,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-22 01:17:40,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [77417071] [2020-10-22 01:17:40,842 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:17:40,843 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:17:40,846 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-22 01:17:40,846 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:17:45,026 WARN L193 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-22 01:17:45,705 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:17:45,732 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [14729#(and (<= (+ ~i~0 ~j~0) 10) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:17:45,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:17:45,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:17:45,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:17:45,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=199, Unknown=1, NotChecked=0, Total=272 [2020-10-22 01:17:45,733 INFO L87 Difference]: Start difference. First operand 131 states and 327 transitions. Second operand 10 states. [2020-10-22 01:17:56,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:17:56,068 INFO L93 Difference]: Finished difference Result 186 states and 445 transitions. [2020-10-22 01:17:56,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:17:56,073 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-22 01:17:56,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:17:56,075 INFO L225 Difference]: With dead ends: 186 [2020-10-22 01:17:56,075 INFO L226 Difference]: Without dead ends: 181 [2020-10-22 01:17:56,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=177, Invalid=417, Unknown=6, NotChecked=0, Total=600 [2020-10-22 01:17:56,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-22 01:17:56,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 130. [2020-10-22 01:17:56,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-22 01:17:56,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 326 transitions. [2020-10-22 01:17:56,079 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 326 transitions. Word has length 13 [2020-10-22 01:17:56,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:17:56,080 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 326 transitions. [2020-10-22 01:17:56,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:17:56,080 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 326 transitions. [2020-10-22 01:17:56,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:17:56,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:17:56,081 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:17:56,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-22 01:17:56,292 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:17:56,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:17:56,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1517858856, now seen corresponding path program 27 times [2020-10-22 01:17:56,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:17:56,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201035778] [2020-10-22 01:17:56,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:17:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:56,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:56,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201035778] [2020-10-22 01:17:56,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016495554] [2020-10-22 01:17:56,404 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 [2020-10-22 01:17:56,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-22 01:17:56,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:17:56,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:17:56,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:17:56,574 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:17:56,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:56,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:17:56,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:17:56,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [203272397] [2020-10-22 01:17:56,588 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:17:56,589 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:17:56,591 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-22 01:17:56,591 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:01,916 WARN L193 SmtUtils]: Spent 5.31 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-22 01:18:06,919 WARN L193 SmtUtils]: Spent 5.00 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-22 01:18:06,945 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:06,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:18:06,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:06,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:18:06,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:18:06,947 INFO L87 Difference]: Start difference. First operand 130 states and 326 transitions. Second operand 9 states. [2020-10-22 01:18:07,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:07,208 INFO L93 Difference]: Finished difference Result 176 states and 422 transitions. [2020-10-22 01:18:07,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:18:07,209 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-22 01:18:07,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:07,210 INFO L225 Difference]: With dead ends: 176 [2020-10-22 01:18:07,211 INFO L226 Difference]: Without dead ends: 171 [2020-10-22 01:18:07,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2020-10-22 01:18:07,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-22 01:18:07,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 128. [2020-10-22 01:18:07,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-22 01:18:07,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 316 transitions. [2020-10-22 01:18:07,215 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 316 transitions. Word has length 13 [2020-10-22 01:18:07,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:07,215 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 316 transitions. [2020-10-22 01:18:07,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:18:07,215 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 316 transitions. [2020-10-22 01:18:07,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:18:07,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:07,216 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:07,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-10-22 01:18:07,417 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:07,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:07,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1490183978, now seen corresponding path program 28 times [2020-10-22 01:18:07,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:07,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79198403] [2020-10-22 01:18:07,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:07,502 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:07,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79198403] [2020-10-22 01:18:07,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274129731] [2020-10-22 01:18:07,503 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 [2020-10-22 01:18:07,560 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:18:07,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:18:07,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:18:07,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:07,689 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:18:07,703 