/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 22:49:06,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 22:49:06,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 22:49:06,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 22:49:06,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 22:49:06,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 22:49:06,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 22:49:06,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 22:49:06,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 22:49:06,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 22:49:06,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 22:49:06,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 22:49:06,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 22:49:06,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 22:49:06,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 22:49:06,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 22:49:06,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 22:49:06,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 22:49:06,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 22:49:06,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 22:49:06,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 22:49:06,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 22:49:06,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 22:49:06,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 22:49:06,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 22:49:06,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 22:49:06,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 22:49:06,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 22:49:06,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 22:49:06,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 22:49:06,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 22:49:06,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 22:49:06,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 22:49:06,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 22:49:06,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 22:49:06,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 22:49:06,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 22:49:06,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 22:49:06,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 22:49:06,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 22:49:06,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 22:49:06,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-10-15 22:49:06,180 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 22:49:06,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 22:49:06,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 22:49:06,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 22:49:06,182 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 22:49:06,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 22:49:06,183 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 22:49:06,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 22:49:06,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 22:49:06,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 22:49:06,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 22:49:06,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 22:49:06,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 22:49:06,185 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 22:49:06,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 22:49:06,186 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 22:49:06,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 22:49:06,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 22:49:06,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 22:49:06,187 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 22:49:06,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 22:49:06,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:49:06,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 22:49:06,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 22:49:06,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 22:49:06,188 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 22:49:06,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 22:49:06,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 22:49:06,188 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 22:49:06,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 22:49:06,473 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 22:49:06,476 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 22:49:06,478 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 22:49:06,478 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 22:49:06,479 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2020-10-15 22:49:06,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe29f563f/ba96e9aa47974170b125e5800a94ca7e/FLAG0c57add76 [2020-10-15 22:49:07,143 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 22:49:07,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2020-10-15 22:49:07,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe29f563f/ba96e9aa47974170b125e5800a94ca7e/FLAG0c57add76 [2020-10-15 22:49:07,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe29f563f/ba96e9aa47974170b125e5800a94ca7e [2020-10-15 22:49:07,405 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 22:49:07,407 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 22:49:07,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 22:49:07,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 22:49:07,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 22:49:07,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:49:07" (1/1) ... [2020-10-15 22:49:07,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ad56b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:49:07, skipping insertion in model container [2020-10-15 22:49:07,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:49:07" (1/1) ... [2020-10-15 22:49:07,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 22:49:07,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 22:49:08,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:49:08,165 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 22:49:08,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:49:08,450 INFO L208 MainTranslator]: Completed translation [2020-10-15 22:49:08,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:49:08 WrapperNode [2020-10-15 22:49:08,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 22:49:08,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 22:49:08,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 22:49:08,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 22:49:08,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:49:08" (1/1) ... [2020-10-15 22:49:08,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:49:08" (1/1) ... [2020-10-15 22:49:08,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 22:49:08,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 22:49:08,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 22:49:08,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 22:49:08,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:49:08" (1/1) ... [2020-10-15 22:49:08,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:49:08" (1/1) ... [2020-10-15 22:49:08,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:49:08" (1/1) ... [2020-10-15 22:49:08,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:49:08" (1/1) ... [2020-10-15 22:49:08,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:49:08" (1/1) ... [2020-10-15 22:49:08,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:49:08" (1/1) ... [2020-10-15 22:49:08,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:49:08" (1/1) ... [2020-10-15 22:49:08,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 22:49:08,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 22:49:08,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 22:49:08,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 22:49:08,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:49:08" (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 [2020-10-15 22:49:08,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 22:49:08,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 22:49:08,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 22:49:08,649 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2020-10-15 22:49:08,650 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2020-10-15 22:49:08,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 22:49:08,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 22:49:08,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 22:49:08,652 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 22:49:09,090 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 22:49:09,090 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 22:49:09,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:49:09 BoogieIcfgContainer [2020-10-15 22:49:09,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 22:49:09,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 22:49:09,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 22:49:09,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 22:49:09,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 10:49:07" (1/3) ... [2020-10-15 22:49:09,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3deb3bcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:49:09, skipping insertion in model container [2020-10-15 22:49:09,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:49:08" (2/3) ... [2020-10-15 22:49:09,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3deb3bcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:49:09, skipping insertion in model container [2020-10-15 22:49:09,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:49:09" (3/3) ... [2020-10-15 22:49:09,102 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-2.i [2020-10-15 22:49:09,112 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 22:49:09,112 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 22:49:09,121 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 22:49:09,122 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 22:49:09,148 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,148 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,148 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,148 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,149 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,149 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,149 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,150 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,150 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,150 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,151 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,151 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,151 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,151 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,152 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,152 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,152 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,152 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,153 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,153 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,153 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,157 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,157 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,157 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,158 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,158 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,158 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,158 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,159 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:49:09,182 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-15 22:49:09,203 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 22:49:09,204 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 22:49:09,204 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 22:49:09,204 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 22:49:09,204 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 22:49:09,204 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 22:49:09,205 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 22:49:09,205 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 22:49:09,219 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 22:49:09,222 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 85 transitions, 178 flow [2020-10-15 22:49:09,225 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 85 transitions, 178 flow [2020-10-15 22:49:09,227 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions, 178 flow [2020-10-15 22:49:09,278 INFO L129 PetriNetUnfolder]: 7/84 cut-off events. [2020-10-15 22:49:09,278 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-15 22:49:09,283 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 84 events. 