/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 23:51:28,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 23:51:28,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 23:51:28,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 23:51:28,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 23:51:28,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 23:51:28,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 23:51:28,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 23:51:28,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 23:51:28,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 23:51:28,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 23:51:28,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 23:51:28,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 23:51:28,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 23:51:28,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 23:51:28,739 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 23:51:28,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 23:51:28,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 23:51:28,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 23:51:28,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 23:51:28,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 23:51:28,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 23:51:28,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 23:51:28,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 23:51:28,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-05 23:51:28,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 23:51:28,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 23:51:28,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 23:51:28,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 23:51:28,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 23:51:28,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 23:51:28,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 23:51:28,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 23:51:28,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 23:51:28,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 23:51:28,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 23:51:28,791 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-05 23:51:28,832 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 23:51:28,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 23:51:28,834 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 23:51:28,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 23:51:28,835 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 23:51:28,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 23:51:28,836 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 23:51:28,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 23:51:28,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 23:51:28,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 23:51:28,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 23:51:28,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 23:51:28,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 23:51:28,838 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 23:51:28,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 23:51:28,839 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 23:51:28,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 23:51:28,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 23:51:28,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 23:51:28,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 23:51:28,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 23:51:28,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:51:28,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 23:51:28,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-05 23:51:28,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 23:51:28,841 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 23:51:28,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 23:51:28,841 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-05 23:51:28,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 23:51:29,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 23:51:29,226 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 23:51:29,230 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 23:51:29,232 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 23:51:29,232 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 23:51:29,233 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c [2020-10-05 23:51:29,318 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d3ed9abb/90dd4cdc93624fefb49fcc70509b18e9/FLAG8988c32a3 [2020-10-05 23:51:29,785 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 23:51:29,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c [2020-10-05 23:51:29,787 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-05 23:51:29,787 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-05 23:51:29,787 WARN L117 ultiparseSymbolTable]: System include stdbool.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-05 23:51:29,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d3ed9abb/90dd4cdc93624fefb49fcc70509b18e9/FLAG8988c32a3 [2020-10-05 23:51:30,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d3ed9abb/90dd4cdc93624fefb49fcc70509b18e9 [2020-10-05 23:51:30,170 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 23:51:30,171 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 23:51:30,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 23:51:30,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 23:51:30,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 23:51:30,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:51:30" (1/1) ... [2020-10-05 23:51:30,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13da8cc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:30, skipping insertion in model container [2020-10-05 23:51:30,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:51:30" (1/1) ... [2020-10-05 23:51:30,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 23:51:30,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 23:51:30,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:51:30,393 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 23:51:30,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:51:30,512 INFO L208 MainTranslator]: Completed translation [2020-10-05 23:51:30,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:30 WrapperNode [2020-10-05 23:51:30,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 23:51:30,514 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 23:51:30,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 23:51:30,514 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 23:51:30,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:30" (1/1) ... [2020-10-05 23:51:30,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:30" (1/1) ... [2020-10-05 23:51:30,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 23:51:30,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 23:51:30,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 23:51:30,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 23:51:30,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:30" (1/1) ... [2020-10-05 23:51:30,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:30" (1/1) ... [2020-10-05 23:51:30,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:30" (1/1) ... [2020-10-05 23:51:30,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:30" (1/1) ... [2020-10-05 23:51:30,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:30" (1/1) ... [2020-10-05 23:51:30,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:30" (1/1) ... [2020-10-05 23:51:30,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:30" (1/1) ... [2020-10-05 23:51:30,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 23:51:30,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 23:51:30,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 23:51:30,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 23:51:30,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:51:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 23:51:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 23:51:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 23:51:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-05 23:51:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure secondIncrement [2020-10-05 23:51:30,634 INFO L138 BoogieDeclarations]: Found implementation of procedure secondIncrement [2020-10-05 23:51:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure firstIncrement [2020-10-05 23:51:30,634 INFO L138 BoogieDeclarations]: Found implementation of procedure firstIncrement [2020-10-05 23:51:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 23:51:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 23:51:30,636 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 23:51:30,935 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 23:51:30,935 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-05 23:51:30,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:51:30 BoogieIcfgContainer [2020-10-05 23:51:30,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 23:51:30,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 23:51:30,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 23:51:30,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 23:51:30,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 11:51:30" (1/3) ... [2020-10-05 23:51:30,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4c3f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:51:30, skipping insertion in model container [2020-10-05 23:51:30,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:30" (2/3) ... [2020-10-05 23:51:30,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4c3f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:51:30, skipping insertion in model container [2020-10-05 23:51:30,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:51:30" (3/3) ... [2020-10-05 23:51:30,946 INFO L109 eAbstractionObserver]: Analyzing ICFG NonAtomicIncrement_2Threads.c [2020-10-05 23:51:30,956 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 23:51:30,957 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-05 23:51:30,965 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 23:51:30,966 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 23:51:30,995 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:30,995 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:30,995 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:30,996 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:30,996 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:30,996 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:30,997 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:30,997 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:30,997 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:30,997 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:30,998 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:30,998 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:30,998 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:30,999 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:30,999 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:30,999 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:31,000 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:31,000 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:31,000 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:31,000 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:31,001 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:31,001 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:31,005 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:31,005 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:31,005 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:31,005 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:31,006 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:31,012 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:31,012 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:31,012 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:31,013 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:31,013 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:31,034 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-05 23:51:31,052 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:51:31,052 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:51:31,052 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:51:31,052 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:51:31,052 