/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/singleton.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-16 14:06:03,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 14:06:03,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 14:06:03,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 14:06:03,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 14:06:03,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 14:06:03,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 14:06:03,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 14:06:03,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 14:06:03,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 14:06:03,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 14:06:03,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 14:06:03,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 14:06:03,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 14:06:03,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 14:06:03,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 14:06:03,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 14:06:03,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 14:06:03,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 14:06:03,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 14:06:03,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 14:06:03,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 14:06:03,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 14:06:03,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 14:06:03,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-16 14:06:03,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-16 14:06:03,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-16 14:06:03,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-16 14:06:03,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-16 14:06:03,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-16 14:06:03,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 14:06:03,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 14:06:03,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 14:06:03,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 14:06:03,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 14:06:03,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 14:06:03,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 14:06:03,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 14:06:03,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 14:06:03,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 14:06:03,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 14:06:03,602 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 [2020-09-16 14:06:03,638 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 14:06:03,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 14:06:03,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 14:06:03,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 14:06:03,641 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 14:06:03,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 14:06:03,642 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 14:06:03,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 14:06:03,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 14:06:03,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 14:06:03,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 14:06:03,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 14:06:03,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 14:06:03,643 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 14:06:03,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 14:06:03,643 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 14:06:03,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 14:06:03,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 14:06:03,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 14:06:03,644 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 14:06:03,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 14:06:03,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 14:06:03,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 14:06:03,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-16 14:06:03,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 14:06:03,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 14:06:03,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 14:06:03,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 14:06:03,646 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-16 14:06:03,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-16 14:06:04,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 14:06:04,137 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 14:06:04,143 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 14:06:04,145 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 14:06:04,146 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 14:06:04,147 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/singleton.i [2020-09-16 14:06:04,258 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e77f0a0/518274c39c6b4e67b0f4ca2742e47007/FLAG3deb2561e [2020-09-16 14:06:05,131 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 14:06:05,133 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton.i [2020-09-16 14:06:05,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e77f0a0/518274c39c6b4e67b0f4ca2742e47007/FLAG3deb2561e [2020-09-16 14:06:05,272 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e77f0a0/518274c39c6b4e67b0f4ca2742e47007 [2020-09-16 14:06:05,292 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 14:06:05,304 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 14:06:05,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 14:06:05,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 14:06:05,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 14:06:05,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 02:06:05" (1/1) ... [2020-09-16 14:06:05,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aaa55f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:06:05, skipping insertion in model container [2020-09-16 14:06:05,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 02:06:05" (1/1) ... [2020-09-16 14:06:05,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 14:06:05,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 14:06:06,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 14:06:06,428 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 14:06:06,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 14:06:06,727 INFO L208 MainTranslator]: Completed translation [2020-09-16 14:06:06,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:06:06 WrapperNode [2020-09-16 14:06:06,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 14:06:06,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 14:06:06,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 14:06:06,731 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 14:06:06,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:06:06" (1/1) ... [2020-09-16 14:06:06,774 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:06:06" (1/1) ... [2020-09-16 14:06:06,809 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 14:06:06,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 14:06:06,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 14:06:06,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 14:06:06,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:06:06" (1/1) ... [2020-09-16 14:06:06,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:06:06" (1/1) ... [2020-09-16 14:06:06,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:06:06" (1/1) ... [2020-09-16 14:06:06,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:06:06" (1/1) ... [2020-09-16 14:06:06,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:06:06" (1/1) ... [2020-09-16 14:06:06,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:06:06" (1/1) ... [2020-09-16 14:06:06,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:06:06" (1/1) ... [2020-09-16 14:06:06,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 14:06:06,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 14:06:06,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 14:06:06,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 14:06:06,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:06:06" (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 [2020-09-16 14:06:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 14:06:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 14:06:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-16 14:06:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2020-09-16 14:06:06,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2020-09-16 14:06:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-09-16 14:06:06,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-09-16 14:06:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-09-16 14:06:06,949 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-09-16 14:06:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2020-09-16 14:06:06,949 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2020-09-16 14:06:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 14:06:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-16 14:06:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 14:06:06,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 14:06:06,953 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 14:06:07,565 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 14:06:07,565 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-16 14:06:07,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 02:06:07 BoogieIcfgContainer [2020-09-16 14:06:07,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 14:06:07,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 14:06:07,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 14:06:07,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 14:06:07,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 02:06:05" (1/3) ... [2020-09-16 14:06:07,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402242b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 02:06:07, skipping insertion in model container [2020-09-16 14:06:07,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:06:06" (2/3) ... [2020-09-16 14:06:07,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402242b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 02:06:07, skipping insertion in model container [2020-09-16 14:06:07,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 02:06:07" (3/3) ... [2020-09-16 14:06:07,585 INFO L109 eAbstractionObserver]: Analyzing ICFG singleton.i [2020-09-16 14:06:07,600 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 14:06:07,601 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-16 14:06:07,614 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 14:06:07,616 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 14:06:07,664 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,665 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,665 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,665 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,666 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,666 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,666 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,667 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,667 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,667 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,668 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,668 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,668 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,669 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,669 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,669 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,670 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,670 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,671 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,671 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,672 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,672 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,689 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,690 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,690 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,690 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,691 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,691 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,691 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,695 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,695 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,695 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,696 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,696 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,696 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,697 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,697 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,697 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,698 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,698 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,698 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,698 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,699 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,699 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,699 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,699 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,700 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,700 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,700 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,700 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,701 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,701 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,701 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,701 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,702 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,702 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,702 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,703 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,703 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,703 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,703 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,704 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,704 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,704 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,704 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,704 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,705 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork4_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,705 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork4_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,705 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,706 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,706 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork4_#t~malloc2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,706 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork4_#t~malloc2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,707 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork4_#t~malloc2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,707 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork4_#t~malloc2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,707 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,707 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,708 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,708 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,708 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,708 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,709 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,709 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,709 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,710 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,710 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,710 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,710 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,711 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,711 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,711 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,711 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,712 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,713 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,713 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,713 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,713 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,714 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,714 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,720 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,721 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,721 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,721 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,730 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,731 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,731 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,731 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,734 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,734 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,734 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,735 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,739 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,739 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,739 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,740 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,740 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,740 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,740 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,740 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,741 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,741 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,741 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,741 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,741 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,742 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,742 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,742 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,742 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,742 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,743 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,743 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,743 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,743 