/usr/bin/java -Xmx16000000000 -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/concurrent/pthreads/NonAtomicIncrement_2Threads.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 14:01:10,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 14:01:10,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 14:01:10,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 14:01:10,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 14:01:10,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 14:01:10,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 14:01:10,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 14:01:10,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 14:01:10,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 14:01:10,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 14:01:10,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 14:01:10,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 14:01:10,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 14:01:10,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 14:01:10,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 14:01:10,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 14:01:10,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 14:01:10,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 14:01:10,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 14:01:10,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 14:01:10,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 14:01:10,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 14:01:10,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 14:01:10,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-09 14:01:10,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 14:01:10,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 14:01:10,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 14:01:10,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 14:01:10,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 14:01:10,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 14:01:10,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 14:01:10,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 14:01:10,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 14:01:10,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 14:01:10,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 14:01:10,614 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-09 14:01:10,659 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 14:01:10,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 14:01:10,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 14:01:10,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 14:01:10,662 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 14:01:10,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 14:01:10,662 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 14:01:10,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 14:01:10,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 14:01:10,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 14:01:10,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 14:01:10,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 14:01:10,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 14:01:10,663 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 14:01:10,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 14:01:10,664 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 14:01:10,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 14:01:10,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 14:01:10,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 14:01:10,667 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 14:01:10,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 14:01:10,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 14:01:10,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 14:01:10,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 14:01:10,668 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 14:01:10,668 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-09 14:01:10,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 14:01:10,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-09 14:01:10,668 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-09 14:01:10,669 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 14:01:10,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 14:01:11,009 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 14:01:11,012 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 14:01:11,014 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 14:01:11,014 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 14:01:11,015 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c [2020-10-09 14:01:11,081 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57f6043bb/8da11b3bf5544df6ac77b0247bab9b80/FLAG06df6aef2 [2020-10-09 14:01:11,507 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 14:01:11,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c [2020-10-09 14:01:11,508 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-09 14:01:11,508 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-09 14:01:11,508 WARN L117 ultiparseSymbolTable]: System include stdbool.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-09 14:01:11,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57f6043bb/8da11b3bf5544df6ac77b0247bab9b80/FLAG06df6aef2 [2020-10-09 14:01:11,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57f6043bb/8da11b3bf5544df6ac77b0247bab9b80 [2020-10-09 14:01:11,885 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 14:01:11,888 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 14:01:11,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 14:01:11,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 14:01:11,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 14:01:11,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 02:01:11" (1/1) ... [2020-10-09 14:01:11,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a341154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:11, skipping insertion in model container [2020-10-09 14:01:11,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 02:01:11" (1/1) ... [2020-10-09 14:01:11,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 14:01:11,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 14:01:12,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 14:01:12,100 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 14:01:12,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 14:01:12,213 INFO L208 MainTranslator]: Completed translation [2020-10-09 14:01:12,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:12 WrapperNode [2020-10-09 14:01:12,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 14:01:12,215 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 14:01:12,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 14:01:12,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 14:01:12,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:12" (1/1) ... [2020-10-09 14:01:12,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:12" (1/1) ... [2020-10-09 14:01:12,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 14:01:12,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 14:01:12,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 14:01:12,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 14:01:12,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:12" (1/1) ... [2020-10-09 14:01:12,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:12" (1/1) ... [2020-10-09 14:01:12,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:12" (1/1) ... [2020-10-09 14:01:12,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:12" (1/1) ... [2020-10-09 14:01:12,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:12" (1/1) ... [2020-10-09 14:01:12,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:12" (1/1) ... [2020-10-09 14:01:12,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:12" (1/1) ... [2020-10-09 14:01:12,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 14:01:12,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 14:01:12,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 14:01:12,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 14:01:12,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 14:01:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 14:01:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 14:01:12,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 14:01:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-09 14:01:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure secondIncrement [2020-10-09 14:01:12,346 INFO L138 BoogieDeclarations]: Found implementation of procedure secondIncrement [2020-10-09 14:01:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure firstIncrement [2020-10-09 14:01:12,346 INFO L138 BoogieDeclarations]: Found implementation of procedure firstIncrement [2020-10-09 14:01:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 14:01:12,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 14:01:12,348 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 14:01:12,579 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 14:01:12,580 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-09 14:01:12,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 02:01:12 BoogieIcfgContainer [2020-10-09 14:01:12,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 14:01:12,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 14:01:12,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 14:01:12,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 14:01:12,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 02:01:11" (1/3) ... [2020-10-09 14:01:12,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2558af68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 02:01:12, skipping insertion in model container [2020-10-09 14:01:12,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:12" (2/3) ... [2020-10-09 14:01:12,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2558af68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 02:01:12, skipping insertion in model container [2020-10-09 14:01:12,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 02:01:12" (3/3) ... [2020-10-09 14:01:12,592 INFO L111 eAbstractionObserver]: Analyzing ICFG NonAtomicIncrement_2Threads.c [2020-10-09 14:01:12,603 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-09 14:01:12,604 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 14:01:12,612 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 14:01:12,613 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 14:01:12,644 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,644 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,645 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,645 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,645 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,646 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,646 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,646 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,646 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,647 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,647 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,647 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,648 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,648 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,649 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,649 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,649 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,650 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,650 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,650 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,650 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,651 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,654 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,654 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,655 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,655 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,655 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,659 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,660 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,660 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,660 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,660 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:12,683 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-09 14:01:12,705 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 14:01:12,705 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 14:01:12,705 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 14:01:12,705 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 14:01:12,706 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 14:01:12,706 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 14:01:12,706 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 14:01:12,706 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 14:01:12,720 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 14:01:12,722 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 56 transitions, 134 flow [2020-10-09 14:01:12,725 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 56 transitions, 134 flow [2020-10-09 14:01:12,727 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 56 transitions, 134 flow [2020-10-09 14:01:12,775 INFO L129 PetriNetUnfolder]: 5/56 cut-off events. [2020-10-09 14:01:12,775 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-09 14:01:12,781 INFO L80 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 56 events. 