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:51:31,052 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:51:31,053 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:51:31,053 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:51:31,070 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 56 transitions, 134 flow [2020-10-05 23:51:31,072 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 56 transitions, 134 flow [2020-10-05 23:51:31,117 INFO L129 PetriNetUnfolder]: 5/56 cut-off events. [2020-10-05 23:51:31,117 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-05 23:51:31,123 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. [2020-10-05 23:51:31,126 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 56 transitions, 134 flow [2020-10-05 23:51:31,169 INFO L129 PetriNetUnfolder]: 5/56 cut-off events. [2020-10-05 23:51:31,169 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-05 23:51:31,171 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. [2020-10-05 23:51:31,172 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 528 [2020-10-05 23:51:31,175 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:51:31,873 INFO L206 etLargeBlockEncoding]: Checked pairs total: 426 [2020-10-05 23:51:31,873 INFO L214 etLargeBlockEncoding]: Total number of compositions: 32 [2020-10-05 23:51:31,877 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 24 transitions, 70 flow [2020-10-05 23:51:31,890 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 70 states. [2020-10-05 23:51:31,893 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-10-05 23:51:31,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-05 23:51:31,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:31,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:31,902 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:31,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:31,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1474833226, now seen corresponding path program 1 times [2020-10-05 23:51:31,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:31,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361651667] [2020-10-05 23:51:31,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:32,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361651667] [2020-10-05 23:51:32,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:51:32,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:51:32,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786487312] [2020-10-05 23:51:32,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:51:32,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:32,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:51:32,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:51:32,101 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 3 states. [2020-10-05 23:51:32,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:32,153 INFO L93 Difference]: Finished difference Result 96 states and 211 transitions. [2020-10-05 23:51:32,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:51:32,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-05 23:51:32,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:32,181 INFO L225 Difference]: With dead ends: 96 [2020-10-05 23:51:32,182 INFO L226 Difference]: Without dead ends: 95 [2020-10-05 23:51:32,184 INFO L675 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 [2020-10-05 23:51:32,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-05 23:51:32,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 82. [2020-10-05 23:51:32,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-05 23:51:32,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 180 transitions. [2020-10-05 23:51:32,232 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 180 transitions. Word has length 15 [2020-10-05 23:51:32,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:32,232 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 180 transitions. [2020-10-05 23:51:32,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:51:32,233 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 180 transitions. [2020-10-05 23:51:32,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-05 23:51:32,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:32,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:32,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 23:51:32,235 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:32,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:32,235 INFO L82 PathProgramCache]: Analyzing trace with hash -657301668, now seen corresponding path program 1 times [2020-10-05 23:51:32,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:32,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971325209] [2020-10-05 23:51:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:32,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:32,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971325209] [2020-10-05 23:51:32,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199072494] [2020-10-05 23:51:32,293 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 [2020-10-05 23:51:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:32,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-05 23:51:32,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:32,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-05 23:51:32,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-05 23:51:32,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-10-05 23:51:32,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261306576] [2020-10-05 23:51:32,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:51:32,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:32,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:51:32,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:51:32,412 INFO L87 Difference]: Start difference. First operand 82 states and 180 transitions. Second operand 3 states. [2020-10-05 23:51:32,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:32,432 INFO L93 Difference]: Finished difference Result 108 states and 242 transitions. [2020-10-05 23:51:32,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:51:32,433 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-05 23:51:32,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:32,435 INFO L225 Difference]: With dead ends: 108 [2020-10-05 23:51:32,435 INFO L226 Difference]: Without dead ends: 108 [2020-10-05 23:51:32,436 INFO L675 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 [2020-10-05 23:51:32,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-05 23:51:32,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 95. [2020-10-05 23:51:32,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-05 23:51:32,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 211 transitions. [2020-10-05 23:51:32,450 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 211 transitions. Word has length 17 [2020-10-05 23:51:32,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:32,450 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 211 transitions. [2020-10-05 23:51:32,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:51:32,451 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 211 transitions. [2020-10-05 23:51:32,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-05 23:51:32,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:32,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:32,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-05 23:51:32,659 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:32,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:32,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1653958726, now seen corresponding path program 1 times [2020-10-05 23:51:32,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:32,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278926497] [2020-10-05 23:51:32,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:32,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:32,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278926497] [2020-10-05 23:51:32,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875954728] [2020-10-05 23:51:32,740 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 [2020-10-05 23:51:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:32,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-05 23:51:32,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:32,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-05 23:51:32,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:32,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-05 23:51:32,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088159106] [2020-10-05 23:51:32,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 23:51:32,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:32,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 23:51:32,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:51:32,826 INFO L87 Difference]: Start difference. First operand 95 states and 211 transitions. Second operand 6 states. [2020-10-05 23:51:32,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:32,993 INFO L93 Difference]: Finished difference Result 197 states and 454 transitions. [2020-10-05 23:51:32,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:51:32,998 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-05 23:51:32,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:33,002 INFO L225 Difference]: With dead ends: 197 [2020-10-05 23:51:33,002 INFO L226 Difference]: Without dead ends: 197 [2020-10-05 23:51:33,005 INFO L675 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 [2020-10-05 23:51:33,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-05 23:51:33,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 159. [2020-10-05 23:51:33,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-05 23:51:33,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 363 transitions. [2020-10-05 23:51:33,040 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 363 transitions. Word has length 19 [2020-10-05 23:51:33,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:33,040 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 363 transitions. [2020-10-05 23:51:33,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 23:51:33,041 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 363 transitions. [2020-10-05 23:51:33,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-05 23:51:33,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:33,043 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:33,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:51:33,258 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:33,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:33,258 INFO L82 PathProgramCache]: Analyzing trace with hash 2009767926, now seen corresponding path program 2 times [2020-10-05 23:51:33,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:33,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384841510] [2020-10-05 23:51:33,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:33,327 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-05 23:51:33,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384841510] [2020-10-05 23:51:33,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812992169] [2020-10-05 23:51:33,328 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 [2020-10-05 23:51:33,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:51:33,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:51:33,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-05 23:51:33,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:33,414 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-05 23:51:33,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:33,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-05 23:51:33,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469124661] [2020-10-05 23:51:33,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 23:51:33,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:33,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 23:51:33,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:51:33,417 INFO L87 Difference]: Start difference. First operand 159 states and 363 transitions. Second operand 6 states. [2020-10-05 23:51:33,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:33,460 INFO L93 Difference]: Finished difference Result 210 states and 486 transitions. [2020-10-05 23:51:33,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:51:33,461 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-05 23:51:33,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:33,463 INFO L225 Difference]: With dead ends: 210 [2020-10-05 23:51:33,463 INFO L226 Difference]: Without dead ends: 