7/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2020-10-15 22:49:09,286 INFO L117 LiptonReduction]: Number of co-enabled transitions 640 [2020-10-15 22:49:10,534 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-15 22:49:10,740 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-15 22:49:11,304 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-15 22:49:11,592 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-15 22:49:12,089 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-15 22:49:12,501 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 22:49:13,869 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 149 DAG size of output: 131 [2020-10-15 22:49:14,505 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-15 22:49:14,509 INFO L132 LiptonReduction]: Checked pairs total: 580 [2020-10-15 22:49:14,509 INFO L134 LiptonReduction]: Total number of compositions: 83 [2020-10-15 22:49:14,516 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 13 transitions, 34 flow [2020-10-15 22:49:14,525 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 17 states. [2020-10-15 22:49:14,527 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-10-15 22:49:14,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 22:49:14,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:49:14,535 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:49:14,535 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:49:14,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:49:14,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1450466956, now seen corresponding path program 1 times [2020-10-15 22:49:14,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:49:14,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071292697] [2020-10-15 22:49:14,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:49:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:49:14,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:49:14,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071292697] [2020-10-15 22:49:14,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:49:14,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:49:14,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421480313] [2020-10-15 22:49:14,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:49:14,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:49:14,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:49:14,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:49:14,789 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2020-10-15 22:49:14,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:49:14,826 INFO L93 Difference]: Finished difference Result 20 states and 36 transitions. [2020-10-15 22:49:14,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:49:14,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-15 22:49:14,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:49:14,838 INFO L225 Difference]: With dead ends: 20 [2020-10-15 22:49:14,838 INFO L226 Difference]: Without dead ends: 20 [2020-10-15 22:49:14,839 INFO L677 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 [2020-10-15 22:49:14,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-15 22:49:14,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-15 22:49:14,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-15 22:49:14,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 36 transitions. [2020-10-15 22:49:14,873 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 36 transitions. Word has length 8 [2020-10-15 22:49:14,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:49:14,874 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 36 transitions. [2020-10-15 22:49:14,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:49:14,874 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 36 transitions. [2020-10-15 22:49:14,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 22:49:14,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:49:14,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:49:14,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 22:49:14,875 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:49:14,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:49:14,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1984436175, now seen corresponding path program 1 times [2020-10-15 22:49:14,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:49:14,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670550886] [2020-10-15 22:49:14,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:49:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:49:14,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:49:14,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670550886] [2020-10-15 22:49:14,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822582654] [2020-10-15 22:49:14,950 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 [2020-10-15 22:49:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:49:15,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-15 22:49:15,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:49:15,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 22:49:15,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-15 22:49:15,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-10-15 22:49:15,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743401309] [2020-10-15 22:49:15,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:49:15,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:49:15,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:49:15,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:49:15,091 INFO L87 Difference]: Start difference. First operand 20 states and 36 transitions. Second operand 3 states. [2020-10-15 22:49:15,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:49:15,102 INFO L93 Difference]: Finished difference Result 28 states and 52 transitions. [2020-10-15 22:49:15,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:49:15,103 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-15 22:49:15,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:49:15,104 INFO L225 Difference]: With dead ends: 28 [2020-10-15 22:49:15,104 INFO L226 Difference]: Without dead ends: 28 [2020-10-15 22:49:15,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:49:15,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-15 22:49:15,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2020-10-15 22:49:15,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-15 22:49:15,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 44 transitions. [2020-10-15 22:49:15,111 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 44 transitions. Word has length 9 [2020-10-15 22:49:15,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:49:15,111 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 44 transitions. [2020-10-15 22:49:15,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:49:15,112 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 44 transitions. [2020-10-15 22:49:15,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 22:49:15,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:49:15,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:49:15,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-15 22:49:15,328 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:49:15,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:49:15,329 INFO L82 PathProgramCache]: Analyzing trace with hash -436238306, now seen corresponding path program 1 times [2020-10-15 22:49:15,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:49:15,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526046562] [2020-10-15 22:49:15,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:49:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:49:15,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:49:15,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526046562] [2020-10-15 22:49:15,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933698761] [2020-10-15 22:49:15,442 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 [2020-10-15 22:49:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:49:15,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-15 22:49:15,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:49:15,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 22:49:15,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 22:49:15,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-15 22:49:15,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958289937] [2020-10-15 22:49:15,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 22:49:15,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:49:15,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 22:49:15,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:49:15,551 INFO L87 Difference]: Start difference. First operand 24 states and 44 transitions. Second operand 6 states. [2020-10-15 22:49:15,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:49:15,669 INFO L93 Difference]: Finished difference Result 44 states and 84 transitions. [2020-10-15 22:49:15,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 22:49:15,670 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-15 22:49:15,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:49:15,672 INFO L225 Difference]: With dead ends: 44 [2020-10-15 22:49:15,672 INFO L226 Difference]: Without dead ends: 44 [2020-10-15 22:49:15,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-15 22:49:15,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-15 22:49:15,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2020-10-15 22:49:15,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-15 22:49:15,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 74 transitions. [2020-10-15 22:49:15,679 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 74 transitions. Word has length 11 [2020-10-15 22:49:15,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:49:15,680 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 74 transitions. [2020-10-15 22:49:15,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 22:49:15,680 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 74 transitions. [2020-10-15 22:49:15,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 22:49:15,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:49:15,681 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:49:15,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 22:49:15,896 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:49:15,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:49:15,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1899195462, now seen corresponding path program 2 times [2020-10-15 22:49:15,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:49:15,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998632930] [2020-10-15 22:49:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:49:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:49:15,980 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 22:49:15,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998632930] [2020-10-15 22:49:15,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237265114] [2020-10-15 22:49:15,981 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 [2020-10-15 22:49:16,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 22:49:16,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 22:49:16,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-15 22:49:16,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:49:16,084 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 