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:07,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:07,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:18:07,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1952332433] [2020-10-22 01:18:07,704 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:07,705 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:07,707 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-22 01:18:07,707 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:09,762 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:18:09,901 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [15744#(and (<= (+ (* 3 ~i~0) ~j~0) 11) (= ULTIMATE.start_main_~condI~0 0)), 15742#(and (<= (+ ~i~0 ~j~0) 11) (= ULTIMATE.start_main_~condI~0 0)), 15743#(and (<= (+ (* 2 ~i~0) ~j~0) 11) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:18:09,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-22 01:18:09,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:09,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-22 01:18:09,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2020-10-22 01:18:09,903 INFO L87 Difference]: Start difference. First operand 128 states and 316 transitions. Second operand 12 states. [2020-10-22 01:18:10,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:10,227 INFO L93 Difference]: Finished difference Result 185 states and 443 transitions. [2020-10-22 01:18:10,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:18:10,228 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2020-10-22 01:18:10,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:10,230 INFO L225 Difference]: With dead ends: 185 [2020-10-22 01:18:10,230 INFO L226 Difference]: Without dead ends: 180 [2020-10-22 01:18:10,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2020-10-22 01:18:10,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-22 01:18:10,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 133. [2020-10-22 01:18:10,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-22 01:18:10,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 337 transitions. [2020-10-22 01:18:10,234 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 337 transitions. Word has length 13 [2020-10-22 01:18:10,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:10,234 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 337 transitions. [2020-10-22 01:18:10,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-22 01:18:10,234 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 337 transitions. [2020-10-22 01:18:10,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:18:10,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:10,235 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:10,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-22 01:18:10,439 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:10,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:10,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1490183017, now seen corresponding path program 29 times [2020-10-22 01:18:10,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:10,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959779377] [2020-10-22 01:18:10,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:10,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:10,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959779377] [2020-10-22 01:18:10,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254470260] [2020-10-22 01:18:10,529 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 [2020-10-22 01:18:10,617 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:18:10,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:18:10,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:18:10,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:10,783 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:18:10,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:10,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:10,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:18:10,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [254495955] [2020-10-22 01:18:10,804 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:10,805 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:10,808 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 21 transitions. [2020-10-22 01:18:10,808 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:15,801 WARN L193 SmtUtils]: Spent 4.97 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-22 01:18:15,826 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:15,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:18:15,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:15,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:18:15,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:18:15,827 INFO L87 Difference]: Start difference. First operand 133 states and 337 transitions. Second operand 9 states. [2020-10-22 01:18:16,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:16,155 INFO L93 Difference]: Finished difference Result 180 states and 436 transitions. [2020-10-22 01:18:16,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:18:16,156 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-22 01:18:16,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:16,157 INFO L225 Difference]: With dead ends: 180 [2020-10-22 01:18:16,157 INFO L226 Difference]: Without dead ends: 175 [2020-10-22 01:18:16,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2020-10-22 01:18:16,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-22 01:18:16,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 132. [2020-10-22 01:18:16,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-22 01:18:16,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-22 01:18:16,162 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 13 [2020-10-22 01:18:16,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:16,162 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-22 01:18:16,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:18:16,162 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-22 01:18:16,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:18:16,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:16,163 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:16,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-22 01:18:16,375 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:16,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:16,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1490154187, now seen corresponding path program 30 times [2020-10-22 01:18:16,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:16,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061997187] [2020-10-22 01:18:16,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:16,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:16,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061997187] [2020-10-22 01:18:16,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138265981] [2020-10-22 01:18:16,472 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 [2020-10-22 01:18:16,533 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-22 01:18:16,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:18:16,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:18:16,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:16,686 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:18:16,697 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:16,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:16,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:18:16,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2030798852] [2020-10-22 01:18:16,698 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:16,699 