/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 18:33:52,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 18:33:52,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 18:33:52,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 18:33:52,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 18:33:52,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 18:33:52,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 18:33:52,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 18:33:52,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 18:33:52,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 18:33:52,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 18:33:52,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 18:33:52,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 18:33:52,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 18:33:52,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 18:33:52,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 18:33:52,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 18:33:52,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 18:33:52,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 18:33:52,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 18:33:52,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 18:33:52,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 18:33:52,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 18:33:52,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 18:33:52,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 18:33:52,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 18:33:52,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 18:33:52,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 18:33:52,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 18:33:52,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 18:33:52,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 18:33:52,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 18:33:52,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 18:33:52,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 18:33:52,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 18:33:52,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 18:33:52,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 18:33:52,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 18:33:52,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 18:33:52,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 18:33:52,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 18:33:52,159 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-04-17 18:33:52,196 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 18:33:52,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 18:33:52,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 18:33:52,199 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 18:33:52,199 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 18:33:52,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 18:33:52,199 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 18:33:52,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 18:33:52,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 18:33:52,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 18:33:52,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 18:33:52,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 18:33:52,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 18:33:52,201 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 18:33:52,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 18:33:52,201 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 18:33:52,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 18:33:52,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 18:33:52,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 18:33:52,203 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 18:33:52,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 18:33:52,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 18:33:52,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 18:33:52,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 18:33:52,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 18:33:52,204 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 18:33:52,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 18:33:52,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 18:33:52,205 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 18:33:52,205 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 18:33:52,512 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 18:33:52,531 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 18:33:52,534 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 18:33:52,535 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 18:33:52,535 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 18:33:52,536 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i [2020-04-17 18:33:52,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08f219589/2069727c41914d1398fd190f93f824e1/FLAGa9d8287e1 [2020-04-17 18:33:53,129 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 18:33:53,130 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i [2020-04-17 18:33:53,147 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08f219589/2069727c41914d1398fd190f93f824e1/FLAGa9d8287e1 [2020-04-17 18:33:53,484 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08f219589/2069727c41914d1398fd190f93f824e1 [2020-04-17 18:33:53,494 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 18:33:53,517 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 18:33:53,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 18:33:53,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 18:33:53,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 18:33:53,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:33:53" (1/1) ... [2020-04-17 18:33:53,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7067c95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:33:53, skipping insertion in model container [2020-04-17 18:33:53,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:33:53" (1/1) ... [2020-04-17 18:33:53,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 18:33:53,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 18:33:53,837 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-04-17 18:33:54,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:33:54,215 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 18:33:54,228 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-04-17 18:33:54,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:33:54,380 INFO L208 MainTranslator]: Completed translation [2020-04-17 18:33:54,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:33:54 WrapperNode [2020-04-17 18:33:54,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 18:33:54,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 18:33:54,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 18:33:54,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 18:33:54,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:33:54" (1/1) ... [2020-04-17 18:33:54,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:33:54" (1/1) ... [2020-04-17 18:33:54,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 18:33:54,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 18:33:54,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 18:33:54,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 18:33:54,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:33:54" (1/1) ... [2020-04-17 18:33:54,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:33:54" (1/1) ... [2020-04-17 18:33:54,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:33:54" (1/1) ... [2020-04-17 18:33:54,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:33:54" (1/1) ... [2020-04-17 18:33:54,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:33:54" (1/1) ... [2020-04-17 18:33:54,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:33:54" (1/1) ... [2020-04-17 18:33:54,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:33:54" (1/1) ... [2020-04-17 18:33:54,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 18:33:54,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 18:33:54,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 18:33:54,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 18:33:54,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:33:54" (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 [2020-04-17 18:33:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure reader_fn [2020-04-17 18:33:54,619 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_fn [2020-04-17 18:33:54,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 18:33:54,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 18:33:54,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-17 18:33:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 18:33:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 18:33:54,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 18:33:54,622 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 18:33:55,088 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 18:33:55,089 INFO L295 CfgBuilder]: Removed 19 assume(true) statements. [2020-04-17 18:33:55,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:33:55 BoogieIcfgContainer [2020-04-17 18:33:55,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 18:33:55,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 18:33:55,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 18:33:55,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 18:33:55,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 06:33:53" (1/3) ... [2020-04-17 18:33:55,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@608e7c27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:33:55, skipping insertion in model container [2020-04-17 18:33:55,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:33:54" (2/3) ... [2020-04-17 18:33:55,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@608e7c27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:33:55, skipping insertion in model container [2020-04-17 18:33:55,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:33:55" (3/3) ... [2020-04-17 18:33:55,101 INFO L109 eAbstractionObserver]: Analyzing ICFG ring_1w1r-2.i [2020-04-17 18:33:55,112 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 18:33:55,112 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 18:33:55,120 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-04-17 18:33:55,121 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 18:33:55,153 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,153 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,154 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,154 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,154 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,154 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,155 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,155 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,155 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,156 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,156 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,156 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,157 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,157 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,157 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,157 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,158 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,158 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,158 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,158 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,159 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,159 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,159 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,159 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,159 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,160 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,160 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,160 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,160 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,160 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,161 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,161 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,161 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,161 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,161 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,162 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,162 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,162 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,162 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,163 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,163 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,163 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,163 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,164 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,164 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,164 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,164 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,165 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,165 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,165 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,165 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,165 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,166 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,166 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,166 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,166 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,167 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,167 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,167 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,167 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,168 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,168 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,168 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,168 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,168 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,169 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,169 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,169 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,169 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,170 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,170 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,170 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,170 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,171 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,171 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,171 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,171 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,172 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,172 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,172 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,172 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,173 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,173 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,173 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,173 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,174 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,174 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,174 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,174 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,175 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,175 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,175 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,175 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,175 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,176 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,176 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,176 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,176 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,177 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,177 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,177 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,177 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,178 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,178 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,178 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,178 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,178 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,179 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,179 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,179 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,180 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,180 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,180 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,180 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,181 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,181 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,181 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,181 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,181 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,182 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,182 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,182 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,182 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,183 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,183 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,183 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,184 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,184 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,188 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,188 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,188 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,188 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,189 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,189 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,189 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,189 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,190 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,190 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,190 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,190 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,191 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,191 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,191 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,191 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,191 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,192 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,192 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,192 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,192 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,193 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,193 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,193 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,193 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,193 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,194 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,194 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,194 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:33:55,215 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-04-17 18:33:55,236 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:33:55,237 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:33:55,237 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:33:55,237 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:33:55,237 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:33:55,237 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:33:55,238 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:33:55,238 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:33:55,257 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 128 transitions, 264 flow [2020-04-17 18:33:55,260 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 122 places, 128 transitions, 264 flow [2020-04-17 18:33:55,350 INFO L129 PetriNetUnfolder]: 10/127 cut-off events. [2020-04-17 18:33:55,350 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-04-17 18:33:55,361 INFO L80 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 127 events. 10/127 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 245 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2020-04-17 18:33:55,367 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 122 places, 128 transitions, 264 flow [2020-04-17 18:33:55,397 INFO L129 PetriNetUnfolder]: 10/127 cut-off events. [2020-04-17 18:33:55,397 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-04-17 18:33:55,399 INFO L80 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 127 events. 10/127 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 245 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2020-04-17 18:33:55,403 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4968 [2020-04-17 18:33:55,405 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:33:55,653 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:33:55,655 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:33:55,659 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:33:55,670 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:33:57,869 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-04-17 18:33:58,611 INFO L206 etLargeBlockEncoding]: Checked pairs total: 5902 [2020-04-17 18:33:58,611 INFO L214 etLargeBlockEncoding]: Total number of compositions: 114 [2020-04-17 18:33:58,615 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 34 transitions, 76 flow [2020-04-17 18:33:58,630 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 139 states. [2020-04-17 18:33:58,632 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2020-04-17 18:33:58,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-04-17 18:33:58,639 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:33:58,639 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-04-17 18:33:58,640 INFO L427 AbstractCegarLoop]: === Iteration 1 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:33:58,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:33:58,646 INFO L82 PathProgramCache]: Analyzing trace with hash 486263513, now seen corresponding path program 1 times [2020-04-17 18:33:58,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:33:58,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373207862] [2020-04-17 18:33:58,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:33:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:33:58,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:33:58,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373207862] [2020-04-17 18:33:58,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:33:58,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:33:58,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423707334] [2020-04-17 18:33:58,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 18:33:58,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:33:58,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 18:33:58,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 18:33:58,837 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 2 states. [2020-04-17 18:33:58,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:33:58,859 INFO L93 Difference]: Finished difference Result 139 states and 298 transitions. [2020-04-17 18:33:58,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 18:33:58,861 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-04-17 18:33:58,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:33:58,875 INFO L225 Difference]: With dead ends: 139 [2020-04-17 18:33:58,875 INFO L226 Difference]: Without dead ends: 128 [2020-04-17 18:33:58,876 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 18:33:58,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-04-17 18:33:58,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-04-17 18:33:58,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-04-17 18:33:58,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 277 transitions. [2020-04-17 18:33:58,936 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 277 transitions. Word has length 5 [2020-04-17 18:33:58,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:33:58,936 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 277 transitions. [2020-04-17 18:33:58,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 18:33:58,937 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 277 transitions. [2020-04-17 18:33:58,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-17 18:33:58,937 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:33:58,938 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-17 18:33:58,938 INFO L427 AbstractCegarLoop]: === Iteration 2 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:33:58,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:33:58,939 INFO L82 PathProgramCache]: Analyzing trace with hash -2105704442, now seen corresponding path program 1 times [2020-04-17 18:33:58,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:33:58,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509158370] [2020-04-17 18:33:58,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:33:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:33:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:33:59,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509158370] [2020-04-17 18:33:59,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:33:59,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:33:59,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305654851] [2020-04-17 18:33:59,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:33:59,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:33:59,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:33:59,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:33:59,027 INFO L87 Difference]: Start difference. First operand 128 states and 277 transitions. Second operand 3 states. [2020-04-17 18:33:59,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:33:59,065 INFO L93 Difference]: Finished difference Result 200 states and 438 transitions. [2020-04-17 18:33:59,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:33:59,069 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-17 18:33:59,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:33:59,073 INFO L225 Difference]: With dead ends: 200 [2020-04-17 18:33:59,074 INFO L226 Difference]: Without dead ends: 200 [2020-04-17 18:33:59,075 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:33:59,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-04-17 18:33:59,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 155. [2020-04-17 18:33:59,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-04-17 18:33:59,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 343 transitions. [2020-04-17 18:33:59,110 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 343 transitions. Word has length 6 [2020-04-17 18:33:59,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:33:59,110 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 343 transitions. [2020-04-17 18:33:59,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:33:59,110 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 343 transitions. [2020-04-17 18:33:59,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 18:33:59,111 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:33:59,111 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:33:59,112 INFO L427 AbstractCegarLoop]: === Iteration 3 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:33:59,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:33:59,115 INFO L82 PathProgramCache]: Analyzing trace with hash 282683680, now seen corresponding path program 1 times [2020-04-17 18:33:59,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:33:59,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460732550] [2020-04-17 18:33:59,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:33:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:33:59,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:33:59,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460732550] [2020-04-17 18:33:59,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:33:59,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-17 18:33:59,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809007683] [2020-04-17 18:33:59,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-17 18:33:59,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:33:59,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-17 18:33:59,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-17 18:33:59,371 INFO L87 Difference]: Start difference. First operand 155 states and 343 transitions. Second operand 7 states. [2020-04-17 18:33:59,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:33:59,734 INFO L93 Difference]: Finished difference Result 181 states and 391 transitions. [2020-04-17 18:33:59,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 18:33:59,735 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-04-17 18:33:59,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:33:59,738 INFO L225 Difference]: With dead ends: 181 [2020-04-17 18:33:59,738 INFO L226 Difference]: Without dead ends: 162 [2020-04-17 18:33:59,739 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-17 18:33:59,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-04-17 18:33:59,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-04-17 18:33:59,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-04-17 18:33:59,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 359 transitions. [2020-04-17 18:33:59,753 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 359 transitions. Word has length 10 [2020-04-17 18:33:59,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:33:59,753 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 359 transitions. [2020-04-17 18:33:59,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-17 18:33:59,753 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 359 transitions. [2020-04-17 18:33:59,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 18:33:59,755 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:33:59,755 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:33:59,755 INFO L427 AbstractCegarLoop]: === Iteration 4 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:33:59,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:33:59,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1366120806, now seen corresponding path program 1 times [2020-04-17 18:33:59,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:33:59,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131434166] [2020-04-17 18:33:59,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:33:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:34:00,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:34:00,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131434166] [2020-04-17 18:34:00,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:34:00,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-04-17 18:34:00,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183077129] [2020-04-17 18:34:00,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-17 18:34:00,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:34:00,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-17 18:34:00,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-04-17 18:34:00,359 INFO L87 Difference]: Start difference. First operand 162 states and 359 transitions. Second operand 12 states. [2020-04-17 18:34:01,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:34:01,827 INFO L93 Difference]: Finished difference Result 205 states and 441 transitions. [2020-04-17 18:34:01,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-04-17 18:34:01,828 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2020-04-17 18:34:01,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:34:01,830 INFO L225 Difference]: With dead ends: 205 [2020-04-17 18:34:01,830 INFO L226 Difference]: Without dead ends: 195 [2020-04-17 18:34:01,830 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=215, Invalid=487, Unknown=0, NotChecked=0, Total=702 [2020-04-17 18:34:01,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-04-17 18:34:01,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 183. [2020-04-17 18:34:01,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-04-17 18:34:01,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 401 transitions. [2020-04-17 18:34:01,844 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 401 transitions. Word has length 16 [2020-04-17 18:34:01,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:34:01,845 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 401 transitions. [2020-04-17 18:34:01,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-17 18:34:01,845 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 401 transitions. [2020-04-17 18:34:01,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 18:34:01,846 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:34:01,846 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:34:01,847 INFO L427 AbstractCegarLoop]: === Iteration 5 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:34:01,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:34:01,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1230311642, now seen corresponding path program 2 times [2020-04-17 18:34:01,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:34:01,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037154238] [2020-04-17 18:34:01,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:34:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:34:02,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:34:02,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037154238] [2020-04-17 18:34:02,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:34:02,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-04-17 18:34:02,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41009027] [2020-04-17 18:34:02,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-17 