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,744 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,744 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork3_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,749 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,749 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,749 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,750 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork4_#t~malloc2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,750 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,750 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork4_#t~malloc2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,753 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,754 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,754 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,754 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,757 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,758 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,758 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,758 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork4_#t~malloc2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,758 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,759 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork4_#t~malloc2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,763 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,763 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,763 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,763 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,767 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,767 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,767 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,767 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,771 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,771 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,771 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,772 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,775 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,776 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,776 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:07,777 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:06:08,004 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-09-16 14:06:08,043 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 14:06:08,044 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 14:06:08,044 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-16 14:06:08,044 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-16 14:06:08,044 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 14:06:08,045 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 14:06:08,045 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 14:06:08,045 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 14:06:08,078 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 243 transitions, 866 flow [2020-09-16 14:06:08,082 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 172 places, 243 transitions, 866 flow [2020-09-16 14:06:08,224 INFO L129 PetriNetUnfolder]: 61/264 cut-off events. [2020-09-16 14:06:08,225 INFO L130 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2020-09-16 14:06:08,240 INFO L80 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 264 events. 61/264 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 750 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 353. Up to 24 conditions per place. [2020-09-16 14:06:08,258 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 172 places, 243 transitions, 866 flow [2020-09-16 14:06:08,341 INFO L129 PetriNetUnfolder]: 61/264 cut-off events. [2020-09-16 14:06:08,341 INFO L130 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2020-09-16 14:06:08,346 INFO L80 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 264 events. 61/264 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 750 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 353. Up to 24 conditions per place. [2020-09-16 14:06:08,360 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4038 [2020-09-16 14:06:08,363 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-16 14:06:09,913 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-09-16 14:06:10,021 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-09-16 14:06:10,483 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-09-16 14:06:10,641 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-09-16 14:06:10,920 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2242 [2020-09-16 14:06:10,920 INFO L214 etLargeBlockEncoding]: Total number of compositions: 75 [2020-09-16 14:06:10,927 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 101 places, 173 transitions, 726 flow [2020-09-16 14:06:11,658 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 3502 states. [2020-09-16 14:06:11,662 INFO L276 IsEmpty]: Start isEmpty. Operand 3502 states. [2020-09-16 14:06:11,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 14:06:11,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:11,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:11,682 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:11,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:11,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1069688068, now seen corresponding path program 1 times [2020-09-16 14:06:11,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:11,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455901302] [2020-09-16 14:06:11,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:12,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:12,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455901302] [2020-09-16 14:06:12,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:12,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-16 14:06:12,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883535629] [2020-09-16 14:06:12,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 14:06:12,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:12,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 14:06:12,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-16 14:06:12,211 INFO L87 Difference]: Start difference. First operand 3502 states. Second operand 6 states. [2020-09-16 14:06:12,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:12,761 INFO L93 Difference]: Finished difference Result 4760 states and 19900 transitions. [2020-09-16 14:06:12,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 14:06:12,764 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-09-16 14:06:12,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:12,857 INFO L225 Difference]: With dead ends: 4760 [2020-09-16 14:06:12,857 INFO L226 Difference]: Without dead ends: 4272 [2020-09-16 14:06:12,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-16 14:06:12,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4272 states. [2020-09-16 14:06:13,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4272 to 3018. [2020-09-16 14:06:13,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3018 states. [2020-09-16 14:06:13,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3018 states to 3018 states and 12272 transitions. [2020-09-16 14:06:13,211 INFO L78 Accepts]: Start accepts. Automaton has 3018 states and 12272 transitions. Word has length 9 [2020-09-16 14:06:13,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:13,213 INFO L479 AbstractCegarLoop]: Abstraction has 3018 states and 12272 transitions. [2020-09-16 14:06:13,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 14:06:13,223 INFO L276 IsEmpty]: Start isEmpty. Operand 3018 states and 12272 transitions. [2020-09-16 14:06:13,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 14:06:13,226 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:13,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:13,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 14:06:13,227 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:13,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:13,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1263032832, now seen corresponding path program 2 times [2020-09-16 14:06:13,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:13,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60007869] [2020-09-16 14:06:13,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:13,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60007869] [2020-09-16 14:06:13,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:13,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-16 14:06:13,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452015120] [2020-09-16 14:06:13,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 14:06:13,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:13,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 14:06:13,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-16 14:06:13,566 INFO L87 Difference]: Start difference. First operand 3018 states and 12272 transitions. Second operand 6 states. [2020-09-16 14:06:13,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:13,984 INFO L93 Difference]: Finished difference Result 5518 states and 23821 transitions. [2020-09-16 14:06:13,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 14:06:13,984 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-09-16 14:06:13,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:14,061 INFO L225 Difference]: With dead ends: 5518 [2020-09-16 14:06:14,061 INFO L226 Difference]: Without dead ends: 5518 [2020-09-16 14:06:14,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-16 14:06:14,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5518 states. [2020-09-16 14:06:14,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5518 to 3008. [2020-09-16 14:06:14,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3008 states. [2020-09-16 14:06:14,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 12255 transitions. [2020-09-16 14:06:14,332 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 12255 transitions. Word has length 9 [2020-09-16 14:06:14,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:14,332 INFO L479 AbstractCegarLoop]: Abstraction has 3008 states and 12255 transitions. [2020-09-16 14:06:14,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 14:06:14,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 12255 transitions. [2020-09-16 14:06:14,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-16 14:06:14,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:14,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:14,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 14:06:14,335 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:14,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:14,336 INFO L82 PathProgramCache]: Analyzing trace with hash -690496787, now seen corresponding path program 1 times [2020-09-16 14:06:14,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:14,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801404900] [2020-09-16 14:06:14,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:14,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:14,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801404900] [2020-09-16 14:06:14,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:14,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 14:06:14,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553379074] [2020-09-16 14:06:14,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 14:06:14,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:14,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 14:06:14,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 14:06:14,438 INFO L87 Difference]: Start difference. First operand 3008 states and 12255 transitions. Second operand 3 states. [2020-09-16 14:06:14,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:14,659 INFO L93 Difference]: Finished difference Result 4848 states and 19273 transitions. [2020-09-16 14:06:14,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 14:06:14,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-09-16 14:06:14,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:14,730 INFO L225 Difference]: With dead ends: 4848 [2020-09-16 14:06:14,730 INFO L226 Difference]: Without dead ends: 3558 [2020-09-16 14:06:14,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 14:06:14,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3558 states. [2020-09-16 14:06:15,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3558 to 3181. [2020-09-16 14:06:15,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3181 states. [2020-09-16 14:06:15,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3181 states to 3181 states and 12171 transitions. [2020-09-16 14:06:15,048 INFO L78 Accepts]: Start accepts. Automaton has 3181 states and 12171 transitions. Word has length 16 [2020-09-16 14:06:15,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:15,048 INFO L479 AbstractCegarLoop]: Abstraction has 3181 states and 12171 transitions. [2020-09-16 14:06:15,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 14:06:15,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3181 states and 12171 transitions. [2020-09-16 14:06:15,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-16 14:06:15,053 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:15,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:15,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 14:06:15,054 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:15,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:15,055 INFO L82 PathProgramCache]: Analyzing trace with hash 69435085, now seen corresponding path program 1 times [2020-09-16 14:06:15,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:15,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564894536] [2020-09-16 14:06:15,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:15,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:15,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564894536] [2020-09-16 14:06:15,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:15,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-16 14:06:15,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132218754] [2020-09-16 14:06:15,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 14:06:15,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:15,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 14:06:15,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-16 14:06:15,284 INFO L87 Difference]: Start difference. First operand 3181 states and 12171 transitions. Second operand 6 states. [2020-09-16 14:06:15,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:15,598 INFO L93 Difference]: Finished difference Result 4417 states and 17212 transitions. [2020-09-16 14:06:15,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 14:06:15,599 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-09-16 14:06:15,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:15,630 INFO L225 Difference]: With dead ends: 4417 [2020-09-16 14:06:15,630 INFO L226 Difference]: Without dead ends: 4393 [2020-09-16 14:06:15,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-16 14:06:15,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4393 states. [2020-09-16 14:06:15,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4393 to 3588. [2020-09-16 14:06:15,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3588 states. [2020-09-16 14:06:15,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3588 states to 3588 states and 14085 transitions. [2020-09-16 14:06:15,847 INFO L78 Accepts]: Start accepts. Automaton has 3588 states and 14085 transitions. Word has length 17 [2020-09-16 14:06:15,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:15,847 INFO L479 AbstractCegarLoop]: Abstraction has 3588 states and 14085 transitions. [2020-09-16 14:06:15,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 14:06:15,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3588 states and 14085 transitions. [2020-09-16 14:06:15,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-16 14:06:15,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:15,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:15,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 14:06:15,858 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:15,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:15,859 INFO L82 PathProgramCache]: Analyzing trace with hash -954298863, now seen corresponding path program 2 times [2020-09-16 14:06:15,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:15,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658177582] [2020-09-16 14:06:15,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:16,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:16,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658177582] [2020-09-16 14:06:16,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:16,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-16 14:06:16,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101733208] [2020-09-16 14:06:16,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 14:06:16,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:16,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 14:06:16,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-16 14:06:16,022 INFO L87 Difference]: Start difference. First operand 3588 states and 14085 transitions. Second operand 6 states. [2020-09-16 14:06:16,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:16,183 INFO L93 Difference]: Finished difference Result 4024 states and 15445 transitions. [2020-09-16 14:06:16,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 14:06:16,184 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-09-16 14:06:16,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:16,208 INFO L225 Difference]: With dead ends: 4024 [2020-09-16 14:06:16,209 INFO L226 Difference]: Without dead ends: 4024 [2020-09-16 14:06:16,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-16 14:06:16,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2020-09-16 14:06:16,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3573. [2020-09-16 14:06:16,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3573 states. [2020-09-16 14:06:16,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3573 states to 3573 states and 14045 transitions. [2020-09-16 14:06:16,399 INFO L78 Accepts]: Start accepts. Automaton has 3573 states and 14045 transitions. Word has length 17 [2020-09-16 14:06:16,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:16,400 INFO L479 AbstractCegarLoop]: Abstraction has 3573 states and 14045 transitions. [2020-09-16 14:06:16,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 14:06:16,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3573 states and 14045 transitions. [2020-09-16 