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:16,702 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-22 01:18:16,702 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:16,782 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [16778#(and (<= (+ ~i~0 ~j~0) 13) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:18:16,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:18:16,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:16,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:18:16,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:18:16,783 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 10 states. [2020-10-22 01:18:17,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:17,127 INFO L93 Difference]: Finished difference Result 183 states and 442 transitions. [2020-10-22 01:18:17,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:18:17,128 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-22 01:18:17,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:17,129 INFO L225 Difference]: With dead ends: 183 [2020-10-22 01:18:17,129 INFO L226 Difference]: Without dead ends: 178 [2020-10-22 01:18:17,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=415, Unknown=0, NotChecked=0, Total=600 [2020-10-22 01:18:17,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-22 01:18:17,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 132. [2020-10-22 01:18:17,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-22 01:18:17,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 334 transitions. [2020-10-22 01:18:17,134 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 334 transitions. Word has length 13 [2020-10-22 01:18:17,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:17,134 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 334 transitions. [2020-10-22 01:18:17,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:18:17,134 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 334 transitions. [2020-10-22 01:18:17,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:18:17,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:17,135 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:17,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2020-10-22 01:18:17,345 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:17,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:17,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1490153226, now seen corresponding path program 31 times [2020-10-22 01:18:17,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:17,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386102341] [2020-10-22 01:18:17,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:17,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386102341] [2020-10-22 01:18:17,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397518552] [2020-10-22 01:18:17,435 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 [2020-10-22 01:18:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:17,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:18:17,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:17,586 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:18:17,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:17,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:17,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:18:17,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2030263380] [2020-10-22 01:18:17,601 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:17,601 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:17,603 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 21 transitions. [2020-10-22 01:18:17,603 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:22,421 WARN L193 SmtUtils]: Spent 4.80 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-22 01:18:22,447 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:22,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:18:22,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:22,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:18:22,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:18:22,448 INFO L87 Difference]: Start difference. First operand 132 states and 334 transitions. Second operand 9 states. [2020-10-22 01:18:22,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:22,753 INFO L93 Difference]: Finished difference Result 175 states and 425 transitions. [2020-10-22 01:18:22,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:18:22,754 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-22 01:18:22,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:22,756 INFO L225 Difference]: With dead ends: 175 [2020-10-22 01:18:22,756 INFO L226 Difference]: Without dead ends: 170 [2020-10-22 01:18:22,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2020-10-22 01:18:22,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-22 01:18:22,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 130. [2020-10-22 01:18:22,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-22 01:18:22,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 324 transitions. [2020-10-22 01:18:22,761 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 324 transitions. Word has length 13 [2020-10-22 01:18:22,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:22,762 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 324 transitions. [2020-10-22 01:18:22,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:18:22,762 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 324 transitions. [2020-10-22 01:18:22,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:18:22,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:22,763 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:22,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-10-22 01:18:22,975 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:22,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:22,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1489260457, now seen corresponding path program 32 times [2020-10-22 01:18:22,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:22,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345923569] [2020-10-22 01:18:22,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:23,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:23,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345923569] [2020-10-22 01:18:23,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32800090] [2020-10-22 01:18:23,072 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 [2020-10-22 01:18:23,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:18:23,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:18:23,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:18:23,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:23,310 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:18:23,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:23,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:23,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:18:23,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2132225619] [2020-10-22 01:18:23,347 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:23,349 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:23,352 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-22 01:18:23,352 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:24,474 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:18:26,537 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 23 [2020-10-22 01:18:26,579 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [17799#(and (<= (+ ~i~0 ~j~0) 12) (= ULTIMATE.start_main_~condI~0 0)), 17800#(and (<= (+ (* 2 ~i~0) ~j~0) 12) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:18:26,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-22 