22:49:16,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 22:49:16,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-15 22:49:16,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764999853] [2020-10-15 22:49:16,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 22:49:16,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:49:16,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 22:49:16,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:49:16,087 INFO L87 Difference]: Start difference. First operand 39 states and 74 transitions. Second operand 6 states. [2020-10-15 22:49:16,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:49:16,114 INFO L93 Difference]: Finished difference Result 54 states and 104 transitions. [2020-10-15 22:49:16,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:49:16,115 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-15 22:49:16,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:49:16,116 INFO L225 Difference]: With dead ends: 54 [2020-10-15 22:49:16,117 INFO L226 Difference]: Without dead ends: 54 [2020-10-15 22:49:16,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:49:16,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-15 22:49:16,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2020-10-15 22:49:16,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-15 22:49:16,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 94 transitions. [2020-10-15 22:49:16,125 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 94 transitions. Word has length 14 [2020-10-15 22:49:16,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:49:16,126 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 94 transitions. [2020-10-15 22:49:16,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 22:49:16,126 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 94 transitions. [2020-10-15 22:49:16,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 22:49:16,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:49:16,127 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:49:16,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 22:49:16,342 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:49:16,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:49:16,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1378033683, now seen corresponding path program 3 times [2020-10-15 22:49:16,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:49:16,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078771673] [2020-10-15 22:49:16,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:49:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:49:16,451 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 22:49:16,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078771673] [2020-10-15 22:49:16,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909970697] [2020-10-15 22:49:16,452 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 [2020-10-15 22:49:16,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 22:49:16,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 22:49:16,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-15 22:49:16,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:49:16,565 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 22:49:16,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 22:49:16,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2020-10-15 22:49:16,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625453411] [2020-10-15 22:49:16,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 22:49:16,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:49:16,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 22:49:16,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-15 22:49:16,568 INFO L87 Difference]: Start difference. First operand 49 states and 94 transitions. Second operand 9 states. [2020-10-15 22:49:16,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:49:16,843 INFO L93 Difference]: Finished difference Result 76 states and 148 transitions. [2020-10-15 22:49:16,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 22:49:16,847 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-10-15 22:49:16,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:49:16,848 INFO L225 Difference]: With dead ends: 76 [2020-10-15 22:49:16,848 INFO L226 Difference]: Without dead ends: 76 [2020-10-15 22:49:16,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2020-10-15 22:49:16,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-15 22:49:16,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2020-10-15 22:49:16,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-15 22:49:16,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 136 transitions. [2020-10-15 22:49:16,857 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 136 transitions. Word has length 16 [2020-10-15 22:49:16,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:49:16,857 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 136 transitions. [2020-10-15 22:49:16,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 22:49:16,858 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 136 transitions. [2020-10-15 22:49:16,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 22:49:16,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:49:16,859 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:49:17,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 22:49:17,068 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:49:17,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:49:17,069 INFO L82 PathProgramCache]: Analyzing trace with hash -115221563, now seen corresponding path program 4 times [2020-10-15 22:49:17,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:49:17,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125522279] [2020-10-15 22:49:17,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:49:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:49:17,180 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 22:49:17,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125522279] [2020-10-15 22:49:17,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865230723] [2020-10-15 22:49:17,182 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 [2020-10-15 22:49:17,242 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 22:49:17,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 22:49:17,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-15 22:49:17,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:49:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 22:49:17,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 22:49:17,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-15 22:49:17,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981912272] [2020-10-15 22:49:17,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 22:49:17,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:49:17,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 22:49:17,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-15 22:49:17,286 INFO L87 Difference]: Start difference. First operand 70 states and 136 transitions. Second operand 8 states. [2020-10-15 22:49:17,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:49:17,320 INFO L93 Difference]: Finished difference Result 88 states and 172 transitions. [2020-10-15 22:49:17,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 22:49:17,321 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-15 22:49:17,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:49:17,322 INFO L225 Difference]: With dead ends: 88 [2020-10-15 22:49:17,322 INFO L226 Difference]: Without dead ends: 88 [2020-10-15 22:49:17,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-15 22:49:17,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-15 22:49:17,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82. [2020-10-15 22:49:17,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-15 22:49:17,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 160 transitions. [2020-10-15 22:49:17,332 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 160 transitions. Word has length 19 [2020-10-15 22:49:17,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:49:17,332 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 160 transitions. [2020-10-15 22:49:17,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 22:49:17,332 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 160 transitions. [2020-10-15 22:49:17,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 22:49:17,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:49:17,334 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:49:17,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-15 22:49:17,547 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:49:17,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:49:17,548 INFO L82 PathProgramCache]: Analyzing trace with hash -882362510, now seen corresponding path program 5 times [2020-10-15 22:49:17,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:49:17,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000489032] [2020-10-15 22:49:17,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:49:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:49:17,619 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 22:49:17,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000489032] [2020-10-15 22:49:17,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024001365] [2020-10-15 22:49:17,620 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 [2020-10-15 22:49:17,684 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-15 22:49:17,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 22:49:17,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-15 22:49:17,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:49:17,750 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-15 22:49:17,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 22:49:17,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2020-10-15 22:49:17,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570450856] [2020-10-15 22:49:17,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 22:49:17,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:49:17,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 22:49:17,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-15 22:49:17,752 INFO L87 Difference]: Start difference. First operand 82 states and 160 transitions. Second operand 12 states. [2020-10-15 22:49:18,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:49:18,279 INFO L93 Difference]: Finished difference Result 116 states and 228 transitions. [2020-10-15 22:49:18,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-15 22:49:18,280 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2020-10-15 22:49:18,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:49:18,282 INFO L225 Difference]: With dead ends: 116 [2020-10-15 22:49:18,282 INFO L226 Difference]: Without dead ends: 116 [2020-10-15 22:49:18,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=420, Invalid=840, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 22:49:18,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-15 22:49:18,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 109. [2020-10-15 22:49:18,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-15 22:49:18,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 214 transitions. [2020-10-15 22:49:18,293 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 214 transitions. Word has length 21 [2020-10-15 22:49:18,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:49:18,294 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 214 transitions. [2020-10-15 22:49:18,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 22:49:18,294 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 214 transitions. [2020-10-15 22:49:18,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-15 22:49:18,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:49:18,296 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:49:18,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 22:49:18,501 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:49:18,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:49:18,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1928037594, now seen corresponding path program 6 times [2020-10-15 