14:06:16,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-16 14:06:16,402 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:16,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:16,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-16 14:06:16,403 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:16,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:16,404 INFO L82 PathProgramCache]: Analyzing trace with hash -687500069, now seen corresponding path program 1 times [2020-09-16 14:06:16,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:16,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005247362] [2020-09-16 14:06:16,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:16,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:16,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005247362] [2020-09-16 14:06:16,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:16,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-16 14:06:16,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876059608] [2020-09-16 14:06:16,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 14:06:16,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:16,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 14:06:16,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-16 14:06:16,525 INFO L87 Difference]: Start difference. First operand 3573 states and 14045 transitions. Second operand 6 states. [2020-09-16 14:06:16,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:16,887 INFO L93 Difference]: Finished difference Result 4225 states and 16225 transitions. [2020-09-16 14:06:16,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 14:06:16,888 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-09-16 14:06:16,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:16,914 INFO L225 Difference]: With dead ends: 4225 [2020-09-16 14:06:16,915 INFO L226 Difference]: Without dead ends: 4129 [2020-09-16 14:06:16,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-16 14:06:16,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4129 states. [2020-09-16 14:06:17,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4129 to 3713. [2020-09-16 14:06:17,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3713 states. [2020-09-16 14:06:17,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 14455 transitions. [2020-09-16 14:06:17,099 INFO L78 Accepts]: Start accepts. Automaton has 3713 states and 14455 transitions. Word has length 18 [2020-09-16 14:06:17,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:17,099 INFO L479 AbstractCegarLoop]: Abstraction has 3713 states and 14455 transitions. [2020-09-16 14:06:17,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 14:06:17,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states and 14455 transitions. [2020-09-16 14:06:17,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-16 14:06:17,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:17,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:17,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-16 14:06:17,102 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:17,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:17,103 INFO L82 PathProgramCache]: Analyzing trace with hash -454402421, now seen corresponding path program 2 times [2020-09-16 14:06:17,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:17,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891213375] [2020-09-16 14:06:17,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:17,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:17,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891213375] [2020-09-16 14:06:17,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:17,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-16 14:06:17,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501624460] [2020-09-16 14:06:17,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-16 14:06:17,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:17,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-16 14:06:17,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-16 14:06:17,223 INFO L87 Difference]: Start difference. First operand 3713 states and 14455 transitions. Second operand 7 states. [2020-09-16 14:06:17,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:17,609 INFO L93 Difference]: Finished difference Result 4979 states and 19779 transitions. [2020-09-16 14:06:17,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-16 14:06:17,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-09-16 14:06:17,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:17,641 INFO L225 Difference]: With dead ends: 4979 [2020-09-16 14:06:17,641 INFO L226 Difference]: Without dead ends: 4905 [2020-09-16 14:06:17,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-16 14:06:17,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4905 states. [2020-09-16 14:06:17,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4905 to 4131. [2020-09-16 14:06:17,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4131 states. [2020-09-16 14:06:17,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4131 states to 4131 states and 16620 transitions. [2020-09-16 14:06:17,826 INFO L78 Accepts]: Start accepts. Automaton has 4131 states and 16620 transitions. Word has length 18 [2020-09-16 14:06:17,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:17,827 INFO L479 AbstractCegarLoop]: Abstraction has 4131 states and 16620 transitions. [2020-09-16 14:06:17,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-16 14:06:17,827 INFO L276 IsEmpty]: Start isEmpty. Operand 4131 states and 16620 transitions. [2020-09-16 14:06:17,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-16 14:06:17,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:17,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:17,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-16 14:06:17,830 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:17,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:17,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1254406997, now seen corresponding path program 3 times [2020-09-16 14:06:17,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:17,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564740269] [2020-09-16 14:06:17,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:18,381 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-09-16 14:06:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:18,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564740269] [2020-09-16 14:06:18,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:18,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-16 14:06:18,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146907879] [2020-09-16 14:06:18,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-16 14:06:18,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:18,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-16 14:06:18,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-16 14:06:18,416 INFO L87 Difference]: Start difference. First operand 4131 states and 16620 transitions. Second operand 8 states. [2020-09-16 14:06:18,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:18,784 INFO L93 Difference]: Finished difference Result 6735 states and 27904 transitions. [2020-09-16 14:06:18,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-16 14:06:18,785 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-09-16 14:06:18,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:18,813 INFO L225 Difference]: With dead ends: 6735 [2020-09-16 14:06:18,813 INFO L226 Difference]: Without dead ends: 6661 [2020-09-16 14:06:18,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-09-16 14:06:18,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6661 states. [2020-09-16 14:06:18,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6661 to 4129. [2020-09-16 14:06:18,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4129 states. [2020-09-16 14:06:19,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4129 states to 4129 states and 16616 transitions. [2020-09-16 14:06:19,014 INFO L78 Accepts]: Start accepts. Automaton has 4129 states and 16616 transitions. Word has length 18 [2020-09-16 14:06:19,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:19,014 INFO L479 AbstractCegarLoop]: Abstraction has 4129 states and 16616 transitions. [2020-09-16 14:06:19,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-16 14:06:19,015 INFO L276 IsEmpty]: Start isEmpty. Operand 4129 states and 16616 transitions. [2020-09-16 14:06:19,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-16 14:06:19,017 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:19,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:19,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-16 14:06:19,018 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:19,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:19,018 INFO L82 PathProgramCache]: Analyzing trace with hash -164095139, now seen corresponding path program 4 times [2020-09-16 14:06:19,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:19,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536589571] [2020-09-16 14:06:19,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:19,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:19,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536589571] [2020-09-16 14:06:19,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:19,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-16 14:06:19,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602427651] [2020-09-16 14:06:19,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-16 14:06:19,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:19,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-16 14:06:19,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-16 14:06:19,262 INFO L87 Difference]: Start difference. First operand 4129 states and 16616 transitions. Second operand 10 states. [2020-09-16 14:06:19,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:19,872 INFO L93 Difference]: Finished difference Result 5374 states and 21882 transitions. [2020-09-16 14:06:19,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 14:06:19,874 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-09-16 14:06:19,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:19,902 INFO L225 Difference]: With dead ends: 5374 [2020-09-16 14:06:19,903 INFO L226 Difference]: Without dead ends: 5300 [2020-09-16 14:06:19,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-09-16 14:06:19,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5300 states. [2020-09-16 14:06:20,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5300 to 4114. [2020-09-16 14:06:20,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4114 states. [2020-09-16 14:06:20,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4114 states to 4114 states and 16572 transitions. [2020-09-16 14:06:20,269 INFO L78 Accepts]: Start accepts. Automaton has 4114 states and 16572 transitions. Word has length 18 [2020-09-16 14:06:20,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:20,280 INFO L479 AbstractCegarLoop]: Abstraction has 4114 states and 16572 transitions. [2020-09-16 14:06:20,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-16 14:06:20,280 INFO L276 IsEmpty]: Start isEmpty. Operand 4114 states and 16572 transitions. [2020-09-16 14:06:20,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-16 14:06:20,283 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:20,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:20,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-16 14:06:20,283 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:20,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:20,284 INFO L82 PathProgramCache]: Analyzing trace with hash 2041625758, now seen corresponding path program 1 times [2020-09-16 14:06:20,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:20,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39952290] [2020-09-16 14:06:20,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:20,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:20,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39952290] [2020-09-16 14:06:20,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:20,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-16 14:06:20,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650642150] [2020-09-16 14:06:20,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-16 14:06:20,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:20,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-16 14:06:20,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-16 14:06:20,474 INFO L87 Difference]: Start difference. First operand 4114 states and 16572 transitions. Second operand 7 states. [2020-09-16 14:06:20,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:20,745 INFO L93 Difference]: Finished difference Result 4623 states and 18113 transitions. [2020-09-16 14:06:20,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 14:06:20,746 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-16 14:06:20,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:20,771 INFO L225 Difference]: With dead ends: 4623 [2020-09-16 14:06:20,771 INFO L226 Difference]: Without dead ends: 4623 [2020-09-16 14:06:20,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-16 14:06:20,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4623 states. [2020-09-16 14:06:20,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4623 to 4076. [2020-09-16 14:06:20,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4076 states. [2020-09-16 14:06:20,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4076 states to 4076 states and 16430 transitions. [2020-09-16 14:06:20,980 INFO L78 Accepts]: Start accepts. Automaton has 4076 states and 16430 transitions. Word has length 19 [2020-09-16 14:06:20,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:20,981 INFO L479 AbstractCegarLoop]: Abstraction has 4076 states and 16430 transitions. [2020-09-16 14:06:20,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-16 14:06:20,981 INFO L276 IsEmpty]: Start isEmpty. Operand 4076 states and 16430 transitions. [2020-09-16 14:06:20,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-16 14:06:20,986 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:20,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:20,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-16 14:06:20,987 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:20,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:20,988 INFO L82 PathProgramCache]: Analyzing trace with hash 898872146, now seen corresponding path program 1 times [2020-09-16 14:06:20,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:20,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115239934] [2020-09-16 14:06:20,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:21,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115239934] [2020-09-16 14:06:21,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:21,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-16 14:06:21,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088914432] [2020-09-16 14:06:21,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-16 14:06:21,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:21,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-16 14:06:21,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-16 14:06:21,276 INFO L87 Difference]: Start difference. First operand 4076 states and 16430 transitions. Second operand 11 states. [2020-09-16 14:06:21,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:21,941 INFO L93 Difference]: Finished difference Result 5825 states and 24230 transitions. [2020-09-16 14:06:21,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-16 14:06:21,942 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2020-09-16 14:06:21,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:21,961 INFO L225 Difference]: With dead ends: 5825 [2020-09-16 14:06:21,962 INFO L226 Difference]: Without dead ends: 5751 [2020-09-16 14:06:21,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-16 14:06:21,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5751 states. [2020-09-16 14:06:22,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5751 to 4013. [2020-09-16 14:06:22,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4013 states. [2020-09-16 14:06:22,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4013 states to 4013 states and 16198 transitions. [2020-09-16 14:06:22,133 INFO L78 Accepts]: Start accepts. Automaton has 4013 states and 16198 transitions. Word has length 19 [2020-09-16 14:06:22,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:22,133 INFO L479 AbstractCegarLoop]: Abstraction has 4013 states and 16198 transitions. [2020-09-16 14:06:22,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-16 14:06:22,133 INFO L276 IsEmpty]: Start isEmpty. Operand 4013 states and 16198 transitions. [2020-09-16 14:06:22,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-16 14:06:22,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:22,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:22,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-16 14:06:22,137 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:22,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:22,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1134272272, now seen corresponding path program 1 times [2020-09-16 14:06:22,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:22,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410722924] [2020-09-16 14:06:22,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:22,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:22,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410722924] [2020-09-16 14:06:22,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:22,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-16 14:06:22,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758023768] [2020-09-16 14:06:22,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-16 14:06:22,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:22,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-16 14:06:22,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-16 14:06:22,375 INFO L87 Difference]: Start difference. First operand 4013 states and 16198 transitions. Second operand 9 states. [2020-09-16 14:06:22,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:22,832 INFO L93 Difference]: Finished difference Result 5428 states and 21853 transitions. [2020-09-16 14:06:22,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 14:06:22,833 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-09-16 14:06:22,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:22,853 INFO L225 Difference]: With dead ends: 5428 [2020-09-16 14:06:22,853 INFO L226 Difference]: Without dead ends: 5382 [2020-09-16 14:06:22,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-09-16 