01:18:26,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:26,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-22 01:18:26,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-22 01:18:26,581 INFO L87 Difference]: Start difference. First operand 130 states and 324 transitions. Second operand 11 states. [2020-10-22 01:18:26,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:26,906 INFO L93 Difference]: Finished difference Result 185 states and 445 transitions. [2020-10-22 01:18:26,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:18:26,907 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-10-22 01:18:26,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:26,908 INFO L225 Difference]: With dead ends: 185 [2020-10-22 01:18:26,909 INFO L226 Difference]: Without dead ends: 180 [2020-10-22 01:18:26,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2020-10-22 01:18:26,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-22 01:18:26,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 133. [2020-10-22 01:18:26,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-22 01:18:26,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 337 transitions. [2020-10-22 01:18:26,913 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 337 transitions. Word has length 13 [2020-10-22 01:18:26,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:26,913 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 337 transitions. [2020-10-22 01:18:26,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-22 01:18:26,914 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 337 transitions. [2020-10-22 01:18:26,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:18:26,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:26,914 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:27,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:27,115 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:27,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:27,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1489259496, now seen corresponding path program 33 times [2020-10-22 01:18:27,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:27,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502406627] [2020-10-22 01:18:27,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:27,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:27,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502406627] [2020-10-22 01:18:27,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065641201] [2020-10-22 01:18:27,202 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 [2020-10-22 01:18:27,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-22 01:18:27,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:18:27,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:18:27,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:27,377 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:18:27,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:27,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:27,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:18:27,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1050704012] [2020-10-22 01:18:27,428 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:27,429 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:27,431 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 21 transitions. [2020-10-22 01:18:27,431 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:27,488 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:27,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:18:27,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:27,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:18:27,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:18:27,490 INFO L87 Difference]: Start difference. First operand 133 states and 337 transitions. Second operand 9 states. [2020-10-22 01:18:27,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:27,842 INFO L93 Difference]: Finished difference Result 176 states and 428 transitions. [2020-10-22 01:18:27,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:18:27,843 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-22 01:18:27,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:27,844 INFO L225 Difference]: With dead ends: 176 [2020-10-22 01:18:27,844 INFO L226 Difference]: Without dead ends: 171 [2020-10-22 01:18:27,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2020-10-22 01:18:27,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-22 01:18:27,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 132. [2020-10-22 01:18:27,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-22 01:18:27,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-22 01:18:27,849 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 13 [2020-10-22 01:18:27,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:27,849 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-22 01:18:27,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:18:27,849 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-22 01:18:27,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:18:27,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:27,850 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:28,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-22 01:18:28,050 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:28,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:28,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1489230666, now seen corresponding path program 34 times [2020-10-22 01:18:28,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:28,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043457753] [2020-10-22 01:18:28,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:28,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:28,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043457753] [2020-10-22 01:18:28,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381878827] [2020-10-22 01:18:28,140 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 [2020-10-22 01:18:28,183 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:18:28,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:18:28,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:18:28,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:28,302 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:18:28,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:28,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:28,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:18:28,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [412653433] [2020-10-22 01:18:28,340 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:28,341 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:28,342 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-22 01:18:28,342 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:33,004 WARN L193 SmtUtils]: Spent 4.65 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-22 01:18:35,053 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:18:35,090 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [18830#(and (<= (+ ~i~0 ~j~0) 9) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:18:35,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:18:35,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:35,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:18:35,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:18:35,091 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 10 states. [2020-10-22 01:18:35,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:35,434 INFO L93 Difference]: Finished difference Result 183 states