5/56 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 33. Up to 3 conditions per place. [2020-10-09 14:01:12,784 INFO L117 LiptonReduction]: Number of co-enabled transitions 528 [2020-10-09 14:01:13,533 INFO L132 LiptonReduction]: Checked pairs total: 866 [2020-10-09 14:01:13,533 INFO L134 LiptonReduction]: Total number of compositions: 34 [2020-10-09 14:01:13,540 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 24 transitions, 70 flow [2020-10-09 14:01:13,554 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 70 states. [2020-10-09 14:01:13,556 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-10-09 14:01:13,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 14:01:13,565 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:13,565 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:13,566 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:13,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:13,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1474833226, now seen corresponding path program 1 times [2020-10-09 14:01:13,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:13,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929814103] [2020-10-09 14:01:13,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:13,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:13,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929814103] [2020-10-09 14:01:13,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:01:13,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 14:01:13,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389600554] [2020-10-09 14:01:13,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 14:01:13,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:13,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 14:01:13,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 14:01:13,781 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 3 states. [2020-10-09 14:01:13,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:13,834 INFO L93 Difference]: Finished difference Result 96 states and 211 transitions. [2020-10-09 14:01:13,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 14:01:13,837 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-09 14:01:13,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:13,860 INFO L225 Difference]: With dead ends: 96 [2020-10-09 14:01:13,860 INFO L226 Difference]: Without dead ends: 95 [2020-10-09 14:01:13,862 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 14:01:13,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-09 14:01:13,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 82. [2020-10-09 14:01:13,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-09 14:01:13,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 180 transitions. [2020-10-09 14:01:13,935 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 180 transitions. Word has length 15 [2020-10-09 14:01:13,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:13,936 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 180 transitions. [2020-10-09 14:01:13,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 14:01:13,937 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 180 transitions. [2020-10-09 14:01:13,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-09 14:01:13,941 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:13,941 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:13,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-09 14:01:13,942 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:13,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:13,943 INFO L82 PathProgramCache]: Analyzing trace with hash -657301668, now seen corresponding path program 1 times [2020-10-09 14:01:13,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:13,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181161971] [2020-10-09 14:01:13,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:14,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181161971] [2020-10-09 14:01:14,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020393126] [2020-10-09 14:01:14,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:14,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-09 14:01:14,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:14,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-09 14:01:14,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-09 14:01:14,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-10-09 14:01:14,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250794284] [2020-10-09 14:01:14,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 14:01:14,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:14,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 14:01:14,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 14:01:14,200 INFO L87 Difference]: Start difference. First operand 82 states and 180 transitions. Second operand 3 states. [2020-10-09 14:01:14,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:14,234 INFO L93 Difference]: Finished difference Result 108 states and 242 transitions. [2020-10-09 14:01:14,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 14:01:14,235 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-09 14:01:14,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:14,238 INFO L225 Difference]: With dead ends: 108 [2020-10-09 14:01:14,238 INFO L226 Difference]: Without dead ends: 108 [2020-10-09 14:01:14,239 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 14:01:14,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-09 14:01:14,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 95. [2020-10-09 14:01:14,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-09 14:01:14,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 211 transitions. [2020-10-09 14:01:14,261 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 211 transitions. Word has length 17 [2020-10-09 14:01:14,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:14,262 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 211 transitions. [2020-10-09 14:01:14,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 14:01:14,262 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 211 transitions. [2020-10-09 14:01:14,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-09 14:01:14,264 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:14,264 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:14,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-09 14:01:14,479 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:14,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:14,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1653958726, now seen corresponding path program 1 times [2020-10-09 14:01:14,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:14,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116730497] [2020-10-09 14:01:14,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:14,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:14,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116730497] [2020-10-09 14:01:14,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611305638] [2020-10-09 14:01:14,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:14,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-09 14:01:14,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:14,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-09 14:01:14,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:01:14,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-09 14:01:14,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010272047] [2020-10-09 14:01:14,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-09 14:01:14,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:14,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-09 14:01:14,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-09 14:01:14,617 INFO L87 Difference]: Start difference. First operand 95 states and 211 transitions. Second operand 6 states. [2020-10-09 14:01:14,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:14,731 INFO L93 Difference]: Finished difference Result 197 states and 454 transitions. [2020-10-09 14:01:14,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 14:01:14,732 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-09 14:01:14,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:14,734 INFO L225 Difference]: With dead ends: 197 [2020-10-09 14:01:14,734 INFO L226 Difference]: Without dead ends: 197 [2020-10-09 14:01:14,735 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-09 14:01:14,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-09 14:01:14,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 159. [2020-10-09 14:01:14,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-09 14:01:14,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 363 transitions. [2020-10-09 14:01:14,750 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 363 transitions. Word has length 19 [2020-10-09 14:01:14,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:14,751 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 363 transitions. [2020-10-09 14:01:14,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-09 14:01:14,751 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 363 transitions. [2020-10-09 14:01:14,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-09 14:01:14,753 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:14,753 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:14,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:14,968 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:14,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:14,968 INFO L82 PathProgramCache]: Analyzing trace with hash 2009767926, now seen corresponding path program 2 times [2020-10-09 14:01:14,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:14,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590953314] [2020-10-09 14:01:14,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:15,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 14:01:15,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590953314] [2020-10-09 14:01:15,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712614462] [2020-10-09 14:01:15,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:15,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 14:01:15,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:01:15,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-09 14:01:15,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:15,095 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 14:01:15,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:01:15,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-09 14:01:15,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967001745] [2020-10-09 14:01:15,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-09 14:01:15,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:15,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-09 14:01:15,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-09 14:01:15,097 INFO L87 Difference]: Start difference. First operand 159 states and 363 transitions. Second operand 6 states. [2020-10-09 14:01:15,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:15,121 INFO L93 Difference]: Finished difference Result 210 states and 486 transitions. [2020-10-09 14:01:15,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 14:01:15,121 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-09 14:01:15,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:15,123 INFO L225 Difference]: With dead ends: 210 [2020-10-09 14:01:15,124 INFO L226 Difference]: Without dead ends: 210 [2020-10-09 14:01:15,124 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-09 14:01:15,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-09 