22:49:18,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:49:18,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153975296] [2020-10-15 22:49:18,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:49:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:49:18,589 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 22:49:18,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153975296] [2020-10-15 22:49:18,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203325646] [2020-10-15 22:49:18,590 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 [2020-10-15 22:49:18,696 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-15 22:49:18,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 22:49:18,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-15 22:49:18,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:49:18,779 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-15 22:49:18,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 22:49:18,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2020-10-15 22:49:18,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547375658] [2020-10-15 22:49:18,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 22:49:18,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:49:18,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 22:49:18,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-10-15 22:49:18,782 INFO L87 Difference]: Start difference. First operand 109 states and 214 transitions. Second operand 14 states. [2020-10-15 22:49:19,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:49:19,542 INFO L93 Difference]: Finished difference Result 148 states and 292 transitions. [2020-10-15 22:49:19,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-15 22:49:19,543 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 24 [2020-10-15 22:49:19,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:49:19,544 INFO L225 Difference]: With dead ends: 148 [2020-10-15 22:49:19,545 INFO L226 Difference]: Without dead ends: 148 [2020-10-15 22:49:19,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=756, Invalid=1596, Unknown=0, NotChecked=0, Total=2352 [2020-10-15 22:49:19,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-15 22:49:19,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 140. [2020-10-15 22:49:19,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-15 22:49:19,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 276 transitions. [2020-10-15 22:49:19,568 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 276 transitions. Word has length 24 [2020-10-15 22:49:19,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:49:19,568 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 276 transitions. [2020-10-15 22:49:19,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 22:49:19,568 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 276 transitions. [2020-10-15 22:49:19,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 22:49:19,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:49:19,572 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:49:19,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 22:49:19,781 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:49:19,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:49:19,782 INFO L82 PathProgramCache]: Analyzing trace with hash 867592876, now seen corresponding path program 7 times [2020-10-15 22:49:19,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:49:19,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357285671] [2020-10-15 22:49:19,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:49:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:49:19,890 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 22:49:19,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357285671] [2020-10-15 22:49:19,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965314125] [2020-10-15 22:49:19,891 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 [2020-10-15 22:49:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:49:19,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 22:49:19,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:49:19,978 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 22:49:19,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 22:49:19,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-10-15 22:49:19,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119872172] [2020-10-15 22:49:19,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 22:49:19,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:49:19,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 22:49:19,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-15 22:49:19,981 INFO L87 Difference]: Start difference. First operand 140 states and 276 transitions. Second operand 11 states. [2020-10-15 22:49:20,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:49:20,030 INFO L93 Difference]: Finished difference Result 164 states and 324 transitions. [2020-10-15 22:49:20,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 22:49:20,030 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-15 22:49:20,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:49:20,032 INFO L225 Difference]: With dead ends: 164 [2020-10-15 22:49:20,032 INFO L226 Difference]: Without dead ends: 164 [2020-10-15 22:49:20,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-15 22:49:20,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-15 22:49:20,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 156. [2020-10-15 22:49:20,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-15 22:49:20,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 308 transitions. [2020-10-15 22:49:20,041 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 308 transitions. Word has length 27 [2020-10-15 22:49:20,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:49:20,041 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 308 transitions. [2020-10-15 22:49:20,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 22:49:20,041 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 308 transitions. [2020-10-15 22:49:20,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 22:49:20,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:49:20,043 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:49:20,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-10-15 22:49:20,258 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:49:20,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:49:20,258 INFO L82 PathProgramCache]: Analyzing trace with hash -441398951, now seen corresponding path program 8 times [2020-10-15 22:49:20,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:49:20,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203414133] [2020-10-15 22:49:20,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:49:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:49:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 22:49:20,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203414133] [2020-10-15 22:49:20,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040659409] [2020-10-15 22:49:20,360 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 [2020-10-15 22:49:20,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 22:49:20,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 22:49:20,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 22:49:20,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:49:20,471 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 22:49:20,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 22:49:20,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-10-15 22:49:20,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931044124] [2020-10-15 22:49:20,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 22:49:20,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:49:20,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 22:49:20,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-15 22:49:20,474 INFO L87 Difference]: Start difference. First operand 156 states and 308 transitions. Second operand 12 states. [2020-10-15 22:49:20,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:49:20,527 INFO L93 Difference]: Finished difference Result 180 states and 356 transitions. [2020-10-15 22:49:20,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 22:49:20,529 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2020-10-15 22:49:20,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:49:20,531 INFO L225 Difference]: With dead ends: 180 [2020-10-15 22:49:20,531 INFO L226 Difference]: Without dead ends: 180 [2020-10-15 22:49:20,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-15 22:49:20,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-15 22:49:20,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 172. [2020-10-15 22:49:20,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-15 22:49:20,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 340 transitions. [2020-10-15 22:49:20,551 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 340 transitions. Word has length 29 [2020-10-15 22:49:20,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:49:20,551 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 340 transitions. [2020-10-15 22:49:20,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 22:49:20,551 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 340 transitions. [2020-10-15 22:49:20,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-15 22:49:20,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:49:20,553 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:49:20,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 22:49:20,767 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:49:20,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:49:20,767 INFO L82 PathProgramCache]: Analyzing trace with hash 42873030, now seen corresponding path program 9 times [2020-10-15 22:49:20,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:49:20,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853882744] [2020-10-15 22:49:20,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:49:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:49:20,897 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 22:49:20,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853882744] [2020-10-15 22:49:20,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859314565] [2020-10-15 22:49:20,898 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 [2020-10-15 22:49:21,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-15 22:49:21,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 22:49:21,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 22:49:21,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:49:21,178 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-15 22:49:21,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 22:49:21,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2020-10-15 22:49:21,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611347990] [2020-10-15 22:49:21,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 22:49:21,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:49:21,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 22:49:21,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-10-15 22:49:21,181 INFO L87 Difference]: Start difference. First operand 172 states and 340 transitions. Second operand 18 states. [2020-10-15 22:49:22,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:49:22,777 INFO L93 Difference]: Finished difference Result 220 states and 436 transitions. [2020-10-15 22:49:22,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-10-15 22:49:22,778 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 31 [2020-10-15 22:49:22,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:49:22,780 INFO L225 Difference]: With dead ends: 220 [2020-10-15 22:49:22,780 INFO L226 Difference]: Without dead ends: 220 [2020-10-15 22:49:22,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1824 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1848, Invalid=4158, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 22:49:22,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-15 22:49:22,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 211. [2020-10-15 22:49:22,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-15 22:49:22,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 418 