18:34:02,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:34:02,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-17 18:34:02,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-04-17 18:34:02,347 INFO L87 Difference]: Start difference. First operand 183 states and 401 transitions. Second operand 13 states. [2020-04-17 18:34:04,159 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-04-17 18:34:04,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:34:04,433 INFO L93 Difference]: Finished difference Result 208 states and 440 transitions. [2020-04-17 18:34:04,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-17 18:34:04,433 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-04-17 18:34:04,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:34:04,435 INFO L225 Difference]: With dead ends: 208 [2020-04-17 18:34:04,435 INFO L226 Difference]: Without dead ends: 197 [2020-04-17 18:34:04,437 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=283, Invalid=709, Unknown=0, NotChecked=0, Total=992 [2020-04-17 18:34:04,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-04-17 18:34:04,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 170. [2020-04-17 18:34:04,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-04-17 18:34:04,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 371 transitions. [2020-04-17 18:34:04,447 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 371 transitions. Word has length 16 [2020-04-17 18:34:04,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:34:04,448 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 371 transitions. [2020-04-17 18:34:04,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-17 18:34:04,448 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 371 transitions. [2020-04-17 18:34:04,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 18:34:04,449 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:34:04,449 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:34:04,449 INFO L427 AbstractCegarLoop]: === Iteration 6 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:34:04,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:34:04,450 INFO L82 PathProgramCache]: Analyzing trace with hash 145495381, now seen corresponding path program 1 times [2020-04-17 18:34:04,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:34:04,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696643472] [2020-04-17 18:34:04,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:34:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:34:05,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:34:05,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696643472] [2020-04-17 18:34:05,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:34:05,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-04-17 18:34:05,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634813876] [2020-04-17 18:34:05,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-17 18:34:05,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:34:05,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-17 18:34:05,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-04-17 18:34:05,215 INFO L87 Difference]: Start difference. First operand 170 states and 371 transitions. Second operand 16 states. [2020-04-17 18:34:06,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:34:06,944 INFO L93 Difference]: Finished difference Result 261 states and 568 transitions. [2020-04-17 18:34:06,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-17 18:34:06,945 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2020-04-17 18:34:06,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:34:06,948 INFO L225 Difference]: With dead ends: 261 [2020-04-17 18:34:06,948 INFO L226 Difference]: Without dead ends: 261 [2020-04-17 18:34:06,949 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2020-04-17 18:34:06,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-04-17 18:34:06,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 237. [2020-04-17 18:34:06,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-04-17 18:34:06,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 518 transitions. [2020-04-17 18:34:06,961 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 518 transitions. Word has length 18 [2020-04-17 18:34:06,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:34:06,962 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 518 transitions. [2020-04-17 18:34:06,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-17 18:34:06,963 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 518 transitions. [2020-04-17 18:34:06,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 18:34:06,965 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:34:06,965 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:34:06,965 INFO L427 AbstractCegarLoop]: === Iteration 7 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:34:06,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:34:06,965 INFO L82 PathProgramCache]: Analyzing trace with hash 349911829, now seen corresponding path program 2 times [2020-04-17 18:34:06,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:34:06,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501602634] [2020-04-17 18:34:06,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:34:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:34:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:34:07,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501602634] [2020-04-17 18:34:07,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:34:07,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-04-17 18:34:07,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695146557] [2020-04-17 18:34:07,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-17 18:34:07,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:34:07,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-17 18:34:07,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-04-17 18:34:07,884 INFO L87 Difference]: Start difference. First operand 237 states and 518 transitions. Second operand 16 states. [2020-04-17 18:34:09,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:34:09,592 INFO L93 Difference]: Finished difference Result 299 states and 656 transitions. [2020-04-17 18:34:09,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-17 18:34:09,593 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2020-04-17 18:34:09,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:34:09,596 INFO L225 Difference]: With dead ends: 299 [2020-04-17 18:34:09,597 INFO L226 Difference]: Without dead ends: 299 [2020-04-17 18:34:09,597 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2020-04-17 18:34:09,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-04-17 18:34:09,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 276. [2020-04-17 18:34:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-04-17 18:34:09,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 613 transitions. [2020-04-17 18:34:09,608 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 613 transitions. Word has length 18 [2020-04-17 18:34:09,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:34:09,608 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 613 transitions. [2020-04-17 18:34:09,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-17 18:34:09,609 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 613 transitions. [2020-04-17 18:34:09,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 18:34:09,611 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:34:09,611 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:34:09,611 INFO L427 AbstractCegarLoop]: === Iteration 8 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:34:09,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:34:09,612 INFO L82 PathProgramCache]: Analyzing trace with hash 599415313, now seen corresponding path program 3 times [2020-04-17 18:34:09,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:34:09,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844584708] [2020-04-17 18:34:09,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:34:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:34:10,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:34:10,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844584708] [2020-04-17 18:34:10,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:34:10,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-04-17 18:34:10,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886990340] [2020-04-17 18:34:10,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-17 18:34:10,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:34:10,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-17 18:34:10,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-04-17 18:34:10,441 INFO L87 Difference]: Start difference. First operand 276 states and 613 transitions. Second operand 16 states. [2020-04-17 18:34:12,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:34:12,330 INFO L93 Difference]: Finished difference Result 343 states and 762 transitions. [2020-04-17 18:34:12,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-17 18:34:12,331 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2020-04-17 18:34:12,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:34:12,334 INFO L225 Difference]: With dead ends: 343 [2020-04-17 18:34:12,334 INFO L226 Difference]: Without dead ends: 343 [2020-04-17 18:34:12,334 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2020-04-17 18:34:12,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-04-17 18:34:12,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 276. [2020-04-17 18:34:12,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-04-17 18:34:12,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 613 transitions. [2020-04-17 18:34:12,344 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 613 transitions. Word has length 18 [2020-04-17 18:34:12,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:34:12,345 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 613 transitions. [2020-04-17 18:34:12,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-17 18:34:12,345 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 613 transitions. [2020-04-17 18:34:12,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 18:34:12,347 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:34:12,347 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:34:12,347 INFO L427 AbstractCegarLoop]: === Iteration 9 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:34:12,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:34:12,347 INFO L82 PathProgramCache]: Analyzing trace with hash -898885167, now seen corresponding path program 4 times [2020-04-17 18:34:12,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:34:12,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039101662] [2020-04-17 18:34:12,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:34:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:34:13,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:34:13,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039101662] [2020-04-17 18:34:13,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:34:13,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-04-17 18:34:13,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226588087] [2020-04-17 18:34:13,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-17 18:34:13,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:34:13,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-17 18:34:13,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-04-17 18:34:13,056 INFO L87 Difference]: Start difference. First operand 276 states and 613 transitions. Second operand 16 states. [2020-04-17 18:34:13,806 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2020-04-17 18:34:14,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:34:14,948 INFO L93 Difference]: Finished difference Result 458 states and 1029 transitions. [2020-04-17 18:34:14,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-17 18:34:14,949 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2020-04-17 18:34:14,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:34:14,953 INFO L225 Difference]: With dead ends: 458 [2020-04-17 18:34:14,953 INFO L226 Difference]: Without dead ends: 458 [2020-04-17 18:34:14,954 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-04-17 18:34:14,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-04-17 18:34:14,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 282. [2020-04-17 18:34:14,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-04-17 18:34:14,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 626 transitions. [2020-04-17 18:34:14,964 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 626 transitions. Word has length 18 [2020-04-17 18:34:14,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:34:14,964 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 626 transitions. [2020-04-17 18:34:14,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-17 18:34:14,965 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 626 transitions. [2020-04-17 18:34:14,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 18:34:14,966 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:34:14,966 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:34:14,966 INFO L427 AbstractCegarLoop]: === Iteration 10 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:34:14,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:34:14,967 INFO L82 PathProgramCache]: Analyzing trace with hash 976531695, now seen corresponding path program 5 times [2020-04-17 18:34:14,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:34:14,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980751502] [2020-04-17 18:34:14,967 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:34:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:34:15,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:34:15,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980751502] [2020-04-17 18:34:15,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:34:15,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-04-17 18:34:15,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404986598] [2020-04-17 18:34:15,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-17 18:34:15,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:34:15,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-17 18:34:15,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-04-17 18:34:15,774 INFO L87 Difference]: Start difference. First operand 282 states and 626 transitions. Second operand 16 states. [2020-04-17 18:34:17,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:34:17,481 INFO L93 Difference]: Finished difference Result 358 states and 793 transitions. [2020-04-17 18:34:17,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-17 18:34:17,482 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2020-04-17 18:34:17,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:34:17,485 INFO L225 Difference]: With dead ends: 358 [2020-04-17 18:34:17,486 INFO L226 Difference]: Without dead ends: 358 [2020-04-17 18:34:17,486 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2020-04-17 18:34:17,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-04-17 18:34:17,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 282. [2020-04-17 18:34:17,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-04-17 18:34:17,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 626 transitions. [2020-04-17 18:34:17,495 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 626 transitions. Word has length 18 [2020-04-17 18:34:17,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:34:17,496 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 626 transitions. [2020-04-17 18:34:17,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-17 18:34:17,496 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 626 transitions. [2020-04-17 18:34:17,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 18:34:17,497 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:34:17,497 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:34:17,497 INFO L427 AbstractCegarLoop]: === Iteration 11 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:34:17,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:34:17,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1354999957, now seen corresponding path program 6 times [2020-04-17 18:34:17,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:34:17,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760643631] [2020-04-17 18:34:17,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:34:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:34:17,930 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-04-17 18:34:18,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:34:18,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760643631] [2020-04-17 18:34:18,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:34:18,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-04-17 18:34:18,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902321826] [2020-04-17 18:34:18,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-17 18:34:18,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:34:18,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-17 18:34:18,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-04-17 18:34:18,222 INFO L87 Difference]: Start difference. First operand 282 states and 626 transitions. Second operand 16 states. [2020-04-17 18:34:19,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:34:19,785 INFO L93 Difference]: Finished difference Result 340 states and 757 transitions. [2020-04-17 18:34:19,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-17 18:34:19,785 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2020-04-17 18:34:19,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:34:19,788 INFO L225 Difference]: With dead ends: 340 [2020-04-17 18:34:19,788 INFO L226 Difference]: Without dead ends: 340 [2020-04-17 18:34:19,789 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2020-04-17 18:34:19,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-04-17 18:34:19,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 261. [2020-04-17 18:34:19,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-04-17 18:34:19,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 584 transitions. [2020-04-17 18:34:19,797 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 584 transitions. Word has length 18 [2020-04-17 18:34:19,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:34:19,797 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 584 transitions. [2020-04-17 18:34:19,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-17 18:34:19,798 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 584 transitions. [2020-04-17 18:34:19,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-17 18:34:19,799 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:34:19,799 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:34:19,799 INFO L427 AbstractCegarLoop]: === Iteration 12 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:34:19,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:34:19,799 INFO L82 PathProgramCache]: Analyzing trace with hash 831318896, now seen corresponding path program 1 times [2020-04-17 18:34:19,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:34:19,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243997161] [2020-04-17 18:34:19,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:34:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:34:19,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:34:19,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243997161] [2020-04-17 18:34:19,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015627978] [2020-04-17 18:34:19,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:34:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:34:19,935 INFO L264 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2020-04-17 18:34:19,940 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:34:19,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:34:19,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:34:19,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-04-17 18:34:19,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191320956] [2020-04-17 18:34:19,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 18:34:19,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:34:19,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 18:34:19,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:34:19,958 INFO L87 Difference]: Start difference. First operand 261 states and 584 transitions. Second operand 5 states. [2020-04-17 18:34:19,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:34:19,998 INFO L93 Difference]: Finished difference Result 365 states and 813 transitions. [2020-04-17 18:34:19,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 18:34:19,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-04-17 18:34:19,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:34:20,000 INFO L225 Difference]: With dead ends: 365 [2020-04-17 18:34:20,000 INFO L226 Difference]: Without dead ends: 365 [2020-04-17 18:34:20,001 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:34:20,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-04-17 18:34:20,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 317. [2020-04-17 18:34:20,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-04-17 18:34:20,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 719 transitions. [2020-04-17 18:34:20,010 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 719 transitions. Word has length 21 [2020-04-17 18:34:20,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:34:20,010 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 719 transitions. [2020-04-17 18:34:20,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 18:34:20,011 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 719 transitions. [2020-04-17 18:34:20,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-17 18:34:20,012 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:34:20,012 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:34:20,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:34:20,215 INFO L427 AbstractCegarLoop]: === Iteration 13 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:34:20,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:34:20,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1273193156, now seen corresponding path program 7 times [2020-04-17 18:34:20,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:34:20,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651349895] [2020-04-17 18:34:20,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:34:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:34:20,898 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 42 [2020-04-17 18:34:21,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:34:21,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651349895] [2020-04-17 18:34:21,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169413420] [2020-04-17 18:34:21,653 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:34:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:34:21,733 WARN L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 93 conjunts are in the unsatisfiable core [2020-04-17 18:34:21,736 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:34:21,809 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2020-04-17 18:34:21,810 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:21,828 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-17 18:34:21,835 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:21,844 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:34:21,844 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:21,854 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:21,855 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:34:21,856 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:52, output treesize:31 [2020-04-17 18:34:22,443 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:22,445 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:22,446 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:34:22,472 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:22,473 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-17 18:34:22,480 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:22,541 INFO L619 ElimStorePlain]: treesize reduction 46, result has 54.5 percent of original size [2020-04-17 18:34:22,541 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:34:22,542 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:68, output treesize:55 [2020-04-17 18:34:22,717 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:34:22,718 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:34:22,740 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:22,742 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:22,744 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:22,765 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:22,769 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2020-04-17 18:34:22,770 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:22,798 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:22,802 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:22,804 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:22,824 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:22,829 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 56 [2020-04-17 18:34:22,830 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:22,837 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:22,838 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:22,839 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:22,841 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-17 18:34:22,842 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:22,861 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:22,862 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:34:22,862 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:269, output treesize:49 [2020-04-17 18:34:23,136 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:23,137 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 127 [2020-04-17 18:34:23,139 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:23,197 INFO L619 ElimStorePlain]: treesize reduction 64, result has 48.8 percent of original size [2020-04-17 18:34:23,198 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:34:23,199 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:34:23,200 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:61, output treesize:32 [2020-04-17 18:34:23,335 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:23,336 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 36 [2020-04-17 18:34:23,337 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:23,344 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:23,345 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:34:23,346 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:7 [2020-04-17 18:34:23,399 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:34:23,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:34:23,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31 [2020-04-17 18:34:23,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503296949] [2020-04-17 18:34:23,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-04-17 18:34:23,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:34:23,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-04-17 18:34:23,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=952, Unknown=0, NotChecked=0, Total=1056 [2020-04-17 18:34:23,401 INFO L87 Difference]: Start difference. First operand 317 states and 719 transitions. Second operand 33 states. [2020-04-17 18:34:24,331 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 51 [2020-04-17 18:34:24,560 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2020-04-17 18:34:24,779 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 61 [2020-04-17 18:34:25,653 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2020-04-17 18:34:27,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:34:27,718 INFO L93 Difference]: Finished difference Result 442 states and 981 transitions. [2020-04-17 18:34:27,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-04-17 18:34:27,719 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 23 [2020-04-17 18:34:27,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:34:27,722 INFO L225 Difference]: With dead ends: 442 [2020-04-17 18:34:27,722 INFO L226 Difference]: Without dead ends: 442 [2020-04-17 18:34:27,724 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=445, Invalid=2977, Unknown=0, NotChecked=0, Total=3422 [2020-04-17 18:34:27,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-04-17 18:34:27,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 379. [2020-04-17 18:34:27,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-04-17 18:34:27,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 857 transitions. [2020-04-17 18:34:27,734 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 857 transitions. Word has length 23 [2020-04-17 18:34:27,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:34:27,734 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 857 transitions. [2020-04-17 18:34:27,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-04-17 18:34:27,734 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 857 transitions. [2020-04-17 18:34:27,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-17 18:34:27,735 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:34:27,736 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:34:27,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:34:27,943 INFO L427 AbstractCegarLoop]: === Iteration 14 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:34:27,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:34:27,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1480527740, now seen corresponding path program 8 times [2020-04-17 18:34:27,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:34:27,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004330177] [2020-04-17 18:34:27,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:34:27,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:34:28,471 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2020-04-17 18:34:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:34:29,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004330177] [2020-04-17 18:34:29,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777712709] [2020-04-17 18:34:29,196 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:34:29,276 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 18:34:29,276 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:34:29,279 WARN L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 91 conjunts are in the unsatisfiable core [2020-04-17 18:34:29,281 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:34:29,295 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2020-04-17 18:34:29,296 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:29,315 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-17 18:34:29,319 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:29,321 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:34:29,322 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:29,332 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:29,333 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:34:29,333 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 18:34:29,832 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:29,833 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:29,834 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:34:29,860 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:29,861 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-17 18:34:29,862 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:29,919 INFO L619 ElimStorePlain]: treesize reduction 46, result has 54.5 percent of original size [2020-04-17 18:34:29,920 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:34:29,921 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:68, output treesize:55 [2020-04-17 18:34:30,112 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:34:30,112 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:34:30,124 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:30,126 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:30,127 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:30,152 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:30,154 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 56 [2020-04-17 18:34:30,155 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:30,162 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:30,163 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:30,164 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:30,183 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:30,184 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2020-04-17 18:34:30,186 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:30,192 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:30,193 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:30,194 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:30,196 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-17 18:34:30,197 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:30,215 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:30,216 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:34:30,216 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:269, output treesize:49 [2020-04-17 18:34:30,475 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:30,476 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 127 [2020-04-17 18:34:30,477 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:30,540 INFO L619 ElimStorePlain]: treesize reduction 64, result has 48.8 percent of original size [2020-04-17 18:34:30,541 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:34:30,542 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:34:30,542 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:61, output treesize:32 [2020-04-17 18:34:30,690 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:30,690 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 36 [2020-04-17 18:34:30,691 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:30,695 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:30,695 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:34:30,695 