14:01:15,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 193. [2020-10-09 14:01:15,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-09 14:01:15,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 445 transitions. [2020-10-09 14:01:15,137 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 445 transitions. Word has length 23 [2020-10-09 14:01:15,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:15,138 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 445 transitions. [2020-10-09 14:01:15,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-09 14:01:15,138 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 445 transitions. [2020-10-09 14:01:15,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 14:01:15,140 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:15,140 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:15,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:15,356 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:15,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:15,356 INFO L82 PathProgramCache]: Analyzing trace with hash -275132064, now seen corresponding path program 3 times [2020-10-09 14:01:15,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:15,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398445362] [2020-10-09 14:01:15,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:15,414 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 14:01:15,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398445362] [2020-10-09 14:01:15,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797539566] [2020-10-09 14:01:15,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:15,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-09 14:01:15,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:01:15,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-09 14:01:15,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:15,497 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 14:01:15,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:01:15,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-09 14:01:15,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320487008] [2020-10-09 14:01:15,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 14:01:15,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:15,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 14:01:15,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-09 14:01:15,499 INFO L87 Difference]: Start difference. First operand 193 states and 445 transitions. Second operand 7 states. [2020-10-09 14:01:15,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:15,527 INFO L93 Difference]: Finished difference Result 244 states and 568 transitions. [2020-10-09 14:01:15,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 14:01:15,528 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-09 14:01:15,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:15,529 INFO L225 Difference]: With dead ends: 244 [2020-10-09 14:01:15,530 INFO L226 Difference]: Without dead ends: 244 [2020-10-09 14:01:15,530 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-09 14:01:15,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-09 14:01:15,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 227. [2020-10-09 14:01:15,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-09 14:01:15,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 527 transitions. [2020-10-09 14:01:15,543 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 527 transitions. Word has length 25 [2020-10-09 14:01:15,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:15,543 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 527 transitions. [2020-10-09 14:01:15,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 14:01:15,544 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 527 transitions. [2020-10-09 14:01:15,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 14:01:15,545 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:15,545 INFO L421 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:15,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:15,760 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:15,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:15,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1335734198, now seen corresponding path program 4 times [2020-10-09 14:01:15,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:15,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489532216] [2020-10-09 14:01:15,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:15,829 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 14:01:15,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489532216] [2020-10-09 14:01:15,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725565768] [2020-10-09 14:01:15,830 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:15,882 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 14:01:15,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:01:15,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 14:01:15,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:15,912 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 14:01:15,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:01:15,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-09 14:01:15,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294999079] [2020-10-09 14:01:15,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 14:01:15,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:15,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 14:01:15,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-09 14:01:15,915 INFO L87 Difference]: Start difference. First operand 227 states and 527 transitions. Second operand 8 states. [2020-10-09 14:01:15,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:15,941 INFO L93 Difference]: Finished difference Result 261 states and 609 transitions. [2020-10-09 14:01:15,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 14:01:15,941 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-09 14:01:15,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:15,943 INFO L225 Difference]: With dead ends: 261 [2020-10-09 14:01:15,943 INFO L226 Difference]: Without dead ends: 261 [2020-10-09 14:01:15,944 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-09 14:01:15,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-09 14:01:15,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2020-10-09 14:01:15,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-09 14:01:15,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 609 transitions. [2020-10-09 14:01:15,954 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 609 transitions. Word has length 27 [2020-10-09 14:01:15,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:15,954 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 609 transitions. [2020-10-09 14:01:15,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 14:01:15,955 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 609 transitions. [2020-10-09 14:01:15,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 14:01:15,956 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:15,956 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:16,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-09 14:01:16,171 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:16,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:16,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1627831476, now seen corresponding path program 5 times [2020-10-09 14:01:16,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:16,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212480419] [2020-10-09 14:01:16,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-09 14:01:16,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212480419] [2020-10-09 14:01:16,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768959953] [2020-10-09 14:01:16,224 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:16,278 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-09 14:01:16,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:01:16,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-09 14:01:16,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:16,306 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-09 14:01:16,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:01:16,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-09 14:01:16,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104064025] [2020-10-09 14:01:16,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-09 14:01:16,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:16,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-09 14:01:16,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-09 14:01:16,309 INFO L87 Difference]: Start difference. First operand 261 states and 609 transitions. Second operand 6 states. [2020-10-09 14:01:16,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:16,335 INFO L93 Difference]: Finished difference Result 354 states and 834 transitions. [2020-10-09 14:01:16,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 14:01:16,336 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-09 14:01:16,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:16,338 INFO L225 Difference]: With dead ends: 354 [2020-10-09 14:01:16,339 INFO L226 Difference]: Without dead ends: 354 [2020-10-09 14:01:16,339 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-09 14:01:16,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-09 14:01:16,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 323. [2020-10-09 14:01:16,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-10-09 14:01:16,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 759 transitions. [2020-10-09 14:01:16,352 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 759 transitions. Word has length 29 [2020-10-09 14:01:16,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:16,353 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 759 transitions. [2020-10-09 14:01:16,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-09 14:01:16,353 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 759 transitions. [2020-10-09 14:01:16,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-09 14:01:16,355 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:16,355 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:16,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:16,569 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:16,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:16,570 INFO L82 PathProgramCache]: Analyzing trace with hash 827854074, now seen corresponding path program 6 times [2020-10-09 14:01:16,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:16,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256360719] [2020-10-09 14:01:16,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:16,675 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-09 14:01:16,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256360719] [2020-10-09 14:01:16,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127763785] [2020-10-09 14:01:16,676 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:16,722 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-10-09 14:01:16,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:01:16,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-09 14:01:16,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:16,751 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-09 14:01:16,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:01:16,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-09 14:01:16,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136719685] [2020-10-09 14:01:16,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 14:01:16,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:16,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 14:01:16,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-09 14:01:16,753 INFO L87 Difference]: Start difference. First operand 323 states and 759 transitions. Second operand 7 states. [2020-10-09 14:01:16,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:16,776 INFO L93 Difference]: Finished difference Result 416 states and 984 transitions. [2020-10-09 14:01:16,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 14:01:16,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-10-09 14:01:16,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:16,779 INFO L225 Difference]: With dead ends: 416 [2020-10-09 14:01:16,779 INFO L226 Difference]: Without dead ends: 416 [2020-10-09 14:01:16,780 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-09 14:01:16,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-10-09 14:01:16,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 385. [2020-10-09 