and 442 transitions. [2020-10-22 01:18:35,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:18:35,435 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-22 01:18:35,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:35,436 INFO L225 Difference]: With dead ends: 183 [2020-10-22 01:18:35,437 INFO L226 Difference]: Without dead ends: 178 [2020-10-22 01:18:35,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2020-10-22 01:18:35,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-22 01:18:35,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 131. [2020-10-22 01:18:35,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-22 01:18:35,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 331 transitions. [2020-10-22 01:18:35,440 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 331 transitions. Word has length 13 [2020-10-22 01:18:35,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:35,441 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 331 transitions. [2020-10-22 01:18:35,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:18:35,441 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 331 transitions. [2020-10-22 01:18:35,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:18:35,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:35,441 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:35,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:35,643 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:35,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:35,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1489229705, now seen corresponding path program 35 times [2020-10-22 01:18:35,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:35,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748618579] [2020-10-22 01:18:35,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:35,727 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:35,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748618579] [2020-10-22 01:18:35,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635569810] [2020-10-22 01:18:35,728 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 [2020-10-22 01:18:35,790 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-22 01:18:35,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:18:35,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:18:35,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:35,943 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:18:35,954 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:35,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:35,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:18:35,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1916863325] [2020-10-22 01:18:35,956 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:35,957 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:35,959 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 21 transitions. [2020-10-22 01:18:35,960 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:43,341 WARN L193 SmtUtils]: Spent 7.37 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-22 01:18:43,374 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:43,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:18:43,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:43,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:18:43,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:18:43,375 INFO L87 Difference]: Start difference. First operand 131 states and 331 transitions. Second operand 9 states. [2020-10-22 01:18:43,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:43,654 INFO L93 Difference]: Finished difference Result 172 states and 407 transitions. [2020-10-22 01:18:43,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:18:43,655 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-22 01:18:43,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:43,656 INFO L225 Difference]: With dead ends: 172 [2020-10-22 01:18:43,656 INFO L226 Difference]: Without dead ends: 167 [2020-10-22 01:18:43,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=382, Unknown=0, NotChecked=0, Total=552 [2020-10-22 01:18:43,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-22 01:18:43,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 129. [2020-10-22 01:18:43,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-22 01:18:43,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 317 transitions. [2020-10-22 01:18:43,661 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 317 transitions. Word has length 13 [2020-10-22 01:18:43,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:43,661 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 317 transitions. [2020-10-22 01:18:43,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:18:43,661 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 317 transitions. [2020-10-22 01:18:43,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:18:43,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:43,662 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:43,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-22 01:18:43,873 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:43,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:43,873 INFO L82 PathProgramCache]: Analyzing trace with hash -631309448, now seen corresponding path program 36 times [2020-10-22 01:18:43,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:43,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281651720] [2020-10-22 01:18:43,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:43,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:43,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281651720] [2020-10-22 01:18:43,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017391310] [2020-10-22 01:18:43,961 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 [2020-10-22 01:18:44,028 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-22 01:18:44,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:18:44,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:18:44,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:44,133 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:18:44,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:44,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:44,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:18:44,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1764864227] [2020-10-22 01:18:44,147 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:44,148 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:44,150 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-22 01:18:44,151 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:44,315 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-22 01:18:44,316 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 01:18:44,401 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [19844#(and (<= (+ ~i~0 ~j~0) 9) (= ULTIMATE.start_main_~condI~0 0)), 19845#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 2 ~i~0) ~j~0) 9)), 19846#(and (<= (+ (* 3 ~i~0) ~j~0) 9) (= ULTIMATE.start_main_~condI~0 0)), 19847#(and (<= (+ (* 4 ~i~0) ~j~0) 9) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:18:44,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-22 01:18:44,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:44,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-22 01:18:44,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2020-10-22 01:18:44,402 INFO L87 Difference]: Start difference. First operand 129 states and 317 transitions. Second operand 13 states. [2020-10-22 01:18:44,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:44,853 INFO L93 Difference]: Finished