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:7 [2020-04-17 18:34:30,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:34:30,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:34:30,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 33 [2020-04-17 18:34:30,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823903241] [2020-04-17 18:34:30,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-04-17 18:34:30,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:34:30,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-04-17 18:34:30,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1084, Unknown=0, NotChecked=0, Total=1190 [2020-04-17 18:34:30,774 INFO L87 Difference]: Start difference. First operand 379 states and 857 transitions. Second operand 35 states. [2020-04-17 18:34:31,721 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 52 [2020-04-17 18:34:31,956 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 56 [2020-04-17 18:34:32,190 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 54 [2020-04-17 18:34:33,545 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2020-04-17 18:34:34,014 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2020-04-17 18:34:34,260 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2020-04-17 18:34:34,708 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2020-04-17 18:34:35,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:34:35,812 INFO L93 Difference]: Finished difference Result 427 states and 946 transitions. [2020-04-17 18:34:35,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-04-17 18:34:35,813 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 23 [2020-04-17 18:34:35,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:34:35,816 INFO L225 Difference]: With dead ends: 427 [2020-04-17 18:34:35,816 INFO L226 Difference]: Without dead ends: 427 [2020-04-17 18:34:35,818 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=448, Invalid=3212, Unknown=0, NotChecked=0, Total=3660 [2020-04-17 18:34:35,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-04-17 18:34:35,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 356. [2020-04-17 18:34:35,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-04-17 18:34:35,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 795 transitions. [2020-04-17 18:34:35,827 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 795 transitions. Word has length 23 [2020-04-17 18:34:35,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:34:35,828 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 795 transitions. [2020-04-17 18:34:35,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-04-17 18:34:35,828 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 795 transitions. [2020-04-17 18:34:35,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-17 18:34:35,829 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:34:35,829 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:34:36,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:34:36,032 INFO L427 AbstractCegarLoop]: === Iteration 15 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:34:36,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:34:36,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1675104768, now seen corresponding path program 9 times [2020-04-17 18:34:36,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:34:36,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972687352] [2020-04-17 18:34:36,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:34:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:34:36,545 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 41 [2020-04-17 18:34:37,291 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:34:37,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972687352] [2020-04-17 18:34:37,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134814341] [2020-04-17 18:34:37,291 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:34:37,360 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-17 18:34:37,361 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:34:37,363 WARN L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 95 conjunts are in the unsatisfiable core [2020-04-17 18:34:37,365 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:34:37,392 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2020-04-17 18:34:37,392 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 18:34:37,422 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-17 18:34:37,427 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:37,428 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:34:37,428 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:37,444 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:37,444 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:34:37,445 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 18:34:37,832 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:37,833 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:34:37,857 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:37,858 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-17 18:34:37,859 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:37,912 INFO L619 ElimStorePlain]: treesize reduction 46, result has 53.1 percent of original size [2020-04-17 18:34:37,913 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:34:37,914 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:65, output treesize:52 [2020-04-17 18:34:38,125 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:34:38,126 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:34:38,137 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:38,139 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:38,140 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:38,169 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:34:38,172 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:38,173 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2020-04-17 18:34:38,174 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:38,181 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:38,183 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:38,184 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:38,206 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:34:38,208 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:38,210 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-17 18:34:38,210 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:38,216 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:38,217 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:38,218 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:38,220 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 56 [2020-04-17 18:34:38,221 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:38,240 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:38,241 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:34:38,241 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:269, output treesize:49 [2020-04-17 18:34:38,490 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:38,490 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 127 [2020-04-17 18:34:38,491 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:38,551 INFO L619 ElimStorePlain]: treesize reduction 64, result has 48.8 percent of original size [2020-04-17 18:34:38,552 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:34:38,552 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:34:38,553 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:61, output treesize:32 [2020-04-17 18:34:38,687 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:38,688 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 36 [2020-04-17 18:34:38,688 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:38,698 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:38,698 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:34:38,698 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:7 [2020-04-17 18:34:38,777 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:34:38,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:34:38,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 34 [2020-04-17 18:34:38,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159952676] [2020-04-17 18:34:38,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-04-17 18:34:38,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:34:38,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-04-17 18:34:38,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1140, Unknown=0, NotChecked=0, Total=1260 [2020-04-17 18:34:38,779 INFO L87 Difference]: Start difference. First operand 356 states and 795 transitions. Second operand 36 states. [2020-04-17 18:34:39,758 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 54 [2020-04-17 18:34:40,145 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 58 [2020-04-17 18:34:40,513 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 54 [2020-04-17 18:34:41,892 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-04-17 18:34:42,305 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2020-04-17 18:34:42,747 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2020-04-17 18:34:43,054 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-04-17 18:34:43,549 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2020-04-17 18:34:44,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:34:44,415 INFO L93 Difference]: Finished difference Result 526 states and 1165 transitions. [2020-04-17 18:34:44,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-04-17 18:34:44,416 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 23 [2020-04-17 18:34:44,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:34:44,419 INFO L225 Difference]: With dead ends: 526 [2020-04-17 18:34:44,419 INFO L226 Difference]: Without dead ends: 526 [2020-04-17 18:34:44,422 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=543, Invalid=3617, Unknown=0, NotChecked=0, Total=4160 [2020-04-17 18:34:44,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-04-17 18:34:44,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 356. [2020-04-17 18:34:44,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-04-17 18:34:44,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 795 transitions. [2020-04-17 18:34:44,433 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 795 transitions. Word has length 23 [2020-04-17 18:34:44,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:34:44,433 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 795 transitions. [2020-04-17 18:34:44,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-04-17 18:34:44,434 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 795 transitions. [2020-04-17 18:34:44,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-17 18:34:44,436 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:34:44,436 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:34:44,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:34:44,639 INFO L427 AbstractCegarLoop]: === Iteration 16 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:34:44,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:34:44,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1319631296, now seen corresponding path program 10 times [2020-04-17 18:34:44,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:34:44,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356872283] [2020-04-17 18:34:44,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:34:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:34:45,783 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:34:45,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356872283] [2020-04-17 18:34:45,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607198961] [2020-04-17 18:34:45,784 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:34:45,845 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-17 18:34:45,845 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:34:45,846 WARN L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 101 conjunts are in the unsatisfiable core [2020-04-17 18:34:45,848 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:34:45,863 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2020-04-17 18:34:45,863 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:45,880 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-17 18:34:45,885 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:45,886 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:34:45,887 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:45,895 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:45,896 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:34:45,896 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:52, output treesize:31 [2020-04-17 18:34:46,243 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:46,244 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:34:46,268 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:46,268 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-17 18:34:46,269 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:46,324 INFO L619 ElimStorePlain]: treesize reduction 46, result has 53.1 percent of original size [2020-04-17 18:34:46,324 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:34:46,325 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:65, output treesize:52 [2020-04-17 18:34:46,495 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:34:46,496 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:34:46,519 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:46,521 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:46,523 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:46,529 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:34:46,535 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:46,554 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2020-04-17 18:34:46,559 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:46,576 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:46,578 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:46,579 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:46,584 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:34:46,590 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:46,606 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-17 18:34:46,607 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:46,619 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:46,622 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:46,624 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:46,629 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 56 [2020-04-17 18:34:46,630 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:46,653 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:46,653 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:34:46,654 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:260, output treesize:46 [2020-04-17 18:34:47,133 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:47,134 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 127 [2020-04-17 18:34:47,135 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:47,217 INFO L619 ElimStorePlain]: treesize reduction 64, result has 48.8 percent of original size [2020-04-17 18:34:47,218 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:34:47,219 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:34:47,219 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:61, output treesize:32 [2020-04-17 18:34:47,384 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:47,384 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 36 [2020-04-17 18:34:47,385 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:47,390 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:47,391 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:34:47,391 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:7 [2020-04-17 18:34:47,480 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:34:47,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:34:47,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 33 [2020-04-17 18:34:47,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600111713] [2020-04-17 18:34:47,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-04-17 18:34:47,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:34:47,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-04-17 18:34:47,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2020-04-17 18:34:47,482 INFO L87 Difference]: Start difference. First operand 356 states and 795 transitions. Second operand 35 states. [2020-04-17 18:34:48,701 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 55 [2020-04-17 18:34:49,081 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 57 [2020-04-17 18:34:51,031 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2020-04-17 18:34:51,620 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 60 [2020-04-17 18:34:51,793 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2020-04-17 18:34:52,284 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 62 [2020-04-17 18:34:52,786 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 60 [2020-04-17 18:34:52,965 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 53 [2020-04-17 18:34:53,408 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 62 [2020-04-17 18:34:53,909 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2020-04-17 18:34:54,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:34:54,541 INFO L93 Difference]: Finished difference Result 535 states and 1185 transitions. [2020-04-17 18:34:54,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-04-17 18:34:54,541 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 23 [2020-04-17 18:34:54,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:34:54,544 INFO L225 Difference]: With dead ends: 535 [2020-04-17 18:34:54,545 INFO L226 Difference]: Without dead ends: 535 [2020-04-17 18:34:54,546 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1265 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=668, Invalid=4444, Unknown=0, NotChecked=0, Total=5112 [2020-04-17 18:34:54,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-04-17 18:34:54,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 336. [2020-04-17 18:34:54,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-04-17 18:34:54,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 746 transitions. [2020-04-17 18:34:54,554 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 746 transitions. Word has length 23 [2020-04-17 18:34:54,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:34:54,554 INFO L479 AbstractCegarLoop]: Abstraction has 336 states and 746 transitions. [2020-04-17 18:34:54,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-04-17 18:34:54,554 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 746 transitions. [2020-04-17 18:34:54,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-17 18:34:54,555 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:34:54,555 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:34:54,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:34:54,759 INFO L427 AbstractCegarLoop]: === Iteration 17 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:34:54,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:34:54,760 INFO L82 PathProgramCache]: Analyzing trace with hash 378903552, now seen corresponding path program 11 times [2020-04-17 18:34:54,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:34:54,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635656126] [2020-04-17 18:34:54,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:34:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:34:55,179 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 34 [2020-04-17 18:34:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:34:55,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635656126] [2020-04-17 18:34:55,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632129169] [2020-04-17 18:34:55,860 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:34:55,925 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 18:34:55,925 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:34:55,927 WARN L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 92 conjunts are in the unsatisfiable core [2020-04-17 18:34:55,929 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:34:55,943 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2020-04-17 18:34:55,944 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:55,962 INFO L619 ElimStorePlain]: treesize reduction 12, result has 78.9 percent of original size [2020-04-17 18:34:55,966 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:55,969 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:34:55,969 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:55,979 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:55,980 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:34:55,980 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 18:34:56,374 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:56,375 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:34:56,403 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:56,403 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-17 18:34:56,404 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:56,458 INFO L619 ElimStorePlain]: treesize reduction 46, result has 53.1 percent of original size [2020-04-17 18:34:56,459 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:34:56,459 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:65, output treesize:52 [2020-04-17 18:34:56,623 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:34:56,624 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:34:56,632 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:56,633 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:56,634 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:56,646 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:34:56,648 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:56,654 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-17 18:34:56,655 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:56,668 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:56,668 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:56,670 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:56,681 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:34:56,683 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:56,689 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2020-04-17 18:34:56,690 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:56,694 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:56,695 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:56,695 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:34:56,697 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 56 [2020-04-17 18:34:56,698 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:56,715 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:56,716 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:34:56,717 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:260, output treesize:46 [2020-04-17 18:34:57,033 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:57,033 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 103 [2020-04-17 18:34:57,034 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:57,049 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:57,050 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:34:57,050 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:58, output treesize:39 [2020-04-17 18:34:57,190 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:57,190 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 47 [2020-04-17 18:34:57,191 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:34:57,198 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:34:57,198 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:34:57,199 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:51, output treesize:7 [2020-04-17 18:34:57,223 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:34:57,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:34:57,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 32 [2020-04-17 18:34:57,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435004738] [2020-04-17 18:34:57,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-04-17 18:34:57,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:34:57,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-04-17 18:34:57,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2020-04-17 18:34:57,225 INFO L87 Difference]: Start difference. First operand 336 states and 746 transitions. Second operand 34 states. [2020-04-17 18:34:58,397 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 56 [2020-04-17 18:34:58,761 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 61 [2020-04-17 18:35:00,405 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2020-04-17 18:35:01,087 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2020-04-17 18:35:01,366 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-04-17 18:35:01,732 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2020-04-17 18:35:02,222 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2020-04-17 18:35:02,561 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 68 [2020-04-17 18:35:03,240 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2020-04-17 18:35:03,574 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2020-04-17 18:35:04,023 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2020-04-17 18:35:04,264 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 59 [2020-04-17 18:35:05,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:35:05,696 INFO L93 Difference]: Finished difference Result 659 states and 1438 transitions. [2020-04-17 18:35:05,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-04-17 18:35:05,696 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 23 [2020-04-17 18:35:05,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:35:05,700 INFO L225 Difference]: With dead ends: 659 [2020-04-17 18:35:05,700 INFO L226 Difference]: Without dead ends: 659 [2020-04-17 18:35:05,702 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1542 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=801, Invalid=5051, Unknown=0, NotChecked=0, Total=5852 [2020-04-17 18:35:05,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2020-04-17 18:35:05,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 400. [2020-04-17 18:35:05,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-04-17 18:35:05,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 884 transitions. [2020-04-17 18:35:05,711 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 884 transitions. Word has length 23 [2020-04-17 18:35:05,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:35:05,711 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 884 transitions. [2020-04-17 18:35:05,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-04-17 18:35:05,712 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 884 transitions. [2020-04-17 18:35:05,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-17 18:35:05,713 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:35:05,713 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:35:05,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:35:05,917 INFO L427 AbstractCegarLoop]: === Iteration 18 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:35:05,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:35:05,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1115213342, now seen corresponding path program 12 times [2020-04-17 18:35:05,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:35:05,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549677833] [2020-04-17 18:35:05,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:35:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:35:07,016 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:35:07,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549677833] [2020-04-17 18:35:07,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472078813] [2020-04-17 18:35:07,016 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:35:07,085 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-04-17 18:35:07,085 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:35:07,087 WARN L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 95 conjunts are in the unsatisfiable core [2020-04-17 18:35:07,089 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:35:07,098 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2020-04-17 18:35:07,098 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:07,121 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-17 18:35:07,128 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:07,129 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:35:07,129 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:07,138 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:07,139 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:07,139 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 18:35:07,615 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:07,616 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:07,616 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:35:07,643 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:07,643 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-17 18:35:07,644 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:07,703 INFO L619 ElimStorePlain]: treesize reduction 46, result has 54.5 percent of original size [2020-04-17 18:35:07,704 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:07,704 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:68, output treesize:55 [2020-04-17 18:35:07,847 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:07,847 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:07,861 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:07,863 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:07,864 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:07,885 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:07,886 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-17 18:35:07,887 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:07,894 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:07,895 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:07,897 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:07,913 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:07,915 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2020-04-17 18:35:07,915 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:07,924 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:07,925 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:07,926 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:07,927 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 56 [2020-04-17 18:35:07,928 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:07,947 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:07,948 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:07,948 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:269, output treesize:49 [2020-04-17 18:35:08,201 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:08,202 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 127 [2020-04-17 18:35:08,203 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:08,263 INFO L619 ElimStorePlain]: treesize reduction 64, result has 48.8 percent of original size [2020-04-17 18:35:08,264 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:08,264 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:08,265 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:61, output treesize:32 [2020-04-17 18:35:08,386 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:08,386 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 36 [2020-04-17 18:35:08,387 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:08,392 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:08,392 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:35:08,392 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:7 [2020-04-17 18:35:08,465 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:35:08,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:35:08,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 33 [2020-04-17 18:35:08,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514395554] [2020-04-17 18:35:08,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-04-17 18:35:08,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:35:08,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-04-17 18:35:08,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2020-04-17 18:35:08,467 INFO L87 Difference]: Start difference. First operand 400 states and 884 transitions. Second operand 35 states. [2020-04-17 18:35:09,159 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 52 [2020-04-17 18:35:09,435 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 52 [2020-04-17 18:35:09,678 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 56 [2020-04-17 18:35:09,887 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 54 [2020-04-17 18:35:10,806 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2020-04-17 18:35:11,121 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2020-04-17 18:35:11,549 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2020-04-17 18:35:11,792 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2020-04-17 18:35:12,231 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2020-04-17 18:35:13,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:35:13,138 INFO L93 Difference]: Finished difference Result 503 states and 1101 transitions. [2020-04-17 18:35:13,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-04-17 18:35:13,138 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 23 [2020-04-17 18:35:13,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:35:13,142 INFO L225 Difference]: With dead ends: 503 [2020-04-17 18:35:13,142 INFO L226 Difference]: Without dead ends: 503 [2020-04-17 18:35:13,143 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 859 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=468, Invalid=3314, Unknown=0, NotChecked=0, Total=3782 [2020-04-17 18:35:13,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2020-04-17 18:35:13,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 400. [2020-04-17 18:35:13,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-04-17 18:35:13,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 884 transitions. [2020-04-17 18:35:13,151 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 884 transitions. Word has length 23 [2020-04-17 18:35:13,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:35:13,151 