14:01:16,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-10-09 14:01:16,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 909 transitions. [2020-10-09 14:01:16,791 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 909 transitions. Word has length 31 [2020-10-09 14:01:16,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:16,791 INFO L481 AbstractCegarLoop]: Abstraction has 385 states and 909 transitions. [2020-10-09 14:01:16,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 14:01:16,791 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 909 transitions. [2020-10-09 14:01:16,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-09 14:01:16,793 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:16,793 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:17,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:17,008 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:17,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:17,009 INFO L82 PathProgramCache]: Analyzing trace with hash 848716736, now seen corresponding path program 7 times [2020-10-09 14:01:17,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:17,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322676367] [2020-10-09 14:01:17,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:17,065 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-09 14:01:17,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322676367] [2020-10-09 14:01:17,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84214823] [2020-10-09 14:01:17,066 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:17,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 14:01:17,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:17,150 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-09 14:01:17,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:01:17,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-09 14:01:17,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9863892] [2020-10-09 14:01:17,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 14:01:17,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:17,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 14:01:17,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-09 14:01:17,152 INFO L87 Difference]: Start difference. First operand 385 states and 909 transitions. Second operand 8 states. [2020-10-09 14:01:17,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:17,207 INFO L93 Difference]: Finished difference Result 447 states and 1059 transitions. [2020-10-09 14:01:17,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 14:01:17,211 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-09 14:01:17,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:17,216 INFO L225 Difference]: With dead ends: 447 [2020-10-09 14:01:17,216 INFO L226 Difference]: Without dead ends: 447 [2020-10-09 14:01:17,216 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-09 14:01:17,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-10-09 14:01:17,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2020-10-09 14:01:17,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2020-10-09 14:01:17,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1059 transitions. [2020-10-09 14:01:17,233 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1059 transitions. Word has length 33 [2020-10-09 14:01:17,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:17,233 INFO L481 AbstractCegarLoop]: Abstraction has 447 states and 1059 transitions. [2020-10-09 14:01:17,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 14:01:17,234 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1059 transitions. [2020-10-09 14:01:17,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-09 14:01:17,236 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:17,236 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:17,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-10-09 14:01:17,452 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:17,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:17,452 INFO L82 PathProgramCache]: Analyzing trace with hash -577101562, now seen corresponding path program 8 times [2020-10-09 14:01:17,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:17,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145074649] [2020-10-09 14:01:17,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:17,790 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 41 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:17,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145074649] [2020-10-09 14:01:17,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613360629] [2020-10-09 14:01:17,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:17,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 14:01:17,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:01:17,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-09 14:01:17,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:17,905 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:17,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-09 14:01:17,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [21] total 23 [2020-10-09 14:01:17,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716035347] [2020-10-09 14:01:17,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-09 14:01:17,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:17,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-09 14:01:17,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2020-10-09 14:01:17,908 INFO L87 Difference]: Start difference. First operand 447 states and 1059 transitions. Second operand 23 states. [2020-10-09 14:01:18,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:18,716 INFO L93 Difference]: Finished difference Result 1728 states and 4029 transitions. [2020-10-09 14:01:18,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-09 14:01:18,716 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-09 14:01:18,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:18,725 INFO L225 Difference]: With dead ends: 1728 [2020-10-09 14:01:18,725 INFO L226 Difference]: Without dead ends: 876 [2020-10-09 14:01:18,726 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=720, Invalid=1632, Unknown=0, NotChecked=0, Total=2352 [2020-10-09 14:01:18,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2020-10-09 14:01:18,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 585. [2020-10-09 14:01:18,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-09 14:01:18,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1403 transitions. [2020-10-09 14:01:18,743 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1403 transitions. Word has length 35 [2020-10-09 14:01:18,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:18,745 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 1403 transitions. [2020-10-09 14:01:18,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-09 14:01:18,745 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1403 transitions. [2020-10-09 14:01:18,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-09 14:01:18,748 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:18,748 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:18,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:18,963 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:18,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:18,964 INFO L82 PathProgramCache]: Analyzing trace with hash 915971432, now seen corresponding path program 9 times [2020-10-09 14:01:18,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:18,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670713840] [2020-10-09 14:01:18,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:19,191 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:19,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670713840] [2020-10-09 14:01:19,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791822388] [2020-10-09 14:01:19,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:19,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-10-09 14:01:19,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:01:19,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-09 14:01:19,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:19,296 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:19,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:01:19,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-09 14:01:19,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864689394] [2020-10-09 14:01:19,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-09 14:01:19,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:19,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-09 14:01:19,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-09 14:01:19,298 INFO L87 Difference]: Start difference. First operand 585 states and 1403 transitions. Second operand 23 states. [2020-10-09 14:01:19,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:19,895 INFO L93 Difference]: Finished difference Result 1731 states and 4053 transitions. [2020-10-09 14:01:19,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 14:01:19,896 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-09 14:01:19,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:19,903 INFO L225 Difference]: With dead ends: 1731 [2020-10-09 14:01:19,904 INFO L226 Difference]: Without dead ends: 816 [2020-10-09 14:01:19,905 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=566, Invalid=1414, Unknown=0, NotChecked=0, Total=1980 [2020-10-09 14:01:19,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2020-10-09 14:01:19,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 569. [2020-10-09 14:01:19,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2020-10-09 14:01:19,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1355 transitions. [2020-10-09 14:01:19,947 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1355 transitions. Word has length 35 [2020-10-09 14:01:19,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:19,947 INFO L481 AbstractCegarLoop]: Abstraction has 569 states and 1355 transitions. [2020-10-09 14:01:19,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-09 14:01:19,948 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1355 transitions. [2020-10-09 14:01:19,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-09 14:01:19,950 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:19,950 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:20,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:20,166 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:20,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:20,166 INFO L82 PathProgramCache]: Analyzing trace with hash -570341976, now seen corresponding path program 10 times [2020-10-09 14:01:20,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:20,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98022829] [2020-10-09 14:01:20,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:20,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98022829] [2020-10-09 14:01:20,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041258103] [2020-10-09 14:01:20,422 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:20,466 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 14:01:20,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:01:20,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-09 14:01:20,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:20,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:01:20,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-09 14:01:20,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788825995] [2020-10-09 14:01:20,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-09 14:01:20,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:20,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-09 14:01:20,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-09 14:01:20,549 INFO L87 Difference]: Start difference. First operand 569 states and 1355 transitions. Second operand 23 states. [2020-10-09 14:01:21,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:21,142 INFO L93 Difference]: Finished difference Result 2131 states and 4974 transitions. [2020-10-09 14:01:21,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-09 14:01:21,143 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-09 14:01:21,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:21,150 INFO L225 Difference]: With dead ends: 2131 [2020-10-09 14:01:21,150 INFO L226 Difference]: Without dead ends: 792 [2020-10-09 14:01:21,151 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=558, Invalid=1422, Unknown=0, NotChecked=0, Total=1980 [2020-10-09 14:01:21,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2020-10-09 