transitions. [2020-10-15 22:49:22,792 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 418 transitions. Word has length 31 [2020-10-15 22:49:22,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:49:22,792 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 418 transitions. [2020-10-15 22:49:22,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 22:49:22,808 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 418 transitions. [2020-10-15 22:49:22,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-15 22:49:22,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:49:22,810 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:49:23,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 22:49:23,025 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:49:23,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:49:23,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1510869138, now seen corresponding path program 10 times [2020-10-15 22:49:23,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:49:23,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28815944] [2020-10-15 22:49:23,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:49:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:49:23,149 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-15 22:49:23,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28815944] [2020-10-15 22:49:23,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180195437] [2020-10-15 22:49:23,150 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 [2020-10-15 22:49:23,215 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 22:49:23,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 22:49:23,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 22:49:23,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:49:23,251 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-15 22:49:23,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 22:49:23,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-10-15 22:49:23,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689848187] [2020-10-15 22:49:23,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 22:49:23,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:49:23,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 22:49:23,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-15 22:49:23,253 INFO L87 Difference]: Start difference. First operand 211 states and 418 transitions. Second operand 14 states. [2020-10-15 22:49:23,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:49:23,307 INFO L93 Difference]: Finished difference Result 238 states and 472 transitions. [2020-10-15 22:49:23,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 22:49:23,310 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-10-15 22:49:23,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:49:23,312 INFO L225 Difference]: With dead ends: 238 [2020-10-15 22:49:23,312 INFO L226 Difference]: Without dead ends: 238 [2020-10-15 22:49:23,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-15 22:49:23,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-15 22:49:23,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 229. [2020-10-15 22:49:23,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-15 22:49:23,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 454 transitions. [2020-10-15 22:49:23,319 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 454 transitions. Word has length 34 [2020-10-15 22:49:23,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:49:23,320 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 454 transitions. [2020-10-15 22:49:23,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 22:49:23,320 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 454 transitions. [2020-10-15 22:49:23,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-15 22:49:23,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:49:23,325 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:49:23,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-15 22:49:23,526 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:49:23,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:49:23,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1014578501, now seen corresponding path program 11 times [2020-10-15 22:49:23,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:49:23,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559620261] [2020-10-15 22:49:23,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:49:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:49:23,679 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-15 22:49:23,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559620261] [2020-10-15 22:49:23,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785940936] [2020-10-15 22:49:23,680 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 [2020-10-15 22:49:23,739 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-10-15 22:49:23,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 22:49:23,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 22:49:23,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:49:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-15 22:49:23,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 22:49:23,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2020-10-15 22:49:23,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90579127] [2020-10-15 22:49:23,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-15 22:49:23,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:49:23,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-15 22:49:23,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2020-10-15 22:49:23,864 INFO L87 Difference]: Start difference. First operand 229 states and 454 transitions. Second operand 21 states. [2020-10-15 22:49:26,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:49:26,641 INFO L93 Difference]: Finished difference Result 284 states and 564 transitions. [2020-10-15 22:49:26,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2020-10-15 22:49:26,641 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 36 [2020-10-15 22:49:26,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:49:26,643 INFO L225 Difference]: With dead ends: 284 [2020-10-15 22:49:26,643 INFO L226 Difference]: Without dead ends: 284 [2020-10-15 22:49:26,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3563 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3276, Invalid=7644, Unknown=0, NotChecked=0, Total=10920 [2020-10-15 22:49:26,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-15 22:49:26,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 274. [2020-10-15 22:49:26,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-15 22:49:26,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 544 transitions. [2020-10-15 22:49:26,654 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 544 transitions. Word has length 36 [2020-10-15 22:49:26,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:49:26,655 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 544 transitions. [2020-10-15 22:49:26,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-15 22:49:26,655 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 544 transitions. [2020-10-15 22:49:26,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-15 22:49:26,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:49:26,656 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:49:26,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-15 22:49:26,870 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:49:26,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:49:26,870 INFO L82 PathProgramCache]: Analyzing trace with hash -299405075, now seen corresponding path program 12 times [2020-10-15 22:49:26,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:49:26,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419257766] [2020-10-15 22:49:26,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:49:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:49:27,036 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-15 22:49:27,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419257766] [2020-10-15 22:49:27,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214349060] [2020-10-15 22:49:27,037 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 [2020-10-15 22:49:27,146 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-10-15 22:49:27,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 22:49:27,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 22:49:27,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:49:27,265 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-15 22:49:27,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 22:49:27,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 23 [2020-10-15 22:49:27,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438385928] [2020-10-15 22:49:27,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-15 22:49:27,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:49:27,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-15 22:49:27,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2020-10-15 22:49:27,266 INFO L87 Difference]: Start difference. First operand 274 states and 544 transitions. Second operand 23 states. [2020-10-15 22:49:30,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:49:30,950 INFO L93 Difference]: Finished difference Result 334 states and 664 transitions. [2020-10-15 22:49:30,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2020-10-15 22:49:30,952 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 39 [2020-10-15 22:49:30,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:49:30,955 INFO L225 Difference]: With dead ends: 334 [2020-10-15 22:49:30,955 INFO L226 Difference]: Without dead ends: 334 [2020-10-15 22:49:30,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5452 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4725, Invalid=11277, Unknown=0, NotChecked=0, Total=16002 [2020-10-15 22:49:30,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-10-15 22:49:30,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 323. [2020-10-15 22:49:30,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-10-15 22:49:30,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 642 transitions. [2020-10-15 22:49:30,968 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 642 transitions. Word has length 39 [2020-10-15 22:49:30,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:49:30,968 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 642 transitions. [2020-10-15 22:49:30,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-15 22:49:30,968 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 642 transitions. [2020-10-15 22:49:30,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-15 22:49:30,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:49:30,970 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:49:31,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-15 22:49:31,184 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:49:31,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:49:31,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1077564853, now seen corresponding path program 13 times [2020-10-15 22:49:31,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:49:31,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144483521] [2020-10-15 22:49:31,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:49:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:49:31,341 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-15 22:49:31,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144483521] [2020-10-15 22:49:31,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059468193] [2020-10-15 22:49:31,342 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 [2020-10-15 22:49:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:49:31,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-15 22:49:31,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:49:31,463 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-15 22:49:31,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 22:49:31,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-10-15 22:49:31,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516206015] [2020-10-15 22:49:31,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 