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 884 transitions. [2020-04-17 18:35:13,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-04-17 18:35:13,151 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 884 transitions. [2020-04-17 18:35:13,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-17 18:35:13,152 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:35:13,152 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:35:13,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:35:13,356 INFO L427 AbstractCegarLoop]: === Iteration 19 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:35:13,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:35:13,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1827682534, now seen corresponding path program 13 times [2020-04-17 18:35:13,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:35:13,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471866073] [2020-04-17 18:35:13,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:35:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:35:13,866 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 42 [2020-04-17 18:35:14,104 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 38 [2020-04-17 18:35:14,605 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:35:14,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471866073] [2020-04-17 18:35:14,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526297351] [2020-04-17 18:35:14,606 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:35:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:35:14,691 WARN L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 93 conjunts are in the unsatisfiable core [2020-04-17 18:35:14,693 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:35:14,706 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2020-04-17 18:35:14,706 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:14,729 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-17 18:35:14,733 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:14,733 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:35:14,734 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:14,743 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:14,744 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:14,744 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:52, output treesize:31 [2020-04-17 18:35:15,222 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:15,223 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:15,224 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:35:15,251 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:15,251 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-17 18:35:15,253 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:15,313 INFO L619 ElimStorePlain]: treesize reduction 46, result has 54.5 percent of original size [2020-04-17 18:35:15,314 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:15,314 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:68, output treesize:55 [2020-04-17 18:35:15,454 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:15,455 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:15,464 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:15,465 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:15,466 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:15,483 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:15,486 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2020-04-17 18:35:15,487 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:15,493 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:15,494 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:15,495 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:15,508 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:15,511 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-17 18:35:15,512 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:15,516 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:15,517 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:15,518 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:15,519 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 56 [2020-04-17 18:35:15,520 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:15,536 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:15,537 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:15,537 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:269, output treesize:49 [2020-04-17 18:35:15,771 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:15,772 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 127 [2020-04-17 18:35:15,773 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:15,832 INFO L619 ElimStorePlain]: treesize reduction 64, result has 48.8 percent of original size [2020-04-17 18:35:15,833 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:15,833 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:15,834 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:61, output treesize:32 [2020-04-17 18:35:15,959 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:15,960 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 36 [2020-04-17 18:35:15,960 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:15,965 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:15,966 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:35:15,966 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:7 [2020-04-17 18:35:15,991 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:35:15,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:35:15,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31 [2020-04-17 18:35:15,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034165386] [2020-04-17 18:35:15,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-04-17 18:35:15,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:35:15,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-04-17 18:35:15,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=949, Unknown=0, NotChecked=0, Total=1056 [2020-04-17 18:35:15,994 INFO L87 Difference]: Start difference. First operand 400 states and 884 transitions. Second operand 33 states. [2020-04-17 18:35:17,134 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2020-04-17 18:35:17,330 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2020-04-17 18:35:20,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:35:20,201 INFO L93 Difference]: Finished difference Result 470 states and 1032 transitions. [2020-04-17 18:35:20,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-04-17 18:35:20,202 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 23 [2020-04-17 18:35:20,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:35:20,205 INFO L225 Difference]: With dead ends: 470 [2020-04-17 18:35:20,205 INFO L226 Difference]: Without dead ends: 470 [2020-04-17 18:35:20,206 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=448, Invalid=2974, Unknown=0, NotChecked=0, Total=3422 [2020-04-17 18:35:20,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-04-17 18:35:20,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 364. [2020-04-17 18:35:20,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-04-17 18:35:20,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 809 transitions. [2020-04-17 18:35:20,214 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 809 transitions. Word has length 23 [2020-04-17 18:35:20,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:35:20,214 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 809 transitions. [2020-04-17 18:35:20,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-04-17 18:35:20,215 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 809 transitions. [2020-04-17 18:35:20,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 18:35:20,215 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:35:20,216 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:35:20,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:35:20,419 INFO L427 AbstractCegarLoop]: === Iteration 20 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:35:20,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:35:20,420 INFO L82 PathProgramCache]: Analyzing trace with hash 2090449835, now seen corresponding path program 14 times [2020-04-17 18:35:20,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:35:20,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703147224] [2020-04-17 18:35:20,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:35:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:35:20,921 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 42 [2020-04-17 18:35:21,801 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:35:21,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703147224] [2020-04-17 18:35:21,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218633048] [2020-04-17 18:35:21,802 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:35:21,874 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 18:35:21,874 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:35:21,876 WARN L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 98 conjunts are in the unsatisfiable core [2020-04-17 18:35:21,879 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:35:21,890 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2020-04-17 18:35:21,890 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 18:35:21,914 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-17 18:35:21,918 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:21,919 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:35:21,919 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:21,928 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:21,929 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:21,929 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 18:35:22,418 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:22,419 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:22,419 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:35:22,444 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:22,445 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-17 18:35:22,446 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:22,505 INFO L619 ElimStorePlain]: treesize reduction 46, result has 54.5 percent of original size [2020-04-17 18:35:22,505 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:22,506 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:68, output treesize:55 [2020-04-17 18:35:22,648 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:22,649 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:22,668 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:22,670 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:22,671 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:22,691 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:22,692 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2020-04-17 18:35:22,693 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:22,699 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:22,701 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:22,702 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:22,718 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:22,719 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-17 18:35:22,720 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:22,728 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:22,729 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:22,730 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:22,732 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 56 [2020-04-17 18:35:22,733 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:22,753 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:22,754 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:22,754 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:269, output treesize:49 [2020-04-17 18:35:22,969 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:22,970 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:22,970 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:23,011 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:23,011 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 120 [2020-04-17 18:35:23,013 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:23,073 INFO L619 ElimStorePlain]: treesize reduction 72, result has 44.6 percent of original size [2020-04-17 18:35:23,074 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:23,074 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:71, output treesize:49 [2020-04-17 18:35:23,148 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:23,149 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:23,181 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 50 [2020-04-17 18:35:23,181 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:23,207 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 48 [2020-04-17 18:35:23,207 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:23,220 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 48 [2020-04-17 18:35:23,221 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:23,279 INFO L619 ElimStorePlain]: treesize reduction 121, result has 27.5 percent of original size [2020-04-17 18:35:23,280 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:23,280 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:212, output treesize:46 [2020-04-17 18:35:23,437 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:23,437 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 51 [2020-04-17 18:35:23,438 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:23,444 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:23,445 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:35:23,445 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:58, output treesize:7 [2020-04-17 18:35:23,469 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:35:23,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:35:23,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34 [2020-04-17 18:35:23,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081328057] [2020-04-17 18:35:23,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-04-17 18:35:23,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:35:23,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-04-17 18:35:23,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1133, Unknown=0, NotChecked=0, Total=1260 [2020-04-17 18:35:23,471 INFO L87 Difference]: Start difference. First operand 364 states and 809 transitions. Second operand 36 states. [2020-04-17 18:35:24,091 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 52 [2020-04-17 18:35:24,421 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 52 [2020-04-17 18:35:24,654 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 56 [2020-04-17 18:35:24,891 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 60 [2020-04-17 18:35:26,011 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2020-04-17 18:35:26,447 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2020-04-17 18:35:27,209 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-04-17 18:35:27,486 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2020-04-17 18:35:27,963 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-04-17 18:35:29,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:35:29,207 INFO L93 Difference]: Finished difference Result 532 states and 1171 transitions. [2020-04-17 18:35:29,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-04-17 18:35:29,207 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 25 [2020-04-17 18:35:29,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:35:29,211 INFO L225 Difference]: With dead ends: 532 [2020-04-17 18:35:29,211 INFO L226 Difference]: Without dead ends: 532 [2020-04-17 18:35:29,212 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1198 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=578, Invalid=3712, Unknown=0, NotChecked=0, Total=4290 [2020-04-17 18:35:29,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-04-17 18:35:29,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 376. [2020-04-17 18:35:29,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-04-17 18:35:29,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 833 transitions. [2020-04-17 18:35:29,220 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 833 transitions. Word has length 25 [2020-04-17 18:35:29,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:35:29,220 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 833 transitions. [2020-04-17 18:35:29,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-04-17 18:35:29,220 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 833 transitions. [2020-04-17 18:35:29,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 18:35:29,221 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:35:29,221 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:35:29,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:35:29,425 INFO L427 AbstractCegarLoop]: === Iteration 21 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:35:29,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:35:29,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1978593398, now seen corresponding path program 1 times [2020-04-17 18:35:29,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:35:29,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545945111] [2020-04-17 18:35:29,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:35:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:35:29,870 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 35 [2020-04-17 18:35:30,151 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 28 [2020-04-17 18:35:30,549 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:35:30,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545945111] [2020-04-17 18:35:30,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865258780] [2020-04-17 18:35:30,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-04-17 18:35:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:35:30,635 INFO L264 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 78 conjunts are in the unsatisfiable core [2020-04-17 18:35:30,637 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:35:30,647 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2020-04-17 18:35:30,647 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 18:35:30,671 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-17 18:35:30,676 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:30,677 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:35:30,677 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:30,687 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:30,687 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:30,688 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 18:35:30,945 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:30,970 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:30,971 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-17 18:35:30,972 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:31,014 INFO L619 ElimStorePlain]: treesize reduction 46, result has 50.0 percent of original size [2020-04-17 18:35:31,015 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:31,015 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:59, output treesize:37 [2020-04-17 18:35:31,071 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:31,072 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:31,085 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:31,093 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 42 [2020-04-17 18:35:31,094 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:31,117 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:31,131 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 50 [2020-04-17 18:35:31,132 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:31,136 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2020-04-17 18:35:31,136 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:31,161 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:31,162 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:31,162 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:189, output treesize:29 [2020-04-17 18:35:31,355 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:31,355 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:31,369 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:35:31,372 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:31,375 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 50 [2020-04-17 18:35:31,376 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:31,389 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:35:31,391 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:31,394 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 42 [2020-04-17 18:35:31,394 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:31,398 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2020-04-17 18:35:31,398 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:31,408 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:31,409 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:31,409 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:189, output treesize:29 [2020-04-17 18:35:31,503 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:31,522 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:35:31,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:35:31,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14] total 31 [2020-04-17 18:35:31,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463138509] [2020-04-17 18:35:31,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-04-17 18:35:31,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:35:31,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-04-17 18:35:31,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2020-04-17 18:35:31,524 INFO L87 Difference]: Start difference. First operand 376 states and 833 transitions. Second operand 32 states. [2020-04-17 18:35:32,104 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 45 [2020-04-17 18:35:32,359 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 47 [2020-04-17 18:35:32,506 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 50 [2020-04-17 18:35:32,878 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 55 [2020-04-17 18:35:33,162 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 60 [2020-04-17 18:35:33,361 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 50 [2020-04-17 18:35:33,692 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2020-04-17 18:35:33,861 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 47 [2020-04-17 18:35:34,170 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 57 [2020-04-17 18:35:35,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:35:35,469 INFO L93 Difference]: Finished difference Result 469 states and 1021 transitions. [2020-04-17 18:35:35,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-04-17 18:35:35,470 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 25 [2020-04-17 18:35:35,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:35:35,473 INFO L225 Difference]: With dead ends: 469 [2020-04-17 18:35:35,473 INFO L226 Difference]: Without dead ends: 452 [2020-04-17 18:35:35,474 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=436, Invalid=2216, Unknown=0, NotChecked=0, Total=2652 [2020-04-17 18:35:35,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-04-17 18:35:35,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 435. [2020-04-17 18:35:35,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-04-17 18:35:35,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 959 transitions. [2020-04-17 18:35:35,482 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 959 transitions. Word has length 25 [2020-04-17 18:35:35,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:35:35,482 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 959 transitions. [2020-04-17 18:35:35,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-04-17 18:35:35,482 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 959 transitions. [2020-04-17 18:35:35,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 18:35:35,483 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:35:35,483 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:35:35,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:35:35,687 INFO L427 AbstractCegarLoop]: === Iteration 22 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:35:35,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:35:35,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1352666678, now seen corresponding path program 2 times [2020-04-17 18:35:35,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:35:35,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066133774] [2020-04-17 18:35:35,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:35:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:35:36,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:35:36,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066133774] [2020-04-17 18:35:36,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059800093] [2020-04-17 18:35:36,681 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:35:36,757 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 18:35:36,758 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:35:36,760 INFO L264 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 78 conjunts are in the unsatisfiable core [2020-04-17 18:35:36,762 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:35:36,774 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2020-04-17 18:35:36,774 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 18:35:36,800 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-17 18:35:36,803 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:36,804 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:35:36,804 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:36,814 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:36,814 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:36,814 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 18:35:37,063 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:37,085 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:37,085 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 86 [2020-04-17 18:35:37,086 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:37,126 INFO L619 ElimStorePlain]: treesize reduction 46, result has 50.0 percent of original size [2020-04-17 18:35:37,127 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:37,127 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:59, output treesize:37 [2020-04-17 18:35:37,214 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:37,214 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:37,227 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:37,233 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 50 [2020-04-17 18:35:37,234 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:37,241 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:37,246 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2020-04-17 18:35:37,247 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:37,251 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 42 [2020-04-17 18:35:37,251 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:37,259 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:37,260 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:37,260 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:189, output treesize:29 [2020-04-17 18:35:37,402 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:37,402 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:37,417 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:35:37,420 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:37,423 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 50 [2020-04-17 18:35:37,424 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:37,436 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:35:37,438 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:37,441 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2020-04-17 18:35:37,441 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:37,447 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 42 [2020-04-17 18:35:37,448 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:37,481 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:37,481 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:37,481 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:189, output treesize:29 [2020-04-17 18:35:37,575 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:37,583 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:35:37,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:35:37,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 31 [2020-04-17 18:35:37,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164554149] [2020-04-17 18:35:37,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-04-17 18:35:37,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:35:37,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-04-17 18:35:37,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2020-04-17 18:35:37,584 INFO L87 Difference]: Start difference. First operand 435 states and 959 transitions. Second operand 32 states. [2020-04-17 18:35:39,764 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 52 [2020-04-17 18:35:40,248 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2020-04-17 18:35:41,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:35:41,827 INFO L93 Difference]: Finished difference Result 548 states and 1192 transitions. [2020-04-17 18:35:41,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-04-17 18:35:41,827 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 25 [2020-04-17 18:35:41,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:35:41,830 INFO L225 Difference]: With dead ends: 548 [2020-04-17 18:35:41,831 INFO L226 Difference]: Without dead ends: 531 [2020-04-17 18:35:41,832 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=529, Invalid=2663, Unknown=0, NotChecked=0, Total=3192 [2020-04-17 18:35:41,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-04-17 18:35:41,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 472. [2020-04-17 18:35:41,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-04-17 18:35:41,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1038 transitions. [2020-04-17 18:35:41,840 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1038 transitions. Word has length 25 [2020-04-17 18:35:41,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:35:41,840 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 1038 transitions. [2020-04-17 18:35:41,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-04-17 18:35:41,841 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1038 transitions. [2020-04-17 18:35:41,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 18:35:41,842 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:35:41,842 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:35:42,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:35:42,046 INFO L427 AbstractCegarLoop]: === Iteration 23 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:35:42,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:35:42,046 INFO L82 PathProgramCache]: Analyzing trace with hash 638994318, now seen corresponding path program 3 times [2020-04-17 18:35:42,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:35:42,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896469964] [2020-04-17 18:35:42,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:35:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:35:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:35:42,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896469964] [2020-04-17 18:35:42,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469084388] [2020-04-17 18:35:42,743 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:35:42,816 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-17 18:35:42,816 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:35:42,819 INFO L264 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 76 conjunts are in the unsatisfiable core [2020-04-17 18:35:42,821 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:35:42,828 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2020-04-17 18:35:42,829 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 18:35:42,853 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-17 18:35:42,858 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:42,859 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:35:42,859 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:42,881 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:42,882 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:42,882 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 18:35:43,082 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:43,106 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:43,106 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-17 18:35:43,107 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:43,150 INFO L619 ElimStorePlain]: treesize reduction 46, result has 50.0 percent of original size [2020-04-17 18:35:43,150 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:43,151 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:59, output treesize:37 [2020-04-17 18:35:43,198 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:43,199 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:43,208 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:43,215 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 50 [2020-04-17 18:35:43,216 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:43,224 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:43,230 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2020-04-17 18:35:43,231 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:43,235 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 42 [2020-04-17 18:35:43,235 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:43,246 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:43,246 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:43,247 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:189, output treesize:29 [2020-04-17 18:35:43,434 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:43,434 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:43,449 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:35:43,451 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:43,454 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2020-04-17 18:35:43,455 