14:06:22,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5382 states. [2020-09-16 14:06:22,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5382 to 4166. [2020-09-16 14:06:22,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4166 states. [2020-09-16 14:06:23,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4166 states to 4166 states and 16924 transitions. [2020-09-16 14:06:23,019 INFO L78 Accepts]: Start accepts. Automaton has 4166 states and 16924 transitions. Word has length 20 [2020-09-16 14:06:23,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:23,020 INFO L479 AbstractCegarLoop]: Abstraction has 4166 states and 16924 transitions. [2020-09-16 14:06:23,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-16 14:06:23,020 INFO L276 IsEmpty]: Start isEmpty. Operand 4166 states and 16924 transitions. [2020-09-16 14:06:23,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-16 14:06:23,024 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:23,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:23,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-16 14:06:23,025 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:23,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:23,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1058647793, now seen corresponding path program 1 times [2020-09-16 14:06:23,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:23,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763281519] [2020-09-16 14:06:23,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:23,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:23,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763281519] [2020-09-16 14:06:23,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:23,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-16 14:06:23,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350928615] [2020-09-16 14:06:23,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-16 14:06:23,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:23,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-16 14:06:23,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-16 14:06:23,191 INFO L87 Difference]: Start difference. First operand 4166 states and 16924 transitions. Second operand 9 states. [2020-09-16 14:06:23,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:23,629 INFO L93 Difference]: Finished difference Result 5500 states and 22434 transitions. [2020-09-16 14:06:23,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-16 14:06:23,629 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-09-16 14:06:23,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:23,648 INFO L225 Difference]: With dead ends: 5500 [2020-09-16 14:06:23,648 INFO L226 Difference]: Without dead ends: 5454 [2020-09-16 14:06:23,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-09-16 14:06:23,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5454 states. [2020-09-16 14:06:23,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5454 to 4012. [2020-09-16 14:06:23,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4012 states. [2020-09-16 14:06:23,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4012 states to 4012 states and 16195 transitions. [2020-09-16 14:06:23,802 INFO L78 Accepts]: Start accepts. Automaton has 4012 states and 16195 transitions. Word has length 20 [2020-09-16 14:06:23,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:23,802 INFO L479 AbstractCegarLoop]: Abstraction has 4012 states and 16195 transitions. [2020-09-16 14:06:23,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-16 14:06:23,803 INFO L276 IsEmpty]: Start isEmpty. Operand 4012 states and 16195 transitions. [2020-09-16 14:06:23,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-16 14:06:23,805 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:23,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:23,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-16 14:06:23,806 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:23,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:23,807 INFO L82 PathProgramCache]: Analyzing trace with hash 2045819536, now seen corresponding path program 2 times [2020-09-16 14:06:23,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:23,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321102648] [2020-09-16 14:06:23,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:24,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:24,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321102648] [2020-09-16 14:06:24,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:24,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-16 14:06:24,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151250935] [2020-09-16 14:06:24,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-16 14:06:24,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:24,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-16 14:06:24,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-16 14:06:24,033 INFO L87 Difference]: Start difference. First operand 4012 states and 16195 transitions. Second operand 10 states. [2020-09-16 14:06:24,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:24,556 INFO L93 Difference]: Finished difference Result 5781 states and 23394 transitions. [2020-09-16 14:06:24,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-16 14:06:24,557 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-09-16 14:06:24,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:24,578 INFO L225 Difference]: With dead ends: 5781 [2020-09-16 14:06:24,579 INFO L226 Difference]: Without dead ends: 5735 [2020-09-16 14:06:24,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-16 14:06:24,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5735 states. [2020-09-16 14:06:24,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5735 to 4148. [2020-09-16 14:06:24,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4148 states. [2020-09-16 14:06:24,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 16836 transitions. [2020-09-16 14:06:24,752 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 16836 transitions. Word has length 20 [2020-09-16 14:06:24,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:24,753 INFO L479 AbstractCegarLoop]: Abstraction has 4148 states and 16836 transitions. [2020-09-16 14:06:24,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-16 14:06:24,753 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 16836 transitions. [2020-09-16 14:06:24,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-16 14:06:24,755 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:24,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:24,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-16 14:06:24,756 INFO L427 AbstractCegarLoop]: === Iteration 15 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:24,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:24,756 INFO L82 PathProgramCache]: Analyzing trace with hash 258643217, now seen corresponding path program 2 times [2020-09-16 14:06:24,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:24,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536394789] [2020-09-16 14:06:24,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:24,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:24,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536394789] [2020-09-16 14:06:24,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:24,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-16 14:06:24,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033535778] [2020-09-16 14:06:24,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-16 14:06:24,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:24,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-16 14:06:24,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-16 14:06:24,930 INFO L87 Difference]: Start difference. First operand 4148 states and 16836 transitions. Second operand 10 states. [2020-09-16 14:06:25,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:25,476 INFO L93 Difference]: Finished difference Result 6399 states and 26032 transitions. [2020-09-16 14:06:25,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-16 14:06:25,477 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-09-16 14:06:25,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:25,505 INFO L225 Difference]: With dead ends: 6399 [2020-09-16 14:06:25,506 INFO L226 Difference]: Without dead ends: 6353 [2020-09-16 14:06:25,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-09-16 14:06:25,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6353 states. [2020-09-16 14:06:25,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6353 to 3978. [2020-09-16 14:06:25,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3978 states. [2020-09-16 14:06:25,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3978 states to 3978 states and 16074 transitions. [2020-09-16 14:06:25,686 INFO L78 Accepts]: Start accepts. Automaton has 3978 states and 16074 transitions. Word has length 20 [2020-09-16 14:06:25,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:25,687 INFO L479 AbstractCegarLoop]: Abstraction has 3978 states and 16074 transitions. [2020-09-16 14:06:25,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-16 14:06:25,687 INFO L276 IsEmpty]: Start isEmpty. Operand 3978 states and 16074 transitions. [2020-09-16 14:06:25,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-16 14:06:25,690 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:25,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:25,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-16 14:06:25,690 INFO L427 AbstractCegarLoop]: === Iteration 16 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:25,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:25,691 INFO L82 PathProgramCache]: Analyzing trace with hash 657525156, now seen corresponding path program 3 times [2020-09-16 14:06:25,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:25,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164096798] [2020-09-16 14:06:25,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:25,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:25,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164096798] [2020-09-16 14:06:25,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:25,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-16 14:06:25,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399797420] [2020-09-16 14:06:25,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-16 14:06:25,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:25,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-16 14:06:25,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-16 14:06:25,820 INFO L87 Difference]: Start difference. First operand 3978 states and 16074 transitions. Second operand 7 states. [2020-09-16 14:06:26,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:26,287 INFO L93 Difference]: Finished difference Result 6325 states and 25457 transitions. [2020-09-16 14:06:26,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-16 14:06:26,288 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-09-16 14:06:26,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:26,325 INFO L225 Difference]: With dead ends: 6325 [2020-09-16 14:06:26,326 INFO L226 Difference]: Without dead ends: 6279 [2020-09-16 14:06:26,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-16 14:06:26,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6279 states. [2020-09-16 14:06:26,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6279 to 3948. [2020-09-16 14:06:26,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3948 states. [2020-09-16 14:06:26,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 16005 transitions. [2020-09-16 14:06:26,547 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 16005 transitions. Word has length 20 [2020-09-16 14:06:26,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:26,548 INFO L479 AbstractCegarLoop]: Abstraction has 3948 states and 16005 transitions. [2020-09-16 14:06:26,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-16 14:06:26,548 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 16005 transitions. [2020-09-16 14:06:26,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-16 14:06:26,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:26,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:26,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-16 14:06:26,553 INFO L427 AbstractCegarLoop]: === Iteration 17 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:26,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:26,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1935934284, now seen corresponding path program 1 times [2020-09-16 14:06:26,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:26,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105357559] [2020-09-16 14:06:26,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:26,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:26,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105357559] [2020-09-16 14:06:26,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:26,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-16 14:06:26,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041731799] [2020-09-16 14:06:26,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 14:06:26,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:26,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 14:06:26,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-16 14:06:26,667 INFO L87 Difference]: Start difference. First operand 3948 states and 16005 transitions. Second operand 6 states. [2020-09-16 14:06:26,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:26,887 INFO L93 Difference]: Finished difference Result 4727 states and 18672 transitions. [2020-09-16 14:06:26,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 14:06:26,888 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-09-16 14:06:26,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:26,905 INFO L225 Difference]: With dead ends: 4727 [2020-09-16 14:06:26,905 INFO L226 Difference]: Without dead ends: 4652 [2020-09-16 14:06:26,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-16 14:06:26,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4652 states. [2020-09-16 14:06:27,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4652 to 4270. [2020-09-16 14:06:27,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4270 states. [2020-09-16 14:06:27,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4270 states to 4270 states and 17192 transitions. [2020-09-16 14:06:27,091 INFO L78 Accepts]: Start accepts. Automaton has 4270 states and 17192 transitions. Word has length 21 [2020-09-16 14:06:27,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:27,092 INFO L479 AbstractCegarLoop]: Abstraction has 4270 states and 17192 transitions. [2020-09-16 14:06:27,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 14:06:27,092 INFO L276 IsEmpty]: Start isEmpty. Operand 4270 states and 17192 transitions. [2020-09-16 14:06:27,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-16 14:06:27,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:27,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:27,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-16 14:06:27,096 INFO L427 AbstractCegarLoop]: === Iteration 18 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:27,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:27,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1183087759, now seen corresponding path program 1 times [2020-09-16 14:06:27,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:27,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883564135] [2020-09-16 14:06:27,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:27,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:27,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883564135] [2020-09-16 14:06:27,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:27,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-16 14:06:27,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522379311] [2020-09-16 14:06:27,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-16 14:06:27,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:27,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-16 14:06:27,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-16 14:06:27,260 INFO L87 Difference]: Start difference. First operand 4270 states and 17192 transitions. Second operand 8 states. [2020-09-16 14:06:27,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:27,463 INFO L93 Difference]: Finished difference Result 4820 states and 18862 transitions. [2020-09-16 14:06:27,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 14:06:27,464 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-09-16 14:06:27,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:27,483 INFO L225 Difference]: With dead ends: 4820 [2020-09-16 14:06:27,483 INFO L226 Difference]: Without dead ends: 4296 [2020-09-16 14:06:27,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-16 14:06:27,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4296 states. [2020-09-16 14:06:27,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4296 to 3680. [2020-09-16 14:06:27,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3680 states. [2020-09-16 14:06:27,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 14531 transitions. [2020-09-16 14:06:27,610 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 14531 transitions. Word has length 21 [2020-09-16 14:06:27,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:27,610 INFO L479 AbstractCegarLoop]: Abstraction has 3680 states and 14531 transitions. [2020-09-16 14:06:27,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-16 14:06:27,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 14531 transitions. [2020-09-16 14:06:27,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-16 14:06:27,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:27,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:27,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-16 14:06:27,615 INFO L427 AbstractCegarLoop]: === Iteration 19 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:27,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:27,615 INFO L82 PathProgramCache]: Analyzing trace with hash 558787563, now seen corresponding path program 1 times [2020-09-16 14:06:27,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:27,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888574065] [2020-09-16 14:06:27,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:27,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:27,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888574065] [2020-09-16 14:06:27,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:27,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-16 