difference Result 208 states and 490 transitions. [2020-10-22 01:18:44,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-22 01:18:44,854 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2020-10-22 01:18:44,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:44,855 INFO L225 Difference]: With dead ends: 208 [2020-10-22 01:18:44,855 INFO L226 Difference]: Without dead ends: 203 [2020-10-22 01:18:44,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=233, Invalid=697, Unknown=0, NotChecked=0, Total=930 [2020-10-22 01:18:44,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-22 01:18:44,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 135. [2020-10-22 01:18:44,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-22 01:18:44,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 341 transitions. [2020-10-22 01:18:44,861 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 341 transitions. Word has length 13 [2020-10-22 01:18:44,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:44,861 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 341 transitions. [2020-10-22 01:18:44,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-22 01:18:44,861 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 341 transitions. [2020-10-22 01:18:44,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:18:44,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:44,862 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:45,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:45,068 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:45,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:45,068 INFO L82 PathProgramCache]: Analyzing trace with hash -631308487, now seen corresponding path program 37 times [2020-10-22 01:18:45,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:45,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410454283] [2020-10-22 01:18:45,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:45,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410454283] [2020-10-22 01:18:45,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948891341] [2020-10-22 01:18:45,158 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 [2020-10-22 01:18:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:45,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:18:45,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:45,333 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:18:45,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:45,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:45,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:18:45,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [189201017] [2020-10-22 01:18:45,349 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:45,350 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:45,352 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-22 01:18:45,352 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider Received shutdown request... [2020-10-22 01:18:45,409 WARN L210 SmtUtils]: Removed 3 from assertion stack [2020-10-22 01:18:45,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-10-22 01:18:45,610 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-22 01:18:45,614 WARN L235 ceAbstractionStarter]: Timeout [2020-10-22 01:18:45,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 01:18:45 BasicIcfg [2020-10-22 01:18:45,615 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 01:18:45,616 INFO L168 Benchmark]: Toolchain (without parser) took 278384.06 ms. Allocated memory was 138.4 MB in the beginning and 257.4 MB in the end (delta: 119.0 MB). Free memory was 99.6 MB in the beginning and 146.3 MB in the end (delta: -46.6 MB). Peak memory consumption was 72.4 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:45,617 INFO L168 Benchmark]: CDTParser took 3.25 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-22 01:18:45,617 INFO L168 Benchmark]: CACSL2BoogieTranslator took 666.03 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 98.8 MB in the beginning and 157.1 MB in the end (delta: -58.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:45,618 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.81 ms. Allocated memory is still 201.3 MB. Free memory was 157.1 MB in the beginning and 155.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:45,618 INFO L168 Benchmark]: Boogie Preprocessor took 29.91 ms. Allocated memory is still 201.3 MB. Free memory was 155.1 MB in the beginning and 153.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:45,618 INFO L168 Benchmark]: RCFGBuilder took 462.84 ms. Allocated memory is still 201.3 MB. Free memory was 153.0 MB in the beginning and 130.3 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:45,619 INFO L168 Benchmark]: TraceAbstraction took 277166.81 ms. Allocated memory was 201.3 MB in the beginning and 257.4 MB in the end (delta: 56.1 MB). Free memory was 130.3 MB in the beginning and 146.3 MB in the end (delta: -15.9 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:45,621 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.25 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 666.03 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 98.8 MB in the beginning and 157.1 MB in the end (delta: -58.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.81 ms. Allocated memory is still 201.3 MB. Free memory was 157.1 MB in the beginning and 155.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.91 ms. Allocated memory is still 201.3 MB. Free memory was 155.1 MB in the beginning and 153.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 462.84 ms. Allocated memory is still 201.3 MB. Free memory was 153.0 MB in the beginning and 130.3 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 277166.81 ms. Allocated memory was 201.3 MB in the beginning and 257.4 MB in the end (delta: 56.1 MB). Free memory was 130.3 MB in the beginning and 146.3 MB in the end (delta: -15.9 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 710 VarBasedMoverChecksPositive, 10 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 19 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 67 PlacesBefore, 20 PlacesAfterwards, 66 TransitionsBefore, 16 TransitionsAfterwards, 1272 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 3 ChoiceCompositions, 65 TotalNumberOfCompositions, 1183 MoverChecksTotal - TimeoutResultAtElement [Line: 12]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 12). Cancelled while BasicCegarLoop was analyzing trace of length 14 with TraceHistMax 3,while SimplifyDDAWithTimeout was simplifying term of DAG size 32 for 6ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 277.0s, OverallIterations: 48, TraceHistogramMax: 5, AutomataDifference: 43.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 611 SDtfs, 3155 SDslu, 3260 SDs, 0 SdLazy, 2448 SolverSat, 572 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1321 GetRequests, 438 SyntacticMatches, 37 SemanticMatches, 846 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3342 ImplicationChecksByTransitivity, 65.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135occurred in iteration=47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 47 MinimizatonAttempts, 1754 StatesRemovedByMinimization, 47 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 27.7s InterpolantComputationTime, 1046 NumberOfCodeBlocks, 1046 NumberOfCodeBlocksAsserted, 135 NumberOfCheckSat, 957 ConstructedInterpolants, 6 QuantifiedInterpolants, 87801 SizeOfPredicates, 42 NumberOfNonLiveVariables, 4098 ConjunctsInSsa, 386 ConjunctsInUnsatCore, 89 InterpolantComputations, 5 PerfectInterpolantSequences, 0/304 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