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:43,466 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:35:43,468 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:43,471 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 50 [2020-04-17 18:35:43,471 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:43,475 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 42 [2020-04-17 18:35:43,476 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:43,486 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:43,487 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:43,487 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:189, output treesize:29 [2020-04-17 18:35:43,574 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:43,581 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:35:43,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:35:43,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 29 [2020-04-17 18:35:43,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283752779] [2020-04-17 18:35:43,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-04-17 18:35:43,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:35:43,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-04-17 18:35:43,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2020-04-17 18:35:43,583 INFO L87 Difference]: Start difference. First operand 472 states and 1038 transitions. Second operand 30 states. [2020-04-17 18:35:46,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:35:46,876 INFO L93 Difference]: Finished difference Result 548 states and 1192 transitions. [2020-04-17 18:35:46,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-04-17 18:35:46,876 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 25 [2020-04-17 18:35:46,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:35:46,879 INFO L225 Difference]: With dead ends: 548 [2020-04-17 18:35:46,879 INFO L226 Difference]: Without dead ends: 531 [2020-04-17 18:35:46,881 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=409, Invalid=2347, Unknown=0, NotChecked=0, Total=2756 [2020-04-17 18:35:46,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-04-17 18:35:46,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 472. [2020-04-17 18:35:46,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-04-17 18:35:46,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1038 transitions. [2020-04-17 18:35:46,888 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1038 transitions. Word has length 25 [2020-04-17 18:35:46,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:35:46,888 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 1038 transitions. [2020-04-17 18:35:46,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-04-17 18:35:46,888 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1038 transitions. [2020-04-17 18:35:46,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 18:35:46,889 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:35:46,889 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:35:47,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:35:47,093 INFO L427 AbstractCegarLoop]: === Iteration 24 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:35:47,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:35:47,093 INFO L82 PathProgramCache]: Analyzing trace with hash -631310293, now seen corresponding path program 15 times [2020-04-17 18:35:47,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:35:47,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722599089] [2020-04-17 18:35:47,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:35:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:35:47,511 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 39 [2020-04-17 18:35:47,629 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-04-17 18:35:47,762 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 40 [2020-04-17 18:35:48,512 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:35:48,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722599089] [2020-04-17 18:35:48,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542066007] [2020-04-17 18:35:48,513 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:35:48,587 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-17 18:35:48,588 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:35:48,590 WARN L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 99 conjunts are in the unsatisfiable core [2020-04-17 18:35:48,591 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:35:48,599 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2020-04-17 18:35:48,600 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:48,623 INFO L619 ElimStorePlain]: treesize reduction 13, result has 78.7 percent of original size [2020-04-17 18:35:48,628 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:48,628 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:35:48,629 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:48,638 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:48,639 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:48,639 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:55, output treesize:34 [2020-04-17 18:35:49,031 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:49,032 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:35:49,058 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:49,058 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-17 18:35:49,059 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:49,117 INFO L619 ElimStorePlain]: treesize reduction 46, result has 54.5 percent of original size [2020-04-17 18:35:49,118 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:49,118 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:68, output treesize:55 [2020-04-17 18:35:49,252 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:49,253 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:49,261 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:49,262 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:49,264 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:49,278 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:35:49,280 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:49,287 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2020-04-17 18:35:49,287 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:49,295 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:49,296 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:49,297 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:49,309 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:35:49,311 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:49,317 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 56 [2020-04-17 18:35:49,318 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:49,323 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:49,324 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:49,325 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:49,326 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-17 18:35:49,327 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:49,346 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:49,347 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:49,347 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:269, output treesize:49 [2020-04-17 18:35:49,546 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:49,547 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:49,548 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:35:49,587 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:49,587 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 55 treesize of output 120 [2020-04-17 18:35:49,588 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:49,646 INFO L619 ElimStorePlain]: treesize reduction 72, result has 44.6 percent of original size [2020-04-17 18:35:49,647 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:49,647 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:71, output treesize:49 [2020-04-17 18:35:49,725 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:49,726 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:35:49,751 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 50 [2020-04-17 18:35:49,752 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:49,779 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 48 [2020-04-17 18:35:49,779 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:49,789 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 48 [2020-04-17 18:35:49,789 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:49,853 INFO L619 ElimStorePlain]: treesize reduction 121, result has 27.5 percent of original size [2020-04-17 18:35:49,854 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-04-17 18:35:49,854 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:212, output treesize:46 [2020-04-17 18:35:50,153 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:50,154 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 51 [2020-04-17 18:35:50,154 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:35:50,163 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:35:50,163 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:35:50,163 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:61, output treesize:7 [2020-04-17 18:35:50,242 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:35:50,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:35:50,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17] total 37 [2020-04-17 18:35:50,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925868201] [2020-04-17 18:35:50,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-04-17 18:35:50,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:35:50,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-04-17 18:35:50,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1361, Unknown=0, NotChecked=0, Total=1482 [2020-04-17 18:35:50,244 INFO L87 Difference]: Start difference. First operand 472 states and 1038 transitions. Second operand 39 states. [2020-04-17 18:35:51,375 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2020-04-17 18:35:51,771 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2020-04-17 18:35:52,168 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2020-04-17 18:35:52,695 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2020-04-17 18:35:53,270 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 71 [2020-04-17 18:35:53,492 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 66 [2020-04-17 18:35:53,881 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2020-04-17 18:35:54,421 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 77 [2020-04-17 18:35:54,623 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 61 [2020-04-17 18:35:54,835 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2020-04-17 18:35:55,272 WARN L192 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 80 [2020-04-17 18:35:55,896 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 81 [2020-04-17 18:35:56,129 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2020-04-17 18:35:56,607 WARN L192 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 84 [2020-04-17 18:35:57,064 WARN L192 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 75 [2020-04-17 18:35:57,334 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 71 [2020-04-17 18:35:57,624 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-04-17 18:35:57,915 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2020-04-17 18:35:58,257 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2020-04-17 18:35:58,539 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 65 [2020-04-17 18:35:59,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:35:59,265 INFO L93 Difference]: Finished difference Result 721 states and 1595 transitions. [2020-04-17 18:35:59,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-04-17 18:35:59,265 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 25 [2020-04-17 18:35:59,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:35:59,269 INFO L225 Difference]: With dead ends: 721 [2020-04-17 18:35:59,269 INFO L226 Difference]: Without dead ends: 721 [2020-04-17 18:35:59,270 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1162 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=680, Invalid=4290, Unknown=0, NotChecked=0, Total=4970 [2020-04-17 18:35:59,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2020-04-17 18:35:59,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 478. [2020-04-17 18:35:59,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-04-17 18:35:59,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 1051 transitions. [2020-04-17 18:35:59,278 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 1051 transitions. Word has length 25 [2020-04-17 18:35:59,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:35:59,278 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 1051 transitions. [2020-04-17 18:35:59,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-04-17 18:35:59,278 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1051 transitions. [2020-04-17 18:35:59,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 18:35:59,279 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:35:59,279 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:35:59,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:35:59,485 INFO L427 AbstractCegarLoop]: === Iteration 25 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:35:59,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:35:59,485 INFO L82 PathProgramCache]: Analyzing trace with hash 927642954, now seen corresponding path program 4 times [2020-04-17 18:35:59,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:35:59,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278980101] [2020-04-17 18:35:59,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:35:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:36:00,236 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:36:00,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278980101] [2020-04-17 18:36:00,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844578722] [2020-04-17 18:36:00,237 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:36:00,302 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-17 18:36:00,303 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:36:00,308 INFO L264 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 84 conjunts are in the unsatisfiable core [2020-04-17 18:36:00,309 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:36:00,328 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2020-04-17 18:36:00,328 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:00,350 INFO L619 ElimStorePlain]: treesize reduction 13, result has 76.4 percent of original size [2020-04-17 18:36:00,361 INFO L343 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2020-04-17 18:36:00,362 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:36:00,362 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:00,375 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:00,376 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:00,376 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:49, output treesize:28 [2020-04-17 18:36:00,670 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:00,702 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:00,703 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-17 18:36:00,704 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:00,744 INFO L619 ElimStorePlain]: treesize reduction 46, result has 48.3 percent of original size [2020-04-17 18:36:00,745 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:00,746 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:56, output treesize:34 [2020-04-17 18:36:00,936 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:00,936 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:00,946 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:00,962 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:00,963 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2020-04-17 18:36:00,964 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:00,970 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:00,983 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:00,984 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 52 [2020-04-17 18:36:00,985 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:00,999 INFO L343 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2020-04-17 18:36:01,000 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 43 [2020-04-17 18:36:01,001 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:01,012 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:01,013 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:01,013 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:206, output treesize:28 [2020-04-17 18:36:01,238 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:01,238 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:01,246 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:01,253 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:01,256 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 52 [2020-04-17 18:36:01,256 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:01,261 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:01,269 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:01,271 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 43 [2020-04-17 18:36:01,272 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:01,275 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:01,276 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 44 [2020-04-17 18:36:01,276 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:01,285 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:01,286 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:01,286 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:186, output treesize:28 [2020-04-17 18:36:01,404 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:01,412 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:36:01,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:36:01,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 29 [2020-04-17 18:36:01,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556266889] [2020-04-17 18:36:01,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-04-17 18:36:01,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:36:01,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-04-17 18:36:01,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=798, Unknown=0, NotChecked=0, Total=870 [2020-04-17 18:36:01,414 INFO L87 Difference]: Start difference. First operand 478 states and 1051 transitions. Second operand 30 states. [2020-04-17 18:36:03,737 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 54 [2020-04-17 18:36:04,384 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 52 [2020-04-17 18:36:04,585 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 49 [2020-04-17 18:36:06,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:36:06,153 INFO L93 Difference]: Finished difference Result 520 states and 1132 transitions. [2020-04-17 18:36:06,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-04-17 18:36:06,154 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 25 [2020-04-17 18:36:06,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:36:06,157 INFO L225 Difference]: With dead ends: 520 [2020-04-17 18:36:06,158 INFO L226 Difference]: Without dead ends: 503 [2020-04-17 18:36:06,158 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=475, Invalid=2717, Unknown=0, NotChecked=0, Total=3192 [2020-04-17 18:36:06,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2020-04-17 18:36:06,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 450. [2020-04-17 18:36:06,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-04-17 18:36:06,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 990 transitions. [2020-04-17 18:36:06,166 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 990 transitions. Word has length 25 [2020-04-17 18:36:06,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:36:06,166 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 990 transitions. [2020-04-17 18:36:06,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-04-17 18:36:06,166 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 990 transitions. [2020-04-17 18:36:06,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 18:36:06,167 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:36:06,167 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:36:06,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:36:06,371 INFO L427 AbstractCegarLoop]: === Iteration 26 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:36:06,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:36:06,371 INFO L82 PathProgramCache]: Analyzing trace with hash -709771567, now seen corresponding path program 16 times [2020-04-17 18:36:06,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:36:06,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370800025] [2020-04-17 18:36:06,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:36:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:36:07,120 WARN L192 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 41 [2020-04-17 18:36:07,277 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 33 [2020-04-17 18:36:08,108 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:36:08,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370800025] [2020-04-17 18:36:08,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823636087] [2020-04-17 18:36:08,109 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:36:08,169 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-17 18:36:08,169 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:36:08,171 WARN L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 104 conjunts are in the unsatisfiable core [2020-04-17 18:36:08,172 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:36:08,182 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2020-04-17 18:36:08,183 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 18:36:08,207 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-17 18:36:08,210 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:08,211 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:36:08,211 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:08,221 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:08,221 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:08,222 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:52, output treesize:31 [2020-04-17 18:36:08,667 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:08,668 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:08,668 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:36:08,695 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:08,695 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-17 18:36:08,696 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:08,753 INFO L619 ElimStorePlain]: treesize reduction 46, result has 54.5 percent of original size [2020-04-17 18:36:08,754 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:08,754 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:68, output treesize:55 [2020-04-17 18:36:08,894 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:08,895 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:08,907 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:08,909 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:08,911 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:08,934 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:08,938 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 56 [2020-04-17 18:36:08,939 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:08,947 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:08,948 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:08,949 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:08,963 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:08,966 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-17 18:36:08,967 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:08,972 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:08,973 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:08,974 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:08,975 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2020-04-17 18:36:08,975 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:08,995 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:08,995 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:08,996 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:269, output treesize:49 [2020-04-17 18:36:09,217 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:09,218 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:09,219 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:09,267 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:09,267 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 120 [2020-04-17 18:36:09,268 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:09,326 INFO L619 ElimStorePlain]: treesize reduction 72, result has 44.6 percent of original size [2020-04-17 18:36:09,327 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:09,327 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:71, output treesize:49 [2020-04-17 18:36:09,402 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:09,402 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:09,431 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 48 [2020-04-17 18:36:09,432 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:09,461 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 48 [2020-04-17 18:36:09,462 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:09,474 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 50 [2020-04-17 18:36:09,474 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:09,534 INFO L619 ElimStorePlain]: treesize reduction 121, result has 27.5 percent of original size [2020-04-17 18:36:09,535 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:09,535 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:212, output treesize:46 [2020-04-17 18:36:09,689 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:09,690 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 51 [2020-04-17 18:36:09,690 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:09,697 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:09,697 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:36:09,698 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:58, output treesize:7 [2020-04-17 18:36:09,780 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:36:09,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:36:09,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 36 [2020-04-17 18:36:09,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959008889] [2020-04-17 18:36:09,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-04-17 18:36:09,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:36:09,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-04-17 18:36:09,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2020-04-17 18:36:09,782 INFO L87 Difference]: Start difference. First operand 450 states and 990 transitions. Second operand 38 states. [2020-04-17 18:36:10,609 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2020-04-17 18:36:10,983 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 54 [2020-04-17 18:36:11,281 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 58 [2020-04-17 18:36:11,517 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 62 [2020-04-17 18:36:12,639 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2020-04-17 18:36:13,133 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2020-04-17 18:36:13,895 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-04-17 18:36:14,157 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-04-17 18:36:14,659 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-04-17 18:36:15,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:36:15,874 INFO L93 Difference]: Finished difference Result 563 states and 1237 transitions. [2020-04-17 18:36:15,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-04-17 18:36:15,874 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 25 [2020-04-17 18:36:15,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:36:15,878 INFO L225 Difference]: With dead ends: 563 [2020-04-17 18:36:15,878 INFO L226 Difference]: Without dead ends: 563 [2020-04-17 18:36:15,879 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=605, Invalid=4087, Unknown=0, NotChecked=0, Total=4692 [2020-04-17 18:36:15,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-04-17 18:36:15,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 407. [2020-04-17 18:36:15,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-04-17 18:36:15,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 899 transitions. [2020-04-17 18:36:15,885 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 899 transitions. Word has length 25 [2020-04-17 18:36:15,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:36:15,885 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 899 transitions. [2020-04-17 18:36:15,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-04-17 18:36:15,885 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 899 transitions. [2020-04-17 18:36:15,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 18:36:15,886 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:36:15,886 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:36:16,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:36:16,088 INFO L427 AbstractCegarLoop]: === Iteration 27 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:36:16,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:36:16,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1324684501, now seen corresponding path program 17 times [2020-04-17 18:36:16,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:36:16,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404666975] [2020-04-17 18:36:16,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:36:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:36:16,593 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 42 [2020-04-17 18:36:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:36:17,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404666975] [2020-04-17 18:36:17,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349435980] [2020-04-17 18:36:17,465 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:36:17,529 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 18:36:17,529 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:36:17,531 WARN L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 98 conjunts are in the unsatisfiable core [2020-04-17 18:36:17,532 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:36:17,546 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2020-04-17 18:36:17,547 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 18:36:17,573 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-17 18:36:17,576 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:17,576 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:36:17,577 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:17,587 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:17,588 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:17,588 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 18:36:18,039 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:18,040 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:18,041 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:36:18,068 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:18,068 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-17 18:36:18,070 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:18,128 INFO L619 ElimStorePlain]: treesize reduction 46, result has 54.5 percent of original size [2020-04-17 18:36:18,129 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:18,129 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:68, output treesize:55 [2020-04-17 18:36:18,289 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:18,289 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:18,297 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:18,298 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:18,299 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:18,317 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:18,318 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-17 18:36:18,319 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:18,326 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:18,327 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:18,337 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:18,353 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:18,354 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2020-04-17 18:36:18,354 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:18,360 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:18,361 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:18,362 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:18,363 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 56 [2020-04-17 18:36:18,364 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:18,396 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:18,397 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:18,397 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:269, output treesize:49 [2020-04-17 18:36:18,593 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:18,594 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:18,595 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:18,633 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:18,634 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 120 [2020-04-17 18:36:18,635 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:18,692 INFO L619 ElimStorePlain]: treesize reduction 72, result has 44.6 percent of original size [2020-04-17 18:36:18,693 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:18,693 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:71, output treesize:49 [2020-04-17 18:36:18,768 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:18,769 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:18,823 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 50 [2020-04-17 18:36:18,824 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:18,848 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 48 [2020-04-17 18:36:18,849 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:18,859 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 48 [2020-04-17 18:36:18,860 