14:01:21,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 553. [2020-10-09 14:01:21,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-10-09 14:01:21,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1307 transitions. [2020-10-09 14:01:21,179 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1307 transitions. Word has length 35 [2020-10-09 14:01:21,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:21,180 INFO L481 AbstractCegarLoop]: Abstraction has 553 states and 1307 transitions. [2020-10-09 14:01:21,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-09 14:01:21,180 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1307 transitions. [2020-10-09 14:01:21,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-09 14:01:21,181 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:21,182 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:21,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-09 14:01:21,395 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:21,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:21,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1306582504, now seen corresponding path program 11 times [2020-10-09 14:01:21,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:21,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213708834] [2020-10-09 14:01:21,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:21,598 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:21,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213708834] [2020-10-09 14:01:21,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421456186] [2020-10-09 14:01:21,599 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:21,635 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-10-09 14:01:21,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:01:21,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-09 14:01:21,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:21,690 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:21,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:01:21,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-09 14:01:21,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338674531] [2020-10-09 14:01:21,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-09 14:01:21,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:21,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-09 14:01:21,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-09 14:01:21,705 INFO L87 Difference]: Start difference. First operand 553 states and 1307 transitions. Second operand 23 states. [2020-10-09 14:01:22,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:22,315 INFO L93 Difference]: Finished difference Result 2670 states and 6229 transitions. [2020-10-09 14:01:22,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-09 14:01:22,316 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-09 14:01:22,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:22,322 INFO L225 Difference]: With dead ends: 2670 [2020-10-09 14:01:22,322 INFO L226 Difference]: Without dead ends: 768 [2020-10-09 14:01:22,323 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=588, Invalid=1482, Unknown=0, NotChecked=0, Total=2070 [2020-10-09 14:01:22,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2020-10-09 14:01:22,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 537. [2020-10-09 14:01:22,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2020-10-09 14:01:22,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 1259 transitions. [2020-10-09 14:01:22,337 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 1259 transitions. Word has length 35 [2020-10-09 14:01:22,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:22,337 INFO L481 AbstractCegarLoop]: Abstraction has 537 states and 1259 transitions. [2020-10-09 14:01:22,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-09 14:01:22,337 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 1259 transitions. [2020-10-09 14:01:22,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-09 14:01:22,339 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:22,339 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:22,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-09 14:01:22,554 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:22,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:22,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1144743464, now seen corresponding path program 12 times [2020-10-09 14:01:22,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:22,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743074465] [2020-10-09 14:01:22,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:22,779 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:22,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743074465] [2020-10-09 14:01:22,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775564326] [2020-10-09 14:01:22,780 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:22,820 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-10-09 14:01:22,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:01:22,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-09 14:01:22,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:22,879 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:22,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:01:22,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-09 14:01:22,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249310586] [2020-10-09 14:01:22,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-09 14:01:22,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:22,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-09 14:01:22,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-09 14:01:22,881 INFO L87 Difference]: Start difference. First operand 537 states and 1259 transitions. Second operand 23 states. [2020-10-09 14:01:23,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:23,773 INFO L93 Difference]: Finished difference Result 3250 states and 7573 transitions. [2020-10-09 14:01:23,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-09 14:01:23,774 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-09 14:01:23,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:23,786 INFO L225 Difference]: With dead ends: 3250 [2020-10-09 14:01:23,786 INFO L226 Difference]: Without dead ends: 2437 [2020-10-09 14:01:23,787 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=897, Invalid=2409, Unknown=0, NotChecked=0, Total=3306 [2020-10-09 14:01:23,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2020-10-09 14:01:23,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 1276. [2020-10-09 14:01:23,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2020-10-09 14:01:23,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 3101 transitions. [2020-10-09 14:01:23,830 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 3101 transitions. Word has length 35 [2020-10-09 14:01:23,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:23,830 INFO L481 AbstractCegarLoop]: Abstraction has 1276 states and 3101 transitions. [2020-10-09 14:01:23,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-09 14:01:23,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 3101 transitions. [2020-10-09 14:01:23,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-09 14:01:23,833 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:23,833 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:24,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-09 14:01:24,048 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:24,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:24,049 INFO L82 PathProgramCache]: Analyzing trace with hash 909108414, now seen corresponding path program 13 times [2020-10-09 14:01:24,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:24,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216841257] [2020-10-09 14:01:24,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-09 14:01:24,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216841257] [2020-10-09 14:01:24,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663782258] [2020-10-09 14:01:24,235 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:24,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-09 14:01:24,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:24,316 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 33 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-09 14:01:24,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:01:24,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-10-09 14:01:24,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143313678] [2020-10-09 14:01:24,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-09 14:01:24,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:24,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-09 14:01:24,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2020-10-09 14:01:24,318 INFO L87 Difference]: Start difference. First operand 1276 states and 3101 transitions. Second operand 21 states. [2020-10-09 14:01:25,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:25,045 INFO L93 Difference]: Finished difference Result 2721 states and 6420 transitions. [2020-10-09 14:01:25,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-09 14:01:25,046 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 35 [2020-10-09 14:01:25,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:25,057 INFO L225 Difference]: With dead ends: 2721 [2020-10-09 14:01:25,058 INFO L226 Difference]: Without dead ends: 2040 [2020-10-09 14:01:25,059 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=690, Invalid=1860, Unknown=0, NotChecked=0, Total=2550 [2020-10-09 14:01:25,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2020-10-09 14:01:25,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 1192. [2020-10-09 14:01:25,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2020-10-09 14:01:25,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 2873 transitions. [2020-10-09 14:01:25,095 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 2873 transitions. Word has length 35 [2020-10-09 14:01:25,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:25,095 INFO L481 AbstractCegarLoop]: Abstraction has 1192 states and 2873 transitions. [2020-10-09 14:01:25,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-09 14:01:25,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 2873 transitions. [2020-10-09 14:01:25,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-09 14:01:25,099 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:25,099 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:25,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:25,314 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:25,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:25,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1383117118, now seen corresponding path program 14 times [2020-10-09 14:01:25,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:25,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363533841] [2020-10-09 14:01:25,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:25,467 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 19 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 14:01:25,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363533841] [2020-10-09 14:01:25,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934078888] [2020-10-09 14:01:25,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:25,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 14:01:25,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:01:25,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-09 14:01:25,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:25,540 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 27 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 14:01:25,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:01:25,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-10-09 14:01:25,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660017088] [2020-10-09 14:01:25,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 14:01:25,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:25,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 14:01:25,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-10-09 14:01:25,543 INFO L87 Difference]: Start difference. First operand 1192 states and 2873 transitions. Second operand 19 states. [2020-10-09 14:01:26,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:26,115 INFO L93 Difference]: Finished difference Result 2550 states and 5976 transitions. [2020-10-09 14:01:26,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-09 14:01:26,116 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 35 [2020-10-09 