210 [2020-10-05 23:51:33,464 INFO L675 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 [2020-10-05 23:51:33,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-05 23:51:33,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 193. [2020-10-05 23:51:33,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-05 23:51:33,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 445 transitions. [2020-10-05 23:51:33,480 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 445 transitions. Word has length 23 [2020-10-05 23:51:33,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:33,481 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 445 transitions. [2020-10-05 23:51:33,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 23:51:33,481 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 445 transitions. [2020-10-05 23:51:33,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-05 23:51:33,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:33,484 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:33,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:51:33,699 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:33,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:33,699 INFO L82 PathProgramCache]: Analyzing trace with hash -275132064, now seen corresponding path program 3 times [2020-10-05 23:51:33,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:33,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328582846] [2020-10-05 23:51:33,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:33,805 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-05 23:51:33,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328582846] [2020-10-05 23:51:33,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154551029] [2020-10-05 23:51:33,806 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 [2020-10-05 23:51:33,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-05 23:51:33,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:51:33,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-05 23:51:33,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:33,885 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-05 23:51:33,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:33,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-05 23:51:33,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234315329] [2020-10-05 23:51:33,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-05 23:51:33,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:33,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-05 23:51:33,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-05 23:51:33,887 INFO L87 Difference]: Start difference. First operand 193 states and 445 transitions. Second operand 7 states. [2020-10-05 23:51:33,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:33,914 INFO L93 Difference]: Finished difference Result 244 states and 568 transitions. [2020-10-05 23:51:33,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 23:51:33,915 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-05 23:51:33,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:33,917 INFO L225 Difference]: With dead ends: 244 [2020-10-05 23:51:33,918 INFO L226 Difference]: Without dead ends: 244 [2020-10-05 23:51:33,918 INFO L675 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 [2020-10-05 23:51:33,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-05 23:51:33,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 227. [2020-10-05 23:51:33,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-05 23:51:33,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 527 transitions. [2020-10-05 23:51:33,933 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 527 transitions. Word has length 25 [2020-10-05 23:51:33,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:33,934 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 527 transitions. [2020-10-05 23:51:33,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-05 23:51:33,934 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 527 transitions. [2020-10-05 23:51:33,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-05 23:51:33,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:33,936 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:34,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:51:34,150 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:34,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:34,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1335734198, now seen corresponding path program 4 times [2020-10-05 23:51:34,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:34,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055059753] [2020-10-05 23:51:34,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:34,219 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-05 23:51:34,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055059753] [2020-10-05 23:51:34,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074596544] [2020-10-05 23:51:34,220 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 [2020-10-05 23:51:34,274 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:51:34,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:51:34,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-05 23:51:34,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:34,304 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-05 23:51:34,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:34,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-05 23:51:34,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398445362] [2020-10-05 23:51:34,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-05 23:51:34,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:34,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-05 23:51:34,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-05 23:51:34,307 INFO L87 Difference]: Start difference. First operand 227 states and 527 transitions. Second operand 8 states. [2020-10-05 23:51:34,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:34,336 INFO L93 Difference]: Finished difference Result 261 states and 609 transitions. [2020-10-05 23:51:34,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 23:51:34,337 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-05 23:51:34,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:34,339 INFO L225 Difference]: With dead ends: 261 [2020-10-05 23:51:34,339 INFO L226 Difference]: Without dead ends: 261 [2020-10-05 23:51:34,340 INFO L675 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 [2020-10-05 23:51:34,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-05 23:51:34,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2020-10-05 23:51:34,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-05 23:51:34,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 609 transitions. [2020-10-05 23:51:34,353 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 609 transitions. Word has length 27 [2020-10-05 23:51:34,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:34,353 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 609 transitions. [2020-10-05 23:51:34,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-05 23:51:34,354 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 609 transitions. [2020-10-05 23:51:34,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-05 23:51:34,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:34,359 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:34,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-05 23:51:34,574 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:34,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:34,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1627831476, now seen corresponding path program 5 times [2020-10-05 23:51:34,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:34,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503819935] [2020-10-05 23:51:34,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:34,640 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-05 23:51:34,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503819935] [2020-10-05 23:51:34,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881786555] [2020-10-05 23:51:34,641 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 [2020-10-05 23:51:34,680 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-05 23:51:34,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:51:34,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-05 23:51:34,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:34,704 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-05 23:51:34,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:34,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-05 23:51:34,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102146384] [2020-10-05 23:51:34,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 23:51:34,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:34,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 23:51:34,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:51:34,707 INFO L87 Difference]: Start difference. First operand 261 states and 609 transitions. Second operand 6 states. [2020-10-05 23:51:34,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:34,746 INFO L93 Difference]: Finished difference Result 354 states and 834 transitions. [2020-10-05 23:51:34,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:51:34,747 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-05 23:51:34,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:34,750 INFO L225 Difference]: With dead ends: 354 [2020-10-05 23:51:34,751 INFO L226 Difference]: Without dead ends: 354 [2020-10-05 23:51:34,751 INFO L675 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 [2020-10-05 23:51:34,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-05 23:51:34,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 323. [2020-10-05 23:51:34,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-10-05 23:51:34,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 759 transitions. [2020-10-05 23:51:34,763 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 759 transitions. Word has length 29 [2020-10-05 23:51:34,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:34,763 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 759 transitions. [2020-10-05 23:51:34,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 23:51:34,763 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 759 transitions. [2020-10-05 23:51:34,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-05 23:51:34,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:34,765 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:34,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:51:34,979 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:34,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:34,980 INFO L82 PathProgramCache]: Analyzing trace with hash 827854074, now seen corresponding path program 6 times [2020-10-05 23:51:34,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:34,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637363019] [2020-10-05 23:51:34,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:35,031 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-05 23:51:35,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637363019] [2020-10-05 23:51:35,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266850739] [2020-10-05 23:51:35,032 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 [2020-10-05 23:51:35,078 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-10-05 23:51:35,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:51:35,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-05 23:51:35,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:35,105 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-05 23:51:35,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:35,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-05 23:51:35,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212480419] [2020-10-05 23:51:35,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-05 23:51:35,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:35,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-05 23:51:35,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-05 23:51:35,108 INFO L87 Difference]: Start difference. First operand 323 states and 759 transitions. Second operand 7 states. [2020-10-05 23:51:35,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:35,133 INFO L93 Difference]: Finished difference Result 416 states and 984 transitions. [2020-10-05 23:51:35,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 23:51:35,134 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-10-05 