14:06:27,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335409861] [2020-09-16 14:06:27,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-16 14:06:27,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:27,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-16 14:06:27,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-16 14:06:27,837 INFO L87 Difference]: Start difference. First operand 3680 states and 14531 transitions. Second operand 11 states. [2020-09-16 14:06:28,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:28,377 INFO L93 Difference]: Finished difference Result 4556 states and 17623 transitions. [2020-09-16 14:06:28,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-16 14:06:28,378 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-16 14:06:28,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:28,392 INFO L225 Difference]: With dead ends: 4556 [2020-09-16 14:06:28,393 INFO L226 Difference]: Without dead ends: 4507 [2020-09-16 14:06:28,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-16 14:06:28,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4507 states. [2020-09-16 14:06:28,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4507 to 3330. [2020-09-16 14:06:28,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3330 states. [2020-09-16 14:06:28,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3330 states to 3330 states and 12802 transitions. [2020-09-16 14:06:28,508 INFO L78 Accepts]: Start accepts. Automaton has 3330 states and 12802 transitions. Word has length 21 [2020-09-16 14:06:28,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:28,508 INFO L479 AbstractCegarLoop]: Abstraction has 3330 states and 12802 transitions. [2020-09-16 14:06:28,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-16 14:06:28,508 INFO L276 IsEmpty]: Start isEmpty. Operand 3330 states and 12802 transitions. [2020-09-16 14:06:28,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-16 14:06:28,512 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:28,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:28,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-16 14:06:28,513 INFO L427 AbstractCegarLoop]: === Iteration 20 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:28,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:28,513 INFO L82 PathProgramCache]: Analyzing trace with hash 2087336367, now seen corresponding path program 1 times [2020-09-16 14:06:28,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:28,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744270981] [2020-09-16 14:06:28,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:28,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:28,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744270981] [2020-09-16 14:06:28,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:28,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-16 14:06:28,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926481991] [2020-09-16 14:06:28,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-16 14:06:28,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:28,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-16 14:06:28,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-16 14:06:28,773 INFO L87 Difference]: Start difference. First operand 3330 states and 12802 transitions. Second operand 12 states. [2020-09-16 14:06:29,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:29,220 INFO L93 Difference]: Finished difference Result 3991 states and 15112 transitions. [2020-09-16 14:06:29,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-16 14:06:29,221 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2020-09-16 14:06:29,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:29,232 INFO L225 Difference]: With dead ends: 3991 [2020-09-16 14:06:29,232 INFO L226 Difference]: Without dead ends: 3835 [2020-09-16 14:06:29,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-09-16 14:06:29,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3835 states. [2020-09-16 14:06:29,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3835 to 2831. [2020-09-16 14:06:29,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2831 states. [2020-09-16 14:06:29,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2831 states to 2831 states and 10625 transitions. [2020-09-16 14:06:29,330 INFO L78 Accepts]: Start accepts. Automaton has 2831 states and 10625 transitions. Word has length 21 [2020-09-16 14:06:29,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:29,330 INFO L479 AbstractCegarLoop]: Abstraction has 2831 states and 10625 transitions. [2020-09-16 14:06:29,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-16 14:06:29,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2831 states and 10625 transitions. [2020-09-16 14:06:29,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-16 14:06:29,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:29,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:29,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-16 14:06:29,335 INFO L427 AbstractCegarLoop]: === Iteration 21 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:29,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:29,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1396456954, now seen corresponding path program 1 times [2020-09-16 14:06:29,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:29,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170502685] [2020-09-16 14:06:29,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:29,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170502685] [2020-09-16 14:06:29,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:29,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-16 14:06:29,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151205617] [2020-09-16 14:06:29,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-16 14:06:29,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:29,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-16 14:06:29,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-16 14:06:29,463 INFO L87 Difference]: Start difference. First operand 2831 states and 10625 transitions. Second operand 7 states. [2020-09-16 14:06:29,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:29,696 INFO L93 Difference]: Finished difference Result 3550 states and 13085 transitions. [2020-09-16 14:06:29,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-16 14:06:29,697 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-09-16 14:06:29,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:29,708 INFO L225 Difference]: With dead ends: 3550 [2020-09-16 14:06:29,708 INFO L226 Difference]: Without dead ends: 3490 [2020-09-16 14:06:29,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-16 14:06:29,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3490 states. [2020-09-16 14:06:29,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3490 to 2828. [2020-09-16 14:06:29,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2828 states. [2020-09-16 14:06:29,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 10620 transitions. [2020-09-16 14:06:29,785 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 10620 transitions. Word has length 22 [2020-09-16 14:06:29,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:29,785 INFO L479 AbstractCegarLoop]: Abstraction has 2828 states and 10620 transitions. [2020-09-16 14:06:29,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-16 14:06:29,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 10620 transitions. [2020-09-16 14:06:29,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-16 14:06:29,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:29,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:29,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-16 14:06:29,789 INFO L427 AbstractCegarLoop]: === Iteration 22 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:29,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:29,790 INFO L82 PathProgramCache]: Analyzing trace with hash 644682778, now seen corresponding path program 2 times [2020-09-16 14:06:29,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:29,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56972701] [2020-09-16 14:06:29,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:29,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:29,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56972701] [2020-09-16 14:06:29,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:29,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-16 14:06:29,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645958323] [2020-09-16 14:06:29,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-16 14:06:29,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:29,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-16 14:06:29,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-16 14:06:29,970 INFO L87 Difference]: Start difference. First operand 2828 states and 10620 transitions. Second operand 8 states. [2020-09-16 14:06:30,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:30,335 INFO L93 Difference]: Finished difference Result 3540 states and 13065 transitions. [2020-09-16 14:06:30,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-16 14:06:30,336 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-09-16 14:06:30,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:30,347 INFO L225 Difference]: With dead ends: 3540 [2020-09-16 14:06:30,347 INFO L226 Difference]: Without dead ends: 3480 [2020-09-16 14:06:30,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-16 14:06:30,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2020-09-16 14:06:30,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 2822. [2020-09-16 14:06:30,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2822 states. [2020-09-16 14:06:30,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 10606 transitions. [2020-09-16 14:06:30,407 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 10606 transitions. Word has length 22 [2020-09-16 14:06:30,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:30,408 INFO L479 AbstractCegarLoop]: Abstraction has 2822 states and 10606 transitions. [2020-09-16 14:06:30,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-16 14:06:30,408 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 10606 transitions. [2020-09-16 14:06:30,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-16 14:06:30,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:30,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:30,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-16 14:06:30,412 INFO L427 AbstractCegarLoop]: === Iteration 23 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:30,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:30,413 INFO L82 PathProgramCache]: Analyzing trace with hash -787433364, now seen corresponding path program 3 times [2020-09-16 14:06:30,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:30,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083472172] [2020-09-16 14:06:30,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:30,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:30,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083472172] [2020-09-16 14:06:30,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:30,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-16 14:06:30,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429170931] [2020-09-16 14:06:30,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-16 14:06:30,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:30,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-16 14:06:30,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-16 14:06:30,572 INFO L87 Difference]: Start difference. First operand 2822 states and 10606 transitions. Second operand 9 states. [2020-09-16 14:06:30,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:30,962 INFO L93 Difference]: Finished difference Result 3525 states and 13034 transitions. [2020-09-16 14:06:30,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 14:06:30,963 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-09-16 14:06:30,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:30,973 INFO L225 Difference]: With dead ends: 3525 [2020-09-16 14:06:30,974 INFO L226 Difference]: Without dead ends: 3465 [2020-09-16 14:06:30,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-09-16 14:06:30,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2020-09-16 14:06:31,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 2822. [2020-09-16 14:06:31,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2822 states. [2020-09-16 14:06:31,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 10606 transitions. [2020-09-16 14:06:31,038 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 10606 transitions. Word has length 22 [2020-09-16 14:06:31,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:31,038 INFO L479 AbstractCegarLoop]: Abstraction has 2822 states and 10606 transitions. [2020-09-16 14:06:31,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-16 14:06:31,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 10606 transitions. [2020-09-16 14:06:31,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-16 14:06:31,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:31,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:31,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-16 14:06:31,042 INFO L427 AbstractCegarLoop]: === Iteration 24 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:31,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:31,043 INFO L82 PathProgramCache]: Analyzing trace with hash -270857424, now seen corresponding path program 4 times [2020-09-16 14:06:31,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:31,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184646703] [2020-09-16 14:06:31,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:31,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:31,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184646703] [2020-09-16 14:06:31,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:31,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-16 14:06:31,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512235447] [2020-09-16 14:06:31,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-16 14:06:31,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:31,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-16 14:06:31,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-16 14:06:31,260 INFO L87 Difference]: Start difference. First operand 2822 states and 10606 transitions. Second operand 11 states. [2020-09-16 14:06:31,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:31,771 INFO L93 Difference]: Finished difference Result 3740 states and 13820 transitions. [2020-09-16 14:06:31,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 14:06:31,772 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-09-16 14:06:31,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:31,781 INFO L225 Difference]: With dead ends: 3740 [2020-09-16 14:06:31,781 INFO L226 Difference]: Without dead ends: 3680 [2020-09-16 14:06:31,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-09-16 14:06:31,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3680 states. [2020-09-16 14:06:31,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3680 to 2822. [2020-09-16 14:06:31,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2822 states. [2020-09-16 14:06:31,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 10603 transitions. [2020-09-16 14:06:31,840 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 10603 transitions. Word has length 22 [2020-09-16 14:06:31,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:31,841 INFO L479 AbstractCegarLoop]: Abstraction has 2822 states and 10603 transitions. [2020-09-16 14:06:31,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-16 14:06:31,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 10603 transitions. [2020-09-16 14:06:31,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-16 14:06:31,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:31,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:31,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-16 14:06:31,844 INFO L427 AbstractCegarLoop]: === Iteration 25 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:31,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:31,845 INFO L82 PathProgramCache]: Analyzing trace with hash -503603988, now seen corresponding path program 5 times [2020-09-16 14:06:31,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:31,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937484304] [2020-09-16 14:06:31,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:31,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:31,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937484304] [2020-09-16 14:06:31,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:31,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-16 14:06:31,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993683665] [2020-09-16 14:06:31,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-16 14:06:31,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:31,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-16 14:06:31,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-16 14:06:31,984 INFO L87 Difference]: Start difference. First operand 2822 states and 10603 transitions. Second operand 9 states. [2020-09-16 14:06:32,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:32,327 INFO L93 Difference]: Finished difference Result 4237 states and 15414 transitions. [2020-09-16 14:06:32,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-16 14:06:32,327 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-09-16 14:06:32,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:32,340 INFO L225 Difference]: With dead ends: 4237 [2020-09-16 14:06:32,340 INFO L226 Difference]: Without dead ends: 4177 [2020-09-16 14:06:32,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-09-16 14:06:32,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4177 states. [2020-09-16 14:06:32,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4177 to 2670. [2020-09-16 14:06:32,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2670 states. [2020-09-16 14:06:32,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 9904 transitions. [2020-09-16 14:06:32,404 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 9904 transitions. Word has length 22 [2020-09-16 14:06:32,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:32,404 INFO L479 AbstractCegarLoop]: Abstraction has 2670 states and 9904 transitions. [2020-09-16 14:06:32,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-16 14:06:32,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 9904 transitions. [2020-09-16 14:06:32,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-16 14:06:32,407 