14:01:26,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:26,124 INFO L225 Difference]: With dead ends: 2550 [2020-10-09 14:01:26,124 INFO L226 Difference]: Without dead ends: 1781 [2020-10-09 14:01:26,125 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=511, Invalid=1381, Unknown=0, NotChecked=0, Total=1892 [2020-10-09 14:01:26,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2020-10-09 14:01:26,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1058. [2020-10-09 14:01:26,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1058 states. [2020-10-09 14:01:26,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 2526 transitions. [2020-10-09 14:01:26,150 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 2526 transitions. Word has length 35 [2020-10-09 14:01:26,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:26,151 INFO L481 AbstractCegarLoop]: Abstraction has 1058 states and 2526 transitions. [2020-10-09 14:01:26,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 14:01:26,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 2526 transitions. [2020-10-09 14:01:26,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-09 14:01:26,153 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:26,153 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:26,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-09 14:01:26,368 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:26,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:26,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1638948286, now seen corresponding path program 15 times [2020-10-09 14:01:26,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:26,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879081373] [2020-10-09 14:01:26,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:26,487 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-09 14:01:26,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879081373] [2020-10-09 14:01:26,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714122462] [2020-10-09 14:01:26,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:26,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-10-09 14:01:26,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:01:26,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-09 14:01:26,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:26,562 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-09 14:01:26,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:01:26,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-10-09 14:01:26,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252318145] [2020-10-09 14:01:26,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 14:01:26,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:26,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 14:01:26,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-09 14:01:26,572 INFO L87 Difference]: Start difference. First operand 1058 states and 2526 transitions. Second operand 17 states. [2020-10-09 14:01:27,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:27,004 INFO L93 Difference]: Finished difference Result 2371 states and 5518 transitions. [2020-10-09 14:01:27,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-09 14:01:27,004 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 35 [2020-10-09 14:01:27,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:27,011 INFO L225 Difference]: With dead ends: 2371 [2020-10-09 14:01:27,011 INFO L226 Difference]: Without dead ends: 1444 [2020-10-09 14:01:27,011 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2020-10-09 14:01:27,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2020-10-09 14:01:27,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 874. [2020-10-09 14:01:27,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 874 states. [2020-10-09 14:01:27,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 2060 transitions. [2020-10-09 14:01:27,032 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 2060 transitions. Word has length 35 [2020-10-09 14:01:27,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:27,033 INFO L481 AbstractCegarLoop]: Abstraction has 874 states and 2060 transitions. [2020-10-09 14:01:27,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 14:01:27,033 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 2060 transitions. [2020-10-09 14:01:27,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-09 14:01:27,035 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:27,035 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:27,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-09 14:01:27,249 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:27,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:27,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1615402434, now seen corresponding path program 16 times [2020-10-09 14:01:27,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:27,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825694451] [2020-10-09 14:01:27,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-09 14:01:27,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825694451] [2020-10-09 14:01:27,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976882268] [2020-10-09 14:01:27,351 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:27,383 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 14:01:27,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:01:27,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 14:01:27,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:27,412 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 21 proven. 13 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-09 14:01:27,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:01:27,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-10-09 14:01:27,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435207384] [2020-10-09 14:01:27,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 14:01:27,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:27,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 14:01:27,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-09 14:01:27,414 INFO L87 Difference]: Start difference. First operand 874 states and 2060 transitions. Second operand 15 states. [2020-10-09 14:01:27,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:27,740 INFO L93 Difference]: Finished difference Result 1669 states and 3808 transitions. [2020-10-09 14:01:27,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-09 14:01:27,741 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 35 [2020-10-09 14:01:27,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:27,760 INFO L225 Difference]: With dead ends: 1669 [2020-10-09 14:01:27,760 INFO L226 Difference]: Without dead ends: 744 [2020-10-09 14:01:27,760 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=237, Invalid=633, Unknown=0, NotChecked=0, Total=870 [2020-10-09 14:01:27,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2020-10-09 14:01:27,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 521. [2020-10-09 14:01:27,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2020-10-09 14:01:27,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 1211 transitions. [2020-10-09 14:01:27,771 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 1211 transitions. Word has length 35 [2020-10-09 14:01:27,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:27,771 INFO L481 AbstractCegarLoop]: Abstraction has 521 states and 1211 transitions. [2020-10-09 14:01:27,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 14:01:27,771 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 1211 transitions. [2020-10-09 14:01:27,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-09 14:01:27,773 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:27,773 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:27,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-09 14:01:27,989 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:27,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:27,990 INFO L82 PathProgramCache]: Analyzing trace with hash 236248680, now seen corresponding path program 17 times [2020-10-09 14:01:27,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:27,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640799193] [2020-10-09 14:01:27,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:28,181 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:28,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640799193] [2020-10-09 14:01:28,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838686155] [2020-10-09 14:01:28,182 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:28,218 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-10-09 14:01:28,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:01:28,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-09 14:01:28,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:28,255 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:28,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:01:28,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-09 14:01:28,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088796064] [2020-10-09 14:01:28,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-09 14:01:28,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:28,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-09 14:01:28,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-09 14:01:28,257 INFO L87 Difference]: Start difference. First operand 521 states and 1211 transitions. Second operand 23 states. [2020-10-09 14:01:28,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:28,814 INFO L93 Difference]: Finished difference Result 1734 states and 4025 transitions. [2020-10-09 14:01:28,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 14:01:28,815 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-09 14:01:28,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:28,819 INFO L225 Difference]: With dead ends: 1734 [2020-10-09 14:01:28,819 INFO L226 Difference]: Without dead ends: 894 [2020-10-09 14:01:28,820 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=544, Invalid=1348, Unknown=0, NotChecked=0, Total=1892 [2020-10-09 14:01:28,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-10-09 14:01:28,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 582. [2020-10-09 14:01:28,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2020-10-09 14:01:28,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 1364 transitions. [2020-10-09 14:01:28,832 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 1364 transitions. Word has length 35 [2020-10-09 14:01:28,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:28,833 INFO L481 AbstractCegarLoop]: Abstraction has 582 states and 1364 transitions. [2020-10-09 14:01:28,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-09 14:01:28,833 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 1364 transitions. [2020-10-09 14:01:28,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-09 14:01:28,834 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:28,834 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:29,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:29,048 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:29,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:29,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1268277900, now seen corresponding path program 18 times [2020-10-09 14:01:29,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:29,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421318522] [2020-10-09 14:01:29,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:29,229 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:29,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421318522] [2020-10-09 14:01:29,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999949146] [2020-10-09 14:01:29,230 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:29,274 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-10-09 14:01:29,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:01:29,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-09 14:01:29,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:29,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:01:29,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-09 14:01:29,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852879296] [2020-10-09 14:01:29,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-09 14:01:29,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:29,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-09 14:01:29,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-09 14:01:29,324 INFO L87 Difference]: Start difference. First operand 582 states and 1364 transitions. Second operand 23 