23:51:35,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:35,137 INFO L225 Difference]: With dead ends: 416 [2020-10-05 23:51:35,137 INFO L226 Difference]: Without dead ends: 416 [2020-10-05 23:51:35,138 INFO L675 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 [2020-10-05 23:51:35,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-10-05 23:51:35,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 385. [2020-10-05 23:51:35,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-10-05 23:51:35,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 909 transitions. [2020-10-05 23:51:35,169 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 909 transitions. Word has length 31 [2020-10-05 23:51:35,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:35,170 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 909 transitions. [2020-10-05 23:51:35,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-05 23:51:35,171 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 909 transitions. [2020-10-05 23:51:35,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-05 23:51:35,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:35,173 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:35,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:51:35,387 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:35,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:35,387 INFO L82 PathProgramCache]: Analyzing trace with hash 848716736, now seen corresponding path program 7 times [2020-10-05 23:51:35,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:35,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663935724] [2020-10-05 23:51:35,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:35,444 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-05 23:51:35,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663935724] [2020-10-05 23:51:35,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950013807] [2020-10-05 23:51:35,445 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 [2020-10-05 23:51:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:35,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-05 23:51:35,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-05 23:51:35,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:35,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-05 23:51:35,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225379941] [2020-10-05 23:51:35,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-05 23:51:35,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:35,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-05 23:51:35,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-05 23:51:35,513 INFO L87 Difference]: Start difference. First operand 385 states and 909 transitions. Second operand 8 states. [2020-10-05 23:51:35,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:35,553 INFO L93 Difference]: Finished difference Result 447 states and 1059 transitions. [2020-10-05 23:51:35,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 23:51:35,553 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-05 23:51:35,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:35,557 INFO L225 Difference]: With dead ends: 447 [2020-10-05 23:51:35,557 INFO L226 Difference]: Without dead ends: 447 [2020-10-05 23:51:35,557 INFO L675 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 [2020-10-05 23:51:35,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-10-05 23:51:35,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2020-10-05 23:51:35,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2020-10-05 23:51:35,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1059 transitions. [2020-10-05 23:51:35,574 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1059 transitions. Word has length 33 [2020-10-05 23:51:35,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:35,574 INFO L479 AbstractCegarLoop]: Abstraction has 447 states and 1059 transitions. [2020-10-05 23:51:35,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-05 23:51:35,574 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1059 transitions. [2020-10-05 23:51:35,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-05 23:51:35,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:35,576 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:35,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-10-05 23:51:35,792 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:35,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:35,793 INFO L82 PathProgramCache]: Analyzing trace with hash -577101562, now seen corresponding path program 8 times [2020-10-05 23:51:35,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:35,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327999783] [2020-10-05 23:51:35,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:36,075 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 41 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:36,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327999783] [2020-10-05 23:51:36,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9863892] [2020-10-05 23:51:36,076 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 [2020-10-05 23:51:36,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:51:36,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:51:36,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-05 23:51:36,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:36,183 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:36,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-05 23:51:36,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [21] total 23 [2020-10-05 23:51:36,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703169201] [2020-10-05 23:51:36,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-05 23:51:36,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:36,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-05 23:51:36,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2020-10-05 23:51:36,186 INFO L87 Difference]: Start difference. First operand 447 states and 1059 transitions. Second operand 23 states. [2020-10-05 23:51:36,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:36,952 INFO L93 Difference]: Finished difference Result 1728 states and 4029 transitions. [2020-10-05 23:51:36,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-05 23:51:36,953 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-05 23:51:36,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:36,961 INFO L225 Difference]: With dead ends: 1728 [2020-10-05 23:51:36,961 INFO L226 Difference]: Without dead ends: 876 [2020-10-05 23:51:36,963 INFO L675 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 [2020-10-05 23:51:36,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2020-10-05 23:51:36,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 585. [2020-10-05 23:51:36,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-05 23:51:36,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1403 transitions. [2020-10-05 23:51:36,985 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1403 transitions. Word has length 35 [2020-10-05 23:51:36,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:36,986 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 1403 transitions. [2020-10-05 23:51:36,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-05 23:51:36,987 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1403 transitions. [2020-10-05 23:51:36,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-05 23:51:36,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:36,989 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:37,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:51:37,205 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:37,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:37,206 INFO L82 PathProgramCache]: Analyzing trace with hash 915971432, now seen corresponding path program 9 times [2020-10-05 23:51:37,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:37,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160039565] [2020-10-05 23:51:37,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:37,474 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:37,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160039565] [2020-10-05 23:51:37,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705795767] [2020-10-05 23:51:37,475 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 [2020-10-05 23:51:37,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-10-05 23:51:37,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:51:37,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-05 23:51:37,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:37,589 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:37,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:37,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-05 23:51:37,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593645119] [2020-10-05 23:51:37,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-05 23:51:37,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:37,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-05 23:51:37,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:51:37,592 INFO L87 Difference]: Start difference. First operand 585 states and 1403 transitions. Second operand 23 states. [2020-10-05 23:51:38,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:38,254 INFO L93 Difference]: Finished difference Result 1731 states and 4053 transitions. [2020-10-05 23:51:38,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-05 23:51:38,254 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-05 23:51:38,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:38,259 INFO L225 Difference]: With dead ends: 1731 [2020-10-05 23:51:38,259 INFO L226 Difference]: Without dead ends: 816 [2020-10-05 23:51:38,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=566, Invalid=1414, Unknown=0, NotChecked=0, Total=1980 [2020-10-05 23:51:38,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2020-10-05 23:51:38,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 569. [2020-10-05 23:51:38,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2020-10-05 23:51:38,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1355 transitions. [2020-10-05 23:51:38,278 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1355 transitions. Word has length 35 [2020-10-05 23:51:38,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:38,278 INFO L479 AbstractCegarLoop]: Abstraction has 569 states and 1355 transitions. [2020-10-05 23:51:38,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-05 23:51:38,279 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1355 transitions. [2020-10-05 23:51:38,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-05 23:51:38,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:38,281 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:38,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:51:38,495 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:38,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:38,496 INFO L82 PathProgramCache]: Analyzing trace with hash -570341976, now seen corresponding path program 10 times [2020-10-05 23:51:38,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:38,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748049605] [2020-10-05 23:51:38,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:38,801 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:38,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748049605] [2020-10-05 23:51:38,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771412087] [2020-10-05 23:51:38,802 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 [2020-10-05 23:51:38,856 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:51:38,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:51:38,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-05 23:51:38,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:38,906 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:38,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:38,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-05 23:51:38,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326679929] [2020-10-05 23:51:38,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-05 23:51:38,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:38,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-05 23:51:38,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:51:38,909 INFO L87 Difference]: Start difference. First operand 569 states and 1355 transitions. Second operand 23 states. [2020-10-05 23:51:39,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:39,514 INFO L93 Difference]: Finished difference Result 2131 states and 4974 transitions. [2020-10-05 23:51:39,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-05 23:51:39,514 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-05 23:51:39,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:39,519 INFO L225 Difference]: With dead ends: 2131 [2020-10-05 23:51:39,519 INFO L226 Difference]: Without dead ends: 792 [2020-10-05 23:51:39,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=558, Invalid=1422, Unknown=0, NotChecked=0, Total=1980 [2020-10-05 23:51:39,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2020-10-05 23:51:39,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 553. [2020-10-05 23:51:39,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-10-05 23:51:39,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1307 transitions. [2020-10-05 23:51:39,538 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1307 transitions. Word has length 35 [2020-10-05 23:51:39,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:39,539 INFO L479 AbstractCegarLoop]: Abstraction has 553 states and 1307 transitions. [2020-10-05 23:51:39,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-05 23:51:39,539 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1307 transitions. [2020-10-05 23:51:39,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-05 23:51:39,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:39,541 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:39,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-05 23:51:39,756 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:39,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:39,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1306582504, now seen corresponding path program 11 times [2020-10-05 23:51:39,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:39,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273480076] [2020-10-05 23:51:39,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:40,035 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:40,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273480076] [2020-10-05 23:51:40,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439094055] [2020-10-05 23:51:40,036 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 [2020-10-05 23:51:40,079 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-10-05 23:51:40,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:51:40,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-05 23:51:40,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:40,127 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:40,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:40,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-05 23:51:40,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144127296] [2020-10-05 23:51:40,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-05 23:51:40,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:40,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-05 23:51:40,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:51:40,129 INFO L87 Difference]: Start difference. First operand 553 states and 1307 transitions. Second operand 23 states. [2020-10-05 23:51:40,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:40,781 INFO L93 Difference]: Finished difference Result 2670 states and 6229 transitions. [2020-10-05 23:51:40,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-05 23:51:40,782 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-05 23:51:40,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:40,789 INFO L225 Difference]: With dead ends: 2670 [2020-10-05 23:51:40,789 INFO L226 Difference]: Without dead ends: 768 [2020-10-05 23:51:40,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=588, Invalid=1482, Unknown=0, NotChecked=0, Total=2070 [2020-10-05 23:51:40,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2020-10-05 23:51:40,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 537. [2020-10-05 23:51:40,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2020-10-05 23:51:40,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 1259 transitions. [2020-10-05 23:51:40,828 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 1259 transitions. Word has length 35 [2020-10-05 23:51:40,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:40,828 INFO L479 AbstractCegarLoop]: Abstraction has 537 states and 1259 transitions. [2020-10-05 23:51:40,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-05 23:51:40,829 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 1259 transitions. [2020-10-05 23:51:40,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-05 23:51:40,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:40,830 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:41,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-05 23:51:41,045 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:41,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:41,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1144743464, now seen corresponding path program 12 times [2020-10-05 23:51:41,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:41,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139914673] [2020-10-05 23:51:41,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:41,262 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:41,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139914673] [2020-10-05 23:51:41,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400808809] [2020-10-05 23:51:41,264 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 [2020-10-05 23:51:41,308 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-10-05 23:51:41,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:51:41,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-05 23:51:41,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:41,355 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:41,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:41,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-05 23:51:41,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057165406] [2020-10-05 23:51:41,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-05 23:51:41,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:41,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-05 23:51:41,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:51:41,357 INFO L87 Difference]: Start difference. First operand 537 states and 1259 transitions. Second operand 23 states. [2020-10-05 23:51:42,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:42,214 INFO L93 Difference]: Finished difference Result 3250 states and 7573 transitions. [2020-10-05 23:51:42,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-05 23:51:42,214 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-05 23:51:42,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:42,226 INFO L225 Difference]: With dead ends: 3250 [2020-10-05 23:51:42,227 INFO L226 Difference]: Without dead ends: 2437 [2020-10-05 23:51:42,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=897, Invalid=2409, Unknown=0, NotChecked=0, Total=3306 [2020-10-05 23:51:42,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2020-10-05 23:51:42,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 1276. [2020-10-05 23:51:42,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2020-10-05 23:51:42,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 3101 transitions. [2020-10-05 23:51:42,270 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 3101 transitions. Word has length 35 [2020-10-05 23:51:42,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:42,271 INFO L479 AbstractCegarLoop]: Abstraction has 1276 states and 3101 transitions. [2020-10-05 23:51:42,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-05 23:51:42,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 3101 transitions. [2020-10-05 23:51:42,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-05 23:51:42,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:42,274 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:42,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-05 23:51:42,488 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:42,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:42,489 INFO L82 PathProgramCache]: Analyzing trace with hash 909108414, now seen corresponding path program 13 times [2020-10-05 23:51:42,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:42,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722367760] [2020-10-05 23:51:42,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:42,678 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-05 23:51:42,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722367760] [2020-10-05 23:51:42,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678108232] [2020-10-05 23:51:42,679 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 [2020-10-05 23:51:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:42,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-05 23:51:42,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:42,772 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 33 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-05 23:51:42,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:42,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-10-05 23:51:42,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371593458] [2020-10-05 23:51:42,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-05 23:51:42,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:42,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-05 23:51:42,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:51:42,774 INFO L87 Difference]: Start difference. First operand 1276 states and 3101 transitions. Second operand 21 states. [2020-10-05 23:51:43,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:43,524 INFO L93 Difference]: Finished difference Result 2721 states and 6420 transitions. [2020-10-05 23:51:43,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-05 23:51:43,526 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 35 [2020-10-05 23:51:43,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:43,536 INFO L225 Difference]: With dead ends: 2721 [2020-10-05 23:51:43,536 INFO L226 Difference]: Without dead ends: 2040 [2020-10-05 23:51:43,539 INFO L675 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 [2020-10-05 23:51:43,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2020-10-05 23:51:43,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 1192. [2020-10-05 23:51:43,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2020-10-05 23:51:43,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 2873 transitions. [2020-10-05 23:51:43,574 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 2873 transitions. Word has length 35 [2020-10-05 23:51:43,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:43,575 INFO L479 AbstractCegarLoop]: Abstraction has 1192 states and 2873 transitions. [2020-10-05 23:51:43,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-05 23:51:43,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 2873 transitions. [2020-10-05 23:51:43,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-05 23:51:43,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:43,578 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:43,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:51:43,793 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:43,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:43,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1383117118, now seen corresponding path program 14 times [2020-10-05 23:51:43,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:43,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275521702] [2020-10-05 23:51:43,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:43,969 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 19 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-05 23:51:43,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275521702] [2020-10-05 23:51:43,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348795001] [2020-10-05 23:51:43,970 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 [2020-10-05 23:51:44,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:51:44,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:51:44,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-05 23:51:44,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:44,051 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 27 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-05 23:51:44,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:44,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-10-05 23:51:44,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901877567] [2020-10-05 