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:18,916 INFO L619 ElimStorePlain]: treesize reduction 121, result has 27.5 percent of original size [2020-04-17 18:36:18,917 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:18,917 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:212, output treesize:46 [2020-04-17 18:36:19,087 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:19,088 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 51 [2020-04-17 18:36:19,088 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:19,095 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:19,096 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:36:19,096 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:58, output treesize:7 [2020-04-17 18:36:19,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:36:19,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:36:19,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34 [2020-04-17 18:36:19,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687552536] [2020-04-17 18:36:19,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-04-17 18:36:19,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:36:19,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-04-17 18:36:19,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1130, Unknown=0, NotChecked=0, Total=1260 [2020-04-17 18:36:19,120 INFO L87 Difference]: Start difference. First operand 407 states and 899 transitions. Second operand 36 states. [2020-04-17 18:36:20,292 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2020-04-17 18:36:20,504 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2020-04-17 18:36:21,365 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2020-04-17 18:36:21,621 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2020-04-17 18:36:22,078 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2020-04-17 18:36:22,822 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-04-17 18:36:23,070 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2020-04-17 18:36:23,523 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-04-17 18:36:24,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:36:24,680 INFO L93 Difference]: Finished difference Result 501 states and 1106 transitions. [2020-04-17 18:36:24,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-04-17 18:36:24,681 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 25 [2020-04-17 18:36:24,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:36:24,690 INFO L225 Difference]: With dead ends: 501 [2020-04-17 18:36:24,690 INFO L226 Difference]: Without dead ends: 501 [2020-04-17 18:36:24,691 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1249 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=581, Invalid=3709, Unknown=0, NotChecked=0, Total=4290 [2020-04-17 18:36:24,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-04-17 18:36:24,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 397. [2020-04-17 18:36:24,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-04-17 18:36:24,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 877 transitions. [2020-04-17 18:36:24,698 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 877 transitions. Word has length 25 [2020-04-17 18:36:24,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:36:24,698 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 877 transitions. [2020-04-17 18:36:24,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-04-17 18:36:24,698 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 877 transitions. [2020-04-17 18:36:24,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 18:36:24,699 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:36:24,699 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:36:24,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:36:24,903 INFO L427 AbstractCegarLoop]: === Iteration 28 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:36:24,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:36:24,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1550608564, now seen corresponding path program 5 times [2020-04-17 18:36:24,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:36:24,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223156870] [2020-04-17 18:36:24,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:36:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:36:25,380 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 35 [2020-04-17 18:36:25,657 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 28 [2020-04-17 18:36:26,048 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:36:26,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223156870] [2020-04-17 18:36:26,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122762855] [2020-04-17 18:36:26,049 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:36:26,136 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 18:36:26,136 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:36:26,138 WARN L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 91 conjunts are in the unsatisfiable core [2020-04-17 18:36:26,139 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:36:26,149 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2020-04-17 18:36:26,150 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 18:36:26,177 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-17 18:36:26,181 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:26,182 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:36:26,182 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:26,194 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:26,195 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:26,195 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 18:36:26,491 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:26,516 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:26,516 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-17 18:36:26,517 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:26,565 INFO L619 ElimStorePlain]: treesize reduction 46, result has 51.6 percent of original size [2020-04-17 18:36:26,565 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:26,566 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:62, output treesize:46 [2020-04-17 18:36:26,674 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:26,674 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:26,687 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:26,700 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 52 [2020-04-17 18:36:26,701 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:26,712 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:26,722 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2020-04-17 18:36:26,723 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:26,728 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 60 [2020-04-17 18:36:26,729 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:26,740 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:26,740 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:26,740 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:210, output treesize:36 [2020-04-17 18:36:26,857 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:26,985 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:26,986 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:27,017 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:36:27,019 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:27,020 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 52 [2020-04-17 18:36:27,021 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:27,044 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:36:27,046 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:27,047 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2020-04-17 18:36:27,048 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:27,053 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 60 [2020-04-17 18:36:27,053 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:27,065 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:27,065 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:27,065 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:210, output treesize:36 [2020-04-17 18:36:27,164 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:27,179 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2020-04-17 18:36:27,180 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:27,187 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 17 [2020-04-17 18:36:27,187 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:27,190 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:27,191 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:36:27,191 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:96, output treesize:3 [2020-04-17 18:36:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:36:27,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:36:27,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 33 [2020-04-17 18:36:27,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863909606] [2020-04-17 18:36:27,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-04-17 18:36:27,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:36:27,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-04-17 18:36:27,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2020-04-17 18:36:27,198 INFO L87 Difference]: Start difference. First operand 397 states and 877 transitions. Second operand 34 states. [2020-04-17 18:36:28,202 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 54 [2020-04-17 18:36:28,480 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2020-04-17 18:36:28,649 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 49 [2020-04-17 18:36:28,902 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 53 [2020-04-17 18:36:29,115 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 59 [2020-04-17 18:36:29,285 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 52 [2020-04-17 18:36:29,518 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 63 [2020-04-17 18:36:29,792 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 61 [2020-04-17 18:36:31,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:36:31,376 INFO L93 Difference]: Finished difference Result 438 states and 956 transitions. [2020-04-17 18:36:31,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-04-17 18:36:31,377 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 25 [2020-04-17 18:36:31,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:36:31,379 INFO L225 Difference]: With dead ends: 438 [2020-04-17 18:36:31,379 INFO L226 Difference]: Without dead ends: 421 [2020-04-17 18:36:31,380 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=457, Invalid=2405, Unknown=0, NotChecked=0, Total=2862 [2020-04-17 18:36:31,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-04-17 18:36:31,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 345. [2020-04-17 18:36:31,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-04-17 18:36:31,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 768 transitions. [2020-04-17 18:36:31,385 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 768 transitions. Word has length 25 [2020-04-17 18:36:31,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:36:31,385 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 768 transitions. [2020-04-17 18:36:31,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-04-17 18:36:31,385 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 768 transitions. [2020-04-17 18:36:31,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-17 18:36:31,385 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:36:31,385 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:36:31,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:36:31,587 INFO L427 AbstractCegarLoop]: === Iteration 29 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:36:31,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:36:31,587 INFO L82 PathProgramCache]: Analyzing trace with hash -2088272730, now seen corresponding path program 18 times [2020-04-17 18:36:31,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:36:31,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613515957] [2020-04-17 18:36:31,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:36:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:36:32,084 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 40 [2020-04-17 18:36:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:36:33,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613515957] [2020-04-17 18:36:33,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150301901] [2020-04-17 18:36:33,255 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:36:33,344 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-04-17 18:36:33,344 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:36:33,346 WARN L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 108 conjunts are in the unsatisfiable core [2020-04-17 18:36:33,347 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:36:33,352 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:33,361 INFO L343 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2020-04-17 18:36:33,361 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:36:33,361 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:33,369 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:33,369 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:33,369 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:27 [2020-04-17 18:36:33,579 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:33,580 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:36:33,605 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:33,605 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 76 [2020-04-17 18:36:33,606 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:33,655 INFO L619 ElimStorePlain]: treesize reduction 46, result has 48.9 percent of original size [2020-04-17 18:36:33,656 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:36:33,656 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:55, output treesize:44 [2020-04-17 18:36:33,766 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:33,767 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:33,774 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:33,775 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:33,777 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:33,789 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:33,790 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 46 [2020-04-17 18:36:33,791 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:33,796 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:33,798 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:33,799 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:33,809 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:33,810 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 54 [2020-04-17 18:36:33,811 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:33,814 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:33,815 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:33,816 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:33,817 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 45 [2020-04-17 18:36:33,818 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:33,833 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:33,833 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:36:33,833 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:236, output treesize:38 [2020-04-17 18:36:33,974 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:33,975 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:34,013 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:34,013 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 107 [2020-04-17 18:36:34,014 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:34,016 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:34,016 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:34,016 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:34,017 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:34,021 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:34,025 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:34,027 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:34,030 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:34,031 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:34,034 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:34,041 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:34,042 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:34,042 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:34,043 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:34,045 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:34,046 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:34,047 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:34,051 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:34,053 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:34,056 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 18:36:34,154 INFO L619 ElimStorePlain]: treesize reduction 640, result has 10.0 percent of original size [2020-04-17 18:36:34,155 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:36:34,155 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:75, output treesize:53 [2020-04-17 18:36:34,251 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:34,252 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:34,276 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:34,279 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 46 [2020-04-17 18:36:34,280 INFO L539 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:34,301 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:34,304 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 55 [2020-04-17 18:36:34,305 INFO L539 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:34,313 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 47 [2020-04-17 18:36:34,314 INFO L539 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:34,365 INFO L619 ElimStorePlain]: treesize reduction 121, result has 27.5 percent of original size [2020-04-17 18:36:34,366 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:34,366 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:231, output treesize:46 [2020-04-17 18:36:34,642 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:34,643 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 123 [2020-04-17 18:36:34,644 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:34,709 INFO L619 ElimStorePlain]: treesize reduction 64, result has 50.8 percent of original size [2020-04-17 18:36:34,710 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:34,711 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:36:34,711 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:62, output treesize:23 [2020-04-17 18:36:34,811 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:34,812 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 35 [2020-04-17 18:36:34,812 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:34,816 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:34,816 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:36:34,816 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:9 [2020-04-17 18:36:34,894 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:36:34,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:36:34,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 35 [2020-04-17 18:36:34,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736372253] [2020-04-17 18:36:34,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-04-17 18:36:34,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:36:34,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-04-17 18:36:34,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1209, Unknown=0, NotChecked=0, Total=1332 [2020-04-17 18:36:34,895 INFO L87 Difference]: Start difference. First operand 345 states and 768 transitions. Second operand 37 states. [2020-04-17 18:36:40,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:36:40,055 INFO L93 Difference]: Finished difference Result 519 states and 1135 transitions. [2020-04-17 18:36:40,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-04-17 18:36:40,055 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 30 [2020-04-17 18:36:40,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:36:40,060 INFO L225 Difference]: With dead ends: 519 [2020-04-17 18:36:40,060 INFO L226 Difference]: Without dead ends: 519 [2020-04-17 18:36:40,061 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 8 SyntacticMatches, 11 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1555 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=557, Invalid=4845, Unknown=0, NotChecked=0, Total=5402 [2020-04-17 18:36:40,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-04-17 18:36:40,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 456. [2020-04-17 18:36:40,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-04-17 18:36:40,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1011 transitions. [2020-04-17 18:36:40,068 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1011 transitions. Word has length 30 [2020-04-17 18:36:40,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:36:40,068 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 1011 transitions. [2020-04-17 18:36:40,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-04-17 18:36:40,068 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1011 transitions. [2020-04-17 18:36:40,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-17 18:36:40,069 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:36:40,069 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:36:40,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:36:40,270 INFO L427 AbstractCegarLoop]: === Iteration 30 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:36:40,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:36:40,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1686493757, now seen corresponding path program 6 times [2020-04-17 18:36:40,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:36:40,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531799108] [2020-04-17 18:36:40,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:36:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:36:40,851 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 31 [2020-04-17 18:36:41,473 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:36:41,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531799108] [2020-04-17 18:36:41,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446476235] [2020-04-17 18:36:41,474 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:36:41,554 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-04-17 18:36:41,554 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:36:41,556 WARN L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 116 conjunts are in the unsatisfiable core [2020-04-17 18:36:41,558 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:36:41,566 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2020-04-17 18:36:41,567 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 18:36:41,593 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-17 18:36:41,595 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:41,596 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:36:41,596 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:41,607 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:41,608 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:41,608 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 18:36:42,041 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:42,042 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:42,042 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:36:42,068 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:42,068 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-17 18:36:42,069 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:42,131 INFO L619 ElimStorePlain]: treesize reduction 46, result has 55.8 percent of original size [2020-04-17 18:36:42,131 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:42,132 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:71, output treesize:49 [2020-04-17 18:36:42,252 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:42,252 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:42,261 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:42,278 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:36:42,280 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:42,282 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2020-04-17 18:36:42,282 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:42,288 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:42,299 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:36:42,300 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:42,301 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 52 [2020-04-17 18:36:42,301 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:42,305 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:42,306 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 43 [2020-04-17 18:36:42,307 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:42,326 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:42,326 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:42,327 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:251, output treesize:43 [2020-04-17 18:36:42,553 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:42,554 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 77 [2020-04-17 18:36:42,555 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:42,572 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:42,572 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:42,573 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:51, output treesize:39 [2020-04-17 18:36:42,857 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:42,858 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:42,900 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:36:42,905 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:42,942 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:42,942 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 75 treesize of output 114 [2020-04-17 18:36:42,944 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:42,973 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:36:42,977 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:43,009 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:43,010 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 74 treesize of output 113 [2020-04-17 18:36:43,011 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:43,042 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:43,042 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 87 treesize of output 124 [2020-04-17 18:36:43,043 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:43,078 INFO L619 ElimStorePlain]: treesize reduction 26, result has 63.4 percent of original size [2020-04-17 18:36:43,078 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:43,079 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:258, output treesize:45 [2020-04-17 18:36:43,199 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:43,209 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:36:43,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:36:43,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 38 [2020-04-17 18:36:43,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992497463] [2020-04-17 18:36:43,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-04-17 18:36:43,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:36:43,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-04-17 18:36:43,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1341, Unknown=0, NotChecked=0, Total=1482 [2020-04-17 18:36:43,211 INFO L87 Difference]: Start difference. First operand 456 states and 1011 transitions. Second operand 39 states. [2020-04-17 18:36:44,313 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2020-04-17 18:36:44,545 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2020-04-17 18:36:44,983 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2020-04-17 18:36:45,452 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2020-04-17 18:36:47,242 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2020-04-17 18:36:47,729 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2020-04-17 18:36:48,133 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2020-04-17 18:36:48,344 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 60 [2020-04-17 18:36:48,584 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2020-04-17 18:36:48,986 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2020-04-17 18:36:49,189 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2020-04-17 18:36:49,382 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2020-04-17 18:36:49,594 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2020-04-17 18:36:49,788 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 64 [2020-04-17 18:36:50,015 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2020-04-17 18:36:50,244 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2020-04-17 18:36:50,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:36:50,721 INFO L93 Difference]: Finished difference Result 518 states and 1131 transitions. [2020-04-17 18:36:50,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-04-17 18:36:50,722 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 30 [2020-04-17 18:36:50,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:36:50,725 INFO L225 Difference]: With dead ends: 518 [2020-04-17 18:36:50,725 INFO L226 Difference]: Without dead ends: 506 [2020-04-17 18:36:50,726 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1966 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=884, Invalid=6256, Unknown=0, NotChecked=0, Total=7140 [2020-04-17 18:36:50,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-04-17 18:36:50,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 462. [2020-04-17 18:36:50,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-04-17 18:36:50,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 1023 transitions. [2020-04-17 18:36:50,734 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 1023 transitions. Word has length 30 [2020-04-17 18:36:50,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:36:50,735 INFO L479 AbstractCegarLoop]: Abstraction has 462 states and 1023 transitions. [2020-04-17 18:36:50,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-04-17 18:36:50,735 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 1023 transitions. [2020-04-17 18:36:50,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-17 18:36:50,736 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:36:50,736 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:36:50,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:36:50,938 INFO L427 AbstractCegarLoop]: === Iteration 31 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:36:50,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:36:50,939 INFO L82 PathProgramCache]: Analyzing trace with hash 6218509, now seen corresponding path program 7 times [2020-04-17 18:36:50,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:36:50,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112085421] [2020-04-17 18:36:50,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:36:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:36:52,456 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:36:52,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112085421] [2020-04-17 18:36:52,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981079875] [2020-04-17 18:36:52,456 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:36:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:36:52,543 WARN L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 128 conjunts are in the unsatisfiable core [2020-04-17 18:36:52,546 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:36:52,565 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:52,572 INFO L343 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2020-04-17 18:36:52,572 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:36:52,572 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:52,581 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:52,581 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:52,581 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:27 [2020-04-17 18:36:52,767 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:36:52,790 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:52,790 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 76 [2020-04-17 18:36:52,791 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:52,838 INFO L619 ElimStorePlain]: treesize reduction 46, result has 50.5 percent of original size [2020-04-17 18:36:52,839 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:36:52,839 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:58, output treesize:38 [2020-04-17 18:36:52,923 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:52,923 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:52,929 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:36:52,931 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:52,931 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:36:52,935 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:52,938 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 42 [2020-04-17 18:36:52,938 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:52,947 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:36:52,948 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:52,948 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:36:52,951 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:52,954 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 34 [2020-04-17 18:36:52,955 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:52,958 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:36:52,959 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:52,960 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 33 [2020-04-17 18:36:52,960 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:52,976 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:52,976 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:36:52,976 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:212, output treesize:32 [2020-04-17 18:36:53,262 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:53,262 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:53,283 