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:32,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:32,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-16 14:06:32,407 INFO L427 AbstractCegarLoop]: === Iteration 26 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:32,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:32,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1684489160, now seen corresponding path program 1 times [2020-09-16 14:06:32,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:32,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20219980] [2020-09-16 14:06:32,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:32,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:32,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20219980] [2020-09-16 14:06:32,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:32,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-16 14:06:32,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656948311] [2020-09-16 14:06:32,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-16 14:06:32,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:32,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-16 14:06:32,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-16 14:06:32,680 INFO L87 Difference]: Start difference. First operand 2670 states and 9904 transitions. Second operand 12 states. [2020-09-16 14:06:33,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:33,117 INFO L93 Difference]: Finished difference Result 3103 states and 11113 transitions. [2020-09-16 14:06:33,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-16 14:06:33,118 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-16 14:06:33,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:33,131 INFO L225 Difference]: With dead ends: 3103 [2020-09-16 14:06:33,131 INFO L226 Difference]: Without dead ends: 3007 [2020-09-16 14:06:33,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-09-16 14:06:33,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2020-09-16 14:06:33,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 2170. [2020-09-16 14:06:33,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2170 states. [2020-09-16 14:06:33,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2170 states to 2170 states and 7789 transitions. [2020-09-16 14:06:33,216 INFO L78 Accepts]: Start accepts. Automaton has 2170 states and 7789 transitions. Word has length 23 [2020-09-16 14:06:33,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:33,216 INFO L479 AbstractCegarLoop]: Abstraction has 2170 states and 7789 transitions. [2020-09-16 14:06:33,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-16 14:06:33,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2170 states and 7789 transitions. [2020-09-16 14:06:33,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-16 14:06:33,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:33,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:33,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-16 14:06:33,222 INFO L427 AbstractCegarLoop]: === Iteration 27 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:33,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:33,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1357008819, now seen corresponding path program 1 times [2020-09-16 14:06:33,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:33,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322892988] [2020-09-16 14:06:33,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:33,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:33,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322892988] [2020-09-16 14:06:33,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:33,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-16 14:06:33,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742507608] [2020-09-16 14:06:33,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-16 14:06:33,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:33,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-16 14:06:33,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-16 14:06:33,452 INFO L87 Difference]: Start difference. First operand 2170 states and 7789 transitions. Second operand 10 states. [2020-09-16 14:06:34,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:34,038 INFO L93 Difference]: Finished difference Result 3115 states and 11153 transitions. [2020-09-16 14:06:34,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 14:06:34,039 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-09-16 14:06:34,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:34,054 INFO L225 Difference]: With dead ends: 3115 [2020-09-16 14:06:34,055 INFO L226 Difference]: Without dead ends: 3058 [2020-09-16 14:06:34,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-09-16 14:06:34,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2020-09-16 14:06:34,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 2130. [2020-09-16 14:06:34,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2130 states. [2020-09-16 14:06:34,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2130 states to 2130 states and 7633 transitions. [2020-09-16 14:06:34,153 INFO L78 Accepts]: Start accepts. Automaton has 2130 states and 7633 transitions. Word has length 23 [2020-09-16 14:06:34,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:34,154 INFO L479 AbstractCegarLoop]: Abstraction has 2130 states and 7633 transitions. [2020-09-16 14:06:34,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-16 14:06:34,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2130 states and 7633 transitions. [2020-09-16 14:06:34,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-16 14:06:34,159 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:34,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:34,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-09-16 14:06:34,160 INFO L427 AbstractCegarLoop]: === Iteration 28 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:34,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:34,160 INFO L82 PathProgramCache]: Analyzing trace with hash -840432879, now seen corresponding path program 2 times [2020-09-16 14:06:34,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:34,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57163378] [2020-09-16 14:06:34,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:34,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:34,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57163378] [2020-09-16 14:06:34,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:34,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-16 14:06:34,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518611251] [2020-09-16 14:06:34,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-16 14:06:34,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:34,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-16 14:06:34,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-16 14:06:34,483 INFO L87 Difference]: Start difference. First operand 2130 states and 7633 transitions. Second operand 12 states. [2020-09-16 14:06:34,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:34,900 INFO L93 Difference]: Finished difference Result 2799 states and 9853 transitions. [2020-09-16 14:06:34,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-16 14:06:34,901 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-16 14:06:34,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:34,908 INFO L225 Difference]: With dead ends: 2799 [2020-09-16 14:06:34,908 INFO L226 Difference]: Without dead ends: 2682 [2020-09-16 14:06:34,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-16 14:06:34,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2020-09-16 14:06:34,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 1794. [2020-09-16 14:06:34,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1794 states. [2020-09-16 14:06:34,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 6287 transitions. [2020-09-16 14:06:34,940 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 6287 transitions. Word has length 23 [2020-09-16 14:06:34,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:34,941 INFO L479 AbstractCegarLoop]: Abstraction has 1794 states and 6287 transitions. [2020-09-16 14:06:34,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-16 14:06:34,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 6287 transitions. [2020-09-16 14:06:34,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-16 14:06:34,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:34,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:34,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-09-16 14:06:34,943 INFO L427 AbstractCegarLoop]: === Iteration 29 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:34,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:34,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1309010247, now seen corresponding path program 1 times [2020-09-16 14:06:34,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:34,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5066709] [2020-09-16 14:06:34,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:35,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5066709] [2020-09-16 14:06:35,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:35,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-16 14:06:35,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70223202] [2020-09-16 14:06:35,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 14:06:35,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:35,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 14:06:35,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-16 14:06:35,019 INFO L87 Difference]: Start difference. First operand 1794 states and 6287 transitions. Second operand 6 states. [2020-09-16 14:06:35,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:35,236 INFO L93 Difference]: Finished difference Result 2291 states and 7723 transitions. [2020-09-16 14:06:35,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 14:06:35,237 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-16 14:06:35,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:35,243 INFO L225 Difference]: With dead ends: 2291 [2020-09-16 14:06:35,243 INFO L226 Difference]: Without dead ends: 2227 [2020-09-16 14:06:35,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-16 14:06:35,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2020-09-16 14:06:35,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 2106. [2020-09-16 14:06:35,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2106 states. [2020-09-16 14:06:35,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 7279 transitions. [2020-09-16 14:06:35,284 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 7279 transitions. Word has length 24 [2020-09-16 14:06:35,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:35,285 INFO L479 AbstractCegarLoop]: Abstraction has 2106 states and 7279 transitions. [2020-09-16 14:06:35,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 14:06:35,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 7279 transitions. [2020-09-16 14:06:35,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-16 14:06:35,288 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:35,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:35,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-16 14:06:35,289 INFO L427 AbstractCegarLoop]: === Iteration 30 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:35,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:35,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1793125216, now seen corresponding path program 1 times [2020-09-16 14:06:35,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:35,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128714644] [2020-09-16 14:06:35,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:35,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:35,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128714644] [2020-09-16 14:06:35,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:35,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-16 14:06:35,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737022010] [2020-09-16 14:06:35,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-16 14:06:35,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:35,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-16 14:06:35,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-16 14:06:35,459 INFO L87 Difference]: Start difference. First operand 2106 states and 7279 transitions. Second operand 9 states. [2020-09-16 14:06:35,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:35,833 INFO L93 Difference]: Finished difference Result 2954 states and 10228 transitions. [2020-09-16 14:06:35,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-16 14:06:35,834 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-09-16 14:06:35,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:35,844 INFO L225 Difference]: With dead ends: 2954 [2020-09-16 14:06:35,845 INFO L226 Difference]: Without dead ends: 2930 [2020-09-16 14:06:35,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-09-16 14:06:35,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-09-16 14:06:35,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 2105. [2020-09-16 14:06:35,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2105 states. [2020-09-16 14:06:35,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2105 states to 2105 states and 7278 transitions. [2020-09-16 14:06:35,912 INFO L78 Accepts]: Start accepts. Automaton has 2105 states and 7278 transitions. Word has length 24 [2020-09-16 14:06:35,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:35,912 INFO L479 AbstractCegarLoop]: Abstraction has 2105 states and 7278 transitions. [2020-09-16 14:06:35,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-16 14:06:35,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2105 states and 7278 transitions. [2020-09-16 14:06:35,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-16 14:06:35,915 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:35,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:35,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-16 14:06:35,916 INFO L427 AbstractCegarLoop]: === Iteration 31 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:35,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:35,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1041351040, now seen corresponding path program 2 times [2020-09-16 14:06:35,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:35,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780754355] [2020-09-16 14:06:35,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:36,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:36,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780754355] [2020-09-16 14:06:36,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:36,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-16 14:06:36,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47633487] [2020-09-16 14:06:36,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-16 14:06:36,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:36,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-16 14:06:36,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-16 14:06:36,092 INFO L87 Difference]: Start difference. First operand 2105 states and 7278 transitions. Second operand 10 states. [2020-09-16 14:06:36,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:36,473 INFO L93 Difference]: Finished difference Result 2941 states and 10205 transitions. [2020-09-16 14:06:36,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-16 14:06:36,474 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-09-16 14:06:36,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:36,481 INFO L225 Difference]: With dead ends: 2941 [2020-09-16 14:06:36,482 INFO L226 Difference]: Without dead ends: 2917 [2020-09-16 14:06:36,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-09-16 14:06:36,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-09-16 14:06:36,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2102. [2020-09-16 14:06:36,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2102 states. [2020-09-16 14:06:36,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 7274 transitions. [2020-09-16 14:06:36,523 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 7274 transitions. Word has length 24 [2020-09-16 14:06:36,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:36,523 INFO L479 AbstractCegarLoop]: Abstraction has 2102 states and 7274 transitions. [2020-09-16 14:06:36,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-16 14:06:36,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 7274 transitions. [2020-09-16 14:06:36,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-16 14:06:36,525 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:36,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:36,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-16 14:06:36,526 INFO L427 AbstractCegarLoop]: === Iteration 32 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:36,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:36,526 INFO L82 PathProgramCache]: Analyzing trace with hash -106935726, now seen corresponding path program 3 times [2020-09-16 14:06:36,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:36,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107446472] [2020-09-16 14:06:36,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:36,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:36,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107446472] [2020-09-16 14:06:36,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:36,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-16 14:06:36,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580695384] [2020-09-16 14:06:36,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-16 14:06:36,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:36,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-16 14:06:36,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-16 14:06:36,763 INFO L87 Difference]: Start difference. First operand 2102 states and 7274 transitions. Second operand 11 states. [2020-09-16 14:06:37,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:37,224 INFO L93 Difference]: Finished difference Result 3197 states and 11098 transitions. [2020-09-16 14:06:37,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-16 14:06:37,225 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2020-09-16 14:06:37,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:37,235 INFO L225 Difference]: With dead ends: 3197 [2020-09-16 14:06:37,235 INFO L226 Difference]: Without dead ends: 3173 [2020-09-16 14:06:37,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-09-16 14:06:37,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3173 states. [2020-09-16 