22:49:31,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:49:31,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 22:49:31,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-15 22:49:31,466 INFO L87 Difference]: Start difference. First operand 323 states and 642 transitions. Second operand 17 states. [2020-10-15 22:49:31,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:49:31,525 INFO L93 Difference]: Finished difference Result 356 states and 708 transitions. [2020-10-15 22:49:31,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 22:49:31,529 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 42 [2020-10-15 22:49:31,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:49:31,532 INFO L225 Difference]: With dead ends: 356 [2020-10-15 22:49:31,532 INFO L226 Difference]: Without dead ends: 356 [2020-10-15 22:49:31,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-15 22:49:31,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-10-15 22:49:31,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 345. [2020-10-15 22:49:31,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-10-15 22:49:31,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 686 transitions. [2020-10-15 22:49:31,542 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 686 transitions. Word has length 42 [2020-10-15 22:49:31,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:49:31,542 INFO L481 AbstractCegarLoop]: Abstraction has 345 states and 686 transitions. [2020-10-15 22:49:31,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 22:49:31,542 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 686 transitions. [2020-10-15 22:49:31,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-15 22:49:31,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:49:31,544 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:49:31,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 22:49:31,757 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:49:31,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:49:31,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1718191106, now seen corresponding path program 14 times [2020-10-15 22:49:31,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:49:31,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978270063] [2020-10-15 22:49:31,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:49:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:49:32,001 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-15 22:49:32,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978270063] [2020-10-15 22:49:32,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587042219] [2020-10-15 22:49:32,002 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 [2020-10-15 22:49:32,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 22:49:32,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 22:49:32,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-15 22:49:32,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:49:32,166 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-15 22:49:32,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 22:49:32,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-10-15 22:49:32,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375545108] [2020-10-15 22:49:32,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 22:49:32,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:49:32,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 22:49:32,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-15 22:49:32,169 INFO L87 Difference]: Start difference. First operand 345 states and 686 transitions. Second operand 18 states. [2020-10-15 22:49:32,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:49:32,241 INFO L93 Difference]: Finished difference Result 378 states and 752 transitions. [2020-10-15 22:49:32,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 22:49:32,242 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 44 [2020-10-15 22:49:32,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:49:32,244 INFO L225 Difference]: With dead ends: 378 [2020-10-15 22:49:32,244 INFO L226 Difference]: Without dead ends: 378 [2020-10-15 22:49:32,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-15 22:49:32,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-10-15 22:49:32,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 367. [2020-10-15 22:49:32,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-10-15 22:49:32,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 730 transitions. [2020-10-15 22:49:32,254 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 730 transitions. Word has length 44 [2020-10-15 22:49:32,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:49:32,255 INFO L481 AbstractCegarLoop]: Abstraction has 367 states and 730 transitions. [2020-10-15 22:49:32,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 22:49:32,255 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 730 transitions. [2020-10-15 22:49:32,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-15 22:49:32,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:49:32,256 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:49:32,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-15 22:49:32,471 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:49:32,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:49:32,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1115270385, now seen corresponding path program 15 times [2020-10-15 22:49:32,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:49:32,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991258083] [2020-10-15 22:49:32,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:49:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:49:32,685 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-15 22:49:32,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991258083] [2020-10-15 22:49:32,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024017573] [2020-10-15 22:49:32,686 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 [2020-10-15 22:49:32,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-10-15 22:49:32,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 22:49:32,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 22:49:32,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:49:32,926 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 15 proven. 36 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-10-15 22:49:32,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 22:49:32,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11] total 27 [2020-10-15 22:49:32,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857067251] [2020-10-15 22:49:32,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-15 22:49:32,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:49:32,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-15 22:49:32,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2020-10-15 22:49:32,928 INFO L87 Difference]: Start difference. First operand 367 states and 730 transitions. Second operand 27 states. [2020-10-15 22:49:39,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:49:39,169 INFO L93 Difference]: Finished difference Result 436 states and 868 transitions. [2020-10-15 22:49:39,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2020-10-15 22:49:39,170 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 46 [2020-10-15 22:49:39,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:49:39,172 INFO L225 Difference]: With dead ends: 436 [2020-10-15 22:49:39,173 INFO L226 Difference]: Without dead ends: 436 [2020-10-15 22:49:39,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10431 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=8415, Invalid=20655, Unknown=0, NotChecked=0, Total=29070 [2020-10-15 22:49:39,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-10-15 22:49:39,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 424. [2020-10-15 22:49:39,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-10-15 22:49:39,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 844 transitions. [2020-10-15 22:49:39,188 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 844 transitions. Word has length 46 [2020-10-15 22:49:39,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:49:39,188 INFO L481 AbstractCegarLoop]: Abstraction has 424 states and 844 transitions. [2020-10-15 22:49:39,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-15 22:49:39,189 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 844 transitions. [2020-10-15 22:49:39,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-15 22:49:39,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:49:39,190 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:49:39,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-15 22:49:39,403 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:49:39,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:49:39,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1391947135, now seen corresponding path program 16 times [2020-10-15 22:49:39,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:49:39,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305649350] [2020-10-15 22:49:39,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:49:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:49:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-15 22:49:39,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305649350] [2020-10-15 22:49:39,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474663108] [2020-10-15 22:49:39,634 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 [2020-10-15 22:49:39,720 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 22:49:39,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 22:49:39,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-15 22:49:39,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:49:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-15 22:49:39,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 22:49:39,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-10-15 22:49:39,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132929484] [2020-10-15 22:49:39,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 22:49:39,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:49:39,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 22:49:39,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-15 22:49:39,750 INFO L87 Difference]: Start difference. First operand 424 states and 844 transitions. Second operand 20 states. [2020-10-15 22:49:39,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:49:39,835 INFO L93 Difference]: Finished difference Result 460 states and 916 transitions. [2020-10-15 22:49:39,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 22:49:39,836 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 49 [2020-10-15 22:49:39,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:49:39,838 INFO L225 Difference]: With dead ends: 460 [2020-10-15 22:49:39,839 INFO L226 Difference]: Without dead ends: 460 [2020-10-15 22:49:39,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-15 22:49:39,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-15 22:49:39,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 448. [2020-10-15 22:49:39,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-15 22:49:39,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 892 transitions. [2020-10-15 22:49:39,848 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 892 transitions. Word has length 49 [2020-10-15 22:49:39,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:49:39,848 INFO L481 AbstractCegarLoop]: Abstraction has 448 states and 892 transitions. [2020-10-15 22:49:39,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 22:49:39,848 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 892 transitions. [2020-10-15 22:49:39,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 22:49:39,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:49:39,850 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:49:40,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-15 22:49:40,064 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:49:40,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:49:40,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1588788882, now seen corresponding path program 17 times [2020-10-15 22:49:40,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:49:40,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437304140] [2020-10-15 22:49:40,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:49:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:49:40,328 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-15 22:49:40,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437304140] [2020-10-15 22:49:40,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510739610] [2020-10-15 22:49:40,328 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 [2020-10-15 22:49:40,425 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2020-10-15 22:49:40,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 22:49:40,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 22:49:40,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:49:40,612 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 17 proven. 