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:53,284 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:36:53,286 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:53,288 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 45 [2020-04-17 18:36:53,288 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:53,295 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:53,295 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:36:53,300 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:53,302 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 36 [2020-04-17 18:36:53,303 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:53,308 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:53,309 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 37 [2020-04-17 18:36:53,309 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:53,327 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:53,328 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:36:53,328 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:225, output treesize:41 [2020-04-17 18:36:53,412 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:53,412 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 67 [2020-04-17 18:36:53,413 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:53,437 INFO L619 ElimStorePlain]: treesize reduction 16, result has 63.6 percent of original size [2020-04-17 18:36:53,438 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:36:53,438 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:28 [2020-04-17 18:36:53,541 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:53,541 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 44 [2020-04-17 18:36:53,542 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:53,545 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:53,546 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:36:53,546 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:7 [2020-04-17 18:36:53,618 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:36:53,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:36:53,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17] total 36 [2020-04-17 18:36:53,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989260111] [2020-04-17 18:36:53,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-04-17 18:36:53,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:36:53,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-04-17 18:36:53,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1199, Unknown=0, NotChecked=0, Total=1332 [2020-04-17 18:36:53,620 INFO L87 Difference]: Start difference. First operand 462 states and 1023 transitions. Second operand 37 states. [2020-04-17 18:36:57,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:36:57,653 INFO L93 Difference]: Finished difference Result 517 states and 1128 transitions. [2020-04-17 18:36:57,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-04-17 18:36:57,653 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 30 [2020-04-17 18:36:57,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:36:57,656 INFO L225 Difference]: With dead ends: 517 [2020-04-17 18:36:57,656 INFO L226 Difference]: Without dead ends: 507 [2020-04-17 18:36:57,657 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 12 SyntacticMatches, 7 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1172 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=502, Invalid=3920, Unknown=0, NotChecked=0, Total=4422 [2020-04-17 18:36:57,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-04-17 18:36:57,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 468. [2020-04-17 18:36:57,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-04-17 18:36:57,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1035 transitions. [2020-04-17 18:36:57,673 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1035 transitions. Word has length 30 [2020-04-17 18:36:57,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:36:57,674 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 1035 transitions. [2020-04-17 18:36:57,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-04-17 18:36:57,674 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1035 transitions. [2020-04-17 18:36:57,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-17 18:36:57,674 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:36:57,674 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:36:57,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:36:57,877 INFO L427 AbstractCegarLoop]: === Iteration 32 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:36:57,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:36:57,878 INFO L82 PathProgramCache]: Analyzing trace with hash -383631969, now seen corresponding path program 8 times [2020-04-17 18:36:57,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:36:57,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845498473] [2020-04-17 18:36:57,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:36:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:36:58,963 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2020-04-17 18:36:59,152 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:36:59,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845498473] [2020-04-17 18:36:59,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329410268] [2020-04-17 18:36:59,152 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:36:59,233 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 18:36:59,233 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:36:59,235 WARN L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 99 conjunts are in the unsatisfiable core [2020-04-17 18:36:59,236 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:36:59,245 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2020-04-17 18:36:59,245 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:59,265 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-17 18:36:59,268 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:59,269 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:36:59,269 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:59,279 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:59,280 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:59,280 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 18:36:59,595 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:59,596 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:59,596 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:36:59,621 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:59,622 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-17 18:36:59,622 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:59,674 INFO L619 ElimStorePlain]: treesize reduction 46, result has 53.1 percent of original size [2020-04-17 18:36:59,675 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:59,675 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:65, output treesize:43 [2020-04-17 18:36:59,776 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:59,777 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:36:59,784 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:59,801 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:36:59,803 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:59,805 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 43 [2020-04-17 18:36:59,806 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:59,828 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:59,839 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:36:59,841 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:59,842 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2020-04-17 18:36:59,843 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:59,847 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:36:59,850 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 52 [2020-04-17 18:36:59,851 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:36:59,884 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:36:59,885 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:36:59,885 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:233, output treesize:37 [2020-04-17 18:37:00,222 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:00,222 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:00,236 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:00,244 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:00,247 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:00,250 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 47 [2020-04-17 18:37:00,251 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:00,256 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:00,262 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:00,265 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:00,267 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 46 [2020-04-17 18:37:00,267 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:00,271 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:00,272 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 55 [2020-04-17 18:37:00,273 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:00,290 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:00,290 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:00,291 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:240, output treesize:40 [2020-04-17 18:37:00,355 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2020-04-17 18:37:00,356 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:00,377 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:00,378 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:00,378 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:40, output treesize:29 [2020-04-17 18:37:00,490 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:00,495 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:00,499 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:00,501 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:00,502 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 13 [2020-04-17 18:37:00,502 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:00,506 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:00,507 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 14 [2020-04-17 18:37:00,507 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:00,513 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:00,514 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:37:00,514 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:92, output treesize:7 [2020-04-17 18:37:00,554 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:37:00,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:37:00,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 37 [2020-04-17 18:37:00,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113305895] [2020-04-17 18:37:00,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-04-17 18:37:00,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:37:00,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-04-17 18:37:00,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1270, Unknown=0, NotChecked=0, Total=1406 [2020-04-17 18:37:00,556 INFO L87 Difference]: Start difference. First operand 468 states and 1035 transitions. Second operand 38 states. [2020-04-17 18:37:01,799 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 51 [2020-04-17 18:37:02,078 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2020-04-17 18:37:02,267 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 46 [2020-04-17 18:37:02,609 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 56 [2020-04-17 18:37:03,122 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 53 [2020-04-17 18:37:05,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:37:05,160 INFO L93 Difference]: Finished difference Result 513 states and 1118 transitions. [2020-04-17 18:37:05,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-04-17 18:37:05,160 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 30 [2020-04-17 18:37:05,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:37:05,162 INFO L225 Difference]: With dead ends: 513 [2020-04-17 18:37:05,162 INFO L226 Difference]: Without dead ends: 503 [2020-04-17 18:37:05,163 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=531, Invalid=3629, Unknown=0, NotChecked=0, Total=4160 [2020-04-17 18:37:05,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2020-04-17 18:37:05,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 466. [2020-04-17 18:37:05,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-04-17 18:37:05,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1031 transitions. [2020-04-17 18:37:05,169 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1031 transitions. Word has length 30 [2020-04-17 18:37:05,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:37:05,170 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 1031 transitions. [2020-04-17 18:37:05,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-04-17 18:37:05,170 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1031 transitions. [2020-04-17 18:37:05,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-17 18:37:05,170 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:37:05,170 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:37:05,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:37:05,372 INFO L427 AbstractCegarLoop]: === Iteration 33 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:37:05,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:37:05,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1470594389, now seen corresponding path program 9 times [2020-04-17 18:37:05,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:37:05,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750174995] [2020-04-17 18:37:05,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:37:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:37:06,519 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2020-04-17 18:37:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:37:06,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750174995] [2020-04-17 18:37:06,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112853972] [2020-04-17 18:37:06,701 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:37:06,779 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-04-17 18:37:06,779 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:37:06,781 WARN L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 99 conjunts are in the unsatisfiable core [2020-04-17 18:37:06,783 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:37:06,790 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2020-04-17 18:37:06,791 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 18:37:06,815 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-17 18:37:06,819 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:06,820 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:37:06,820 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:06,831 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:06,832 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:06,832 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 18:37:07,131 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:07,131 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:07,132 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:07,157 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:07,157 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-17 18:37:07,158 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:07,211 INFO L619 ElimStorePlain]: treesize reduction 46, result has 53.1 percent of original size [2020-04-17 18:37:07,211 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:07,212 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:65, output treesize:43 [2020-04-17 18:37:07,313 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:07,314 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:07,322 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:07,340 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:07,343 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:07,344 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2020-04-17 18:37:07,344 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:07,349 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:07,362 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:07,364 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:07,365 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 43 [2020-04-17 18:37:07,366 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:07,370 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:07,373 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 52 [2020-04-17 18:37:07,374 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:07,408 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:07,409 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:07,409 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:233, output treesize:37 [2020-04-17 18:37:07,724 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:07,724 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:07,733 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:07,742 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:07,746 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:07,748 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 46 [2020-04-17 18:37:07,749 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:07,755 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:07,762 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:07,766 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:07,781 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 55 [2020-04-17 18:37:07,782 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:07,785 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:07,786 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 47 [2020-04-17 18:37:07,786 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:07,803 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:07,804 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:07,804 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:240, output treesize:40 [2020-04-17 18:37:07,897 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2020-04-17 18:37:07,897 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:07,908 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:07,908 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:07,909 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:40, output treesize:29 [2020-04-17 18:37:08,028 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:08,039 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:08,043 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:08,044 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:08,045 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 13 [2020-04-17 18:37:08,045 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:08,048 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:08,048 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 14 [2020-04-17 18:37:08,049 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:08,054 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:08,055 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:37:08,055 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:92, output treesize:7 [2020-04-17 18:37:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:37:08,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:37:08,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 37 [2020-04-17 18:37:08,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857169509] [2020-04-17 18:37:08,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-04-17 18:37:08,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:37:08,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-04-17 18:37:08,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1272, Unknown=0, NotChecked=0, Total=1406 [2020-04-17 18:37:08,096 INFO L87 Difference]: Start difference. First operand 466 states and 1031 transitions. Second operand 38 states. [2020-04-17 18:37:09,297 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 51 [2020-04-17 18:37:09,548 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2020-04-17 18:37:10,036 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 56 [2020-04-17 18:37:10,526 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 53 [2020-04-17 18:37:12,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:37:12,565 INFO L93 Difference]: Finished difference Result 520 states and 1135 transitions. [2020-04-17 18:37:12,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-04-17 18:37:12,565 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 30 [2020-04-17 18:37:12,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:37:12,568 INFO L225 Difference]: With dead ends: 520 [2020-04-17 18:37:12,569 INFO L226 Difference]: Without dead ends: 510 [2020-04-17 18:37:12,569 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 971 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=500, Invalid=3406, Unknown=0, NotChecked=0, Total=3906 [2020-04-17 18:37:12,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-04-17 18:37:12,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 465. [2020-04-17 18:37:12,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-04-17 18:37:12,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 1029 transitions. [2020-04-17 18:37:12,575 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 1029 transitions. Word has length 30 [2020-04-17 18:37:12,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:37:12,576 INFO L479 AbstractCegarLoop]: Abstraction has 465 states and 1029 transitions. [2020-04-17 18:37:12,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-04-17 18:37:12,576 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 1029 transitions. [2020-04-17 18:37:12,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-17 18:37:12,577 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:37:12,577 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:37:12,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:37:12,781 INFO L427 AbstractCegarLoop]: === Iteration 34 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:37:12,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:37:12,781 INFO L82 PathProgramCache]: Analyzing trace with hash -48444409, now seen corresponding path program 10 times [2020-04-17 18:37:12,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:37:12,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787976086] [2020-04-17 18:37:12,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:37:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:37:14,074 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:37:14,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787976086] [2020-04-17 18:37:14,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47060141] [2020-04-17 18:37:14,075 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:37:14,144 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-17 18:37:14,144 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:37:14,146 WARN L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 120 conjunts are in the unsatisfiable core [2020-04-17 18:37:14,148 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:37:14,162 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2020-04-17 18:37:14,162 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 18:37:14,189 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-17 18:37:14,192 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:14,193 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:37:14,193 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:14,203 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:14,203 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:14,203 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 18:37:14,538 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:14,539 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:14,539 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:14,566 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:14,567 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-17 18:37:14,568 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:14,633 INFO L619 ElimStorePlain]: treesize reduction 46, result has 55.8 percent of original size [2020-04-17 18:37:14,634 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:14,634 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:71, output treesize:49 [2020-04-17 18:37:14,750 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:14,751 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:14,761 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:14,777 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:14,779 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:14,780 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2020-04-17 18:37:14,781 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:14,788 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:14,799 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:14,801 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:14,802 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 52 [2020-04-17 18:37:14,803 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:14,807 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:14,808 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 43 [2020-04-17 18:37:14,809 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:14,828 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:14,828 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:14,828 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:251, output treesize:43 [2020-04-17 18:37:15,098 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:15,099 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:15,107 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:15,116 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:15,121 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:15,124 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 43 [2020-04-17 18:37:15,125 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:15,131 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:15,138 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:15,142 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:15,144 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 44 [2020-04-17 18:37:15,145 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:15,150 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:15,151 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 52 [2020-04-17 18:37:15,151 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:15,170 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:15,171 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:15,171 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:231, output treesize:43 [2020-04-17 18:37:15,330 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:15,330 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 77 [2020-04-17 18:37:15,331 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:15,344 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:15,345 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:15,345 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:51, output treesize:39 [2020-04-17 18:37:15,475 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:15,476 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 47 [2020-04-17 18:37:15,476 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:15,480 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:15,481 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:37:15,481 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:51, output treesize:7 [2020-04-17 18:37:15,562 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:37:15,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:37:15,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 38 [2020-04-17 18:37:15,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425546204] [2020-04-17 18:37:15,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-04-17 18:37:15,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:37:15,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-04-17 18:37:15,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1345, Unknown=0, NotChecked=0, Total=1482 [2020-04-17 18:37:15,564 INFO L87 Difference]: Start difference. First operand 465 states and 1029 transitions. Second operand 39 states. [2020-04-17 18:37:17,051 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 58 [2020-04-17 18:37:17,502 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2020-04-17 18:37:18,011 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2020-04-17 18:37:21,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:37:21,143 INFO L93 Difference]: Finished difference Result 522 states and 1140 transitions. [2020-04-17 18:37:21,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-04-17 18:37:21,143 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 30 [2020-04-17 18:37:21,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:37:21,146 INFO L225 Difference]: With dead ends: 522 [2020-04-17 18:37:21,146 INFO L226 Difference]: Without dead ends: 510 [2020-04-17 18:37:21,147 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1379 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=587, Invalid=4669, Unknown=0, NotChecked=0, Total=5256 [2020-04-17 18:37:21,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-04-17 18:37:21,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 474. [2020-04-17 18:37:21,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 474 states. [2020-04-17 18:37:21,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 1050 transitions. [2020-04-17 18:37:21,153 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 1050 transitions. Word has length 30 [2020-04-17 18:37:21,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:37:21,153 INFO L479 AbstractCegarLoop]: Abstraction has 474 states and 1050 transitions. [2020-04-17 18:37:21,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-04-17 18:37:21,154 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 1050 transitions. [2020-04-17 18:37:21,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-17 18:37:21,154 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:37:21,154 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:37:21,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:37:21,356 INFO L427 AbstractCegarLoop]: === Iteration 35 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:37:21,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:37:21,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1731509287, now seen corresponding path program 11 times [2020-04-17 18:37:21,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:37:21,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878798811] [2020-04-17 18:37:21,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:37:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:37:22,467 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:37:22,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878798811] [2020-04-17 18:37:22,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657642288] [2020-04-17 18:37:22,468 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:37:22,549 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 18:37:22,549 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:37:22,551 WARN L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 108 conjunts are in the unsatisfiable core [2020-04-17 18:37:22,552 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:37:22,558 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2020-04-17 18:37:22,559 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 18:37:22,585 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-17 18:37:22,593 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:22,594 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:37:22,594 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:22,603 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:22,603 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:22,604 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 18:37:22,948 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:22,949 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:22,949 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:22,977 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:22,977 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-17 18:37:22,978 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:23,044 INFO L619 ElimStorePlain]: treesize reduction 46, result has 55.8 percent of original size [2020-04-17 18:37:23,045 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:23,045 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:71, output treesize:49 [2020-04-17 18:37:23,159 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:23,159 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:23,168 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:23,184 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:23,186 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:23,187 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 43 [2020-04-17 18:37:23,188 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:23,195 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:23,206 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:23,208 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:23,209 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 52 [2020-04-17 18:37:23,209 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:23,214 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:23,216 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2020-04-17 18:37:23,216 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:23,237 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:23,237 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:23,238 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:251, output treesize:43 [2020-04-17 18:37:23,438 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:23,438 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:23,449 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:23,460 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:23,464 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:23,468 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 43 [2020-04-17 18:37:23,468 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:23,475 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:23,482 