states. [2020-10-09 14:01:29,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:29,919 INFO L93 Difference]: Finished difference Result 1717 states and 3982 transitions. [2020-10-09 14:01:29,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-09 14:01:29,919 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-09 14:01:29,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:29,923 INFO L225 Difference]: With dead ends: 1717 [2020-10-09 14:01:29,923 INFO L226 Difference]: Without dead ends: 774 [2020-10-09 14:01:29,924 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=538, Invalid=1354, Unknown=0, NotChecked=0, Total=1892 [2020-10-09 14:01:29,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2020-10-09 14:01:29,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 538. [2020-10-09 14:01:29,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-10-09 14:01:29,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1256 transitions. [2020-10-09 14:01:29,934 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1256 transitions. Word has length 35 [2020-10-09 14:01:29,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:29,934 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 1256 transitions. [2020-10-09 14:01:29,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-09 14:01:29,934 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1256 transitions. [2020-10-09 14:01:29,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-09 14:01:29,935 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:29,936 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:30,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:30,149 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:30,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:30,150 INFO L82 PathProgramCache]: Analyzing trace with hash -905226112, now seen corresponding path program 19 times [2020-10-09 14:01:30,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:30,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405105297] [2020-10-09 14:01:30,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:30,352 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:30,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405105297] [2020-10-09 14:01:30,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613495828] [2020-10-09 14:01:30,353 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:30,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-09 14:01:30,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:30,441 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:30,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:01:30,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-09 14:01:30,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507879786] [2020-10-09 14:01:30,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-09 14:01:30,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:30,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-09 14:01:30,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-09 14:01:30,443 INFO L87 Difference]: Start difference. First operand 538 states and 1256 transitions. Second operand 23 states. [2020-10-09 14:01:31,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:31,026 INFO L93 Difference]: Finished difference Result 2063 states and 4783 transitions. [2020-10-09 14:01:31,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-09 14:01:31,026 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-09 14:01:31,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:31,031 INFO L225 Difference]: With dead ends: 2063 [2020-10-09 14:01:31,031 INFO L226 Difference]: Without dead ends: 716 [2020-10-09 14:01:31,032 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=569, Invalid=1411, Unknown=0, NotChecked=0, Total=1980 [2020-10-09 14:01:31,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-10-09 14:01:31,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 494. [2020-10-09 14:01:31,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-10-09 14:01:31,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1148 transitions. [2020-10-09 14:01:31,042 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1148 transitions. Word has length 35 [2020-10-09 14:01:31,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:31,043 INFO L481 AbstractCegarLoop]: Abstraction has 494 states and 1148 transitions. [2020-10-09 14:01:31,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-09 14:01:31,043 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1148 transitions. [2020-10-09 14:01:31,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-09 14:01:31,044 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:31,045 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:31,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-09 14:01:31,248 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:31,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:31,248 INFO L82 PathProgramCache]: Analyzing trace with hash 95191180, now seen corresponding path program 20 times [2020-10-09 14:01:31,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:31,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884031139] [2020-10-09 14:01:31,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:31,439 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:31,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884031139] [2020-10-09 14:01:31,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645757068] [2020-10-09 14:01:31,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:31,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 14:01:31,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:01:31,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-09 14:01:31,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:31,560 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:31,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:01:31,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-09 14:01:31,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130843835] [2020-10-09 14:01:31,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-09 14:01:31,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:31,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-09 14:01:31,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-09 14:01:31,565 INFO L87 Difference]: Start difference. First operand 494 states and 1148 transitions. Second operand 23 states. [2020-10-09 14:01:32,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:32,209 INFO L93 Difference]: Finished difference Result 2541 states and 5902 transitions. [2020-10-09 14:01:32,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-09 14:01:32,209 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-09 14:01:32,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:32,213 INFO L225 Difference]: With dead ends: 2541 [2020-10-09 14:01:32,213 INFO L226 Difference]: Without dead ends: 658 [2020-10-09 14:01:32,214 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=596, Invalid=1474, Unknown=0, NotChecked=0, Total=2070 [2020-10-09 14:01:32,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-09 14:01:32,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 450. [2020-10-09 14:01:32,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-09 14:01:32,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1040 transitions. [2020-10-09 14:01:32,225 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1040 transitions. Word has length 35 [2020-10-09 14:01:32,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:32,226 INFO L481 AbstractCegarLoop]: Abstraction has 450 states and 1040 transitions. [2020-10-09 14:01:32,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-09 14:01:32,226 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1040 transitions. [2020-10-09 14:01:32,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-09 14:01:32,227 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:32,227 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:32,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-09 14:01:32,441 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:32,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:32,442 INFO L82 PathProgramCache]: Analyzing trace with hash -576465512, now seen corresponding path program 21 times [2020-10-09 14:01:32,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:32,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645987648] [2020-10-09 14:01:32,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:32,673 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:32,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645987648] [2020-10-09 14:01:32,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028895555] [2020-10-09 14:01:32,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:32,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-10-09 14:01:32,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:01:32,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-09 14:01:32,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:32,767 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:32,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:01:32,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-09 14:01:32,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144227093] [2020-10-09 14:01:32,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-09 14:01:32,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:32,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-09 14:01:32,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-09 14:01:32,770 INFO L87 Difference]: Start difference. First operand 450 states and 1040 transitions. Second operand 23 states. [2020-10-09 14:01:33,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:33,571 INFO L93 Difference]: Finished difference Result 2473 states and 5749 transitions. [2020-10-09 14:01:33,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-09 14:01:33,572 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-09 14:01:33,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:33,582 INFO L225 Difference]: With dead ends: 2473 [2020-10-09 14:01:33,582 INFO L226 Difference]: Without dead ends: 1507 [2020-10-09 14:01:33,583 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=823, Invalid=2257, Unknown=0, NotChecked=0, Total=3080 [2020-10-09 14:01:33,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2020-10-09 14:01:33,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 771. [2020-10-09 14:01:33,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 771 states. [2020-10-09 14:01:33,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1835 transitions. [2020-10-09 14:01:33,600 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1835 transitions. Word has length 35 [2020-10-09 14:01:33,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:33,601 INFO L481 AbstractCegarLoop]: Abstraction has 771 states and 1835 transitions. [2020-10-09 14:01:33,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-09 14:01:33,601 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1835 transitions. [2020-10-09 14:01:33,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-09 14:01:33,603 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:33,603 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:33,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:33,816 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:33,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:33,817 INFO L82 PathProgramCache]: Analyzing trace with hash -365571194, now seen corresponding path program 22 times [2020-10-09 14:01:33,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:33,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825865078] [2020-10-09 14:01:33,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:33,981 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 29 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:33,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825865078] [2020-10-09 14:01:33,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895672857] [2020-10-09 14:01:33,984 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:34,016 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 14:01:34,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:01:34,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-09 14:01:34,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:34,049 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:34,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:01:34,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-10-09 14:01:34,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188600027] [2020-10-09 14:01:34,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-09 