23:51:44,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-05 23:51:44,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:44,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-05 23:51:44,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-10-05 23:51:44,054 INFO L87 Difference]: Start difference. First operand 1192 states and 2873 transitions. Second operand 19 states. [2020-10-05 23:51:44,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:44,636 INFO L93 Difference]: Finished difference Result 2550 states and 5976 transitions. [2020-10-05 23:51:44,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-05 23:51:44,636 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 35 [2020-10-05 23:51:44,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:44,645 INFO L225 Difference]: With dead ends: 2550 [2020-10-05 23:51:44,645 INFO L226 Difference]: Without dead ends: 1781 [2020-10-05 23:51:44,646 INFO L675 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 [2020-10-05 23:51:44,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2020-10-05 23:51:44,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1058. [2020-10-05 23:51:44,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1058 states. [2020-10-05 23:51:44,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 2526 transitions. [2020-10-05 23:51:44,676 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 2526 transitions. Word has length 35 [2020-10-05 23:51:44,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:44,676 INFO L479 AbstractCegarLoop]: Abstraction has 1058 states and 2526 transitions. [2020-10-05 23:51:44,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-05 23:51:44,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 2526 transitions. [2020-10-05 23:51:44,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-05 23:51:44,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:44,679 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:44,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-05 23:51:44,893 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:44,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:44,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1638948286, now seen corresponding path program 15 times [2020-10-05 23:51:44,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:44,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776100735] [2020-10-05 23:51:44,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:45,039 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-05 23:51:45,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776100735] [2020-10-05 23:51:45,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461510780] [2020-10-05 23:51:45,040 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 [2020-10-05 23:51:45,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-10-05 23:51:45,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:51:45,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-05 23:51:45,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:45,117 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-05 23:51:45,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:45,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-10-05 23:51:45,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284805597] [2020-10-05 23:51:45,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:51:45,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:45,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:51:45,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:51:45,123 INFO L87 Difference]: Start difference. First operand 1058 states and 2526 transitions. Second operand 17 states. [2020-10-05 23:51:45,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:45,572 INFO L93 Difference]: Finished difference Result 2371 states and 5518 transitions. [2020-10-05 23:51:45,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-05 23:51:45,573 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 35 [2020-10-05 23:51:45,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:45,580 INFO L225 Difference]: With dead ends: 2371 [2020-10-05 23:51:45,580 INFO L226 Difference]: Without dead ends: 1444 [2020-10-05 23:51:45,581 INFO L675 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 [2020-10-05 23:51:45,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2020-10-05 23:51:45,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 874. [2020-10-05 23:51:45,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 874 states. [2020-10-05 23:51:45,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 2060 transitions. [2020-10-05 23:51:45,604 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 2060 transitions. Word has length 35 [2020-10-05 23:51:45,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:45,604 INFO L479 AbstractCegarLoop]: Abstraction has 874 states and 2060 transitions. [2020-10-05 23:51:45,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:51:45,604 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 2060 transitions. [2020-10-05 23:51:45,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-05 23:51:45,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:45,607 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:45,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-05 23:51:45,821 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:45,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:45,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1615402434, now seen corresponding path program 16 times [2020-10-05 23:51:45,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:45,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553796024] [2020-10-05 23:51:45,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:45,931 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-05 23:51:45,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553796024] [2020-10-05 23:51:45,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904631841] [2020-10-05 23:51:45,932 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 [2020-10-05 23:51:45,965 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:51:45,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:51:45,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-05 23:51:45,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:45,991 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 21 proven. 13 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-05 23:51:45,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:45,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-10-05 23:51:45,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139047038] [2020-10-05 23:51:45,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:51:45,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:45,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:51:45,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:51:45,994 INFO L87 Difference]: Start difference. First operand 874 states and 2060 transitions. Second operand 15 states. [2020-10-05 23:51:46,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:46,323 INFO L93 Difference]: Finished difference Result 1669 states and 3808 transitions. [2020-10-05 23:51:46,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-05 23:51:46,323 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 35 [2020-10-05 23:51:46,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:46,327 INFO L225 Difference]: With dead ends: 1669 [2020-10-05 23:51:46,327 INFO L226 Difference]: Without dead ends: 744 [2020-10-05 23:51:46,328 INFO L675 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 [2020-10-05 23:51:46,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2020-10-05 23:51:46,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 521. [2020-10-05 23:51:46,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2020-10-05 23:51:46,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 1211 transitions. [2020-10-05 23:51:46,340 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 1211 transitions. Word has length 35 [2020-10-05 23:51:46,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:46,340 INFO L479 AbstractCegarLoop]: Abstraction has 521 states and 1211 transitions. [2020-10-05 23:51:46,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:51:46,340 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 1211 transitions. [2020-10-05 23:51:46,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-05 23:51:46,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:46,342 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:46,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-05 23:51:46,558 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:46,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:46,558 INFO L82 PathProgramCache]: Analyzing trace with hash 236248680, now seen corresponding path program 17 times [2020-10-05 23:51:46,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:46,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578259428] [2020-10-05 23:51:46,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:46,787 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:46,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578259428] [2020-10-05 23:51:46,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953835685] [2020-10-05 23:51:46,788 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 [2020-10-05 23:51:46,834 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-10-05 23:51:46,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:51:46,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-05 23:51:46,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:46,899 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:46,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:46,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-05 23:51:46,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976882268] [2020-10-05 23:51:46,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-05 23:51:46,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:46,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-05 23:51:46,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:51:46,903 INFO L87 Difference]: Start difference. First operand 521 states and 1211 transitions. Second operand 23 states. [2020-10-05 23:51:47,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:47,455 INFO L93 Difference]: Finished difference Result 1734 states and 4025 transitions. [2020-10-05 23:51:47,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-05 23:51:47,455 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-05 23:51:47,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:47,461 INFO L225 Difference]: With dead ends: 1734 [2020-10-05 23:51:47,461 INFO L226 Difference]: Without dead ends: 894 [2020-10-05 23:51:47,462 INFO L675 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 [2020-10-05 23:51:47,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-10-05 23:51:47,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 582. [2020-10-05 23:51:47,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2020-10-05 23:51:47,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 1364 transitions. [2020-10-05 23:51:47,473 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 1364 transitions. Word has length 35 [2020-10-05 23:51:47,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:47,474 INFO L479 AbstractCegarLoop]: Abstraction has 582 states and 1364 transitions. [2020-10-05 23:51:47,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-05 23:51:47,474 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 1364 transitions. [2020-10-05 23:51:47,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-05 23:51:47,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:47,475 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:47,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:51:47,689 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:47,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:47,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1268277900, now seen corresponding path program 18 times [2020-10-05 23:51:47,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:47,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178988475] [2020-10-05 23:51:47,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:47,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178988475] [2020-10-05 23:51:47,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125845669] [2020-10-05 23:51:47,898 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 [2020-10-05 23:51:47,958 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-10-05 23:51:47,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:51:47,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-05 