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:23,486 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:23,489 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 44 [2020-04-17 18:37:23,489 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:23,494 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:23,495 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 52 [2020-04-17 18:37:23,496 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:23,514 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:23,515 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:23,515 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:231, output treesize:43 [2020-04-17 18:37:23,723 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:23,723 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 77 [2020-04-17 18:37:23,724 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:23,755 INFO L619 ElimStorePlain]: treesize reduction 16, result has 70.9 percent of original size [2020-04-17 18:37:23,756 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:23,756 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:51, output treesize:39 [2020-04-17 18:37:23,888 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:23,888 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 47 [2020-04-17 18:37:23,889 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:23,893 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:23,894 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:37:23,894 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:51, output treesize:7 [2020-04-17 18:37:23,972 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:37:23,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:37:23,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 38 [2020-04-17 18:37:23,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275074779] [2020-04-17 18:37:23,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-04-17 18:37:23,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:37:23,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-04-17 18:37:23,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1329, Unknown=0, NotChecked=0, Total=1482 [2020-04-17 18:37:23,974 INFO L87 Difference]: Start difference. First operand 474 states and 1050 transitions. Second operand 39 states. [2020-04-17 18:37:25,162 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2020-04-17 18:37:25,444 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-04-17 18:37:25,897 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2020-04-17 18:37:26,312 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2020-04-17 18:37:28,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:37:28,977 INFO L93 Difference]: Finished difference Result 517 states and 1129 transitions. [2020-04-17 18:37:28,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-04-17 18:37:28,977 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 30 [2020-04-17 18:37:28,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:37:28,980 INFO L225 Difference]: With dead ends: 517 [2020-04-17 18:37:28,981 INFO L226 Difference]: Without dead ends: 507 [2020-04-17 18:37:28,981 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=591, Invalid=3965, Unknown=0, NotChecked=0, Total=4556 [2020-04-17 18:37:28,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-04-17 18:37:28,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 483. [2020-04-17 18:37:28,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-04-17 18:37:28,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 1068 transitions. [2020-04-17 18:37:28,988 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 1068 transitions. Word has length 30 [2020-04-17 18:37:28,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:37:28,988 INFO L479 AbstractCegarLoop]: Abstraction has 483 states and 1068 transitions. [2020-04-17 18:37:28,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-04-17 18:37:28,988 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 1068 transitions. [2020-04-17 18:37:28,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-17 18:37:28,989 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:37:28,989 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:37:29,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:37:29,190 INFO L427 AbstractCegarLoop]: === Iteration 36 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:37:29,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:37:29,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1821638042, now seen corresponding path program 19 times [2020-04-17 18:37:29,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:37:29,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907490552] [2020-04-17 18:37:29,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:37:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:37:30,443 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 47 [2020-04-17 18:37:30,707 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 43 [2020-04-17 18:37:31,380 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:37:31,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907490552] [2020-04-17 18:37:31,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33183337] [2020-04-17 18:37:31,381 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:37:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:37:31,463 WARN L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 108 conjunts are in the unsatisfiable core [2020-04-17 18:37:31,464 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:37:31,467 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:31,477 INFO L343 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2020-04-17 18:37:31,477 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:37:31,477 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:31,486 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:31,486 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:31,487 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:27 [2020-04-17 18:37:31,744 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:31,745 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:31,770 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:31,770 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 76 [2020-04-17 18:37:31,771 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:31,816 INFO L619 ElimStorePlain]: treesize reduction 46, result has 48.9 percent of original size [2020-04-17 18:37:31,817 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:37:31,817 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:55, output treesize:44 [2020-04-17 18:37:31,928 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:31,929 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:31,935 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:31,936 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:31,938 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:31,949 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:31,950 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 46 [2020-04-17 18:37:31,951 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:31,956 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:31,957 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:31,958 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:31,967 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:31,968 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 54 [2020-04-17 18:37:31,969 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:31,972 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:31,973 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:31,974 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:31,975 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 45 [2020-04-17 18:37:31,975 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:31,990 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:31,990 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:37:31,991 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:236, output treesize:38 [2020-04-17 18:37:32,260 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:32,261 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:32,262 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:32,263 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:32,264 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:32,265 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:32,303 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:32,304 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 110 [2020-04-17 18:37:32,305 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:32,368 INFO L619 ElimStorePlain]: treesize reduction 72, result has 42.4 percent of original size [2020-04-17 18:37:32,368 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:37:32,369 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:66, output treesize:44 [2020-04-17 18:37:32,437 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:32,437 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:32,444 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:32,446 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:32,447 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:32,456 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:32,457 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 54 [2020-04-17 18:37:32,458 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:32,463 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:32,465 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:32,466 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:32,476 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:32,477 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 46 [2020-04-17 18:37:32,477 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:32,481 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:32,482 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:32,483 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:32,483 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 45 [2020-04-17 18:37:32,484 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:32,498 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:32,499 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:37:32,499 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:236, output treesize:38 [2020-04-17 18:37:32,714 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:32,714 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 117 [2020-04-17 18:37:32,715 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:32,764 INFO L619 ElimStorePlain]: treesize reduction 64, result has 43.9 percent of original size [2020-04-17 18:37:32,765 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:32,765 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:37:32,766 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:50, output treesize:21 [2020-04-17 18:37:32,847 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:32,847 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 35 [2020-04-17 18:37:32,848 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:32,851 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:32,851 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:37:32,851 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:9 [2020-04-17 18:37:32,930 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:37:32,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:37:32,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21] total 41 [2020-04-17 18:37:32,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677774749] [2020-04-17 18:37:32,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-04-17 18:37:32,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:37:32,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-04-17 18:37:32,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1618, Unknown=0, NotChecked=0, Total=1806 [2020-04-17 18:37:32,931 INFO L87 Difference]: Start difference. First operand 483 states and 1068 transitions. Second operand 43 states. [2020-04-17 18:37:37,730 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2020-04-17 18:37:38,088 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2020-04-17 18:37:38,771 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2020-04-17 18:37:39,889 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-04-17 18:37:40,239 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-04-17 18:37:40,499 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-04-17 18:37:40,781 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-04-17 18:37:40,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:37:40,922 INFO L93 Difference]: Finished difference Result 676 states and 1486 transitions. [2020-04-17 18:37:40,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-04-17 18:37:40,923 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 30 [2020-04-17 18:37:40,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:37:40,926 INFO L225 Difference]: With dead ends: 676 [2020-04-17 18:37:40,926 INFO L226 Difference]: Without dead ends: 676 [2020-04-17 18:37:40,926 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 6 SyntacticMatches, 9 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2662 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1088, Invalid=7842, Unknown=0, NotChecked=0, Total=8930 [2020-04-17 18:37:40,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2020-04-17 18:37:40,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 591. [2020-04-17 18:37:40,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-04-17 18:37:40,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1316 transitions. [2020-04-17 18:37:40,933 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1316 transitions. Word has length 30 [2020-04-17 18:37:40,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:37:40,933 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 1316 transitions. [2020-04-17 18:37:40,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-04-17 18:37:40,933 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1316 transitions. [2020-04-17 18:37:40,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-17 18:37:40,934 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:37:40,935 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:37:41,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:37:41,138 INFO L427 AbstractCegarLoop]: === Iteration 37 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:37:41,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:37:41,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1419859069, now seen corresponding path program 12 times [2020-04-17 18:37:41,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:37:41,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361309349] [2020-04-17 18:37:41,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:37:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:37:42,212 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-04-17 18:37:42,766 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:37:42,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361309349] [2020-04-17 18:37:42,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167270372] [2020-04-17 18:37:42,767 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:37:42,841 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-04-17 18:37:42,841 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:37:42,843 WARN L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 100 conjunts are in the unsatisfiable core [2020-04-17 18:37:42,844 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:37:42,853 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2020-04-17 18:37:42,854 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:42,872 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-17 18:37:42,876 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:42,877 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:37:42,877 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:42,888 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:42,889 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:42,889 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 18:37:43,261 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:43,262 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:43,262 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:43,287 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:43,288 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-17 18:37:43,289 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:43,344 INFO L619 ElimStorePlain]: treesize reduction 46, result has 54.5 percent of original size [2020-04-17 18:37:43,345 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:43,345 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:68, output treesize:52 [2020-04-17 18:37:43,514 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:43,515 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:43,524 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:43,526 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:43,527 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:43,552 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:43,553 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2020-04-17 18:37:43,554 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:43,561 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:43,563 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:43,564 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:43,587 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:43,588 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 56 [2020-04-17 18:37:43,589 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:43,593 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:43,594 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:43,595 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:43,596 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-17 18:37:43,596 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:43,612 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:43,612 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:43,613 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:260, output treesize:46 [2020-04-17 18:37:43,884 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:43,885 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 103 [2020-04-17 18:37:43,886 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:43,898 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:43,898 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:43,898 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:55, output treesize:36 [2020-04-17 18:37:44,119 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:44,120 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:44,141 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:44,143 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:44,146 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 60 [2020-04-17 18:37:44,147 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:44,167 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:44,169 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:44,172 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2020-04-17 18:37:44,172 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:44,176 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 52 [2020-04-17 18:37:44,177 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:44,190 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:44,190 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:44,191 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:210, output treesize:36 [2020-04-17 18:37:44,316 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:44,366 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:37:44,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:37:44,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 18] total 40 [2020-04-17 18:37:44,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452684229] [2020-04-17 18:37:44,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-04-17 18:37:44,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:37:44,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-04-17 18:37:44,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1511, Unknown=0, NotChecked=0, Total=1640 [2020-04-17 18:37:44,367 INFO L87 Difference]: Start difference. First operand 591 states and 1316 transitions. Second operand 41 states. [2020-04-17 18:37:45,615 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-04-17 18:37:46,013 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2020-04-17 18:37:46,383 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2020-04-17 18:37:46,573 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2020-04-17 18:37:46,773 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2020-04-17 18:37:46,936 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 50 [2020-04-17 18:37:47,170 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2020-04-17 18:37:47,447 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2020-04-17 18:37:47,695 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2020-04-17 18:37:47,931 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 61 [2020-04-17 18:37:48,092 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 52 [2020-04-17 18:37:48,549 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 65 [2020-04-17 18:37:49,012 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 63 [2020-04-17 18:37:49,345 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 58 [2020-04-17 18:37:51,693 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 49 [2020-04-17 18:37:52,477 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 54 [2020-04-17 18:37:53,474 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 52 [2020-04-17 18:37:54,043 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 54 [2020-04-17 18:37:54,239 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 54 [2020-04-17 18:37:55,233 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 54 [2020-04-17 18:37:55,487 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 44 [2020-04-17 18:37:56,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:37:56,272 INFO L93 Difference]: Finished difference Result 798 states and 1750 transitions. [2020-04-17 18:37:56,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-04-17 18:37:56,272 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 30 [2020-04-17 18:37:56,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:37:56,277 INFO L225 Difference]: With dead ends: 798 [2020-04-17 18:37:56,277 INFO L226 Difference]: Without dead ends: 786 [2020-04-17 18:37:56,278 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3271 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=1289, Invalid=10483, Unknown=0, NotChecked=0, Total=11772 [2020-04-17 18:37:56,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2020-04-17 18:37:56,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 654. [2020-04-17 18:37:56,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2020-04-17 18:37:56,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1449 transitions. [2020-04-17 18:37:56,286 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1449 transitions. Word has length 30 [2020-04-17 18:37:56,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:37:56,287 INFO L479 AbstractCegarLoop]: Abstraction has 654 states and 1449 transitions. [2020-04-17 18:37:56,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-04-17 18:37:56,287 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1449 transitions. [2020-04-17 18:37:56,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-17 18:37:56,288 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:37:56,288 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:37:56,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:37:56,489 INFO L427 AbstractCegarLoop]: === Iteration 38 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:37:56,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:37:56,490 INFO L82 PathProgramCache]: Analyzing trace with hash 272853197, now seen corresponding path program 13 times [2020-04-17 18:37:56,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:37:56,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795498642] [2020-04-17 18:37:56,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:37:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:37:57,803 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:37:57,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795498642] [2020-04-17 18:37:57,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759137745] [2020-04-17 18:37:57,804 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-04-17 18:37:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:37:57,878 WARN L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 112 conjunts are in the unsatisfiable core [2020-04-17 18:37:57,880 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:37:57,901 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2020-04-17 18:37:57,901 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:57,932 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-17 18:37:57,936 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:57,936 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 18:37:57,937 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:57,945 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:57,946 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:57,946 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:52, output treesize:31 [2020-04-17 18:37:58,344 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:58,345 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:58,346 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:58,371 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:58,371 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-17 18:37:58,372 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:58,441 INFO L619 ElimStorePlain]: treesize reduction 46, result has 57.8 percent of original size [2020-04-17 18:37:58,442 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:58,442 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:76, output treesize:60 [2020-04-17 18:37:58,605 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:58,606 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:58,613 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:58,615 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:58,616 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:58,639 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:58,644 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2020-04-17 18:37:58,644 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:58,650 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:58,651 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:58,652 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:58,667 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:58,670 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-17 18:37:58,671 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:58,676 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:58,677 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:58,678 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:58,679 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 56 [2020-04-17 18:37:58,679 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:58,701 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:37:58,702 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:58,702 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:278, output treesize:52 [2020-04-17 18:37:59,134 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:59,135 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:37:59,146 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:59,148 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:59,149 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:59,149 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:59,160 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:59,176 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 59 [2020-04-17 18:37:59,176 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:59,183 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:59,185 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:59,186 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:59,187 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:37:59,193 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:59,205 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 58 [2020-04-17 18:37:59,206 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:59,212 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:59,213 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:59,214 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:37:59,215 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 67 [2020-04-17 18:37:59,216 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 18:37:59,263 INFO L619 ElimStorePlain]: treesize reduction 4, result has 92.7 percent of original size [2020-04-17 18:37:59,264 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:37:59,264 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:285, output treesize:51 Received shutdown request... [2020-04-17 18:37:59,350 WARN L209 SmtUtils]: Removed 2 from assertion stack [2020-04-17 18:37:59,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:37:59,552 WARN L544 AbstractCegarLoop]: Verification canceled [2020-04-17 18:37:59,556 WARN L228 ceAbstractionStarter]: Timeout [2020-04-17 18:37:59,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 06:37:59 BasicIcfg [2020-04-17 18:37:59,556 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 18:37:59,557 INFO L168 Benchmark]: Toolchain (without parser) took 246061.91 ms. Allocated memory was 146.3 MB in the beginning and 325.6 MB in the end (delta: 179.3 MB). Free memory was 102.5 MB in the beginning and 123.1 MB in the end (delta: -20.6 MB). Peak memory consumption was 158.7 MB. Max. memory is 7.1 GB. [2020-04-17 18:37:59,557 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-17 18:37:59,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 863.30 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 100.6 MB in the beginning and 148.5 MB in the end (delta: -47.9 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-04-17 18:37:59,558 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.91 ms. Allocated memory is still 202.9 MB. Free memory was 148.5 MB in the beginning and 145.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-04-17 18:37:59,558 INFO L168 Benchmark]: Boogie Preprocessor took 86.06 ms. Allocated memory is still 202.9 MB. Free memory was 145.7 MB in the beginning and 144.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 18:37:59,558 INFO L168 Benchmark]: RCFGBuilder took 560.53 ms. Allocated memory is still 202.9 MB. Free memory was 144.4 MB in the beginning and 113.5 MB in the end (delta: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. [2020-04-17 18:37:59,558 INFO L168 Benchmark]: TraceAbstraction took 244461.95 ms. Allocated memory was 202.9 MB in the beginning and 325.6 MB in the end (delta: 122.7 MB). Free memory was 113.5 MB in the beginning and 123.1 MB in the end (delta: -9.6 MB). Peak memory consumption was 113.1 MB. Max. memory is 7.1 GB. [2020-04-17 18:37:59,559 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 863.30 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 100.6 MB in the beginning and 148.5 MB in the end (delta: -47.9 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 63.91 ms. Allocated memory is still 202.9 MB. Free memory was 148.5 MB in the beginning and 145.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.06 ms. Allocated memory is still 202.9 MB. Free memory was 145.7 MB in the beginning and 144.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 560.53 ms. Allocated memory is still 202.9 MB. Free memory was 144.4 MB in the beginning and 113.5 MB in the end (delta: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 244461.95 ms. Allocated memory was 202.9 MB in the beginning and 325.6 MB in the end (delta: 122.7 MB). Free memory was 113.5 MB in the beginning and 123.1 MB in the end (delta: -9.6 MB). Peak memory consumption was 113.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 3.3s, 122 ProgramPointsBefore, 31 ProgramPointsAfterwards, 128 TransitionsBefore, 34 TransitionsAfterwards, 4968 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 78 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 3 ChoiceCompositions, 2682 VarBasedMoverChecksPositive, 65 VarBasedMoverChecksNegative, 23 SemBasedMoverChecksPositive, 68 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.7s, 0 MoverChecksTotal, 5902 CheckedPairsTotal, 114 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 821]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 821). Cancelled while BasicCegarLoop was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 35 for 27ms.. - TimeoutResultAtElement [Line: 825]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 825). Cancelled while BasicCegarLoop was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 35 for 27ms.. - TimeoutResultAtElement [Line: 826]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 826). Cancelled while BasicCegarLoop was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 35 for 27ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 119 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 244.3s, OverallIterations: 38, TraceHistogramMax: 3, AutomataDifference: 157.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 1082 SDtfs, 6000 SDslu, 7553 SDs, 0 SdLazy, 55588 SolverSat, 2340 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 57.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2227 GetRequests, 264 SyntacticMatches, 97 SemanticMatches, 1866 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31157 ImplicationChecksByTransitivity, 148.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=654occurred in iteration=37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 37 MinimizatonAttempts, 2976 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 71.2s InterpolantComputationTime, 1515 NumberOfCodeBlocks, 1515 NumberOfCodeBlocksAsserted, 86 NumberOfCheckSat, 1452 ConstructedInterpolants, 487 QuantifiedInterpolants, 1243363 SizeOfPredicates, 1081 NumberOfNonLiveVariables, 4358 ConjunctsInSsa, 2455 ConjunctsInUnsatCore, 63 InterpolantComputations, 11 PerfectInterpolantSequences, 69/436 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