14:01:34,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:34,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-09 14:01:34,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-10-09 14:01:34,051 INFO L87 Difference]: Start difference. First operand 771 states and 1835 transitions. Second operand 21 states. [2020-10-09 14:01:34,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:34,608 INFO L93 Difference]: Finished difference Result 1951 states and 4562 transitions. [2020-10-09 14:01:34,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-09 14:01:34,608 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 35 [2020-10-09 14:01:34,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:34,612 INFO L225 Difference]: With dead ends: 1951 [2020-10-09 14:01:34,613 INFO L226 Difference]: Without dead ends: 1081 [2020-10-09 14:01:34,614 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=628, Invalid=1724, Unknown=0, NotChecked=0, Total=2352 [2020-10-09 14:01:34,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2020-10-09 14:01:34,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 637. [2020-10-09 14:01:34,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 637 states. [2020-10-09 14:01:34,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1488 transitions. [2020-10-09 14:01:34,628 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1488 transitions. Word has length 35 [2020-10-09 14:01:34,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:34,628 INFO L481 AbstractCegarLoop]: Abstraction has 637 states and 1488 transitions. [2020-10-09 14:01:34,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-09 14:01:34,628 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1488 transitions. [2020-10-09 14:01:34,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-09 14:01:34,630 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:34,630 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:34,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-09 14:01:34,845 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:34,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:34,846 INFO L82 PathProgramCache]: Analyzing trace with hash 2092017522, now seen corresponding path program 23 times [2020-10-09 14:01:34,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:34,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468608388] [2020-10-09 14:01:34,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-09 14:01:34,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468608388] [2020-10-09 14:01:34,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837887225] [2020-10-09 14:01:34,976 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:35,016 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-10-09 14:01:35,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:01:35,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-09 14:01:35,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:35,047 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-09 14:01:35,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:01:35,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-10-09 14:01:35,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112214930] [2020-10-09 14:01:35,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 14:01:35,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:35,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 14:01:35,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-10-09 14:01:35,050 INFO L87 Difference]: Start difference. First operand 637 states and 1488 transitions. Second operand 19 states. [2020-10-09 14:01:35,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:35,525 INFO L93 Difference]: Finished difference Result 1790 states and 4143 transitions. [2020-10-09 14:01:35,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 14:01:35,526 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 35 [2020-10-09 14:01:35,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:35,528 INFO L225 Difference]: With dead ends: 1790 [2020-10-09 14:01:35,529 INFO L226 Difference]: Without dead ends: 744 [2020-10-09 14:01:35,529 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2020-10-09 14:01:35,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2020-10-09 14:01:35,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 453. [2020-10-09 14:01:35,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-10-09 14:01:35,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 1022 transitions. [2020-10-09 14:01:35,538 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 1022 transitions. Word has length 35 [2020-10-09 14:01:35,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:35,539 INFO L481 AbstractCegarLoop]: Abstraction has 453 states and 1022 transitions. [2020-10-09 14:01:35,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 14:01:35,539 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 1022 transitions. [2020-10-09 14:01:35,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-09 14:01:35,541 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:35,541 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:35,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:35,754 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:35,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:35,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1602760798, now seen corresponding path program 24 times [2020-10-09 14:01:35,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:35,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489354914] [2020-10-09 14:01:35,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:35,857 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 19 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 14:01:35,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489354914] [2020-10-09 14:01:35,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346183252] [2020-10-09 14:01:35,858 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:35,895 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-09 14:01:35,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:01:35,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-09 14:01:35,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:35,924 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 34 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 14:01:35,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:01:35,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-10-09 14:01:35,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520509605] [2020-10-09 14:01:35,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 14:01:35,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:35,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 14:01:35,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-09 14:01:35,926 INFO L87 Difference]: Start difference. First operand 453 states and 1022 transitions. Second operand 17 states. [2020-10-09 14:01:36,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:36,296 INFO L93 Difference]: Finished difference Result 1084 states and 2413 transitions. [2020-10-09 14:01:36,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-09 14:01:36,297 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 35 [2020-10-09 14:01:36,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:36,297 INFO L225 Difference]: With dead ends: 1084 [2020-10-09 14:01:36,297 INFO L226 Difference]: Without dead ends: 0 [2020-10-09 14:01:36,298 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=322, Invalid=868, Unknown=0, NotChecked=0, Total=1190 [2020-10-09 14:01:36,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-09 14:01:36,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-09 14:01:36,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-09 14:01:36,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-09 14:01:36,299 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-10-09 14:01:36,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:36,299 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-09 14:01:36,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 14:01:36,299 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-09 14:01:36,299 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-09 14:01:36,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-09 14:01:36,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 02:01:36 BasicIcfg [2020-10-09 14:01:36,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 14:01:36,511 INFO L168 Benchmark]: Toolchain (without parser) took 24621.14 ms. Allocated memory was 248.0 MB in the beginning and 568.3 MB in the end (delta: 320.3 MB). Free memory was 203.3 MB in the beginning and 293.5 MB in the end (delta: -90.2 MB). Peak memory consumption was 230.1 MB. Max. memory is 14.2 GB. [2020-10-09 14:01:36,512 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 248.0 MB. Free memory is still 224.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 14:01:36,512 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.31 ms. Allocated memory was 248.0 MB in the beginning and 306.7 MB in the end (delta: 58.7 MB). Free memory was 203.3 MB in the beginning and 281.9 MB in the end (delta: -78.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 14.2 GB. [2020-10-09 14:01:36,513 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.46 ms. Allocated memory is still 306.7 MB. Free memory was 281.9 MB in the beginning and 279.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 14:01:36,513 INFO L168 Benchmark]: Boogie Preprocessor took 23.91 ms. Allocated memory is still 306.7 MB. Free memory is still 279.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 14:01:36,513 INFO L168 Benchmark]: RCFGBuilder took 305.20 ms. Allocated memory is still 306.7 MB. Free memory was 279.4 MB in the beginning and 260.7 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 14.2 GB. [2020-10-09 14:01:36,514 INFO L168 Benchmark]: TraceAbstraction took 23922.61 ms. Allocated memory was 306.7 MB in the beginning and 568.3 MB in the end (delta: 261.6 MB). Free memory was 260.7 MB in the beginning and 293.5 MB in the end (delta: -32.9 MB). Peak memory consumption was 228.8 MB. Max. memory is 14.2 GB. [2020-10-09 14:01:36,517 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 248.0 MB. Free memory is still 224.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 325.31 ms. Allocated memory was 248.0 MB in the beginning and 306.7 MB in the end (delta: 58.7 MB). Free memory was 203.3 MB in the beginning and 281.9 MB in the end (delta: -78.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 37.46 ms. Allocated memory is still 306.7 MB. Free memory was 281.9 MB in the beginning and 279.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 23.91 ms. Allocated memory is still 306.7 MB. Free memory is still 279.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 305.20 ms. Allocated memory is still 306.7 MB. Free memory was 279.4 MB in the beginning and 260.7 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 14.2 GB. * TraceAbstraction took 23922.61 ms. Allocated memory was 306.7 MB in the beginning and 568.3 MB in the end (delta: 261.6 MB). Free memory was 260.7 MB in the beginning and 293.5 MB in the end (delta: -32.9 MB). Peak memory consumption was 228.8 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 351 VarBasedMoverChecksPositive, 8 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 8 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 65 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.8s, 57 PlacesBefore, 27 PlacesAfterwards, 56 TransitionsBefore, 24 TransitionsAfterwards, 528 CoEnabledTransitionPairs, 4 FixpointIterations, 16 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 34 TotalNumberOfCompositions, 866 MoverChecksTotal - PositiveResult [Line: 46]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 23.7s, OverallIterations: 26, TraceHistogramMax: 5, AutomataDifference: 10.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 1926 SDtfs, 9011 SDslu, 9317 SDs, 0 SdLazy, 5664 SolverSat, 1140 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1525 GetRequests, 751 SyntacticMatches, 0 SemanticMatches, 774 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6305 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1276occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 26 MinimizatonAttempts, 7142 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 1613 NumberOfCodeBlocks, 1613 NumberOfCodeBlocksAsserted, 128 NumberOfCheckSat, 1562 ConstructedInterpolants, 0 QuantifiedInterpolants, 141580 SizeOfPredicates, 284 NumberOfNonLiveVariables, 2584 ConjunctsInSsa, 345 ConjunctsInUnsatCore, 51 InterpolantComputations, 3 PerfectInterpolantSequences, 1427/1996 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 correct! Received shutdown request...