23:51:47,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:48,005 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:48,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:48,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-05 23:51:48,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224746167] [2020-10-05 23:51:48,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-05 23:51:48,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:48,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-05 23:51:48,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:51:48,008 INFO L87 Difference]: Start difference. First operand 582 states and 1364 transitions. Second operand 23 states. [2020-10-05 23:51:48,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:48,594 INFO L93 Difference]: Finished difference Result 1717 states and 3982 transitions. [2020-10-05 23:51:48,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-05 23:51:48,595 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-05 23:51:48,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:48,599 INFO L225 Difference]: With dead ends: 1717 [2020-10-05 23:51:48,599 INFO L226 Difference]: Without dead ends: 774 [2020-10-05 23:51:48,600 INFO L675 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 [2020-10-05 23:51:48,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2020-10-05 23:51:48,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 538. [2020-10-05 23:51:48,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-10-05 23:51:48,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1256 transitions. [2020-10-05 23:51:48,609 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1256 transitions. Word has length 35 [2020-10-05 23:51:48,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:48,609 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 1256 transitions. [2020-10-05 23:51:48,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-05 23:51:48,610 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1256 transitions. [2020-10-05 23:51:48,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-05 23:51:48,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:48,611 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:48,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:51:48,825 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:48,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:48,825 INFO L82 PathProgramCache]: Analyzing trace with hash -905226112, now seen corresponding path program 19 times [2020-10-05 23:51:48,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:48,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593689044] [2020-10-05 23:51:48,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:49,038 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:49,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593689044] [2020-10-05 23:51:49,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811812702] [2020-10-05 23:51:49,039 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 [2020-10-05 23:51:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:49,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-05 23:51:49,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:49,113 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:49,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:49,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-05 23:51:49,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349032020] [2020-10-05 23:51:49,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-05 23:51:49,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:49,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-05 23:51:49,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:51:49,115 INFO L87 Difference]: Start difference. First operand 538 states and 1256 transitions. Second operand 23 states. [2020-10-05 23:51:49,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:49,733 INFO L93 Difference]: Finished difference Result 2063 states and 4783 transitions. [2020-10-05 23:51:49,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-05 23:51:49,733 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-05 23:51:49,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:49,737 INFO L225 Difference]: With dead ends: 2063 [2020-10-05 23:51:49,737 INFO L226 Difference]: Without dead ends: 716 [2020-10-05 23:51:49,738 INFO L675 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 [2020-10-05 23:51:49,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-10-05 23:51:49,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 494. [2020-10-05 23:51:49,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-10-05 23:51:49,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1148 transitions. [2020-10-05 23:51:49,746 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1148 transitions. Word has length 35 [2020-10-05 23:51:49,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:49,746 INFO L479 AbstractCegarLoop]: Abstraction has 494 states and 1148 transitions. [2020-10-05 23:51:49,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-05 23:51:49,746 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1148 transitions. [2020-10-05 23:51:49,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-05 23:51:49,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:49,748 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:49,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-05 23:51:49,951 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:49,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:49,952 INFO L82 PathProgramCache]: Analyzing trace with hash 95191180, now seen corresponding path program 20 times [2020-10-05 23:51:49,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:49,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450759705] [2020-10-05 23:51:49,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:50,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450759705] [2020-10-05 23:51:50,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857191386] [2020-10-05 23:51:50,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:51:50,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:51:50,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:51:50,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-05 23:51:50,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:50,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:50,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-05 23:51:50,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288270275] [2020-10-05 23:51:50,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-05 23:51:50,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:50,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-05 23:51:50,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:51:50,245 INFO L87 Difference]: Start difference. First operand 494 states and 1148 transitions. Second operand 23 states. [2020-10-05 23:51:50,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:50,880 INFO L93 Difference]: Finished difference Result 2541 states and 5902 transitions. [2020-10-05 23:51:50,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-05 23:51:50,881 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-05 23:51:50,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:50,885 INFO L225 Difference]: With dead ends: 2541 [2020-10-05 23:51:50,885 INFO L226 Difference]: Without dead ends: 658 [2020-10-05 23:51:50,886 INFO L675 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 [2020-10-05 23:51:50,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-05 23:51:50,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 450. [2020-10-05 23:51:50,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-05 23:51:50,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1040 transitions. [2020-10-05 23:51:50,895 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1040 transitions. Word has length 35 [2020-10-05 23:51:50,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:50,896 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 1040 transitions. [2020-10-05 23:51:50,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-05 23:51:50,896 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1040 transitions. [2020-10-05 23:51:50,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-05 23:51:50,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:50,897 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:51,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-05 23:51:51,111 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:51,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:51,112 INFO L82 PathProgramCache]: Analyzing trace with hash -576465512, now seen corresponding path program 21 times [2020-10-05 23:51:51,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:51,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336405093] [2020-10-05 23:51:51,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:51,358 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:51,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336405093] [2020-10-05 23:51:51,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231048795] [2020-10-05 23:51:51,359 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 [2020-10-05 23:51:51,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-10-05 23:51:51,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:51:51,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-05 23:51:51,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:51,443 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:51,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:51,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-05 23:51:51,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948490439] [2020-10-05 23:51:51,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-05 23:51:51,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:51,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-05 23:51:51,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:51:51,446 INFO L87 Difference]: Start difference. First operand 450 states and 1040 transitions. Second operand 23 states. [2020-10-05 23:51:52,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:52,257 INFO L93 Difference]: Finished difference Result 2473 states and 5749 transitions. [2020-10-05 23:51:52,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-05 23:51:52,257 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-05 23:51:52,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:52,265 INFO L225 Difference]: With dead ends: 2473 [2020-10-05 23:51:52,266 INFO L226 Difference]: Without dead ends: 1507 [2020-10-05 23:51:52,267 INFO L675 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 [2020-10-05 23:51:52,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2020-10-05 23:51:52,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 771. [2020-10-05 23:51:52,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 771 states. [2020-10-05 23:51:52,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1835 transitions. [2020-10-05 23:51:52,289 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1835 transitions. Word has length 35 [2020-10-05 23:51:52,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:52,289 INFO L479 AbstractCegarLoop]: Abstraction has 771 states and 1835 transitions. [2020-10-05 23:51:52,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-05 23:51:52,289 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1835 transitions. [2020-10-05 23:51:52,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-05 23:51:52,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:52,291 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:52,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:51:52,507 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:52,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:52,507 INFO L82 PathProgramCache]: Analyzing trace with hash -365571194, now seen corresponding path program 22 times [2020-10-05 23:51:52,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:52,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411875533] [2020-10-05 23:51:52,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:52,690 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 29 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:52,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411875533] [2020-10-05 23:51:52,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728154194] [2020-10-05 23:51:52,691 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 [2020-10-05 23:51:52,744 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:51:52,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:51:52,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-05 23:51:52,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:52,804 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:52,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:52,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-10-05 23:51:52,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925828064] [2020-10-05 23:51:52,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-05 23:51:52,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:52,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-05 23:51:52,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:51:52,806 INFO L87 Difference]: Start difference. First operand 771 states and 1835 transitions. Second operand 21 states. [2020-10-05 23:51:53,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:53,415 INFO L93 Difference]: Finished difference Result 1951 states and 4562 transitions. [2020-10-05 23:51:53,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-05 23:51:53,418 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 35 [2020-10-05 23:51:53,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:53,422 INFO L225 Difference]: With dead ends: 1951 [2020-10-05 23:51:53,422 INFO L226 Difference]: Without dead ends: 1081 [2020-10-05 23:51:53,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=628, Invalid=1724, Unknown=0, NotChecked=0, Total=2352 [2020-10-05 23:51:53,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2020-10-05 23:51:53,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 637. [2020-10-05 23:51:53,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 637 states. [2020-10-05 23:51:53,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1488 transitions. [2020-10-05 23:51:53,440 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1488 transitions. Word has length 35 [2020-10-05 23:51:53,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:53,440 INFO L479 AbstractCegarLoop]: Abstraction has 637 states and 1488 transitions. [2020-10-05 23:51:53,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-05 23:51:53,440 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1488 transitions. [2020-10-05 23:51:53,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-05 23:51:53,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:53,442 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:53,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-05 23:51:53,656 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:53,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:53,656 INFO L82 PathProgramCache]: Analyzing trace with hash 2092017522, now seen corresponding path program 23 times [2020-10-05 23:51:53,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:53,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751165245] [2020-10-05 23:51:53,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:53,783 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-05 23:51:53,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751165245] [2020-10-05 23:51:53,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542175359] [2020-10-05 23:51:53,784 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 [2020-10-05 23:51:53,830 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-10-05 23:51:53,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:51:53,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-05 23:51:53,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:53,863 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-05 23:51:53,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:53,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-10-05 23:51:53,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227944965] [2020-10-05 23:51:53,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-05 23:51:53,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:53,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-05 23:51:53,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-10-05 23:51:53,865 INFO L87 Difference]: Start difference. First operand 637 states and 1488 transitions. Second operand 19 states. [2020-10-05 23:51:54,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:54,396 INFO L93 Difference]: Finished difference Result 1790 states and 4143 transitions. [2020-10-05 23:51:54,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 23:51:54,396 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 35 [2020-10-05 23:51:54,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:54,399 INFO L225 Difference]: With dead ends: 1790 [2020-10-05 23:51:54,399 INFO L226 Difference]: Without dead ends: 744 [2020-10-05 23:51:54,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2020-10-05 23:51:54,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2020-10-05 23:51:54,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 453. [2020-10-05 23:51:54,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-10-05 23:51:54,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 1022 transitions. [2020-10-05 23:51:54,410 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 1022 transitions. Word has length 35 [2020-10-05 23:51:54,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:54,410 INFO L479 AbstractCegarLoop]: Abstraction has 453 states and 1022 transitions. [2020-10-05 23:51:54,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-05 23:51:54,410 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 1022 transitions. [2020-10-05 23:51:54,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-05 23:51:54,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:54,412 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:54,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:51:54,615 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:54,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:54,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1602760798, now seen corresponding path program 24 times [2020-10-05 23:51:54,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:54,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568458090] [2020-10-05 23:51:54,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:54,754 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 19 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-05 23:51:54,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568458090] [2020-10-05 23:51:54,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856634075] [2020-10-05 23:51:54,755 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 [2020-10-05 23:51:54,799 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-05 23:51:54,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:51:54,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-05 23:51:54,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:54,830 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 34 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-05 23:51:54,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:54,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-10-05 23:51:54,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837887225] [2020-10-05 23:51:54,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:51:54,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:54,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:51:54,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:51:54,832 INFO L87 Difference]: Start difference. First operand 453 states and 1022 transitions. Second operand 17 states. [2020-10-05 23:51:55,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:55,216 INFO L93 Difference]: Finished difference Result 1084 states and 2413 transitions. [2020-10-05 23:51:55,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-05 23:51:55,217 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 35 [2020-10-05 23:51:55,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:55,217 INFO L225 Difference]: With dead ends: 1084 [2020-10-05 23:51:55,218 INFO L226 Difference]: Without dead ends: 0 [2020-10-05 23:51:55,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=322, Invalid=868, Unknown=0, NotChecked=0, Total=1190 [2020-10-05 23:51:55,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-05 23:51:55,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-05 23:51:55,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-05 23:51:55,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-05 23:51:55,219 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-10-05 23:51:55,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:55,219 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-05 23:51:55,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:51:55,220 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-05 23:51:55,220 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-05 23:51:55,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-05 23:51:55,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 11:51:55 BasicIcfg [2020-10-05 23:51:55,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 23:51:55,429 INFO L168 Benchmark]: Toolchain (without parser) took 25257.11 ms. Allocated memory was 143.1 MB in the beginning and 382.2 MB in the end (delta: 239.1 MB). Free memory was 104.3 MB in the beginning and 261.6 MB in the end (delta: -157.4 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. [2020-10-05 23:51:55,430 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 143.1 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-05 23:51:55,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.18 ms. Allocated memory was 143.1 MB in the beginning and 205.5 MB in the end (delta: 62.4 MB). Free memory was 104.1 MB in the beginning and 183.6 MB in the end (delta: -79.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-10-05 23:51:55,431 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.95 ms. Allocated memory is still 205.5 MB. Free memory was 183.0 MB in the beginning and 181.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-05 23:51:55,432 INFO L168 Benchmark]: Boogie Preprocessor took 25.58 ms. Allocated memory is still 205.5 MB. Free memory was 181.7 MB in the beginning and 180.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-05 23:51:55,436 INFO L168 Benchmark]: RCFGBuilder took 360.22 ms. Allocated memory is still 205.5 MB. Free memory was 180.1 MB in the beginning and 163.6 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2020-10-05 23:51:55,437 INFO L168 Benchmark]: TraceAbstraction took 24486.34 ms. Allocated memory was 205.5 MB in the beginning and 382.2 MB in the end (delta: 176.7 MB). Free memory was 163.0 MB in the beginning and 261.6 MB in the end (delta: -98.6 MB). Peak memory consumption was 78.1 MB. Max. memory is 7.1 GB. [2020-10-05 23:51:55,441 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 143.1 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 341.18 ms. Allocated memory was 143.1 MB in the beginning and 205.5 MB in the end (delta: 62.4 MB). Free memory was 104.1 MB in the beginning and 183.6 MB in the end (delta: -79.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 36.95 ms. Allocated memory is still 205.5 MB. Free memory was 183.0 MB in the beginning and 181.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.58 ms. Allocated memory is still 205.5 MB. Free memory was 181.7 MB in the beginning and 180.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 360.22 ms. Allocated memory is still 205.5 MB. Free memory was 180.1 MB in the beginning and 163.6 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24486.34 ms. Allocated memory was 205.5 MB in the beginning and 382.2 MB in the end (delta: 176.7 MB). Free memory was 163.0 MB in the beginning and 261.6 MB in the end (delta: -98.6 MB). Peak memory consumption was 78.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 57 ProgramPointsBefore, 27 ProgramPointsAfterwards, 56 TransitionsBefore, 24 TransitionsAfterwards, 528 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 235 VarBasedMoverChecksPositive, 7 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 426 CheckedPairsTotal, 32 TotalNumberOfCompositions - 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: 24.3s, OverallIterations: 26, TraceHistogramMax: 5, AutomataDifference: 11.0s, 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, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1525 GetRequests, 751 SyntacticMatches, 0 SemanticMatches, 774 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6305 ImplicationChecksByTransitivity, 8.5s 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: 0.5s AutomataMinimizationTime, 26 MinimizatonAttempts, 7142 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.6s 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...