14:06:37,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3173 to 1742. [2020-09-16 14:06:37,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1742 states. [2020-09-16 14:06:37,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1742 states to 1742 states and 5952 transitions. [2020-09-16 14:06:37,326 INFO L78 Accepts]: Start accepts. Automaton has 1742 states and 5952 transitions. Word has length 24 [2020-09-16 14:06:37,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:37,327 INFO L479 AbstractCegarLoop]: Abstraction has 1742 states and 5952 transitions. [2020-09-16 14:06:37,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-16 14:06:37,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1742 states and 5952 transitions. [2020-09-16 14:06:37,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-16 14:06:37,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:37,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:37,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-16 14:06:37,331 INFO L427 AbstractCegarLoop]: === Iteration 33 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:37,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:37,332 INFO L82 PathProgramCache]: Analyzing trace with hash -408101783, now seen corresponding path program 2 times [2020-09-16 14:06:37,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:37,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210532520] [2020-09-16 14:06:37,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:37,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:37,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210532520] [2020-09-16 14:06:37,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:37,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-16 14:06:37,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108250576] [2020-09-16 14:06:37,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-16 14:06:37,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:37,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-16 14:06:37,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-16 14:06:37,482 INFO L87 Difference]: Start difference. First operand 1742 states and 5952 transitions. Second operand 7 states. [2020-09-16 14:06:37,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:37,704 INFO L93 Difference]: Finished difference Result 2236 states and 7383 transitions. [2020-09-16 14:06:37,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-16 14:06:37,705 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-16 14:06:37,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:37,712 INFO L225 Difference]: With dead ends: 2236 [2020-09-16 14:06:37,712 INFO L226 Difference]: Without dead ends: 2172 [2020-09-16 14:06:37,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-16 14:06:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2020-09-16 14:06:37,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 1739. [2020-09-16 14:06:37,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1739 states. [2020-09-16 14:06:37,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 5947 transitions. [2020-09-16 14:06:37,749 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 5947 transitions. Word has length 24 [2020-09-16 14:06:37,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:37,749 INFO L479 AbstractCegarLoop]: Abstraction has 1739 states and 5947 transitions. [2020-09-16 14:06:37,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-16 14:06:37,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 5947 transitions. [2020-09-16 14:06:37,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-16 14:06:37,752 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:37,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:37,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-16 14:06:37,753 INFO L427 AbstractCegarLoop]: === Iteration 34 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:37,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:37,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1308579191, now seen corresponding path program 3 times [2020-09-16 14:06:37,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:37,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925790790] [2020-09-16 14:06:37,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:37,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925790790] [2020-09-16 14:06:37,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:37,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-16 14:06:37,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963444224] [2020-09-16 14:06:37,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-16 14:06:37,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:37,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-16 14:06:37,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-16 14:06:37,891 INFO L87 Difference]: Start difference. First operand 1739 states and 5947 transitions. Second operand 8 states. [2020-09-16 14:06:38,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:38,186 INFO L93 Difference]: Finished difference Result 2226 states and 7363 transitions. [2020-09-16 14:06:38,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-16 14:06:38,186 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-09-16 14:06:38,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:38,193 INFO L225 Difference]: With dead ends: 2226 [2020-09-16 14:06:38,193 INFO L226 Difference]: Without dead ends: 2162 [2020-09-16 14:06:38,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-16 14:06:38,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2162 states. [2020-09-16 14:06:38,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2162 to 1733. [2020-09-16 14:06:38,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2020-09-16 14:06:38,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 5933 transitions. [2020-09-16 14:06:38,234 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 5933 transitions. Word has length 24 [2020-09-16 14:06:38,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:38,234 INFO L479 AbstractCegarLoop]: Abstraction has 1733 states and 5933 transitions. [2020-09-16 14:06:38,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-16 14:06:38,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 5933 transitions. [2020-09-16 14:06:38,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-16 14:06:38,237 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:38,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:38,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-09-16 14:06:38,237 INFO L427 AbstractCegarLoop]: === Iteration 35 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:38,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:38,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1370549309, now seen corresponding path program 4 times [2020-09-16 14:06:38,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:38,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481327474] [2020-09-16 14:06:38,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:38,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:38,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481327474] [2020-09-16 14:06:38,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:38,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-16 14:06:38,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012968194] [2020-09-16 14:06:38,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-16 14:06:38,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:38,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-16 14:06:38,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-16 14:06:38,478 INFO L87 Difference]: Start difference. First operand 1733 states and 5933 transitions. Second operand 10 states. [2020-09-16 14:06:38,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:38,799 INFO L93 Difference]: Finished difference Result 2175 states and 7230 transitions. [2020-09-16 14:06:38,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 14:06:38,800 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-09-16 14:06:38,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:38,807 INFO L225 Difference]: With dead ends: 2175 [2020-09-16 14:06:38,807 INFO L226 Difference]: Without dead ends: 2111 [2020-09-16 14:06:38,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2020-09-16 14:06:38,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2111 states. [2020-09-16 14:06:38,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2111 to 1733. [2020-09-16 14:06:38,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2020-09-16 14:06:38,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 5933 transitions. [2020-09-16 14:06:38,845 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 5933 transitions. Word has length 24 [2020-09-16 14:06:38,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:38,845 INFO L479 AbstractCegarLoop]: Abstraction has 1733 states and 5933 transitions. [2020-09-16 14:06:38,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-16 14:06:38,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 5933 transitions. [2020-09-16 14:06:38,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-16 14:06:38,850 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:38,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:38,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-09-16 14:06:38,850 INFO L427 AbstractCegarLoop]: === Iteration 36 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:38,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:38,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1607134461, now seen corresponding path program 5 times [2020-09-16 14:06:38,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:38,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853228977] [2020-09-16 14:06:38,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:39,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:39,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853228977] [2020-09-16 14:06:39,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:39,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-16 14:06:39,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587881202] [2020-09-16 14:06:39,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-16 14:06:39,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:39,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-16 14:06:39,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-16 14:06:39,146 INFO L87 Difference]: Start difference. First operand 1733 states and 5933 transitions. Second operand 12 states. [2020-09-16 14:06:39,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:39,588 INFO L93 Difference]: Finished difference Result 2400 states and 7955 transitions. [2020-09-16 14:06:39,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-16 14:06:39,589 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2020-09-16 14:06:39,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:39,596 INFO L225 Difference]: With dead ends: 2400 [2020-09-16 14:06:39,596 INFO L226 Difference]: Without dead ends: 2272 [2020-09-16 14:06:39,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-09-16 14:06:39,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2020-09-16 14:06:39,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 1669. [2020-09-16 14:06:39,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1669 states. [2020-09-16 14:06:39,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 5719 transitions. [2020-09-16 14:06:39,652 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 5719 transitions. Word has length 24 [2020-09-16 14:06:39,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:39,652 INFO L479 AbstractCegarLoop]: Abstraction has 1669 states and 5719 transitions. [2020-09-16 14:06:39,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-16 14:06:39,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 5719 transitions. [2020-09-16 14:06:39,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-16 14:06:39,656 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:39,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:39,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-09-16 14:06:39,657 INFO L427 AbstractCegarLoop]: === Iteration 37 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:39,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:39,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1497656527, now seen corresponding path program 6 times [2020-09-16 14:06:39,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:39,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652705622] [2020-09-16 14:06:39,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:39,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:39,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652705622] [2020-09-16 14:06:39,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:39,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-16 14:06:39,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35751864] [2020-09-16 14:06:39,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-16 14:06:39,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:39,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-16 14:06:39,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-16 14:06:39,859 INFO L87 Difference]: Start difference. First operand 1669 states and 5719 transitions. Second operand 10 states. [2020-09-16 14:06:40,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:40,315 INFO L93 Difference]: Finished difference Result 2576 states and 8317 transitions. [2020-09-16 14:06:40,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-16 14:06:40,316 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-09-16 14:06:40,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:40,323 INFO L225 Difference]: With dead ends: 2576 [2020-09-16 14:06:40,324 INFO L226 Difference]: Without dead ends: 2512 [2020-09-16 14:06:40,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-09-16 14:06:40,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2512 states. [2020-09-16 14:06:40,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2512 to 1489. [2020-09-16 14:06:40,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1489 states. [2020-09-16 14:06:40,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 5033 transitions. [2020-09-16 14:06:40,367 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 5033 transitions. Word has length 24 [2020-09-16 14:06:40,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:40,368 INFO L479 AbstractCegarLoop]: Abstraction has 1489 states and 5033 transitions. [2020-09-16 14:06:40,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-16 14:06:40,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 5033 transitions. [2020-09-16 14:06:40,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-16 14:06:40,371 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:40,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:40,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-09-16 14:06:40,372 INFO L427 AbstractCegarLoop]: === Iteration 38 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:40,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:40,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1461991345, now seen corresponding path program 1 times [2020-09-16 14:06:40,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:40,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459003311] [2020-09-16 14:06:40,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:40,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:40,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459003311] [2020-09-16 14:06:40,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:40,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-16 14:06:40,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715925433] [2020-09-16 14:06:40,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-16 14:06:40,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:40,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-16 14:06:40,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-16 14:06:40,541 INFO L87 Difference]: Start difference. First operand 1489 states and 5033 transitions. Second operand 9 states. [2020-09-16 14:06:40,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:40,831 INFO L93 Difference]: Finished difference Result 2106 states and 6852 transitions. [2020-09-16 14:06:40,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-16 14:06:40,832 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-09-16 14:06:40,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:40,838 INFO L225 Difference]: With dead ends: 2106 [2020-09-16 14:06:40,838 INFO L226 Difference]: Without dead ends: 2084 [2020-09-16 14:06:40,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-09-16 14:06:40,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2020-09-16 14:06:40,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 1488. [2020-09-16 14:06:40,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2020-09-16 14:06:40,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 5032 transitions. [2020-09-16 14:06:40,874 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 5032 transitions. Word has length 26 [2020-09-16 14:06:40,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:40,874 INFO L479 AbstractCegarLoop]: Abstraction has 1488 states and 5032 transitions. [2020-09-16 14:06:40,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-16 14:06:40,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 5032 transitions. [2020-09-16 14:06:40,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-16 14:06:40,878 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:40,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:40,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-09-16 14:06:40,878 INFO L427 AbstractCegarLoop]: === Iteration 39 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:40,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:40,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1932498543, now seen corresponding path program 2 times [2020-09-16 14:06:40,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:40,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885142651] [2020-09-16 14:06:40,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:41,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:41,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885142651] [2020-09-16 14:06:41,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:41,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-16 14:06:41,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547468669] [2020-09-16 14:06:41,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-16 14:06:41,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:41,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-16 14:06:41,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-16 14:06:41,148 INFO L87 Difference]: Start difference. First operand 1488 states and 5032 transitions. Second operand 10 states. [2020-09-16 14:06:41,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:41,489 INFO L93 Difference]: Finished difference Result 2093 states and 6829 transitions. [2020-09-16 14:06:41,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-16 14:06:41,490 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-09-16 14:06:41,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:41,495 INFO L225 Difference]: With dead ends: 2093 [2020-09-16 14:06:41,495 INFO L226 Difference]: Without dead ends: 2071 [2020-09-16 14:06:41,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-09-16 14:06:41,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2020-09-16 14:06:41,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1485. [2020-09-16 14:06:41,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1485 states. [2020-09-16 14:06:41,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 5028 transitions. [2020-09-16 14:06:41,534 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 5028 transitions. Word has length 26 [2020-09-16 14:06:41,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:41,534 INFO L479 AbstractCegarLoop]: Abstraction has 1485 states and 5028 transitions. [2020-09-16 14:06:41,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-16 14:06:41,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 5028 transitions. [2020-09-16 14:06:41,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-16 14:06:41,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:41,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:41,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-09-16 14:06:41,537 INFO L427 AbstractCegarLoop]: === Iteration 40 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:41,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:41,538 INFO L82 PathProgramCache]: Analyzing trace with hash 443766965, now seen corresponding path program 3 times [2020-09-16 14:06:41,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:41,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393439417] [2020-09-16 14:06:41,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:41,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:41,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393439417] [2020-09-16 14:06:41,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:41,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-16 14:06:41,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746334711] [2020-09-16 14:06:41,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-16 14:06:41,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:41,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-16 14:06:41,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-16 14:06:41,848 INFO L87 Difference]: Start difference. First operand 1485 states and 5028 transitions. Second operand 12 states. [2020-09-16 14:06:42,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:42,354 INFO L93 Difference]: Finished difference Result 1538 states and 4992 transitions. [2020-09-16 14:06:42,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-16 14:06:42,355 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-09-16 14:06:42,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:42,360 INFO L225 Difference]: With dead ends: 1538 [2020-09-16 14:06:42,361 INFO L226 Difference]: Without dead ends: 1494 [2020-09-16 14:06:42,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2020-09-16 14:06:42,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2020-09-16 14:06:42,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 885. [2020-09-16 14:06:42,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 885 states. [2020-09-16 14:06:42,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 3033 transitions. [2020-09-16 14:06:42,383 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 3033 transitions. Word has length 26 [2020-09-16 14:06:42,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:42,383 INFO L479 AbstractCegarLoop]: Abstraction has 885 states and 3033 transitions. [2020-09-16 14:06:42,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-16 14:06:42,383 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 3033 transitions. [2020-09-16 14:06:42,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-16 14:06:42,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:42,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:42,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-09-16 14:06:42,386 INFO L427 AbstractCegarLoop]: === Iteration 41 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:42,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:42,386 INFO L82 PathProgramCache]: Analyzing trace with hash -416507732, now seen corresponding path program 1 times [2020-09-16 14:06:42,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:42,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039619210] [2020-09-16 14:06:42,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:42,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:42,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039619210] [2020-09-16 14:06:42,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:42,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-16 14:06:42,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054135779] [2020-09-16 14:06:42,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-16 14:06:42,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:42,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-16 14:06:42,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-16 14:06:42,576 INFO L87 Difference]: Start difference. First operand 885 states and 3033 transitions. Second operand 8 states. [2020-09-16 14:06:42,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:42,777 INFO L93 Difference]: Finished difference Result 885 states and 3029 transitions. [2020-09-16 14:06:42,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 14:06:42,778 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-09-16 14:06:42,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:42,782 INFO L225 Difference]: With dead ends: 885 [2020-09-16 14:06:42,782 INFO L226 Difference]: Without dead ends: 879 [2020-09-16 14:06:42,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-16 14:06:42,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-09-16 14:06:42,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 879. [2020-09-16 14:06:42,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 879 states. [2020-09-16 14:06:42,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 3010 transitions. [2020-09-16 14:06:42,800 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 3010 transitions. Word has length 41 [2020-09-16 14:06:42,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:42,800 INFO L479 AbstractCegarLoop]: Abstraction has 879 states and 3010 transitions. [2020-09-16 14:06:42,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-16 14:06:42,800 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 3010 transitions. [2020-09-16 14:06:42,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-16 14:06:42,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:42,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:42,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-09-16 14:06:42,803 INFO L427 AbstractCegarLoop]: === Iteration 42 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:42,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:42,803 INFO L82 PathProgramCache]: Analyzing trace with hash 829092404, now seen corresponding path program 1 times [2020-09-16 14:06:42,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:42,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349643050] [2020-09-16 14:06:42,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:06:42,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:06:42,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349643050] [2020-09-16 14:06:42,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:06:42,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-16 14:06:42,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303585758] [2020-09-16 14:06:42,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-16 14:06:42,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:06:42,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-16 14:06:42,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-16 14:06:42,963 INFO L87 Difference]: Start difference. First operand 879 states and 3010 transitions. Second operand 8 states. [2020-09-16 14:06:43,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:06:43,185 INFO L93 Difference]: Finished difference Result 879 states and 3006 transitions. [2020-09-16 14:06:43,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 14:06:43,185 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-09-16 14:06:43,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:06:43,188 INFO L225 Difference]: With dead ends: 879 [2020-09-16 14:06:43,189 INFO L226 Difference]: Without dead ends: 819 [2020-09-16 14:06:43,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-16 14:06:43,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-09-16 14:06:43,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2020-09-16 14:06:43,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-09-16 14:06:43,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 2784 transitions. [2020-09-16 14:06:43,214 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 2784 transitions. Word has length 41 [2020-09-16 14:06:43,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:06:43,214 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 2784 transitions. [2020-09-16 14:06:43,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-16 14:06:43,215 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 2784 transitions. [2020-09-16 14:06:43,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-16 14:06:43,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:06:43,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:06:43,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-09-16 14:06:43,219 INFO L427 AbstractCegarLoop]: === Iteration 43 === [thread0Err1INUSE_VIOLATION, thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork3Err8INUSE_VIOLATION, thread0Thread1of1ForFork3Err9INUSE_VIOLATION, thread0Thread1of1ForFork3Err7INUSE_VIOLATION, thread0Thread1of1ForFork3Err6INUSE_VIOLATION, thread0Thread1of1ForFork3Err10INUSE_VIOLATION]=== [2020-09-16 14:06:43,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:06:43,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1378914744, now seen corresponding path program 1 times [2020-09-16 14:06:43,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:06:43,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831982534] [2020-09-16 14:06:43,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:06:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-16 14:06:43,260 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-16 14:06:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-16 14:06:43,305 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-16 14:06:43,366 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-16 14:06:43,367 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-16 14:06:43,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-09-16 14:06:43,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 02:06:43 BasicIcfg [2020-09-16 14:06:43,577 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 14:06:43,582 INFO L168 Benchmark]: Toolchain (without parser) took 38286.34 ms. Allocated memory was 137.9 MB in the beginning and 940.6 MB in the end (delta: 802.7 MB). Free memory was 98.8 MB in the beginning and 621.6 MB in the end (delta: -522.8 MB). Peak memory consumption was 279.9 MB. Max. memory is 7.1 GB. [2020-09-16 14:06:43,585 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-16 14:06:43,586 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1418.94 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 98.1 MB in the beginning and 123.9 MB in the end (delta: -25.8 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. [2020-09-16 14:06:43,586 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.40 ms. Allocated memory is still 202.9 MB. Free memory was 123.9 MB in the beginning and 121.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-16 14:06:43,587 INFO L168 Benchmark]: Boogie Preprocessor took 37.05 ms. Allocated memory is still 202.9 MB. Free memory was 121.8 MB in the beginning and 120.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-16 14:06:43,587 INFO L168 Benchmark]: RCFGBuilder took 723.89 ms. Allocated memory is still 202.9 MB. Free memory was 120.4 MB in the beginning and 93.3 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-09-16 14:06:43,587 INFO L168 Benchmark]: TraceAbstraction took 36003.65 ms. Allocated memory was 202.9 MB in the beginning and 940.6 MB in the end (delta: 737.7 MB). Free memory was 92.6 MB in the beginning and 621.6 MB in the end (delta: -529.0 MB). Peak memory consumption was 208.6 MB. Max. memory is 7.1 GB. [2020-09-16 14:06:43,590 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1418.94 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 98.1 MB in the beginning and 123.9 MB in the end (delta: -25.8 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 79.40 ms. Allocated memory is still 202.9 MB. Free memory was 123.9 MB in the beginning and 121.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.05 ms. Allocated memory is still 202.9 MB. Free memory was 121.8 MB in the beginning and 120.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 723.89 ms. Allocated memory is still 202.9 MB. Free memory was 120.4 MB in the beginning and 93.3 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36003.65 ms. Allocated memory was 202.9 MB in the beginning and 940.6 MB in the end (delta: 737.7 MB). Free memory was 92.6 MB in the beginning and 621.6 MB in the end (delta: -529.0 MB). Peak memory consumption was 208.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.8s, 172 ProgramPointsBefore, 101 ProgramPointsAfterwards, 243 TransitionsBefore, 173 TransitionsAfterwards, 4038 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 1507 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 9 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2242 CheckedPairsTotal, 75 TotalNumberOfCompositions - CounterExampleResult [Line: 1088]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1089] 0 char *v; [L1122] 0 pthread_t t; [L1123] FCALL, FORK 0 pthread_create(&t, 0, thread0, 0) VAL [arg={0:0}, v={0:0}] [L1107] 1 pthread_t t1, t2, t3, t4, t5; [L1108] FCALL, FORK 1 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={11:0}, t3={10:0}, t4={13:0}, t5={12:0}, v={0:0}] [L1109] 1 \read(t1) VAL [\read(t1)=0, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={11:0}, t3={10:0}, t4={13:0}, t5={12:0}, v={0:0}] [L1124] 0 \read(t) VAL [\read(t1)=0, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={11:0}, t3={10:0}, t4={13:0}, t5={12:0}, v={0:0}] [L1092] 2 v = malloc(sizeof(char)) [L1093] 2 return 0; [L1109] FCALL, JOIN 2 pthread_join(t1, 0) VAL [\read(t1)=0, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={6:0}, t1={8:0}, t2={11:0}, t3={10:0}, t4={13:0}, t5={12:0}, v={6:0}] [L1110] FCALL, FORK 1 pthread_create(&t2, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={6:0}, t1={8:0}, t2={11:0}, t3={10:0}, t4={13:0}, t5={12:0}, v={6:0}] [L1097] 3 v[0] = 'X' [L1098] 3 return 0; [L1111] FCALL, FORK 1 pthread_create(&t3, 0, thread3, 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={6:0}, t1={8:0}, t2={11:0}, t3={10:0}, t4={13:0}, t5={12:0}, v={6:0}] [L1112] FCALL, FORK 1 pthread_create(&t4, 0, thread2, 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={6:0}, t1={8:0}, t2={11:0}, t3={10:0}, t4={13:0}, t5={12:0}, v={6:0}] [L1113] FCALL, FORK 1 pthread_create(&t5, 0, thread2, 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={6:0}, t1={8:0}, t2={11:0}, t3={10:0}, t4={13:0}, t5={12:0}, v={6:0}] [L1114] 1 \read(t2) VAL [\read(t2)=1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={6:0}, t1={8:0}, t2={11:0}, t3={10:0}, t4={13:0}, t5={12:0}, v={6:0}] [L1114] FCALL, JOIN 3 pthread_join(t2, 0) VAL [\read(t2)=1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={6:0}, t1={8:0}, t2={11:0}, t3={10:0}, t4={13:0}, t5={12:0}, v={6:0}] [L1115] 1 \read(t3) VAL [\read(t3)=2, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={6:0}, t1={8:0}, t2={11:0}, t3={10:0}, t4={13:0}, t5={12:0}, v={6:0}] [L1097] 6 v[0] = 'X' [L1098] 6 return 0; [L1097] 5 v[0] = 'X' [L1098] 5 return 0; [L1102] 4 v[0] = 'Y' [L1103] 4 return 0; [L1115] FCALL, JOIN 4 pthread_join(t3, 0) VAL [\read(t3)=2, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={6:0}, t1={8:0}, t2={11:0}, t3={10:0}, t4={13:0}, t5={12:0}, v={6:0}] [L1116] 1 \read(t4) VAL [\read(t4)=3, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={6:0}, t1={8:0}, t2={11:0}, t3={10:0}, t4={13:0}, t5={12:0}, v={6:0}] [L1116] FCALL, JOIN 5 pthread_join(t4, 0) VAL [\read(t4)=3, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={6:0}, t1={8:0}, t2={11:0}, t3={10:0}, t4={13:0}, t5={12:0}, v={6:0}] [L1117] 1 \read(t5) VAL [\read(t5)=4, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={6:0}, t1={8:0}, t2={11:0}, t3={10:0}, t4={13:0}, t5={12:0}, v={6:0}] [L1117] FCALL, JOIN 6 pthread_join(t5, 0) VAL [\read(t5)=4, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={6:0}, t1={8:0}, t2={11:0}, t3={10:0}, t4={13:0}, t5={12:0}, v={6:0}] [L1118] 1 return 0; [L1118] 1 return 0; [L1118] 1 return 0; [L1118] 1 return 0; [L1118] 1 return 0; [L1118] 1 return 0; [L1124] FCALL, JOIN 1 pthread_join(t, 0) VAL [\result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={6:0}, v={6:0}] [L1125] 0 v[0] [L1088] COND TRUE 0 !expression [L1088] 0 __VERIFIER_error() VAL [\result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={6:0}, v={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 92 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 35.3s, OverallIterations: 43, TraceHistogramMax: 1, AutomataDifference: 17.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 4482 SDtfs, 7573 SDslu, 12200 SDs, 0 SdLazy, 7382 SolverSat, 970 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 505 GetRequests, 46 SyntacticMatches, 7 SemanticMatches, 452 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4270occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.1s AutomataMinimizationTime, 42 MinimizatonAttempts, 39550 StatesRemovedByMinimization, 40 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 958 NumberOfCodeBlocks, 958 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 875 ConstructedInterpolants, 0 QuantifiedInterpolants, 209371 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 42 InterpolantComputations, 42 PerfectInterpolantSequences, 0/0 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 proved your program to be incorrect! Received shutdown request...