45 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2020-10-15 22:49:40,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 22:49:40,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12] total 30 [2020-10-15 22:49:40,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723077895] [2020-10-15 22:49:40,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-15 22:49:40,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:49:40,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-15 22:49:40,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=615, Unknown=0, NotChecked=0, Total=870 [2020-10-15 22:49:40,615 INFO L87 Difference]: Start difference. First operand 448 states and 892 transitions. Second operand 30 states. [2020-10-15 22:49:49,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:49:49,759 INFO L93 Difference]: Finished difference Result 524 states and 1044 transitions. [2020-10-15 22:49:49,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2020-10-15 22:49:49,760 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 51 [2020-10-15 22:49:49,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:49:49,763 INFO L225 Difference]: With dead ends: 524 [2020-10-15 22:49:49,763 INFO L226 Difference]: Without dead ends: 524 [2020-10-15 22:49:49,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16280 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=12540, Invalid=31350, Unknown=0, NotChecked=0, Total=43890 [2020-10-15 22:49:49,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-10-15 22:49:49,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 511. [2020-10-15 22:49:49,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-10-15 22:49:49,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 1018 transitions. [2020-10-15 22:49:49,775 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 1018 transitions. Word has length 51 [2020-10-15 22:49:49,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:49:49,775 INFO L481 AbstractCegarLoop]: Abstraction has 511 states and 1018 transitions. [2020-10-15 22:49:49,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-15 22:49:49,775 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 1018 transitions. [2020-10-15 22:49:49,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 22:49:49,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:49:49,777 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:49:49,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 22:49:49,992 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:49:49,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:49:49,992 INFO L82 PathProgramCache]: Analyzing trace with hash 835392874, now seen corresponding path program 18 times [2020-10-15 22:49:49,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:49:49,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856412518] [2020-10-15 22:49:49,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:49:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:49:50,268 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-15 22:49:50,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856412518] [2020-10-15 22:49:50,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171277151] [2020-10-15 22:49:50,269 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 [2020-10-15 22:49:50,364 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-10-15 22:49:50,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 22:49:50,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 22:49:50,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:49:50,599 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 18 proven. 55 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-15 22:49:50,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 22:49:50,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13] total 32 [2020-10-15 22:49:50,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129052828] [2020-10-15 22:49:50,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-15 22:49:50,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:49:50,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-15 22:49:50,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2020-10-15 22:49:50,601 INFO L87 Difference]: Start difference. First operand 511 states and 1018 transitions. Second operand 32 states. [2020-10-15 22:50:02,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:50:02,741 INFO L93 Difference]: Finished difference Result 592 states and 1180 transitions. [2020-10-15 22:50:02,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2020-10-15 22:50:02,742 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 54 [2020-10-15 22:50:02,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:50:02,744 INFO L225 Difference]: With dead ends: 592 [2020-10-15 22:50:02,745 INFO L226 Difference]: Without dead ends: 592 [2020-10-15 22:50:02,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21934 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=16380, Invalid=41460, Unknown=0, NotChecked=0, Total=57840 [2020-10-15 22:50:02,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-10-15 22:50:02,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 578. [2020-10-15 22:50:02,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-10-15 22:50:02,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1152 transitions. [2020-10-15 22:50:02,758 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1152 transitions. Word has length 54 [2020-10-15 22:50:02,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:50:02,759 INFO L481 AbstractCegarLoop]: Abstraction has 578 states and 1152 transitions. [2020-10-15 22:50:02,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-15 22:50:02,759 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1152 transitions. [2020-10-15 22:50:02,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 22:50:02,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:50:02,761 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:50:02,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 22:50:02,975 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:50:02,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:50:02,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1589265368, now seen corresponding path program 19 times [2020-10-15 22:50:02,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:50:02,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663917888] [2020-10-15 22:50:02,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:50:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:50:03,305 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-15 22:50:03,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663917888] [2020-10-15 22:50:03,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074772510] [2020-10-15 22:50:03,306 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 [2020-10-15 22:50:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:50:03,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-15 22:50:03,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:50:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-15 22:50:03,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 22:50:03,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-10-15 22:50:03,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642856717] [2020-10-15 22:50:03,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-15 22:50:03,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:50:03,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-15 22:50:03,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-15 22:50:03,414 INFO L87 Difference]: Start difference. First operand 578 states and 1152 transitions. Second operand 23 states. [2020-10-15 22:50:03,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:50:03,503 INFO L93 Difference]: Finished difference Result 606 states and 1208 transitions. [2020-10-15 22:50:03,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 22:50:03,504 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 57 [2020-10-15 22:50:03,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:50:03,507 INFO L225 Difference]: With dead ends: 606 [2020-10-15 22:50:03,507 INFO L226 Difference]: Without dead ends: 606 [2020-10-15 22:50:03,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-15 22:50:03,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-10-15 22:50:03,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 606. [2020-10-15 22:50:03,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 606 states. [2020-10-15 22:50:03,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1208 transitions. [2020-10-15 22:50:03,518 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1208 transitions. Word has length 57 [2020-10-15 22:50:03,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:50:03,518 INFO L481 AbstractCegarLoop]: Abstraction has 606 states and 1208 transitions. [2020-10-15 22:50:03,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-15 22:50:03,518 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1208 transitions. [2020-10-15 22:50:03,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 22:50:03,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:50:03,520 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:50:03,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-15 22:50:03,734 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:50:03,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:50:03,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1130959339, now seen corresponding path program 20 times [2020-10-15 22:50:03,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:50:03,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538139527] [2020-10-15 22:50:03,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:50:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:50:03,881 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-10-15 22:50:03,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538139527] [2020-10-15 22:50:03,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482732707] [2020-10-15 22:50:03,882 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 [2020-10-15 22:50:03,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 22:50:03,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 22:50:03,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 53 conjunts are in the unsatisfiable core [2020-10-15 22:50:03,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:50:05,765 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 466 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:50:05,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 22:50:05,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 52] total 66 [2020-10-15 22:50:05,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479388034] [2020-10-15 22:50:05,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-10-15 22:50:05,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:50:05,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-10-15 22:50:05,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=881, Invalid=3409, Unknown=0, NotChecked=0, Total=4290 [2020-10-15 22:50:05,768 INFO L87 Difference]: Start difference. First operand 606 states and 1208 transitions. Second operand 66 states. [2020-10-15 22:52:40,550 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-10-15 22:54:33,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:54:33,525 INFO L93 Difference]: Finished difference Result 30049 states and 60080 transitions. [2020-10-15 22:54:33,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2384 states. [2020-10-15 22:54:33,527 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 59 [2020-10-15 22:54:33,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:54:33,646 INFO L225 Difference]: With dead ends: 30049 [2020-10-15 22:54:33,646 INFO L226 Difference]: Without dead ends: 30025 [2020-10-15 22:54:33,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2769 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 2393 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3796224 ImplicationChecksByTransitivity, 237.9s TimeCoverageRelationStatistics Valid=1405807, Invalid=4327823, Unknown=0, NotChecked=0, Total=5733630 [2020-10-15 22:54:33,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30025 states. [2020-10-15 22:54:34,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30025 to 1198. [2020-10-15 22:54:34,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1198 states. [2020-10-15 22:54:34,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 2520 transitions. [2020-10-15 22:54:34,062 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 2520 transitions. Word has length 59 [2020-10-15 22:54:34,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:54:34,063 INFO L481 AbstractCegarLoop]: Abstraction has 1198 states and 2520 transitions. [2020-10-15 22:54:34,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-10-15 22:54:34,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 2520 transitions. [2020-10-15 22:54:34,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 22:54:34,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:54:34,066 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:54:34,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-15 22:54:34,279 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:54:34,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:54:34,280 INFO L82 PathProgramCache]: Analyzing trace with hash -669634640, now seen corresponding path program 21 times [2020-10-15 22:54:34,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:54:34,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977482965] [2020-10-15 22:54:34,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:54:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:54:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 20 proven. 78 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-10-15 22:54:34,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977482965] [2020-10-15 22:54:34,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310659479] [2020-10-15 22:54:34,663 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 [2020-10-15 22:54:34,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-10-15 22:54:34,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 22:54:34,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-15 22:54:34,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:54:34,877 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 20 proven. 78 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-10-15 22:54:34,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 22:54:34,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-10-15 22:54:34,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65360178] [2020-10-15 22:54:34,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 22:54:34,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:54:34,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 22:54:34,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-15 22:54:34,881 INFO L87 Difference]: Start difference. First operand 1198 states and 2520 transitions. Second operand 16 states. [2020-10-15 22:54:35,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:54:35,069 INFO L93 Difference]: Finished difference Result 1382 states and 2810 transitions. [2020-10-15 22:54:35,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 22:54:35,071 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 60 [2020-10-15 22:54:35,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:54:35,080 INFO L225 Difference]: With dead ends: 1382 [2020-10-15 22:54:35,080 INFO L226 Difference]: Without dead ends: 1382 [2020-10-15 22:54:35,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-15 22:54:35,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2020-10-15 22:54:35,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1280. [2020-10-15 22:54:35,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1280 states. [2020-10-15 22:54:35,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 2684 transitions. [2020-10-15 22:54:35,112 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 2684 transitions. Word has length 60 [2020-10-15 22:54:35,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:54:35,113 INFO L481 AbstractCegarLoop]: Abstraction has 1280 states and 2684 transitions. [2020-10-15 22:54:35,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 22:54:35,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 2684 transitions. [2020-10-15 22:54:35,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 22:54:35,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:54:35,117 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:54:35,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 22:54:35,330 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:54:35,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:54:35,331 INFO L82 PathProgramCache]: Analyzing trace with hash 746529141, now seen corresponding path program 22 times [2020-10-15 22:54:35,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:54:35,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540795305] [2020-10-15 22:54:35,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:54:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:54:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 20 proven. 91 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-10-15 22:54:35,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540795305] [2020-10-15 22:54:35,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626325643] [2020-10-15 22:54:35,721 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 [2020-10-15 22:54:35,812 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 22:54:35,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 22:54:35,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 55 conjunts are in the unsatisfiable core [2020-10-15 22:54:35,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:54:39,716 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 491 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:54:39,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 22:54:39,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 54] total 70 [2020-10-15 22:54:39,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513802974] [2020-10-15 22:54:39,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-10-15 22:54:39,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:54:39,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-10-15 22:54:39,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=979, Invalid=3851, Unknown=0, NotChecked=0, Total=4830 [2020-10-15 22:54:39,722 INFO L87 Difference]: Start difference. First operand 1280 states and 2684 transitions. Second operand 70 states. [2020-10-15 22:54:45,380 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-10-15 22:58:19,846 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 10 Received shutdown request... [2020-10-15 23:02:32,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2520 states. [2020-10-15 23:02:33,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-15 23:02:33,073 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-15 23:02:33,077 WARN L235 ceAbstractionStarter]: Timeout [2020-10-15 23:02:33,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 11:02:33 BasicIcfg [2020-10-15 23:02:33,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 23:02:33,079 INFO L168 Benchmark]: Toolchain (without parser) took 805672.36 ms. Allocated memory was 251.7 MB in the beginning and 3.5 GB in the end (delta: 3.3 GB). Free memory was 207.0 MB in the beginning and 2.4 GB in the end (delta: -2.1 GB). Peak memory consumption was 1.1 GB. Max. memory is 14.2 GB. [2020-10-15 23:02:33,079 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 23:02:33,079 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1044.71 ms. Allocated memory was 251.7 MB in the beginning and 315.6 MB in the end (delta: 64.0 MB). Free memory was 207.0 MB in the beginning and 217.4 MB in the end (delta: -10.4 MB). Peak memory consumption was 64.0 MB. Max. memory is 14.2 GB. [2020-10-15 23:02:33,080 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.62 ms. Allocated memory is still 315.6 MB. Free memory was 217.4 MB in the beginning and 214.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 23:02:33,080 INFO L168 Benchmark]: Boogie Preprocessor took 38.71 ms. Allocated memory is still 315.6 MB. Free memory was 214.9 MB in the beginning and 212.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 23:02:33,080 INFO L168 Benchmark]: RCFGBuilder took 509.35 ms. Allocated memory is still 315.6 MB. Free memory was 212.4 MB in the beginning and 185.5 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. [2020-10-15 23:02:33,081 INFO L168 Benchmark]: TraceAbstraction took 803982.95 ms. Allocated memory was 315.6 MB in the beginning and 3.5 GB in the end (delta: 3.2 GB). Free memory was 185.5 MB in the beginning and 2.4 GB in the end (delta: -2.2 GB). Peak memory consumption was 1.1 GB. Max. memory is 14.2 GB. [2020-10-15 23:02:33,084 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 1044.71 ms. Allocated memory was 251.7 MB in the beginning and 315.6 MB in the end (delta: 64.0 MB). Free memory was 207.0 MB in the beginning and 217.4 MB in the end (delta: -10.4 MB). Peak memory consumption was 64.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 90.62 ms. Allocated memory is still 315.6 MB. Free memory was 217.4 MB in the beginning and 214.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 38.71 ms. Allocated memory is still 315.6 MB. Free memory was 214.9 MB in the beginning and 212.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 509.35 ms. Allocated memory is still 315.6 MB. Free memory was 212.4 MB in the beginning and 185.5 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 803982.95 ms. Allocated memory was 315.6 MB in the beginning and 3.5 GB in the end (delta: 3.2 GB). Free memory was 185.5 MB in the beginning and 2.4 GB in the end (delta: -2.2 GB). Peak memory consumption was 1.1 GB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 432 VarBasedMoverChecksPositive, 9 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 9 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 12 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.2s, 82 PlacesBefore, 15 PlacesAfterwards, 85 TransitionsBefore, 13 TransitionsAfterwards, 640 CoEnabledTransitionPairs, 6 FixpointIterations, 44 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 83 TotalNumberOfCompositions, 580 MoverChecksTotal - TimeoutResultAtElement [Line: 2]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 2). Cancelled while BasicCegarLoop was constructing difference of abstraction (1280states) and FLOYD_HOARE automaton (currently 2520 states, 70 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 2561 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 803.8s, OverallIterations: 24, TraceHistogramMax: 20, AutomataDifference: 779.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 324 SDtfs, 4079 SDslu, 3831 SDs, 0 SdLazy, 6629 SolverSat, 6408 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8342 GetRequests, 2232 SyntacticMatches, 0 SemanticMatches, 6109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8218129 ImplicationChecksByTransitivity, 704.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1280occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 23 MinimizatonAttempts, 29098 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 10.7s InterpolantComputationTime, 1674 NumberOfCodeBlocks, 1582 NumberOfCodeBlocksAsserted, 131 NumberOfCheckSat, 1627 ConstructedInterpolants, 0 QuantifiedInterpolants, 159451 SizeOfPredicates, 101 NumberOfNonLiveVariables, 4363 ConjunctsInSsa, 310 ConjunctsInUnsatCore, 47 InterpolantComputations, 2 PerfectInterpolantSequences, 3562/8738 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown