/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-lit/fkp2013_variant-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:23:14,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:23:14,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:23:14,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:23:14,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:23:14,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:23:14,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:23:14,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:23:14,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:23:14,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:23:14,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:23:14,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:23:14,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:23:14,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:23:14,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:23:14,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:23:14,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:23:14,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:23:14,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:23:14,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:23:14,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:23:14,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:23:14,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:23:14,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:23:14,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 11:23:14,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:23:14,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:23:14,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:23:14,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:23:14,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:23:14,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:23:14,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:23:14,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:23:14,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:23:14,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:23:14,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:23:14,192 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 11:23:14,215 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:23:14,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:23:14,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:23:14,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:23:14,217 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:23:14,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:23:14,217 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:23:14,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:23:14,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:23:14,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:23:14,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:23:14,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:23:14,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:23:14,219 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:23:14,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:23:14,219 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:23:14,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:23:14,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:23:14,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:23:14,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:23:14,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:23:14,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:23:14,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:23:14,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:23:14,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:23:14,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:23:14,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:23:14,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:23:14,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:23:14,222 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:23:14,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:23:14,535 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:23:14,539 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:23:14,540 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:23:14,541 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:23:14,542 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fkp2013_variant-1.i [2020-10-16 11:23:14,606 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/996f975d5/8409e30540954fc78854a95c2c592b51/FLAGc65164b44 [2020-10-16 11:23:15,134 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:23:15,135 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-lit/fkp2013_variant-1.i [2020-10-16 11:23:15,149 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/996f975d5/8409e30540954fc78854a95c2c592b51/FLAGc65164b44 [2020-10-16 11:23:15,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/996f975d5/8409e30540954fc78854a95c2c592b51 [2020-10-16 11:23:15,438 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:23:15,440 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:23:15,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:23:15,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:23:15,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:23:15,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:23:15" (1/1) ... [2020-10-16 11:23:15,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@329bc8f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:15, skipping insertion in model container [2020-10-16 11:23:15,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:23:15" (1/1) ... [2020-10-16 11:23:15,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:23:15,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:23:15,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:23:15,994 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:23:16,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:23:16,119 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:23:16,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:16 WrapperNode [2020-10-16 11:23:16,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:23:16,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:23:16,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:23:16,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:23:16,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:16" (1/1) ... [2020-10-16 11:23:16,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:16" (1/1) ... [2020-10-16 11:23:16,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:23:16,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:23:16,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:23:16,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:23:16,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:16" (1/1) ... [2020-10-16 11:23:16,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:16" (1/1) ... [2020-10-16 11:23:16,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:16" (1/1) ... [2020-10-16 11:23:16,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:16" (1/1) ... [2020-10-16 11:23:16,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:16" (1/1) ... [2020-10-16 11:23:16,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:16" (1/1) ... [2020-10-16 11:23:16,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:16" (1/1) ... [2020-10-16 11:23:16,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:23:16,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:23:16,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:23:16,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:23:16,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 11:23:16,278 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 11:23:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 11:23:16,278 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 11:23:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:23:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:23:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:23:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:23:16,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:23:16,281 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:23:16,589 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:23:16,589 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-16 11:23:16,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:23:16 BoogieIcfgContainer [2020-10-16 11:23:16,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:23:16,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:23:16,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:23:16,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:23:16,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:23:15" (1/3) ... [2020-10-16 11:23:16,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584a391f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:23:16, skipping insertion in model container [2020-10-16 11:23:16,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:16" (2/3) ... [2020-10-16 11:23:16,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584a391f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:23:16, skipping insertion in model container [2020-10-16 11:23:16,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:23:16" (3/3) ... [2020-10-16 11:23:16,607 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2013_variant-1.i [2020-10-16 11:23:16,622 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:23:16,623 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:23:16,632 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:23:16,633 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:23:16,668 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,668 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,669 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,669 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,670 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,670 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,670 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,671 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,671 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,673 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,673 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,673 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,674 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,674 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,674 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,674 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,675 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,675 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,676 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,680 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,680 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,681 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,681 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,682 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,682 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,687 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,688 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,688 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,688 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,689 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:16,691 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:23:16,706 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 11:23:16,731 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:23:16,732 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:23:16,732 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:23:16,732 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:23:16,732 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:23:16,732 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:23:16,732 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:23:16,733 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:23:16,753 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:23:16,757 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 61 transitions, 132 flow [2020-10-16 11:23:16,761 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 61 transitions, 132 flow [2020-10-16 11:23:16,764 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 64 places, 61 transitions, 132 flow [2020-10-16 11:23:16,812 INFO L129 PetriNetUnfolder]: 4/71 cut-off events. [2020-10-16 11:23:16,812 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:23:16,819 INFO L80 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 71 events. 4/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2020-10-16 11:23:16,822 INFO L117 LiptonReduction]: Number of co-enabled transitions 692 [2020-10-16 11:23:18,040 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-16 11:23:18,572 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2020-10-16 11:23:18,661 INFO L132 LiptonReduction]: Checked pairs total: 623 [2020-10-16 11:23:18,661 INFO L134 LiptonReduction]: Total number of compositions: 61 [2020-10-16 11:23:18,668 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-10-16 11:23:18,679 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-16 11:23:18,682 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-16 11:23:18,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 11:23:18,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:18,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 11:23:18,689 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:18,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:18,695 INFO L82 PathProgramCache]: Analyzing trace with hash 245288, now seen corresponding path program 1 times [2020-10-16 11:23:18,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:18,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370929669] [2020-10-16 11:23:18,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:18,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:18,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370929669] [2020-10-16 11:23:18,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:18,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:23:18,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617031597] [2020-10-16 11:23:18,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:23:18,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:18,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:23:18,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:18,914 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-16 11:23:18,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:18,953 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-10-16 11:23:18,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:23:18,955 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 11:23:18,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:18,966 INFO L225 Difference]: With dead ends: 35 [2020-10-16 11:23:18,967 INFO L226 Difference]: Without dead ends: 31 [2020-10-16 11:23:18,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:18,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-16 11:23:19,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-16 11:23:19,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-16 11:23:19,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-10-16 11:23:19,008 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-10-16 11:23:19,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:19,008 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-10-16 11:23:19,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:23:19,009 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-10-16 11:23:19,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-16 11:23:19,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:19,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:19,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:23:19,010 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:19,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:19,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1115005406, now seen corresponding path program 1 times [2020-10-16 11:23:19,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:19,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114827633] [2020-10-16 11:23:19,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:19,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:19,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114827633] [2020-10-16 11:23:19,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:19,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:23:19,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979490043] [2020-10-16 11:23:19,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:23:19,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:19,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:23:19,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:23:19,139 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-10-16 11:23:19,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:19,159 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-10-16 11:23:19,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:23:19,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-16 11:23:19,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:19,161 INFO L225 Difference]: With dead ends: 26 [2020-10-16 11:23:19,161 INFO L226 Difference]: Without dead ends: 24 [2020-10-16 11:23:19,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:23:19,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-16 11:23:19,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-16 11:23:19,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-16 11:23:19,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-10-16 11:23:19,167 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-10-16 11:23:19,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:19,167 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-10-16 11:23:19,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:23:19,168 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-10-16 11:23:19,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:23:19,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:19,169 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:19,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:23:19,169 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:19,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:19,170 INFO L82 PathProgramCache]: Analyzing trace with hash -205446266, now seen corresponding path program 1 times [2020-10-16 11:23:19,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:19,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851655865] [2020-10-16 11:23:19,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:19,200 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:19,233 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:19,268 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:23:19,269 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:23:19,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:23:19,270 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 11:23:19,271 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 11:23:19,271 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-16 11:23:19,280 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,280 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,280 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,280 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,281 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,281 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,281 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,281 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,281 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,282 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,282 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,282 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,282 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,282 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,283 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,283 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,283 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,283 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,284 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,284 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,285 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,285 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,285 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,285 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,285 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,286 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,286 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,286 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,286 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,287 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,287 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,287 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,287 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,287 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,288 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,288 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,288 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,288 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,288 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,289 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,289 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,289 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,290 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,290 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,292 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,293 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,293 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,295 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,296 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,296 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,296 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,296 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,298 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,299 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,299 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,299 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,310 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,313 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:23:19,314 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 11:23:19,314 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:23:19,314 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:23:19,314 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:23:19,315 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:23:19,315 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:23:19,315 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:23:19,315 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:23:19,315 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:23:19,317 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:23:19,318 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 79 transitions, 182 flow [2020-10-16 11:23:19,318 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 79 transitions, 182 flow [2020-10-16 11:23:19,318 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 79 transitions, 182 flow [2020-10-16 11:23:19,341 INFO L129 PetriNetUnfolder]: 5/93 cut-off events. [2020-10-16 11:23:19,341 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 11:23:19,343 INFO L80 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 93 events. 5/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 135 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 102. Up to 6 conditions per place. [2020-10-16 11:23:19,345 INFO L117 LiptonReduction]: Number of co-enabled transitions 1108 [2020-10-16 11:23:20,838 INFO L132 LiptonReduction]: Checked pairs total: 1509 [2020-10-16 11:23:20,838 INFO L134 LiptonReduction]: Total number of compositions: 72 [2020-10-16 11:23:20,839 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-10-16 11:23:20,853 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-10-16 11:23:20,854 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-10-16 11:23:20,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 11:23:20,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:20,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 11:23:20,855 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:20,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:20,855 INFO L82 PathProgramCache]: Analyzing trace with hash 412706, now seen corresponding path program 1 times [2020-10-16 11:23:20,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:20,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040833390] [2020-10-16 11:23:20,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:20,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:20,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040833390] [2020-10-16 11:23:20,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:20,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:23:20,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632811681] [2020-10-16 11:23:20,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:23:20,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:20,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:23:20,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:20,911 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-10-16 11:23:20,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:20,964 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-10-16 11:23:20,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:23:20,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 11:23:20,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:20,969 INFO L225 Difference]: With dead ends: 185 [2020-10-16 11:23:20,969 INFO L226 Difference]: Without dead ends: 171 [2020-10-16 11:23:20,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:20,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-16 11:23:20,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-16 11:23:20,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-16 11:23:20,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-10-16 11:23:20,998 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-10-16 11:23:20,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:20,998 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-10-16 11:23:20,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:23:20,999 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-10-16 11:23:20,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:23:20,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:20,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:21,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:23:21,000 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:21,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:21,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1644016500, now seen corresponding path program 1 times [2020-10-16 11:23:21,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:21,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871922540] [2020-10-16 11:23:21,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:21,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:21,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871922540] [2020-10-16 11:23:21,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:21,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:21,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254932756] [2020-10-16 11:23:21,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:21,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:21,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:21,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:21,067 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-10-16 11:23:21,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:21,170 INFO L93 Difference]: Finished difference Result 225 states and 491 transitions. [2020-10-16 11:23:21,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:23:21,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 11:23:21,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:21,178 INFO L225 Difference]: With dead ends: 225 [2020-10-16 11:23:21,178 INFO L226 Difference]: Without dead ends: 221 [2020-10-16 11:23:21,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:21,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-16 11:23:21,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 162. [2020-10-16 11:23:21,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-16 11:23:21,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-10-16 11:23:21,202 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-10-16 11:23:21,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:21,202 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-10-16 11:23:21,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:21,203 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-10-16 11:23:21,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:23:21,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:21,204 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:21,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:23:21,205 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:21,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:21,205 INFO L82 PathProgramCache]: Analyzing trace with hash 2007179405, now seen corresponding path program 1 times [2020-10-16 11:23:21,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:21,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483270687] [2020-10-16 11:23:21,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:21,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:21,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483270687] [2020-10-16 11:23:21,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:21,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:21,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94347067] [2020-10-16 11:23:21,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:21,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:21,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:21,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:21,262 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-10-16 11:23:21,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:21,364 INFO L93 Difference]: Finished difference Result 213 states and 458 transitions. [2020-10-16 11:23:21,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:23:21,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:23:21,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:21,367 INFO L225 Difference]: With dead ends: 213 [2020-10-16 11:23:21,367 INFO L226 Difference]: Without dead ends: 209 [2020-10-16 11:23:21,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:21,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-16 11:23:21,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 153. [2020-10-16 11:23:21,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 11:23:21,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-10-16 11:23:21,382 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-10-16 11:23:21,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:21,387 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-10-16 11:23:21,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:21,387 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-10-16 11:23:21,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 11:23:21,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:21,389 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:21,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:23:21,390 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:21,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:21,390 INFO L82 PathProgramCache]: Analyzing trace with hash 2089198851, now seen corresponding path program 1 times [2020-10-16 11:23:21,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:21,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302216083] [2020-10-16 11:23:21,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:21,417 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:21,440 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:21,459 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:23:21,459 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:23:21,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 11:23:21,460 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 11:23:21,461 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 11:23:21,465 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-16 11:23:21,484 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,485 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,485 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,485 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,485 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,485 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,485 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,485 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,485 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,486 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,486 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,486 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,486 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,486 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,486 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,486 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,487 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,487 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,487 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,487 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,487 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,487 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,488 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,488 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,488 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,488 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,488 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,489 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,489 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,489 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,489 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,489 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,489 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,490 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,490 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,490 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,490 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,490 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,491 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,491 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,492 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,492 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,492 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,492 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,492 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,493 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,495 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,495 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,495 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,495 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,498 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,498 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,498 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,498 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,498 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,498 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,500 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,500 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,500 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,500 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,500 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,501 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,502 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,502 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,502 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,502 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,503 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,504 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,504 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,504 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,504 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,504 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,506 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,506 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,506 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,506 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,506 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:21,507 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:23:21,508 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 11:23:21,508 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:23:21,508 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:23:21,508 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:23:21,508 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:23:21,508 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:23:21,508 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:23:21,509 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:23:21,509 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:23:21,510 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:23:21,511 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 97 transitions, 236 flow [2020-10-16 11:23:21,511 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 97 transitions, 236 flow [2020-10-16 11:23:21,511 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 106 places, 97 transitions, 236 flow [2020-10-16 11:23:21,539 INFO L129 PetriNetUnfolder]: 6/115 cut-off events. [2020-10-16 11:23:21,540 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 11:23:21,541 INFO L80 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 115 events. 6/115 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 174 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 129. Up to 8 conditions per place. [2020-10-16 11:23:21,544 INFO L117 LiptonReduction]: Number of co-enabled transitions 1608 [2020-10-16 11:23:22,911 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-16 11:23:23,265 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-10-16 11:23:23,366 INFO L132 LiptonReduction]: Checked pairs total: 2380 [2020-10-16 11:23:23,366 INFO L134 LiptonReduction]: Total number of compositions: 94 [2020-10-16 11:23:23,366 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-10-16 11:23:23,395 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-10-16 11:23:23,395 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-10-16 11:23:23,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 11:23:23,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:23,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 11:23:23,396 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:23,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:23,397 INFO L82 PathProgramCache]: Analyzing trace with hash 619488, now seen corresponding path program 1 times [2020-10-16 11:23:23,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:23,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133622197] [2020-10-16 11:23:23,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:23,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:23,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133622197] [2020-10-16 11:23:23,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:23,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:23:23,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310198771] [2020-10-16 11:23:23,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:23:23,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:23,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:23:23,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:23,424 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-10-16 11:23:23,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:23,467 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-10-16 11:23:23,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:23:23,468 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 11:23:23,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:23,474 INFO L225 Difference]: With dead ends: 600 [2020-10-16 11:23:23,474 INFO L226 Difference]: Without dead ends: 559 [2020-10-16 11:23:23,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:23,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-16 11:23:23,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-10-16 11:23:23,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-16 11:23:23,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-10-16 11:23:23,510 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-10-16 11:23:23,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:23,511 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-10-16 11:23:23,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:23:23,511 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-10-16 11:23:23,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:23:23,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:23,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:23,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 11:23:23,512 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:23,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:23,513 INFO L82 PathProgramCache]: Analyzing trace with hash -760522402, now seen corresponding path program 1 times [2020-10-16 11:23:23,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:23,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481437454] [2020-10-16 11:23:23,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:23,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:23,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481437454] [2020-10-16 11:23:23,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:23,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:23,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618651101] [2020-10-16 11:23:23,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:23,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:23,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:23,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:23,562 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-10-16 11:23:23,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:23,678 INFO L93 Difference]: Finished difference Result 933 states and 2580 transitions. [2020-10-16 11:23:23,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:23:23,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 11:23:23,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:23,689 INFO L225 Difference]: With dead ends: 933 [2020-10-16 11:23:23,689 INFO L226 Difference]: Without dead ends: 928 [2020-10-16 11:23:23,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:23,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2020-10-16 11:23:23,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 585. [2020-10-16 11:23:23,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-16 11:23:23,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-10-16 11:23:23,739 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-10-16 11:23:23,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:23,740 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-10-16 11:23:23,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:23,740 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-10-16 11:23:23,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:23:23,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:23,741 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:23,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 11:23:23,742 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:23,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:23,742 INFO L82 PathProgramCache]: Analyzing trace with hash -146499013, now seen corresponding path program 1 times [2020-10-16 11:23:23,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:23,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900324603] [2020-10-16 11:23:23,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:23,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:23,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900324603] [2020-10-16 11:23:23,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:23,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:23,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607571096] [2020-10-16 11:23:23,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:23,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:23,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:23,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:23,798 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-10-16 11:23:23,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:23,899 INFO L93 Difference]: Finished difference Result 963 states and 2673 transitions. [2020-10-16 11:23:23,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:23:23,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:23:23,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:23,906 INFO L225 Difference]: With dead ends: 963 [2020-10-16 11:23:23,907 INFO L226 Difference]: Without dead ends: 956 [2020-10-16 11:23:23,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:23,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2020-10-16 11:23:23,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 611. [2020-10-16 11:23:23,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-16 11:23:23,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-10-16 11:23:23,934 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-10-16 11:23:23,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:23,934 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-10-16 11:23:23,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:23,934 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-10-16 11:23:23,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:23:23,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:23,936 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:23,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 11:23:23,936 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:23,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:23,937 INFO L82 PathProgramCache]: Analyzing trace with hash 141115969, now seen corresponding path program 1 times [2020-10-16 11:23:23,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:23,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206384454] [2020-10-16 11:23:23,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:24,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:24,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206384454] [2020-10-16 11:23:24,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168969566] [2020-10-16 11:23:24,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:24,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:23:24,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:24,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:24,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:24,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-16 11:23:24,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414384184] [2020-10-16 11:23:24,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 11:23:24,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:24,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 11:23:24,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2020-10-16 11:23:24,241 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 18 states. [2020-10-16 11:23:25,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:25,740 INFO L93 Difference]: Finished difference Result 3011 states and 7783 transitions. [2020-10-16 11:23:25,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-16 11:23:25,740 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 15 [2020-10-16 11:23:25,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:25,760 INFO L225 Difference]: With dead ends: 3011 [2020-10-16 11:23:25,760 INFO L226 Difference]: Without dead ends: 3001 [2020-10-16 11:23:25,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=722, Invalid=2700, Unknown=0, NotChecked=0, Total=3422 [2020-10-16 11:23:25,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2020-10-16 11:23:25,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 661. [2020-10-16 11:23:25,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 661 states. [2020-10-16 11:23:25,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 2106 transitions. [2020-10-16 11:23:25,816 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 2106 transitions. Word has length 15 [2020-10-16 11:23:25,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:25,816 INFO L481 AbstractCegarLoop]: Abstraction has 661 states and 2106 transitions. [2020-10-16 11:23:25,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 11:23:25,816 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 2106 transitions. [2020-10-16 11:23:25,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:23:25,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:25,817 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:26,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-16 11:23:26,032 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:26,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:26,032 INFO L82 PathProgramCache]: Analyzing trace with hash 684503809, now seen corresponding path program 2 times [2020-10-16 11:23:26,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:26,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256278846] [2020-10-16 11:23:26,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:26,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:26,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256278846] [2020-10-16 11:23:26,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174642047] [2020-10-16 11:23:26,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:26,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:23:26,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:23:26,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:23:26,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:26,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:26,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:26,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-16 11:23:26,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950845855] [2020-10-16 11:23:26,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 11:23:26,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:26,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 11:23:26,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-16 11:23:26,311 INFO L87 Difference]: Start difference. First operand 661 states and 2106 transitions. Second operand 18 states. [2020-10-16 11:23:27,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:27,213 INFO L93 Difference]: Finished difference Result 1537 states and 3953 transitions. [2020-10-16 11:23:27,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:27,213 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 15 [2020-10-16 11:23:27,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:27,224 INFO L225 Difference]: With dead ends: 1537 [2020-10-16 11:23:27,224 INFO L226 Difference]: Without dead ends: 1530 [2020-10-16 11:23:27,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=369, Invalid=1353, Unknown=0, NotChecked=0, Total=1722 [2020-10-16 11:23:27,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2020-10-16 11:23:27,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 656. [2020-10-16 11:23:27,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 656 states. [2020-10-16 11:23:27,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 2086 transitions. [2020-10-16 11:23:27,261 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 2086 transitions. Word has length 15 [2020-10-16 11:23:27,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:27,261 INFO L481 AbstractCegarLoop]: Abstraction has 656 states and 2086 transitions. [2020-10-16 11:23:27,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 11:23:27,262 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 2086 transitions. [2020-10-16 11:23:27,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:23:27,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:27,262 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:27,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-16 11:23:27,476 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:27,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:27,477 INFO L82 PathProgramCache]: Analyzing trace with hash -174965367, now seen corresponding path program 3 times [2020-10-16 11:23:27,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:27,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027109011] [2020-10-16 11:23:27,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:27,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:27,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027109011] [2020-10-16 11:23:27,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48374822] [2020-10-16 11:23:27,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:27,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 11:23:27,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:23:27,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:23:27,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:27,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:27,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:27,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-16 11:23:27,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230190674] [2020-10-16 11:23:27,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 11:23:27,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:27,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 11:23:27,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-10-16 11:23:27,752 INFO L87 Difference]: Start difference. First operand 656 states and 2086 transitions. Second operand 18 states. [2020-10-16 11:23:28,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:28,768 INFO L93 Difference]: Finished difference Result 1382 states and 3503 transitions. [2020-10-16 11:23:28,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-16 11:23:28,771 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 15 [2020-10-16 11:23:28,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:28,780 INFO L225 Difference]: With dead ends: 1382 [2020-10-16 11:23:28,780 INFO L226 Difference]: Without dead ends: 1376 [2020-10-16 11:23:28,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=376, Invalid=1430, Unknown=0, NotChecked=0, Total=1806 [2020-10-16 11:23:28,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-10-16 11:23:28,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 620. [2020-10-16 11:23:28,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2020-10-16 11:23:28,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 1966 transitions. [2020-10-16 11:23:28,809 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 1966 transitions. Word has length 15 [2020-10-16 11:23:28,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:28,810 INFO L481 AbstractCegarLoop]: Abstraction has 620 states and 1966 transitions. [2020-10-16 11:23:28,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 11:23:28,810 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 1966 transitions. [2020-10-16 11:23:28,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:23:28,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:28,811 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:29,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-16 11:23:29,027 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:29,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:29,027 INFO L82 PathProgramCache]: Analyzing trace with hash 948378311, now seen corresponding path program 4 times [2020-10-16 11:23:29,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:29,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767067213] [2020-10-16 11:23:29,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:29,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:29,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767067213] [2020-10-16 11:23:29,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797643859] [2020-10-16 11:23:29,104 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:29,158 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:23:29,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:23:29,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:23:29,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:29,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:29,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-16 11:23:29,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239756688] [2020-10-16 11:23:29,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 11:23:29,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:29,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 11:23:29,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-10-16 11:23:29,286 INFO L87 Difference]: Start difference. First operand 620 states and 1966 transitions. Second operand 18 states. [2020-10-16 11:23:30,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:30,105 INFO L93 Difference]: Finished difference Result 1833 states and 4760 transitions. [2020-10-16 11:23:30,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:30,106 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 15 [2020-10-16 11:23:30,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:30,118 INFO L225 Difference]: With dead ends: 1833 [2020-10-16 11:23:30,118 INFO L226 Difference]: Without dead ends: 1825 [2020-10-16 11:23:30,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=373, Invalid=1267, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 11:23:30,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1825 states. [2020-10-16 11:23:30,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1825 to 565. [2020-10-16 11:23:30,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 565 states. [2020-10-16 11:23:30,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 1814 transitions. [2020-10-16 11:23:30,188 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 1814 transitions. Word has length 15 [2020-10-16 11:23:30,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:30,189 INFO L481 AbstractCegarLoop]: Abstraction has 565 states and 1814 transitions. [2020-10-16 11:23:30,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 11:23:30,189 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 1814 transitions. [2020-10-16 11:23:30,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:23:30,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:30,190 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:30,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:23:30,397 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:30,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:30,398 INFO L82 PathProgramCache]: Analyzing trace with hash 244770691, now seen corresponding path program 1 times [2020-10-16 11:23:30,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:30,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358252175] [2020-10-16 11:23:30,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:30,463 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:23:30,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358252175] [2020-10-16 11:23:30,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:30,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:30,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171772527] [2020-10-16 11:23:30,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:30,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:30,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:30,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:30,465 INFO L87 Difference]: Start difference. First operand 565 states and 1814 transitions. Second operand 5 states. [2020-10-16 11:23:30,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:30,565 INFO L93 Difference]: Finished difference Result 889 states and 2517 transitions. [2020-10-16 11:23:30,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:23:30,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 11:23:30,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:30,574 INFO L225 Difference]: With dead ends: 889 [2020-10-16 11:23:30,575 INFO L226 Difference]: Without dead ends: 881 [2020-10-16 11:23:30,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:30,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2020-10-16 11:23:30,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 575. [2020-10-16 11:23:30,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-10-16 11:23:30,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1796 transitions. [2020-10-16 11:23:30,602 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1796 transitions. Word has length 17 [2020-10-16 11:23:30,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:30,602 INFO L481 AbstractCegarLoop]: Abstraction has 575 states and 1796 transitions. [2020-10-16 11:23:30,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:30,603 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1796 transitions. [2020-10-16 11:23:30,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 11:23:30,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:30,605 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:30,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-16 11:23:30,606 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:30,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:30,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1006694159, now seen corresponding path program 1 times [2020-10-16 11:23:30,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:30,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177150610] [2020-10-16 11:23:30,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:30,636 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:30,649 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:30,662 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:23:30,662 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:23:30,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-16 11:23:30,663 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 11:23:30,664 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 11:23:30,665 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-16 11:23:30,681 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,682 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,682 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,682 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,682 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,683 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,683 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,683 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,683 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,684 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,684 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,684 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,684 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,684 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,684 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,685 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,685 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,685 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,685 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,685 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,685 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,686 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,686 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,686 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,686 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,686 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,686 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,687 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,687 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,687 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,687 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,688 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,689 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,689 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,689 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,689 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,689 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,690 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,690 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,690 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,690 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,690 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,690 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,690 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,691 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,691 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,691 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,691 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,691 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,691 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,692 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,692 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,692 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,692 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,692 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,693 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,693 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,693 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,693 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,693 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,694 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,695 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,695 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,695 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,695 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,695 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,695 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,695 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,695 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,696 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,696 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,696 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,696 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,696 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,696 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,696 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,697 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,697 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,697 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,697 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,697 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,697 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,697 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,697 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,698 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,698 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,698 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,698 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,698 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,699 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,700 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,700 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,700 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,700 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,701 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,701 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,702 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,702 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,703 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,703 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,703 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,703 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,704 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,704 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,704 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,705 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,705 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,705 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,706 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,706 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,706 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,706 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,707 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,708 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,708 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,708 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,708 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,708 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,710 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,710 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,710 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,710 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,711 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,713 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,713 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,713 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,713 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,714 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:30,715 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:23:30,715 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-16 11:23:30,715 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:23:30,715 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:23:30,716 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:23:30,716 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:23:30,716 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:23:30,716 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:23:30,716 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:23:30,716 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:23:30,718 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:23:30,718 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 115 transitions, 294 flow [2020-10-16 11:23:30,718 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 115 transitions, 294 flow [2020-10-16 11:23:30,719 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 127 places, 115 transitions, 294 flow [2020-10-16 11:23:30,761 INFO L129 PetriNetUnfolder]: 7/137 cut-off events. [2020-10-16 11:23:30,761 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 11:23:30,765 INFO L80 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 137 events. 7/137 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 234 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 157. Up to 10 conditions per place. [2020-10-16 11:23:30,770 INFO L117 LiptonReduction]: Number of co-enabled transitions 2192 [2020-10-16 11:23:32,517 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-10-16 11:23:32,739 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-16 11:23:32,830 INFO L132 LiptonReduction]: Checked pairs total: 3160 [2020-10-16 11:23:32,830 INFO L134 LiptonReduction]: Total number of compositions: 107 [2020-10-16 11:23:32,831 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-10-16 11:23:32,947 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-10-16 11:23:32,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-10-16 11:23:32,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 11:23:32,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:32,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 11:23:32,948 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:32,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:32,949 INFO L82 PathProgramCache]: Analyzing trace with hash 857348, now seen corresponding path program 1 times [2020-10-16 11:23:32,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:32,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585935341] [2020-10-16 11:23:32,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:32,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:32,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585935341] [2020-10-16 11:23:32,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:32,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:23:32,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501400839] [2020-10-16 11:23:32,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:23:32,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:32,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:23:32,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:32,972 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-10-16 11:23:33,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:33,007 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-10-16 11:23:33,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:23:33,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 11:23:33,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:33,022 INFO L225 Difference]: With dead ends: 1889 [2020-10-16 11:23:33,022 INFO L226 Difference]: Without dead ends: 1767 [2020-10-16 11:23:33,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:33,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-10-16 11:23:33,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-10-16 11:23:33,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-10-16 11:23:33,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-10-16 11:23:33,084 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-10-16 11:23:33,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:33,085 INFO L481 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-10-16 11:23:33,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:23:33,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-10-16 11:23:33,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:23:33,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:33,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:33,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-16 11:23:33,086 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:33,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:33,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1063852733, now seen corresponding path program 1 times [2020-10-16 11:23:33,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:33,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122939586] [2020-10-16 11:23:33,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:33,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:33,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122939586] [2020-10-16 11:23:33,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:33,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:33,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077765227] [2020-10-16 11:23:33,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:33,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:33,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:33,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:33,120 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-10-16 11:23:33,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:33,224 INFO L93 Difference]: Finished difference Result 3381 states and 11559 transitions. [2020-10-16 11:23:33,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:23:33,227 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 11:23:33,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:33,252 INFO L225 Difference]: With dead ends: 3381 [2020-10-16 11:23:33,252 INFO L226 Difference]: Without dead ends: 3375 [2020-10-16 11:23:33,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:33,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3375 states. [2020-10-16 11:23:33,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3375 to 1966. [2020-10-16 11:23:33,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-10-16 11:23:33,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-10-16 11:23:33,338 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-10-16 11:23:33,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:33,338 INFO L481 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-10-16 11:23:33,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:33,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-10-16 11:23:33,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:23:33,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:33,339 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:33,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-16 11:23:33,340 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:33,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:33,340 INFO L82 PathProgramCache]: Analyzing trace with hash 2048649897, now seen corresponding path program 1 times [2020-10-16 11:23:33,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:33,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533394719] [2020-10-16 11:23:33,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:33,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:33,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533394719] [2020-10-16 11:23:33,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:33,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:33,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675867990] [2020-10-16 11:23:33,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:33,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:33,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:33,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:33,381 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-10-16 11:23:33,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:33,527 INFO L93 Difference]: Finished difference Result 3684 states and 12737 transitions. [2020-10-16 11:23:33,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:23:33,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:23:33,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:33,542 INFO L225 Difference]: With dead ends: 3684 [2020-10-16 11:23:33,542 INFO L226 Difference]: Without dead ends: 3674 [2020-10-16 11:23:33,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:33,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3674 states. [2020-10-16 11:23:33,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 2200. [2020-10-16 11:23:33,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-10-16 11:23:33,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-10-16 11:23:33,636 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-10-16 11:23:33,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:33,637 INFO L481 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-10-16 11:23:33,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:33,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-10-16 11:23:33,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:23:33,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:33,638 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:33,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-16 11:23:33,638 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:33,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:33,638 INFO L82 PathProgramCache]: Analyzing trace with hash 119106913, now seen corresponding path program 1 times [2020-10-16 11:23:33,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:33,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345921816] [2020-10-16 11:23:33,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:33,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345921816] [2020-10-16 11:23:33,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3755660] [2020-10-16 11:23:33,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:33,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:23:33,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:33,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:33,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:33,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-16 11:23:33,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931605550] [2020-10-16 11:23:33,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 11:23:33,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:33,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 11:23:33,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-10-16 11:23:33,904 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 18 states. [2020-10-16 11:23:34,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:34,896 INFO L93 Difference]: Finished difference Result 6074 states and 18774 transitions. [2020-10-16 11:23:34,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-16 11:23:34,896 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 15 [2020-10-16 11:23:34,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:34,918 INFO L225 Difference]: With dead ends: 6074 [2020-10-16 11:23:34,918 INFO L226 Difference]: Without dead ends: 6065 [2020-10-16 11:23:34,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1430, Unknown=0, NotChecked=0, Total=1806 [2020-10-16 11:23:34,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6065 states. [2020-10-16 11:23:35,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6065 to 2184. [2020-10-16 11:23:35,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2184 states. [2020-10-16 11:23:35,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 8378 transitions. [2020-10-16 11:23:35,092 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 8378 transitions. Word has length 15 [2020-10-16 11:23:35,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:35,092 INFO L481 AbstractCegarLoop]: Abstraction has 2184 states and 8378 transitions. [2020-10-16 11:23:35,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 11:23:35,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 8378 transitions. [2020-10-16 11:23:35,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:23:35,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:35,093 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:35,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:23:35,308 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:35,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:35,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1657522145, now seen corresponding path program 2 times [2020-10-16 11:23:35,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:35,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433303343] [2020-10-16 11:23:35,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:35,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:35,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433303343] [2020-10-16 11:23:35,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559761222] [2020-10-16 11:23:35,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:35,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:23:35,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:23:35,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:23:35,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:35,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:35,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:35,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-16 11:23:35,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318373827] [2020-10-16 11:23:35,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 11:23:35,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:35,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 11:23:35,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-10-16 11:23:35,582 INFO L87 Difference]: Start difference. First operand 2184 states and 8378 transitions. Second operand 18 states. [2020-10-16 11:23:36,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:36,454 INFO L93 Difference]: Finished difference Result 7978 states and 25385 transitions. [2020-10-16 11:23:36,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:36,454 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 15 [2020-10-16 11:23:36,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:36,478 INFO L225 Difference]: With dead ends: 7978 [2020-10-16 11:23:36,478 INFO L226 Difference]: Without dead ends: 7967 [2020-10-16 11:23:36,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=373, Invalid=1267, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 11:23:36,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7967 states. [2020-10-16 11:23:36,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7967 to 2062. [2020-10-16 11:23:36,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2062 states. [2020-10-16 11:23:36,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 7945 transitions. [2020-10-16 11:23:36,623 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 7945 transitions. Word has length 15 [2020-10-16 11:23:36,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:36,623 INFO L481 AbstractCegarLoop]: Abstraction has 2062 states and 7945 transitions. [2020-10-16 11:23:36,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 11:23:36,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 7945 transitions. [2020-10-16 11:23:36,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:23:36,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:36,625 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:36,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:23:36,840 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:36,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:36,840 INFO L82 PathProgramCache]: Analyzing trace with hash -308621917, now seen corresponding path program 1 times [2020-10-16 11:23:36,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:36,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236810321] [2020-10-16 11:23:36,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:36,880 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:23:36,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236810321] [2020-10-16 11:23:36,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:36,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:36,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299308978] [2020-10-16 11:23:36,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:36,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:36,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:36,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:36,882 INFO L87 Difference]: Start difference. First operand 2062 states and 7945 transitions. Second operand 5 states. [2020-10-16 11:23:36,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:36,993 INFO L93 Difference]: Finished difference Result 3783 states and 13239 transitions. [2020-10-16 11:23:36,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:23:36,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 11:23:36,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:37,002 INFO L225 Difference]: With dead ends: 3783 [2020-10-16 11:23:37,003 INFO L226 Difference]: Without dead ends: 3768 [2020-10-16 11:23:37,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:37,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2020-10-16 11:23:37,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 2298. [2020-10-16 11:23:37,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2298 states. [2020-10-16 11:23:37,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 8830 transitions. [2020-10-16 11:23:37,147 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 8830 transitions. Word has length 17 [2020-10-16 11:23:37,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:37,148 INFO L481 AbstractCegarLoop]: Abstraction has 2298 states and 8830 transitions. [2020-10-16 11:23:37,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:37,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 8830 transitions. [2020-10-16 11:23:37,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:23:37,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:37,153 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:37,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-16 11:23:37,153 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:37,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:37,153 INFO L82 PathProgramCache]: Analyzing trace with hash -433572773, now seen corresponding path program 1 times [2020-10-16 11:23:37,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:37,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58271612] [2020-10-16 11:23:37,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:37,247 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:37,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58271612] [2020-10-16 11:23:37,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135753116] [2020-10-16 11:23:37,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:37,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 11:23:37,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:37,458 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:37,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:37,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-16 11:23:37,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462913243] [2020-10-16 11:23:37,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-16 11:23:37,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:37,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-16 11:23:37,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:23:37,461 INFO L87 Difference]: Start difference. First operand 2298 states and 8830 transitions. Second operand 20 states. [2020-10-16 11:23:39,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:39,090 INFO L93 Difference]: Finished difference Result 5870 states and 19152 transitions. [2020-10-16 11:23:39,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-16 11:23:39,091 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 19 [2020-10-16 11:23:39,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:39,109 INFO L225 Difference]: With dead ends: 5870 [2020-10-16 11:23:39,110 INFO L226 Difference]: Without dead ends: 5859 [2020-10-16 11:23:39,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=521, Invalid=2029, Unknown=0, NotChecked=0, Total=2550 [2020-10-16 11:23:39,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5859 states. [2020-10-16 11:23:39,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5859 to 2302. [2020-10-16 11:23:39,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2302 states. [2020-10-16 11:23:39,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 8807 transitions. [2020-10-16 11:23:39,345 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 8807 transitions. Word has length 19 [2020-10-16 11:23:39,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:39,346 INFO L481 AbstractCegarLoop]: Abstraction has 2302 states and 8807 transitions. [2020-10-16 11:23:39,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-16 11:23:39,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 8807 transitions. [2020-10-16 11:23:39,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:23:39,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:39,347 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:39,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:23:39,562 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:39,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:39,564 INFO L82 PathProgramCache]: Analyzing trace with hash -565762555, now seen corresponding path program 1 times [2020-10-16 11:23:39,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:39,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948935809] [2020-10-16 11:23:39,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:39,711 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:39,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948935809] [2020-10-16 11:23:39,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10553619] [2020-10-16 11:23:39,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:39,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 11:23:39,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:39,918 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:39,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:39,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-16 11:23:39,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383780826] [2020-10-16 11:23:39,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-16 11:23:39,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:39,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-16 11:23:39,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:23:39,920 INFO L87 Difference]: Start difference. First operand 2302 states and 8807 transitions. Second operand 20 states. [2020-10-16 11:23:40,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:40,819 INFO L93 Difference]: Finished difference Result 6355 states and 21440 transitions. [2020-10-16 11:23:40,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-16 11:23:40,820 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 19 [2020-10-16 11:23:40,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:40,831 INFO L225 Difference]: With dead ends: 6355 [2020-10-16 11:23:40,831 INFO L226 Difference]: Without dead ends: 6342 [2020-10-16 11:23:40,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=354, Invalid=1206, Unknown=0, NotChecked=0, Total=1560 [2020-10-16 11:23:40,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6342 states. [2020-10-16 11:23:40,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6342 to 2434. [2020-10-16 11:23:40,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2434 states. [2020-10-16 11:23:40,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2434 states to 2434 states and 9410 transitions. [2020-10-16 11:23:40,924 INFO L78 Accepts]: Start accepts. Automaton has 2434 states and 9410 transitions. Word has length 19 [2020-10-16 11:23:40,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:40,924 INFO L481 AbstractCegarLoop]: Abstraction has 2434 states and 9410 transitions. [2020-10-16 11:23:40,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-16 11:23:40,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2434 states and 9410 transitions. [2020-10-16 11:23:40,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:23:40,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:40,926 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:41,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-16 11:23:41,140 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:41,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:41,141 INFO L82 PathProgramCache]: Analyzing trace with hash -232926117, now seen corresponding path program 2 times [2020-10-16 11:23:41,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:41,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79106822] [2020-10-16 11:23:41,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:41,227 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:41,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79106822] [2020-10-16 11:23:41,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9448343] [2020-10-16 11:23:41,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:41,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:23:41,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:23:41,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:23:41,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:41,404 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 11:23:41,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:41,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17 [2020-10-16 11:23:41,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622239683] [2020-10-16 11:23:41,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-16 11:23:41,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:41,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-16 11:23:41,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-10-16 11:23:41,407 INFO L87 Difference]: Start difference. First operand 2434 states and 9410 transitions. Second operand 19 states. [2020-10-16 11:23:42,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:42,312 INFO L93 Difference]: Finished difference Result 6296 states and 21798 transitions. [2020-10-16 11:23:42,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 11:23:42,312 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2020-10-16 11:23:42,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:42,324 INFO L225 Difference]: With dead ends: 6296 [2020-10-16 11:23:42,324 INFO L226 Difference]: Without dead ends: 6279 [2020-10-16 11:23:42,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2020-10-16 11:23:42,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6279 states. [2020-10-16 11:23:42,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6279 to 2330. [2020-10-16 11:23:42,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2330 states. [2020-10-16 11:23:42,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 9020 transitions. [2020-10-16 11:23:42,396 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 9020 transitions. Word has length 19 [2020-10-16 11:23:42,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:42,396 INFO L481 AbstractCegarLoop]: Abstraction has 2330 states and 9020 transitions. [2020-10-16 11:23:42,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-16 11:23:42,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 9020 transitions. [2020-10-16 11:23:42,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:23:42,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:42,398 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:42,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:23:42,612 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:42,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:42,612 INFO L82 PathProgramCache]: Analyzing trace with hash -232915515, now seen corresponding path program 2 times [2020-10-16 11:23:42,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:42,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837566536] [2020-10-16 11:23:42,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:42,696 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:42,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837566536] [2020-10-16 11:23:42,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619655422] [2020-10-16 11:23:42,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:42,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:23:42,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:23:42,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:23:42,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:42,895 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 11:23:42,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:42,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17 [2020-10-16 11:23:42,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768423274] [2020-10-16 11:23:42,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-16 11:23:42,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:42,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-16 11:23:42,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-10-16 11:23:42,898 INFO L87 Difference]: Start difference. First operand 2330 states and 9020 transitions. Second operand 19 states. [2020-10-16 11:23:43,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:43,734 INFO L93 Difference]: Finished difference Result 4998 states and 16790 transitions. [2020-10-16 11:23:43,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 11:23:43,735 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2020-10-16 11:23:43,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:43,744 INFO L225 Difference]: With dead ends: 4998 [2020-10-16 11:23:43,745 INFO L226 Difference]: Without dead ends: 4985 [2020-10-16 11:23:43,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2020-10-16 11:23:43,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4985 states. [2020-10-16 11:23:43,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4985 to 2353. [2020-10-16 11:23:43,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2353 states. [2020-10-16 11:23:43,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2353 states to 2353 states and 9106 transitions. [2020-10-16 11:23:43,885 INFO L78 Accepts]: Start accepts. Automaton has 2353 states and 9106 transitions. Word has length 19 [2020-10-16 11:23:43,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:43,886 INFO L481 AbstractCegarLoop]: Abstraction has 2353 states and 9106 transitions. [2020-10-16 11:23:43,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-16 11:23:43,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2353 states and 9106 transitions. [2020-10-16 11:23:43,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:23:43,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:43,888 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:44,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-16 11:23:44,102 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:44,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:44,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1402635183, now seen corresponding path program 3 times [2020-10-16 11:23:44,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:44,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25953816] [2020-10-16 11:23:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:44,180 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:44,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25953816] [2020-10-16 11:23:44,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644029686] [2020-10-16 11:23:44,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:44,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 11:23:44,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:23:44,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 11:23:44,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:44,392 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:44,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:44,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-16 11:23:44,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115858729] [2020-10-16 11:23:44,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-16 11:23:44,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:44,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-16 11:23:44,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:23:44,395 INFO L87 Difference]: Start difference. First operand 2353 states and 9106 transitions. Second operand 20 states. [2020-10-16 11:23:45,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:45,449 INFO L93 Difference]: Finished difference Result 5765 states and 19150 transitions. [2020-10-16 11:23:45,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:45,449 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 19 [2020-10-16 11:23:45,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:45,460 INFO L225 Difference]: With dead ends: 5765 [2020-10-16 11:23:45,460 INFO L226 Difference]: Without dead ends: 5752 [2020-10-16 11:23:45,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=423, Invalid=1469, Unknown=0, NotChecked=0, Total=1892 [2020-10-16 11:23:45,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5752 states. [2020-10-16 11:23:45,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5752 to 2296. [2020-10-16 11:23:45,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2296 states. [2020-10-16 11:23:45,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 8805 transitions. [2020-10-16 11:23:45,552 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 8805 transitions. Word has length 19 [2020-10-16 11:23:45,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:45,552 INFO L481 AbstractCegarLoop]: Abstraction has 2296 states and 8805 transitions. [2020-10-16 11:23:45,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-16 11:23:45,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 8805 transitions. [2020-10-16 11:23:45,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:23:45,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:45,554 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:45,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-16 11:23:45,769 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:45,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:45,770 INFO L82 PathProgramCache]: Analyzing trace with hash 316303169, now seen corresponding path program 4 times [2020-10-16 11:23:45,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:45,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108028533] [2020-10-16 11:23:45,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:45,845 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:45,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108028533] [2020-10-16 11:23:45,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497490177] [2020-10-16 11:23:45,845 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:45,904 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:23:45,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:23:45,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 11:23:45,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:46,034 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:46,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:46,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-16 11:23:46,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580698075] [2020-10-16 11:23:46,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-16 11:23:46,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:46,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-16 11:23:46,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:23:46,036 INFO L87 Difference]: Start difference. First operand 2296 states and 8805 transitions. Second operand 20 states. [2020-10-16 11:23:47,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:47,308 INFO L93 Difference]: Finished difference Result 6013 states and 19535 transitions. [2020-10-16 11:23:47,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-16 11:23:47,314 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 19 [2020-10-16 11:23:47,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:47,324 INFO L225 Difference]: With dead ends: 6013 [2020-10-16 11:23:47,324 INFO L226 Difference]: Without dead ends: 5999 [2020-10-16 11:23:47,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=484, Invalid=1678, Unknown=0, NotChecked=0, Total=2162 [2020-10-16 11:23:47,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5999 states. [2020-10-16 11:23:47,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5999 to 2137. [2020-10-16 11:23:47,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2137 states. [2020-10-16 11:23:47,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 8171 transitions. [2020-10-16 11:23:47,390 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 8171 transitions. Word has length 19 [2020-10-16 11:23:47,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:47,390 INFO L481 AbstractCegarLoop]: Abstraction has 2137 states and 8171 transitions. [2020-10-16 11:23:47,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-16 11:23:47,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 8171 transitions. [2020-10-16 11:23:47,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:47,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:47,391 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:47,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-16 11:23:47,594 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:47,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:47,594 INFO L82 PathProgramCache]: Analyzing trace with hash -384450883, now seen corresponding path program 1 times [2020-10-16 11:23:47,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:47,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491675267] [2020-10-16 11:23:47,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:47,685 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 11:23:47,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491675267] [2020-10-16 11:23:47,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891380552] [2020-10-16 11:23:47,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:47,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:23:47,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:47,944 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:47,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:47,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2020-10-16 11:23:47,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871446053] [2020-10-16 11:23:47,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-16 11:23:47,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:47,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-16 11:23:47,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2020-10-16 11:23:47,946 INFO L87 Difference]: Start difference. First operand 2137 states and 8171 transitions. Second operand 23 states. [2020-10-16 11:23:54,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:54,728 INFO L93 Difference]: Finished difference Result 16699 states and 48935 transitions. [2020-10-16 11:23:54,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2020-10-16 11:23:54,728 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 21 [2020-10-16 11:23:54,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:54,768 INFO L225 Difference]: With dead ends: 16699 [2020-10-16 11:23:54,768 INFO L226 Difference]: Without dead ends: 16669 [2020-10-16 11:23:54,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11551 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=4252, Invalid=24818, Unknown=0, NotChecked=0, Total=29070 [2020-10-16 11:23:54,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16669 states. [2020-10-16 11:23:54,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16669 to 2250. [2020-10-16 11:23:54,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2250 states. [2020-10-16 11:23:54,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 8709 transitions. [2020-10-16 11:23:54,944 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 8709 transitions. Word has length 21 [2020-10-16 11:23:54,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:54,944 INFO L481 AbstractCegarLoop]: Abstraction has 2250 states and 8709 transitions. [2020-10-16 11:23:54,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-16 11:23:54,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 8709 transitions. [2020-10-16 11:23:54,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:54,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:54,946 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:55,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-16 11:23:55,154 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:55,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:55,154 INFO L82 PathProgramCache]: Analyzing trace with hash -51603843, now seen corresponding path program 2 times [2020-10-16 11:23:55,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:55,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631143379] [2020-10-16 11:23:55,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:55,264 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:55,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631143379] [2020-10-16 11:23:55,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659140763] [2020-10-16 11:23:55,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:55,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:23:55,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:23:55,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:23:55,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:55,598 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:55,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:55,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2020-10-16 11:23:55,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739898216] [2020-10-16 11:23:55,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-16 11:23:55,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:55,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-16 11:23:55,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2020-10-16 11:23:55,600 INFO L87 Difference]: Start difference. First operand 2250 states and 8709 transitions. Second operand 24 states. [2020-10-16 11:24:00,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:00,472 INFO L93 Difference]: Finished difference Result 12670 states and 37996 transitions. [2020-10-16 11:24:00,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2020-10-16 11:24:00,473 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 21 [2020-10-16 11:24:00,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:00,495 INFO L225 Difference]: With dead ends: 12670 [2020-10-16 11:24:00,495 INFO L226 Difference]: Without dead ends: 12624 [2020-10-16 11:24:00,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6235 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2803, Invalid=13967, Unknown=0, NotChecked=0, Total=16770 [2020-10-16 11:24:00,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12624 states. [2020-10-16 11:24:00,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12624 to 2290. [2020-10-16 11:24:00,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2290 states. [2020-10-16 11:24:00,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2290 states to 2290 states and 8926 transitions. [2020-10-16 11:24:00,623 INFO L78 Accepts]: Start accepts. Automaton has 2290 states and 8926 transitions. Word has length 21 [2020-10-16 11:24:00,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:00,623 INFO L481 AbstractCegarLoop]: Abstraction has 2290 states and 8926 transitions. [2020-10-16 11:24:00,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-16 11:24:00,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2290 states and 8926 transitions. [2020-10-16 11:24:00,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:24:00,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:00,625 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:00,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:24:00,838 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:24:00,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:00,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1221323511, now seen corresponding path program 3 times [2020-10-16 11:24:00,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:00,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058443967] [2020-10-16 11:24:00,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:00,919 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 11:24:00,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058443967] [2020-10-16 11:24:00,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135292096] [2020-10-16 11:24:00,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:01,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 11:24:01,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:01,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:24:01,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:01,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:01,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2020-10-16 11:24:01,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349896594] [2020-10-16 11:24:01,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-16 11:24:01,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:01,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-16 11:24:01,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-10-16 11:24:01,247 INFO L87 Difference]: Start difference. First operand 2290 states and 8926 transitions. Second operand 23 states. [2020-10-16 11:24:06,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:06,353 INFO L93 Difference]: Finished difference Result 9883 states and 28929 transitions. [2020-10-16 11:24:06,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2020-10-16 11:24:06,353 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 21 [2020-10-16 11:24:06,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:06,370 INFO L225 Difference]: With dead ends: 9883 [2020-10-16 11:24:06,370 INFO L226 Difference]: Without dead ends: 9872 [2020-10-16 11:24:06,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6656 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2742, Invalid=15080, Unknown=0, NotChecked=0, Total=17822 [2020-10-16 11:24:06,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9872 states. [2020-10-16 11:24:06,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9872 to 2209. [2020-10-16 11:24:06,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2209 states. [2020-10-16 11:24:06,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 8538 transitions. [2020-10-16 11:24:06,462 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 8538 transitions. Word has length 21 [2020-10-16 11:24:06,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:06,462 INFO L481 AbstractCegarLoop]: Abstraction has 2209 states and 8538 transitions. [2020-10-16 11:24:06,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-16 11:24:06,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 8538 transitions. [2020-10-16 11:24:06,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:24:06,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:06,464 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:06,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:24:06,670 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:24:06,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:06,670 INFO L82 PathProgramCache]: Analyzing trace with hash 497614841, now seen corresponding path program 4 times [2020-10-16 11:24:06,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:06,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674694520] [2020-10-16 11:24:06,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:06,757 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 11:24:06,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674694520] [2020-10-16 11:24:06,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761224797] [2020-10-16 11:24:06,758 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:06,823 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:24:06,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:06,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:24:06,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:07,034 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:07,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:07,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2020-10-16 11:24:07,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805941429] [2020-10-16 11:24:07,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-16 11:24:07,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:07,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-16 11:24:07,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2020-10-16 11:24:07,036 INFO L87 Difference]: Start difference. First operand 2209 states and 8538 transitions. Second operand 23 states. [2020-10-16 11:24:12,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:12,346 INFO L93 Difference]: Finished difference Result 10177 states and 29709 transitions. [2020-10-16 11:24:12,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2020-10-16 11:24:12,347 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 21 [2020-10-16 11:24:12,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:12,364 INFO L225 Difference]: With dead ends: 10177 [2020-10-16 11:24:12,364 INFO L226 Difference]: Without dead ends: 10168 [2020-10-16 11:24:12,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6594 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2710, Invalid=14582, Unknown=0, NotChecked=0, Total=17292 [2020-10-16 11:24:12,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10168 states. [2020-10-16 11:24:12,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10168 to 2191. [2020-10-16 11:24:12,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2191 states. [2020-10-16 11:24:12,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 8469 transitions. [2020-10-16 11:24:12,461 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 8469 transitions. Word has length 21 [2020-10-16 11:24:12,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:12,461 INFO L481 AbstractCegarLoop]: Abstraction has 2191 states and 8469 transitions. [2020-10-16 11:24:12,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-16 11:24:12,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 8469 transitions. [2020-10-16 11:24:12,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:24:12,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:12,463 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:12,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:24:12,669 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:24:12,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:12,669 INFO L82 PathProgramCache]: Analyzing trace with hash 228952445, now seen corresponding path program 5 times [2020-10-16 11:24:12,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:12,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420956097] [2020-10-16 11:24:12,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:12,779 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:12,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420956097] [2020-10-16 11:24:12,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611694163] [2020-10-16 11:24:12,780 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:12,882 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 11:24:12,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:12,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:24:12,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:13,091 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:13,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:13,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2020-10-16 11:24:13,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154710566] [2020-10-16 11:24:13,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-16 11:24:13,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:13,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-16 11:24:13,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2020-10-16 11:24:13,093 INFO L87 Difference]: Start difference. First operand 2191 states and 8469 transitions. Second operand 24 states. [2020-10-16 11:24:18,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:18,915 INFO L93 Difference]: Finished difference Result 20292 states and 62482 transitions. [2020-10-16 11:24:18,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2020-10-16 11:24:18,916 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 21 [2020-10-16 11:24:18,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:18,952 INFO L225 Difference]: With dead ends: 20292 [2020-10-16 11:24:18,952 INFO L226 Difference]: Without dead ends: 20283 [2020-10-16 11:24:18,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8380 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3579, Invalid=18473, Unknown=0, NotChecked=0, Total=22052 [2020-10-16 11:24:19,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20283 states. [2020-10-16 11:24:19,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20283 to 2281. [2020-10-16 11:24:19,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-10-16 11:24:19,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8895 transitions. [2020-10-16 11:24:19,123 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8895 transitions. Word has length 21 [2020-10-16 11:24:19,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:19,123 INFO L481 AbstractCegarLoop]: Abstraction has 2281 states and 8895 transitions. [2020-10-16 11:24:19,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-16 11:24:19,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8895 transitions. [2020-10-16 11:24:19,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:24:19,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:19,125 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:19,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-10-16 11:24:19,326 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:24:19,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:19,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1763023933, now seen corresponding path program 6 times [2020-10-16 11:24:19,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:19,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431483412] [2020-10-16 11:24:19,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:19,445 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:19,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431483412] [2020-10-16 11:24:19,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356804296] [2020-10-16 11:24:19,446 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:19,512 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 11:24:19,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:19,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:24:19,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:19,718 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:19,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:19,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2020-10-16 11:24:19,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391736173] [2020-10-16 11:24:19,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-16 11:24:19,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:19,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-16 11:24:19,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2020-10-16 11:24:19,721 INFO L87 Difference]: Start difference. First operand 2281 states and 8895 transitions. Second operand 24 states. [2020-10-16 11:24:23,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:23,240 INFO L93 Difference]: Finished difference Result 13322 states and 41408 transitions. [2020-10-16 11:24:23,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-10-16 11:24:23,241 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 21 [2020-10-16 11:24:23,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:23,263 INFO L225 Difference]: With dead ends: 13322 [2020-10-16 11:24:23,263 INFO L226 Difference]: Without dead ends: 13299 [2020-10-16 11:24:23,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3070 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1681, Invalid=7439, Unknown=0, NotChecked=0, Total=9120 [2020-10-16 11:24:23,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13299 states. [2020-10-16 11:24:23,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13299 to 2364. [2020-10-16 11:24:23,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2364 states. [2020-10-16 11:24:23,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 9320 transitions. [2020-10-16 11:24:23,378 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 9320 transitions. Word has length 21 [2020-10-16 11:24:23,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:23,378 INFO L481 AbstractCegarLoop]: Abstraction has 2364 states and 9320 transitions. [2020-10-16 11:24:23,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-16 11:24:23,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 9320 transitions. [2020-10-16 11:24:23,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:24:23,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:23,380 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:23,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-16 11:24:23,587 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:24:23,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:23,587 INFO L82 PathProgramCache]: Analyzing trace with hash -503695747, now seen corresponding path program 7 times [2020-10-16 11:24:23,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:23,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162121367] [2020-10-16 11:24:23,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:23,702 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:23,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162121367] [2020-10-16 11:24:23,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530927526] [2020-10-16 11:24:23,703 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:23,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:24:23,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:23,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:23,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2020-10-16 11:24:23,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549960477] [2020-10-16 11:24:23,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-16 11:24:23,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:23,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-16 11:24:23,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2020-10-16 11:24:23,962 INFO L87 Difference]: Start difference. First operand 2364 states and 9320 transitions. Second operand 24 states. [2020-10-16 11:24:28,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:28,076 INFO L93 Difference]: Finished difference Result 17817 states and 55054 transitions. [2020-10-16 11:24:28,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-10-16 11:24:28,077 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 21 [2020-10-16 11:24:28,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:28,108 INFO L225 Difference]: With dead ends: 17817 [2020-10-16 11:24:28,109 INFO L226 Difference]: Without dead ends: 17803 [2020-10-16 11:24:28,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4137 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2116, Invalid=9656, Unknown=0, NotChecked=0, Total=11772 [2020-10-16 11:24:28,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17803 states. [2020-10-16 11:24:28,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17803 to 2349. [2020-10-16 11:24:28,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2349 states. [2020-10-16 11:24:28,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2349 states to 2349 states and 9316 transitions. [2020-10-16 11:24:28,259 INFO L78 Accepts]: Start accepts. Automaton has 2349 states and 9316 transitions. Word has length 21 [2020-10-16 11:24:28,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:28,259 INFO L481 AbstractCegarLoop]: Abstraction has 2349 states and 9316 transitions. [2020-10-16 11:24:28,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-16 11:24:28,259 INFO L276 IsEmpty]: Start isEmpty. Operand 2349 states and 9316 transitions. [2020-10-16 11:24:28,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:24:28,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:28,261 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:28,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-10-16 11:24:28,462 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:24:28,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:28,462 INFO L82 PathProgramCache]: Analyzing trace with hash -493517827, now seen corresponding path program 8 times [2020-10-16 11:24:28,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:28,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091928024] [2020-10-16 11:24:28,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:28,583 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:28,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091928024] [2020-10-16 11:24:28,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137698840] [2020-10-16 11:24:28,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:28,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:24:28,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:28,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:24:28,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:28,855 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:28,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:28,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2020-10-16 11:24:28,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829428012] [2020-10-16 11:24:28,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-16 11:24:28,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:28,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-16 11:24:28,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2020-10-16 11:24:28,858 INFO L87 Difference]: Start difference. First operand 2349 states and 9316 transitions. Second operand 24 states. [2020-10-16 11:24:32,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:32,989 INFO L93 Difference]: Finished difference Result 15364 states and 46571 transitions. [2020-10-16 11:24:32,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2020-10-16 11:24:32,989 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 21 [2020-10-16 11:24:32,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:33,014 INFO L225 Difference]: With dead ends: 15364 [2020-10-16 11:24:33,015 INFO L226 Difference]: Without dead ends: 15352 [2020-10-16 11:24:33,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4297 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2157, Invalid=10053, Unknown=0, NotChecked=0, Total=12210 [2020-10-16 11:24:33,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15352 states. [2020-10-16 11:24:33,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15352 to 2316. [2020-10-16 11:24:33,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2316 states. [2020-10-16 11:24:33,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 9184 transitions. [2020-10-16 11:24:33,144 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 9184 transitions. Word has length 21 [2020-10-16 11:24:33,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:33,144 INFO L481 AbstractCegarLoop]: Abstraction has 2316 states and 9184 transitions. [2020-10-16 11:24:33,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-16 11:24:33,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 9184 transitions. [2020-10-16 11:24:33,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:24:33,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:33,146 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:33,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-16 11:24:33,354 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:24:33,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:33,354 INFO L82 PathProgramCache]: Analyzing trace with hash -917262728, now seen corresponding path program 1 times [2020-10-16 11:24:33,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:33,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395409274] [2020-10-16 11:24:33,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:33,396 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:24:33,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395409274] [2020-10-16 11:24:33,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:33,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:24:33,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516832933] [2020-10-16 11:24:33,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:24:33,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:33,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:24:33,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:24:33,398 INFO L87 Difference]: Start difference. First operand 2316 states and 9184 transitions. Second operand 5 states. [2020-10-16 11:24:33,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:33,526 INFO L93 Difference]: Finished difference Result 3867 states and 13980 transitions. [2020-10-16 11:24:33,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:24:33,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-16 11:24:33,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:33,537 INFO L225 Difference]: With dead ends: 3867 [2020-10-16 11:24:33,537 INFO L226 Difference]: Without dead ends: 3851 [2020-10-16 11:24:33,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:24:33,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3851 states. [2020-10-16 11:24:33,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3851 to 2519. [2020-10-16 11:24:33,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2519 states. [2020-10-16 11:24:33,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 9807 transitions. [2020-10-16 11:24:33,606 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 9807 transitions. Word has length 21 [2020-10-16 11:24:33,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:33,606 INFO L481 AbstractCegarLoop]: Abstraction has 2519 states and 9807 transitions. [2020-10-16 11:24:33,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:24:33,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 9807 transitions. [2020-10-16 11:24:33,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:24:33,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:33,608 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:33,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-16 11:24:33,608 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:24:33,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:33,608 INFO L82 PathProgramCache]: Analyzing trace with hash -846758711, now seen corresponding path program 9 times [2020-10-16 11:24:33,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:33,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781877509] [2020-10-16 11:24:33,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:33,743 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:33,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781877509] [2020-10-16 11:24:33,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517536149] [2020-10-16 11:24:33,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:33,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 11:24:33,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:33,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:24:33,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:34,121 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:34,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:34,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2020-10-16 11:24:34,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54374345] [2020-10-16 11:24:34,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-16 11:24:34,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:34,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-16 11:24:34,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2020-10-16 11:24:34,124 INFO L87 Difference]: Start difference. First operand 2519 states and 9807 transitions. Second operand 24 states. [2020-10-16 11:24:41,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:41,297 INFO L93 Difference]: Finished difference Result 20264 states and 62039 transitions. [2020-10-16 11:24:41,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2020-10-16 11:24:41,298 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 21 [2020-10-16 11:24:41,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:41,418 INFO L225 Difference]: With dead ends: 20264 [2020-10-16 11:24:41,418 INFO L226 Difference]: Without dead ends: 20244 [2020-10-16 11:24:41,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10493 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4446, Invalid=22944, Unknown=0, NotChecked=0, Total=27390 [2020-10-16 11:24:41,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20244 states. [2020-10-16 11:24:41,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20244 to 2554. [2020-10-16 11:24:41,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2554 states. [2020-10-16 11:24:41,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2554 states to 2554 states and 9958 transitions. [2020-10-16 11:24:41,588 INFO L78 Accepts]: Start accepts. Automaton has 2554 states and 9958 transitions. Word has length 21 [2020-10-16 11:24:41,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:41,588 INFO L481 AbstractCegarLoop]: Abstraction has 2554 states and 9958 transitions. [2020-10-16 11:24:41,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-16 11:24:41,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2554 states and 9958 transitions. [2020-10-16 11:24:41,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:24:41,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:41,590 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:41,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-10-16 11:24:41,791 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:24:41,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:41,792 INFO L82 PathProgramCache]: Analyzing trace with hash 687312777, now seen corresponding path program 10 times [2020-10-16 11:24:41,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:41,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183399962] [2020-10-16 11:24:41,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:41,906 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:41,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183399962] [2020-10-16 11:24:41,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76225574] [2020-10-16 11:24:41,907 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:41,985 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:24:41,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:41,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:24:41,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:42,213 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:42,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:42,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2020-10-16 11:24:42,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591033777] [2020-10-16 11:24:42,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-16 11:24:42,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:42,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-16 11:24:42,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2020-10-16 11:24:42,215 INFO L87 Difference]: Start difference. First operand 2554 states and 9958 transitions. Second operand 24 states. [2020-10-16 11:24:46,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:46,070 INFO L93 Difference]: Finished difference Result 12545 states and 38647 transitions. [2020-10-16 11:24:46,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-10-16 11:24:46,071 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 21 [2020-10-16 11:24:46,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:46,091 INFO L225 Difference]: With dead ends: 12545 [2020-10-16 11:24:46,092 INFO L226 Difference]: Without dead ends: 12520 [2020-10-16 11:24:46,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3767 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2039, Invalid=9091, Unknown=0, NotChecked=0, Total=11130 [2020-10-16 11:24:46,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12520 states. [2020-10-16 11:24:46,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12520 to 2453. [2020-10-16 11:24:46,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2453 states. [2020-10-16 11:24:46,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 9523 transitions. [2020-10-16 11:24:46,272 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 9523 transitions. Word has length 21 [2020-10-16 11:24:46,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:46,272 INFO L481 AbstractCegarLoop]: Abstraction has 2453 states and 9523 transitions. [2020-10-16 11:24:46,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-16 11:24:46,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 9523 transitions. [2020-10-16 11:24:46,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:24:46,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:46,274 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:46,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:24:46,475 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:24:46,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:46,475 INFO L82 PathProgramCache]: Analyzing trace with hash 130244667, now seen corresponding path program 11 times [2020-10-16 11:24:46,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:46,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822340567] [2020-10-16 11:24:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:46,578 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:46,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822340567] [2020-10-16 11:24:46,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15043091] [2020-10-16 11:24:46,579 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:46,666 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 11:24:46,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:46,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:24:46,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:46,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:46,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2020-10-16 11:24:46,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542738420] [2020-10-16 11:24:46,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-16 11:24:46,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:46,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-16 11:24:46,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2020-10-16 11:24:46,885 INFO L87 Difference]: Start difference. First operand 2453 states and 9523 transitions. Second operand 23 states. [2020-10-16 11:24:51,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:51,754 INFO L93 Difference]: Finished difference Result 10812 states and 32025 transitions. [2020-10-16 11:24:51,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2020-10-16 11:24:51,755 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 21 [2020-10-16 11:24:51,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:51,773 INFO L225 Difference]: With dead ends: 10812 [2020-10-16 11:24:51,773 INFO L226 Difference]: Without dead ends: 10805 [2020-10-16 11:24:51,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6590 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2834, Invalid=14722, Unknown=0, NotChecked=0, Total=17556 [2020-10-16 11:24:51,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10805 states. [2020-10-16 11:24:51,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10805 to 2384. [2020-10-16 11:24:51,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2384 states. [2020-10-16 11:24:51,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2384 states to 2384 states and 9208 transitions. [2020-10-16 11:24:51,875 INFO L78 Accepts]: Start accepts. Automaton has 2384 states and 9208 transitions. Word has length 21 [2020-10-16 11:24:51,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:51,876 INFO L481 AbstractCegarLoop]: Abstraction has 2384 states and 9208 transitions. [2020-10-16 11:24:51,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-16 11:24:51,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2384 states and 9208 transitions. [2020-10-16 11:24:51,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:24:51,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:51,878 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:52,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-16 11:24:52,088 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:24:52,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:52,088 INFO L82 PathProgramCache]: Analyzing trace with hash 990308489, now seen corresponding path program 12 times [2020-10-16 11:24:52,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:52,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501508927] [2020-10-16 11:24:52,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:52,182 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:52,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501508927] [2020-10-16 11:24:52,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936937005] [2020-10-16 11:24:52,183 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:24:52,246 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 11:24:52,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:52,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:24:52,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:52,463 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:52,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:52,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2020-10-16 11:24:52,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037829712] [2020-10-16 11:24:52,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-16 11:24:52,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:52,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-16 11:24:52,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2020-10-16 11:24:52,465 INFO L87 Difference]: Start difference. First operand 2384 states and 9208 transitions. Second operand 23 states. [2020-10-16 11:24:57,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:57,882 INFO L93 Difference]: Finished difference Result 11481 states and 33893 transitions. [2020-10-16 11:24:57,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2020-10-16 11:24:57,883 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 21 [2020-10-16 11:24:57,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:57,901 INFO L225 Difference]: With dead ends: 11481 [2020-10-16 11:24:57,902 INFO L226 Difference]: Without dead ends: 11475 [2020-10-16 11:24:57,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6864 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2919, Invalid=14903, Unknown=0, NotChecked=0, Total=17822 [2020-10-16 11:24:57,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11475 states. [2020-10-16 11:24:58,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11475 to 2373. [2020-10-16 11:24:58,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2373 states. [2020-10-16 11:24:58,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 9196 transitions. [2020-10-16 11:24:58,008 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 9196 transitions. Word has length 21 [2020-10-16 11:24:58,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:58,008 INFO L481 AbstractCegarLoop]: Abstraction has 2373 states and 9196 transitions. [2020-10-16 11:24:58,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-16 11:24:58,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 9196 transitions. [2020-10-16 11:24:58,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:24:58,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:58,010 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:58,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:24:58,226 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:24:58,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:58,226 INFO L82 PathProgramCache]: Analyzing trace with hash -975339911, now seen corresponding path program 13 times [2020-10-16 11:24:58,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:58,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387051608] [2020-10-16 11:24:58,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:58,340 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:58,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387051608] [2020-10-16 11:24:58,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065852158] [2020-10-16 11:24:58,340 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:24:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:58,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:24:58,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:58,641 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:58,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:58,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2020-10-16 11:24:58,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260012409] [2020-10-16 11:24:58,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-16 11:24:58,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:58,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-16 11:24:58,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2020-10-16 11:24:58,643 INFO L87 Difference]: Start difference. First operand 2373 states and 9196 transitions. Second operand 24 states. [2020-10-16 11:25:03,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:03,736 INFO L93 Difference]: Finished difference Result 12980 states and 39286 transitions. [2020-10-16 11:25:03,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2020-10-16 11:25:03,738 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 21 [2020-10-16 11:25:03,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:03,775 INFO L225 Difference]: With dead ends: 12980 [2020-10-16 11:25:03,776 INFO L226 Difference]: Without dead ends: 12966 [2020-10-16 11:25:03,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5839 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2692, Invalid=12808, Unknown=0, NotChecked=0, Total=15500 [2020-10-16 11:25:03,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12966 states. [2020-10-16 11:25:04,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12966 to 2234. [2020-10-16 11:25:04,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2234 states. [2020-10-16 11:25:04,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2234 states to 2234 states and 8695 transitions. [2020-10-16 11:25:04,024 INFO L78 Accepts]: Start accepts. Automaton has 2234 states and 8695 transitions. Word has length 21 [2020-10-16 11:25:04,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:04,025 INFO L481 AbstractCegarLoop]: Abstraction has 2234 states and 8695 transitions. [2020-10-16 11:25:04,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-16 11:25:04,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2234 states and 8695 transitions. [2020-10-16 11:25:04,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 11:25:04,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:04,029 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:04,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-10-16 11:25:04,244 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:25:04,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:04,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1624171416, now seen corresponding path program 1 times [2020-10-16 11:25:04,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:04,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079664998] [2020-10-16 11:25:04,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:25:04,258 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:25:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:25:04,266 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:25:04,285 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:25:04,285 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:25:04,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-16 11:25:04,286 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 11:25:04,287 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 11:25:04,287 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-16 11:25:04,304 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,304 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,304 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,304 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,305 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,305 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,305 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,305 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,305 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,305 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,305 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,306 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,306 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,306 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,306 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,306 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,306 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,306 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,307 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,307 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,307 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,307 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,307 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,307 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,307 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,307 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,307 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,308 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,308 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,308 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,308 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,308 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,308 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,308 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,309 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,309 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,309 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,309 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,309 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,309 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,309 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,309 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,310 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,310 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,310 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,310 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,310 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,310 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,310 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,311 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,311 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,311 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,311 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,311 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,311 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,311 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,311 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,312 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,312 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,312 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,312 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,312 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,312 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,312 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,313 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,313 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,313 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,313 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,313 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,314 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,314 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,314 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,314 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,314 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,315 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,315 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,315 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,315 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,315 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,315 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,315 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,316 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,316 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,316 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,316 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,317 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,317 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,317 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,317 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,317 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,317 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,317 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,317 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,318 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,318 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,318 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,318 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,319 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,319 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,319 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,319 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,319 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,319 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,320 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,320 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,320 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,320 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,320 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,320 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,321 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,321 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,322 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,322 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,323 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,323 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,323 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,323 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,324 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,325 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,325 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,325 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,325 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,325 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,327 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,327 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,327 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,327 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,327 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,327 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,329 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,329 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,329 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,329 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,329 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,329 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,331 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,331 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,331 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,331 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,331 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,333 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,333 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,333 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,333 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,333 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,334 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,334 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,334 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,334 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,334 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,335 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,335 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,335 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,336 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,336 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,336 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,337 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,337 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,337 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,337 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:25:04,338 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:25:04,338 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-16 11:25:04,338 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:25:04,338 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:25:04,338 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:25:04,338 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:25:04,338 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:25:04,338 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:25:04,339 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:25:04,339 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:25:04,340 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:25:04,340 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 133 transitions, 356 flow [2020-10-16 11:25:04,340 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 133 transitions, 356 flow [2020-10-16 11:25:04,340 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 148 places, 133 transitions, 356 flow [2020-10-16 11:25:04,358 INFO L129 PetriNetUnfolder]: 8/159 cut-off events. [2020-10-16 11:25:04,358 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 11:25:04,360 INFO L80 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 159 events. 8/159 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 297 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 186. Up to 12 conditions per place. [2020-10-16 11:25:04,365 INFO L117 LiptonReduction]: Number of co-enabled transitions 2860 [2020-10-16 11:25:06,344 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-16 11:25:06,954 INFO L132 LiptonReduction]: Checked pairs total: 4341 [2020-10-16 11:25:06,954 INFO L134 LiptonReduction]: Total number of compositions: 126 [2020-10-16 11:25:06,954 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-10-16 11:25:07,345 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-10-16 11:25:07,345 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-10-16 11:25:07,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 11:25:07,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:07,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 11:25:07,346 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:07,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:07,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1129837, now seen corresponding path program 1 times [2020-10-16 11:25:07,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:07,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267651214] [2020-10-16 11:25:07,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:07,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:25:07,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267651214] [2020-10-16 11:25:07,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:25:07,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:25:07,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171179340] [2020-10-16 11:25:07,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:25:07,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:07,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:25:07,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:25:07,360 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-10-16 11:25:07,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:07,456 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-10-16 11:25:07,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:25:07,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 11:25:07,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:07,573 INFO L225 Difference]: With dead ends: 5844 [2020-10-16 11:25:07,574 INFO L226 Difference]: Without dead ends: 5479 [2020-10-16 11:25:07,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:25:07,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-10-16 11:25:07,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-10-16 11:25:07,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-10-16 11:25:07,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-10-16 11:25:07,732 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-10-16 11:25:07,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:07,732 INFO L481 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-10-16 11:25:07,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:25:07,732 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-10-16 11:25:07,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:25:07,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:07,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:07,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-16 11:25:07,733 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:07,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:07,733 INFO L82 PathProgramCache]: Analyzing trace with hash 683068333, now seen corresponding path program 1 times [2020-10-16 11:25:07,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:07,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260345252] [2020-10-16 11:25:07,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:25:07,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260345252] [2020-10-16 11:25:07,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:25:07,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:25:07,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346206951] [2020-10-16 11:25:07,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:25:07,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:07,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:25:07,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:25:07,768 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-10-16 11:25:07,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:07,949 INFO L93 Difference]: Finished difference Result 11373 states and 46632 transitions. [2020-10-16 11:25:07,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:25:07,950 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 11:25:07,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:07,976 INFO L225 Difference]: With dead ends: 11373 [2020-10-16 11:25:07,976 INFO L226 Difference]: Without dead ends: 11366 [2020-10-16 11:25:07,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:25:08,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11366 states. [2020-10-16 11:25:08,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11366 to 6331. [2020-10-16 11:25:08,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-10-16 11:25:08,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-10-16 11:25:08,208 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-10-16 11:25:08,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:08,209 INFO L481 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-10-16 11:25:08,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:25:08,209 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-10-16 11:25:08,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:25:08,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:08,209 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:08,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-16 11:25:08,210 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:08,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:08,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1472806829, now seen corresponding path program 1 times [2020-10-16 11:25:08,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:08,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583806674] [2020-10-16 11:25:08,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:08,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:25:08,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583806674] [2020-10-16 11:25:08,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:25:08,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:25:08,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019287324] [2020-10-16 11:25:08,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:25:08,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:08,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:25:08,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:25:08,253 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-10-16 11:25:08,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:08,450 INFO L93 Difference]: Finished difference Result 12785 states and 53129 transitions. [2020-10-16 11:25:08,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:25:08,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:25:08,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:08,483 INFO L225 Difference]: With dead ends: 12785 [2020-10-16 11:25:08,483 INFO L226 Difference]: Without dead ends: 12772 [2020-10-16 11:25:08,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:25:08,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12772 states. [2020-10-16 11:25:08,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12772 to 7391. [2020-10-16 11:25:08,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-10-16 11:25:08,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-10-16 11:25:08,750 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-10-16 11:25:08,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:08,750 INFO L481 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-10-16 11:25:08,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:25:08,750 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-10-16 11:25:08,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:25:08,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:08,751 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:08,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-16 11:25:08,751 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:08,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:08,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1682184658, now seen corresponding path program 1 times [2020-10-16 11:25:08,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:08,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939669316] [2020-10-16 11:25:08,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:08,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:25:08,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939669316] [2020-10-16 11:25:08,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175831726] [2020-10-16 11:25:08,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:25:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:08,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:25:08,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:25:09,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:25:09,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:25:09,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-16 11:25:09,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275431032] [2020-10-16 11:25:09,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 11:25:09,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:09,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 11:25:09,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-10-16 11:25:09,058 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 18 states. [2020-10-16 11:25:11,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:11,125 INFO L93 Difference]: Finished difference Result 23025 states and 86555 transitions. [2020-10-16 11:25:11,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-16 11:25:11,125 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 15 [2020-10-16 11:25:11,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:11,178 INFO L225 Difference]: With dead ends: 23025 [2020-10-16 11:25:11,178 INFO L226 Difference]: Without dead ends: 23014 [2020-10-16 11:25:11,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=376, Invalid=1430, Unknown=0, NotChecked=0, Total=1806 [2020-10-16 11:25:11,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23014 states. [2020-10-16 11:25:11,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23014 to 7423. [2020-10-16 11:25:11,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7423 states. [2020-10-16 11:25:11,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7423 states to 7423 states and 33792 transitions. [2020-10-16 11:25:11,535 INFO L78 Accepts]: Start accepts. Automaton has 7423 states and 33792 transitions. Word has length 15 [2020-10-16 11:25:11,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:11,535 INFO L481 AbstractCegarLoop]: Abstraction has 7423 states and 33792 transitions. [2020-10-16 11:25:11,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 11:25:11,535 INFO L276 IsEmpty]: Start isEmpty. Operand 7423 states and 33792 transitions. [2020-10-16 11:25:11,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:25:11,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:11,536 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:11,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-10-16 11:25:11,737 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:11,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:11,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1971855314, now seen corresponding path program 2 times [2020-10-16 11:25:11,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:11,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718567824] [2020-10-16 11:25:11,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:11,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:25:11,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718567824] [2020-10-16 11:25:11,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231858244] [2020-10-16 11:25:11,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:25:11,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:25:11,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:25:11,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:25:11,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:25:12,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:25:12,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:25:12,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-16 11:25:12,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496283613] [2020-10-16 11:25:12,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 11:25:12,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:12,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 11:25:12,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-10-16 11:25:12,030 INFO L87 Difference]: Start difference. First operand 7423 states and 33792 transitions. Second operand 18 states. [2020-10-16 11:25:13,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:13,284 INFO L93 Difference]: Finished difference Result 29614 states and 114072 transitions. [2020-10-16 11:25:13,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:25:13,285 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 15 [2020-10-16 11:25:13,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:13,364 INFO L225 Difference]: With dead ends: 29614 [2020-10-16 11:25:13,365 INFO L226 Difference]: Without dead ends: 29600 [2020-10-16 11:25:13,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=373, Invalid=1267, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 11:25:13,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29600 states. [2020-10-16 11:25:13,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29600 to 7168. [2020-10-16 11:25:13,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7168 states. [2020-10-16 11:25:13,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7168 states to 7168 states and 32668 transitions. [2020-10-16 11:25:13,797 INFO L78 Accepts]: Start accepts. Automaton has 7168 states and 32668 transitions. Word has length 15 [2020-10-16 11:25:13,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:13,798 INFO L481 AbstractCegarLoop]: Abstraction has 7168 states and 32668 transitions. [2020-10-16 11:25:13,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 11:25:13,798 INFO L276 IsEmpty]: Start isEmpty. Operand 7168 states and 32668 transitions. [2020-10-16 11:25:13,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:25:13,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:13,799 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:14,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-10-16 11:25:14,005 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:14,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:14,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1257206282, now seen corresponding path program 1 times [2020-10-16 11:25:14,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:14,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554760194] [2020-10-16 11:25:14,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:14,038 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:25:14,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554760194] [2020-10-16 11:25:14,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:25:14,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:25:14,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743825125] [2020-10-16 11:25:14,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:25:14,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:14,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:25:14,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:25:14,040 INFO L87 Difference]: Start difference. First operand 7168 states and 32668 transitions. Second operand 5 states. [2020-10-16 11:25:14,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:14,340 INFO L93 Difference]: Finished difference Result 14114 states and 59552 transitions. [2020-10-16 11:25:14,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:25:14,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 11:25:14,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:14,376 INFO L225 Difference]: With dead ends: 14114 [2020-10-16 11:25:14,376 INFO L226 Difference]: Without dead ends: 14092 [2020-10-16 11:25:14,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:25:14,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14092 states. [2020-10-16 11:25:14,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14092 to 8447. [2020-10-16 11:25:14,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8447 states. [2020-10-16 11:25:14,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8447 states to 8447 states and 38789 transitions. [2020-10-16 11:25:14,681 INFO L78 Accepts]: Start accepts. Automaton has 8447 states and 38789 transitions. Word has length 17 [2020-10-16 11:25:14,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:14,681 INFO L481 AbstractCegarLoop]: Abstraction has 8447 states and 38789 transitions. [2020-10-16 11:25:14,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:25:14,682 INFO L276 IsEmpty]: Start isEmpty. Operand 8447 states and 38789 transitions. [2020-10-16 11:25:14,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:25:14,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:14,682 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:14,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-16 11:25:14,683 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:14,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:14,683 INFO L82 PathProgramCache]: Analyzing trace with hash 631632905, now seen corresponding path program 1 times [2020-10-16 11:25:14,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:14,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791830086] [2020-10-16 11:25:14,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:14,803 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:25:14,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791830086] [2020-10-16 11:25:14,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883606265] [2020-10-16 11:25:14,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:25:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:14,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 11:25:14,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:25:15,073 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:25:15,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:25:15,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-16 11:25:15,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168688189] [2020-10-16 11:25:15,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-16 11:25:15,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:15,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-16 11:25:15,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:25:15,075 INFO L87 Difference]: Start difference. First operand 8447 states and 38789 transitions. Second operand 20 states. [2020-10-16 11:25:16,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:16,859 INFO L93 Difference]: Finished difference Result 23172 states and 91050 transitions. [2020-10-16 11:25:16,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-16 11:25:16,860 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 19 [2020-10-16 11:25:16,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:16,923 INFO L225 Difference]: With dead ends: 23172 [2020-10-16 11:25:16,923 INFO L226 Difference]: Without dead ends: 23156 [2020-10-16 11:25:16,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=521, Invalid=2029, Unknown=0, NotChecked=0, Total=2550 [2020-10-16 11:25:17,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23156 states. [2020-10-16 11:25:17,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23156 to 8503. [2020-10-16 11:25:17,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8503 states. [2020-10-16 11:25:17,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8503 states to 8503 states and 38957 transitions. [2020-10-16 11:25:17,304 INFO L78 Accepts]: Start accepts. Automaton has 8503 states and 38957 transitions. Word has length 19 [2020-10-16 11:25:17,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:17,304 INFO L481 AbstractCegarLoop]: Abstraction has 8503 states and 38957 transitions. [2020-10-16 11:25:17,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-16 11:25:17,304 INFO L276 IsEmpty]: Start isEmpty. Operand 8503 states and 38957 transitions. [2020-10-16 11:25:17,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:25:17,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:17,305 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:17,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-16 11:25:17,506 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:17,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:17,507 INFO L82 PathProgramCache]: Analyzing trace with hash -968342726, now seen corresponding path program 1 times [2020-10-16 11:25:17,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:17,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452683733] [2020-10-16 11:25:17,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:17,595 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:25:17,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452683733] [2020-10-16 11:25:17,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560173215] [2020-10-16 11:25:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:25:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:17,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 11:25:17,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:25:17,927 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-10-16 11:25:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:25:17,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:25:17,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-16 11:25:17,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909031582] [2020-10-16 11:25:17,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-16 11:25:17,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:17,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-16 11:25:17,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:25:17,985 INFO L87 Difference]: Start difference. First operand 8503 states and 38957 transitions. Second operand 20 states. [2020-10-16 11:25:19,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:19,607 INFO L93 Difference]: Finished difference Result 24677 states and 96805 transitions. [2020-10-16 11:25:19,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-16 11:25:19,608 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 19 [2020-10-16 11:25:19,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:19,666 INFO L225 Difference]: With dead ends: 24677 [2020-10-16 11:25:19,666 INFO L226 Difference]: Without dead ends: 24658 [2020-10-16 11:25:19,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=484, Invalid=1678, Unknown=0, NotChecked=0, Total=2162 [2020-10-16 11:25:19,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24658 states. [2020-10-16 11:25:20,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24658 to 8577. [2020-10-16 11:25:20,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8577 states. [2020-10-16 11:25:20,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8577 states to 8577 states and 39244 transitions. [2020-10-16 11:25:20,054 INFO L78 Accepts]: Start accepts. Automaton has 8577 states and 39244 transitions. Word has length 19 [2020-10-16 11:25:20,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:20,054 INFO L481 AbstractCegarLoop]: Abstraction has 8577 states and 39244 transitions. [2020-10-16 11:25:20,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-16 11:25:20,054 INFO L276 IsEmpty]: Start isEmpty. Operand 8577 states and 39244 transitions. [2020-10-16 11:25:20,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:25:20,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:20,055 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:20,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:25:20,256 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:20,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:20,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1289406842, now seen corresponding path program 2 times [2020-10-16 11:25:20,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:20,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460652791] [2020-10-16 11:25:20,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:20,356 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:25:20,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460652791] [2020-10-16 11:25:20,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340825961] [2020-10-16 11:25:20,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:25:20,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:25:20,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:25:20,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:25:20,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:25:20,586 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 11:25:20,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:25:20,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17 [2020-10-16 11:25:20,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913102799] [2020-10-16 11:25:20,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-16 11:25:20,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:20,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-16 11:25:20,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-10-16 11:25:20,588 INFO L87 Difference]: Start difference. First operand 8577 states and 39244 transitions. Second operand 19 states. [2020-10-16 11:25:21,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:21,820 INFO L93 Difference]: Finished difference Result 19940 states and 80274 transitions. [2020-10-16 11:25:21,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 11:25:21,820 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2020-10-16 11:25:21,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:21,870 INFO L225 Difference]: With dead ends: 19940 [2020-10-16 11:25:21,870 INFO L226 Difference]: Without dead ends: 19921 [2020-10-16 11:25:21,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2020-10-16 11:25:21,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19921 states. [2020-10-16 11:25:22,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19921 to 8468. [2020-10-16 11:25:22,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8468 states. [2020-10-16 11:25:22,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8468 states to 8468 states and 38762 transitions. [2020-10-16 11:25:22,430 INFO L78 Accepts]: Start accepts. Automaton has 8468 states and 38762 transitions. Word has length 19 [2020-10-16 11:25:22,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:22,431 INFO L481 AbstractCegarLoop]: Abstraction has 8468 states and 38762 transitions. [2020-10-16 11:25:22,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-16 11:25:22,431 INFO L276 IsEmpty]: Start isEmpty. Operand 8468 states and 38762 transitions. [2020-10-16 11:25:22,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:25:22,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:22,432 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:22,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:25:22,633 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:22,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:22,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1289437129, now seen corresponding path program 2 times [2020-10-16 11:25:22,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:22,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580804624] [2020-10-16 11:25:22,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:22,730 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:25:22,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580804624] [2020-10-16 11:25:22,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930026618] [2020-10-16 11:25:22,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:25:22,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:25:22,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:25:22,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:25:22,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:25:22,955 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 11:25:22,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:25:22,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17 [2020-10-16 11:25:22,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536644346] [2020-10-16 11:25:22,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-16 11:25:22,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:22,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-16 11:25:22,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-10-16 11:25:22,957 INFO L87 Difference]: Start difference. First operand 8468 states and 38762 transitions. Second operand 19 states. [2020-10-16 11:25:24,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:24,101 INFO L93 Difference]: Finished difference Result 22845 states and 94088 transitions. [2020-10-16 11:25:24,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 11:25:24,102 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2020-10-16 11:25:24,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:24,162 INFO L225 Difference]: With dead ends: 22845 [2020-10-16 11:25:24,162 INFO L226 Difference]: Without dead ends: 22820 [2020-10-16 11:25:24,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2020-10-16 11:25:24,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22820 states. [2020-10-16 11:25:24,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22820 to 8329. [2020-10-16 11:25:24,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8329 states. [2020-10-16 11:25:24,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8329 states to 8329 states and 38184 transitions. [2020-10-16 11:25:24,523 INFO L78 Accepts]: Start accepts. Automaton has 8329 states and 38184 transitions. Word has length 19 [2020-10-16 11:25:24,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:24,523 INFO L481 AbstractCegarLoop]: Abstraction has 8329 states and 38184 transitions. [2020-10-16 11:25:24,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-16 11:25:24,523 INFO L276 IsEmpty]: Start isEmpty. Operand 8329 states and 38184 transitions. [2020-10-16 11:25:24,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:25:24,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:24,524 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:24,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:25:24,725 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:24,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:24,726 INFO L82 PathProgramCache]: Analyzing trace with hash -848936583, now seen corresponding path program 1 times [2020-10-16 11:25:24,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:24,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129332615] [2020-10-16 11:25:24,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:24,827 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 11:25:24,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129332615] [2020-10-16 11:25:24,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500574324] [2020-10-16 11:25:24,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:25:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:24,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:25:24,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:25:25,225 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:25:25,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:25:25,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2020-10-16 11:25:25,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88909465] [2020-10-16 11:25:25,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-16 11:25:25,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:25,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-16 11:25:25,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2020-10-16 11:25:25,227 INFO L87 Difference]: Start difference. First operand 8329 states and 38184 transitions. Second operand 23 states. [2020-10-16 11:25:27,307 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-10-16 11:25:33,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:33,089 INFO L93 Difference]: Finished difference Result 49750 states and 175587 transitions. [2020-10-16 11:25:33,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2020-10-16 11:25:33,089 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 21 [2020-10-16 11:25:33,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:33,227 INFO L225 Difference]: With dead ends: 49750 [2020-10-16 11:25:33,227 INFO L226 Difference]: Without dead ends: 49701 [2020-10-16 11:25:33,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8142 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3170, Invalid=17710, Unknown=0, NotChecked=0, Total=20880 [2020-10-16 11:25:33,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49701 states. [2020-10-16 11:25:34,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49701 to 8689. [2020-10-16 11:25:34,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8689 states. [2020-10-16 11:25:34,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8689 states to 8689 states and 39965 transitions. [2020-10-16 11:25:34,973 INFO L78 Accepts]: Start accepts. Automaton has 8689 states and 39965 transitions. Word has length 21 [2020-10-16 11:25:34,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:34,973 INFO L481 AbstractCegarLoop]: Abstraction has 8689 states and 39965 transitions. [2020-10-16 11:25:34,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-16 11:25:34,973 INFO L276 IsEmpty]: Start isEmpty. Operand 8689 states and 39965 transitions. [2020-10-16 11:25:34,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:25:34,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:34,974 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:35,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-10-16 11:25:35,175 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:35,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:35,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1408812985, now seen corresponding path program 2 times [2020-10-16 11:25:35,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:35,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142751424] [2020-10-16 11:25:35,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:35,314 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:25:35,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142751424] [2020-10-16 11:25:35,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294237198] [2020-10-16 11:25:35,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:25:35,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:25:35,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:25:35,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:25:35,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:25:35,645 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:25:35,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:25:35,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2020-10-16 11:25:35,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669951251] [2020-10-16 11:25:35,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-16 11:25:35,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:35,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-16 11:25:35,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2020-10-16 11:25:35,647 INFO L87 Difference]: Start difference. First operand 8689 states and 39965 transitions. Second operand 24 states. [2020-10-16 11:25:42,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:42,652 INFO L93 Difference]: Finished difference Result 56458 states and 204600 transitions. [2020-10-16 11:25:42,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2020-10-16 11:25:42,653 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 21 [2020-10-16 11:25:42,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:42,784 INFO L225 Difference]: With dead ends: 56458 [2020-10-16 11:25:42,784 INFO L226 Difference]: Without dead ends: 56381 [2020-10-16 11:25:42,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6202 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2803, Invalid=13967, Unknown=0, NotChecked=0, Total=16770 [2020-10-16 11:25:43,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56381 states. [2020-10-16 11:25:43,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56381 to 8775. [2020-10-16 11:25:43,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8775 states. [2020-10-16 11:25:43,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8775 states to 8775 states and 40541 transitions. [2020-10-16 11:25:43,499 INFO L78 Accepts]: Start accepts. Automaton has 8775 states and 40541 transitions. Word has length 21 [2020-10-16 11:25:43,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:43,499 INFO L481 AbstractCegarLoop]: Abstraction has 8775 states and 40541 transitions. [2020-10-16 11:25:43,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-16 11:25:43,500 INFO L276 IsEmpty]: Start isEmpty. Operand 8775 states and 40541 transitions. [2020-10-16 11:25:43,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:25:43,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:43,501 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:43,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:25:43,701 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:43,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:43,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1091422073, now seen corresponding path program 3 times [2020-10-16 11:25:43,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:43,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836977156] [2020-10-16 11:25:43,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:43,807 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:25:43,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836977156] [2020-10-16 11:25:43,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724085976] [2020-10-16 11:25:43,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:25:43,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 11:25:43,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:25:43,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:25:43,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:25:44,110 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:25:44,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:25:44,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2020-10-16 11:25:44,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731905950] [2020-10-16 11:25:44,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-16 11:25:44,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:44,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-16 11:25:44,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2020-10-16 11:25:44,113 INFO L87 Difference]: Start difference. First operand 8775 states and 40541 transitions. Second operand 23 states. [2020-10-16 11:25:51,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:51,364 INFO L93 Difference]: Finished difference Result 52830 states and 186318 transitions. [2020-10-16 11:25:51,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2020-10-16 11:25:51,365 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 21 [2020-10-16 11:25:51,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:51,483 INFO L225 Difference]: With dead ends: 52830 [2020-10-16 11:25:51,483 INFO L226 Difference]: Without dead ends: 52813 [2020-10-16 11:25:51,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8677 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=3501, Invalid=18551, Unknown=0, NotChecked=0, Total=22052 [2020-10-16 11:25:51,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52813 states. [2020-10-16 11:25:52,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52813 to 8850. [2020-10-16 11:25:52,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8850 states. [2020-10-16 11:25:52,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8850 states to 8850 states and 40968 transitions. [2020-10-16 11:25:52,159 INFO L78 Accepts]: Start accepts. Automaton has 8850 states and 40968 transitions. Word has length 21 [2020-10-16 11:25:52,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:52,159 INFO L481 AbstractCegarLoop]: Abstraction has 8850 states and 40968 transitions. [2020-10-16 11:25:52,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-16 11:25:52,159 INFO L276 IsEmpty]: Start isEmpty. Operand 8850 states and 40968 transitions. [2020-10-16 11:25:52,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:25:52,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:52,160 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:52,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-16 11:25:52,361 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:52,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:52,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1430553849, now seen corresponding path program 4 times [2020-10-16 11:25:52,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:52,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093765471] [2020-10-16 11:25:52,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:52,654 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:25:52,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093765471] [2020-10-16 11:25:52,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067893793] [2020-10-16 11:25:52,655 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:25:52,729 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:25:52,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:25:52,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:25:52,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:25:52,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:25:52,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:25:52,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2020-10-16 11:25:52,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082719806] [2020-10-16 11:25:52,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-16 11:25:52,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:52,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-16 11:25:52,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2020-10-16 11:25:52,972 INFO L87 Difference]: Start difference. First operand 8850 states and 40968 transitions. Second operand 24 states. [2020-10-16 11:25:58,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:58,835 INFO L93 Difference]: Finished difference Result 57837 states and 210293 transitions. [2020-10-16 11:25:58,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2020-10-16 11:25:58,836 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 21 [2020-10-16 11:25:58,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:58,969 INFO L225 Difference]: With dead ends: 57837 [2020-10-16 11:25:58,969 INFO L226 Difference]: Without dead ends: 57780 [2020-10-16 11:25:58,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5818 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2692, Invalid=12808, Unknown=0, NotChecked=0, Total=15500 [2020-10-16 11:25:59,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57780 states. [2020-10-16 11:25:59,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57780 to 9015. [2020-10-16 11:25:59,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9015 states. [2020-10-16 11:26:00,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9015 states to 9015 states and 42019 transitions. [2020-10-16 11:26:00,006 INFO L78 Accepts]: Start accepts. Automaton has 9015 states and 42019 transitions. Word has length 21 [2020-10-16 11:26:00,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:00,006 INFO L481 AbstractCegarLoop]: Abstraction has 9015 states and 42019 transitions. [2020-10-16 11:26:00,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-16 11:26:00,006 INFO L276 IsEmpty]: Start isEmpty. Operand 9015 states and 42019 transitions. [2020-10-16 11:26:00,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:26:00,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:00,008 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:00,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:00,208 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:26:00,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:00,209 INFO L82 PathProgramCache]: Analyzing trace with hash -2125563079, now seen corresponding path program 5 times [2020-10-16 11:26:00,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:00,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147454884] [2020-10-16 11:26:00,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:00,342 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:26:00,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147454884] [2020-10-16 11:26:00,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729950721] [2020-10-16 11:26:00,343 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:00,418 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 11:26:00,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:26:00,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:26:00,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:00,653 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:26:00,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:00,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2020-10-16 11:26:00,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531618580] [2020-10-16 11:26:00,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-16 11:26:00,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:00,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-16 11:26:00,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2020-10-16 11:26:00,655 INFO L87 Difference]: Start difference. First operand 9015 states and 42019 transitions. Second operand 24 states. [2020-10-16 11:26:05,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:05,851 INFO L93 Difference]: Finished difference Result 68007 states and 249502 transitions. [2020-10-16 11:26:05,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2020-10-16 11:26:05,852 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 21 [2020-10-16 11:26:05,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:06,033 INFO L225 Difference]: With dead ends: 68007 [2020-10-16 11:26:06,033 INFO L226 Difference]: Without dead ends: 67995 [2020-10-16 11:26:06,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4309 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2157, Invalid=10053, Unknown=0, NotChecked=0, Total=12210 [2020-10-16 11:26:06,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67995 states. [2020-10-16 11:26:07,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67995 to 8816. [2020-10-16 11:26:07,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8816 states. [2020-10-16 11:26:07,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8816 states to 8816 states and 41106 transitions. [2020-10-16 11:26:07,175 INFO L78 Accepts]: Start accepts. Automaton has 8816 states and 41106 transitions. Word has length 21 [2020-10-16 11:26:07,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:07,176 INFO L481 AbstractCegarLoop]: Abstraction has 8816 states and 41106 transitions. [2020-10-16 11:26:07,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-16 11:26:07,176 INFO L276 IsEmpty]: Start isEmpty. Operand 8816 states and 41106 transitions. [2020-10-16 11:26:07,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:26:07,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:07,177 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:07,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-16 11:26:07,378 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:26:07,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:07,378 INFO L82 PathProgramCache]: Analyzing trace with hash -2096487559, now seen corresponding path program 6 times [2020-10-16 11:26:07,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:07,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242058345] [2020-10-16 11:26:07,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:07,534 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:26:07,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242058345] [2020-10-16 11:26:07,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875301036] [2020-10-16 11:26:07,534 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:07,616 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 11:26:07,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:26:07,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:26:07,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:07,861 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:26:07,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:07,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2020-10-16 11:26:07,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865295858] [2020-10-16 11:26:07,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-16 11:26:07,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:07,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-16 11:26:07,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2020-10-16 11:26:07,863 INFO L87 Difference]: Start difference. First operand 8816 states and 41106 transitions. Second operand 24 states. [2020-10-16 11:26:13,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:13,843 INFO L93 Difference]: Finished difference Result 75874 states and 283623 transitions. [2020-10-16 11:26:13,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-10-16 11:26:13,844 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 21 [2020-10-16 11:26:13,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:14,370 INFO L225 Difference]: With dead ends: 75874 [2020-10-16 11:26:14,370 INFO L226 Difference]: Without dead ends: 75841 [2020-10-16 11:26:14,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4110 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2116, Invalid=9656, Unknown=0, NotChecked=0, Total=11772 [2020-10-16 11:26:14,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75841 states. [2020-10-16 11:26:15,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75841 to 8779. [2020-10-16 11:26:15,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8779 states. [2020-10-16 11:26:15,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8779 states to 8779 states and 41239 transitions. [2020-10-16 11:26:15,224 INFO L78 Accepts]: Start accepts. Automaton has 8779 states and 41239 transitions. Word has length 21 [2020-10-16 11:26:15,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:15,224 INFO L481 AbstractCegarLoop]: Abstraction has 8779 states and 41239 transitions. [2020-10-16 11:26:15,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-16 11:26:15,224 INFO L276 IsEmpty]: Start isEmpty. Operand 8779 states and 41239 transitions. [2020-10-16 11:26:15,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:26:15,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:15,225 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:15,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-10-16 11:26:15,426 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:26:15,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:15,427 INFO L82 PathProgramCache]: Analyzing trace with hash -305805433, now seen corresponding path program 1 times [2020-10-16 11:26:15,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:15,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732684664] [2020-10-16 11:26:15,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:15,465 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:26:15,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732684664] [2020-10-16 11:26:15,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:26:15,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:26:15,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106966562] [2020-10-16 11:26:15,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:26:15,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:15,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:26:15,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:26:15,466 INFO L87 Difference]: Start difference. First operand 8779 states and 41239 transitions. Second operand 5 states. [2020-10-16 11:26:15,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:15,705 INFO L93 Difference]: Finished difference Result 16198 states and 70654 transitions. [2020-10-16 11:26:15,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:26:15,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-16 11:26:15,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:15,745 INFO L225 Difference]: With dead ends: 16198 [2020-10-16 11:26:15,745 INFO L226 Difference]: Without dead ends: 16167 [2020-10-16 11:26:15,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:26:15,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16167 states. [2020-10-16 11:26:16,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16167 to 10308. [2020-10-16 11:26:16,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10308 states. [2020-10-16 11:26:16,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10308 states to 10308 states and 48350 transitions. [2020-10-16 11:26:16,061 INFO L78 Accepts]: Start accepts. Automaton has 10308 states and 48350 transitions. Word has length 21 [2020-10-16 11:26:16,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:16,061 INFO L481 AbstractCegarLoop]: Abstraction has 10308 states and 48350 transitions. [2020-10-16 11:26:16,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:26:16,061 INFO L276 IsEmpty]: Start isEmpty. Operand 10308 states and 48350 transitions. [2020-10-16 11:26:16,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:26:16,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:16,063 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:16,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-16 11:26:16,063 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:26:16,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:16,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1520619002, now seen corresponding path program 1 times [2020-10-16 11:26:16,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:16,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835313127] [2020-10-16 11:26:16,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:26:16,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835313127] [2020-10-16 11:26:16,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787542751] [2020-10-16 11:26:16,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:16,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 11:26:16,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:16,504 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:26:16,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:16,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2020-10-16 11:26:16,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23097465] [2020-10-16 11:26:16,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-16 11:26:16,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:16,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-16 11:26:16,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2020-10-16 11:26:16,507 INFO L87 Difference]: Start difference. First operand 10308 states and 48350 transitions. Second operand 22 states. [2020-10-16 11:26:19,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:19,434 INFO L93 Difference]: Finished difference Result 26201 states and 106927 transitions. [2020-10-16 11:26:19,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-16 11:26:19,435 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 23 [2020-10-16 11:26:19,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:19,715 INFO L225 Difference]: With dead ends: 26201 [2020-10-16 11:26:19,716 INFO L226 Difference]: Without dead ends: 26178 [2020-10-16 11:26:19,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=678, Invalid=2628, Unknown=0, NotChecked=0, Total=3306 [2020-10-16 11:26:19,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26178 states. [2020-10-16 11:26:20,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26178 to 10322. [2020-10-16 11:26:20,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10322 states. [2020-10-16 11:26:20,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10322 states to 10322 states and 48233 transitions. [2020-10-16 11:26:20,138 INFO L78 Accepts]: Start accepts. Automaton has 10322 states and 48233 transitions. Word has length 23 [2020-10-16 11:26:20,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:20,138 INFO L481 AbstractCegarLoop]: Abstraction has 10322 states and 48233 transitions. [2020-10-16 11:26:20,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-16 11:26:20,138 INFO L276 IsEmpty]: Start isEmpty. Operand 10322 states and 48233 transitions. [2020-10-16 11:26:20,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:26:20,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:20,141 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:20,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:20,355 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:26:20,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:20,355 INFO L82 PathProgramCache]: Analyzing trace with hash -2131590985, now seen corresponding path program 1 times [2020-10-16 11:26:20,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:20,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381856456] [2020-10-16 11:26:20,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:20,470 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:26:20,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381856456] [2020-10-16 11:26:20,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629870181] [2020-10-16 11:26:20,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:20,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 11:26:20,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:20,758 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:26:20,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:20,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2020-10-16 11:26:20,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694662186] [2020-10-16 11:26:20,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-16 11:26:20,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:20,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-16 11:26:20,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2020-10-16 11:26:20,760 INFO L87 Difference]: Start difference. First operand 10322 states and 48233 transitions. Second operand 22 states. [2020-10-16 11:26:23,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:23,262 INFO L93 Difference]: Finished difference Result 27459 states and 111719 transitions. [2020-10-16 11:26:23,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-16 11:26:23,263 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 23 [2020-10-16 11:26:23,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:23,329 INFO L225 Difference]: With dead ends: 27459 [2020-10-16 11:26:23,329 INFO L226 Difference]: Without dead ends: 27434 [2020-10-16 11:26:23,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=611, Invalid=2041, Unknown=0, NotChecked=0, Total=2652 [2020-10-16 11:26:23,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27434 states. [2020-10-16 11:26:23,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27434 to 10334. [2020-10-16 11:26:23,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10334 states. [2020-10-16 11:26:23,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10334 states to 10334 states and 48087 transitions. [2020-10-16 11:26:23,778 INFO L78 Accepts]: Start accepts. Automaton has 10334 states and 48087 transitions. Word has length 23 [2020-10-16 11:26:23,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:23,778 INFO L481 AbstractCegarLoop]: Abstraction has 10334 states and 48087 transitions. [2020-10-16 11:26:23,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-16 11:26:23,778 INFO L276 IsEmpty]: Start isEmpty. Operand 10334 states and 48087 transitions. [2020-10-16 11:26:23,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:26:23,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:23,780 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:23,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:23,981 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:26:23,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:23,982 INFO L82 PathProgramCache]: Analyzing trace with hash 2123174490, now seen corresponding path program 1 times [2020-10-16 11:26:23,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:23,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550957809] [2020-10-16 11:26:23,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:24,097 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:26:24,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550957809] [2020-10-16 11:26:24,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240282923] [2020-10-16 11:26:24,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:24,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 11:26:24,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:24,428 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:26:24,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:24,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2020-10-16 11:26:24,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141478472] [2020-10-16 11:26:24,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-16 11:26:24,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:24,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-16 11:26:24,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2020-10-16 11:26:24,430 INFO L87 Difference]: Start difference. First operand 10334 states and 48087 transitions. Second operand 22 states. [2020-10-16 11:26:26,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:26,608 INFO L93 Difference]: Finished difference Result 27678 states and 112557 transitions. [2020-10-16 11:26:26,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-16 11:26:26,610 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 23 [2020-10-16 11:26:26,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:26,690 INFO L225 Difference]: With dead ends: 27678 [2020-10-16 11:26:26,690 INFO L226 Difference]: Without dead ends: 27648 [2020-10-16 11:26:26,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=510, Invalid=1746, Unknown=0, NotChecked=0, Total=2256 [2020-10-16 11:26:26,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27648 states. [2020-10-16 11:26:27,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27648 to 10519. [2020-10-16 11:26:27,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10519 states. [2020-10-16 11:26:27,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10519 states to 10519 states and 48808 transitions. [2020-10-16 11:26:27,136 INFO L78 Accepts]: Start accepts. Automaton has 10519 states and 48808 transitions. Word has length 23 [2020-10-16 11:26:27,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:27,136 INFO L481 AbstractCegarLoop]: Abstraction has 10519 states and 48808 transitions. [2020-10-16 11:26:27,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-16 11:26:27,136 INFO L276 IsEmpty]: Start isEmpty. Operand 10519 states and 48808 transitions. [2020-10-16 11:26:27,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:26:27,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:27,139 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:27,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:27,339 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:26:27,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:27,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1821264969, now seen corresponding path program 2 times [2020-10-16 11:26:27,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:27,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500600316] [2020-10-16 11:26:27,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:27,467 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:26:27,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500600316] [2020-10-16 11:26:27,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565389891] [2020-10-16 11:26:27,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:27,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:26:27,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:26:27,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:26:27,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:27,707 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:26:27,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:27,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18 [2020-10-16 11:26:27,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639919799] [2020-10-16 11:26:27,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-16 11:26:27,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:27,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-16 11:26:27,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:26:27,709 INFO L87 Difference]: Start difference. First operand 10519 states and 48808 transitions. Second operand 20 states. [2020-10-16 11:26:29,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:29,420 INFO L93 Difference]: Finished difference Result 28219 states and 115749 transitions. [2020-10-16 11:26:29,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-16 11:26:29,421 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2020-10-16 11:26:29,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:29,490 INFO L225 Difference]: With dead ends: 28219 [2020-10-16 11:26:29,491 INFO L226 Difference]: Without dead ends: 28182 [2020-10-16 11:26:29,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=426, Invalid=1214, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 11:26:29,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28182 states. [2020-10-16 11:26:29,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28182 to 10495. [2020-10-16 11:26:29,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10495 states. [2020-10-16 11:26:29,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10495 states to 10495 states and 48707 transitions. [2020-10-16 11:26:29,946 INFO L78 Accepts]: Start accepts. Automaton has 10495 states and 48707 transitions. Word has length 23 [2020-10-16 11:26:29,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:29,947 INFO L481 AbstractCegarLoop]: Abstraction has 10495 states and 48707 transitions. [2020-10-16 11:26:29,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-16 11:26:29,947 INFO L276 IsEmpty]: Start isEmpty. Operand 10495 states and 48707 transitions. [2020-10-16 11:26:29,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:26:29,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:29,949 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:30,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-10-16 11:26:30,150 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:26:30,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:30,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1821234682, now seen corresponding path program 2 times [2020-10-16 11:26:30,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:30,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062131044] [2020-10-16 11:26:30,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:30,281 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:26:30,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062131044] [2020-10-16 11:26:30,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012858326] [2020-10-16 11:26:30,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:30,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:26:30,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:26:30,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:26:30,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:30,525 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:26:30,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:30,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18 [2020-10-16 11:26:30,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632062182] [2020-10-16 11:26:30,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-16 11:26:30,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:30,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-16 11:26:30,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:26:30,528 INFO L87 Difference]: Start difference. First operand 10495 states and 48707 transitions. Second operand 20 states. [2020-10-16 11:26:32,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:32,566 INFO L93 Difference]: Finished difference Result 30803 states and 128260 transitions. [2020-10-16 11:26:32,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-16 11:26:32,567 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2020-10-16 11:26:32,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:32,645 INFO L225 Difference]: With dead ends: 30803 [2020-10-16 11:26:32,645 INFO L226 Difference]: Without dead ends: 30766 [2020-10-16 11:26:32,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=426, Invalid=1214, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 11:26:32,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30766 states. [2020-10-16 11:26:33,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30766 to 10348. [2020-10-16 11:26:33,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10348 states. [2020-10-16 11:26:33,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10348 states to 10348 states and 48028 transitions. [2020-10-16 11:26:33,312 INFO L78 Accepts]: Start accepts. Automaton has 10348 states and 48028 transitions. Word has length 23 [2020-10-16 11:26:33,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:33,312 INFO L481 AbstractCegarLoop]: Abstraction has 10348 states and 48028 transitions. [2020-10-16 11:26:33,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-16 11:26:33,312 INFO L276 IsEmpty]: Start isEmpty. Operand 10348 states and 48028 transitions. [2020-10-16 11:26:33,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:26:33,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:33,316 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:33,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:33,524 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:26:33,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:33,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1821243238, now seen corresponding path program 2 times [2020-10-16 11:26:33,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:33,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080476835] [2020-10-16 11:26:33,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:33,664 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:26:33,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080476835] [2020-10-16 11:26:33,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667429014] [2020-10-16 11:26:33,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:33,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:26:33,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:26:33,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:26:33,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:33,900 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:26:33,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:33,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18 [2020-10-16 11:26:33,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853784711] [2020-10-16 11:26:33,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-16 11:26:33,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:33,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-16 11:26:33,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:26:33,902 INFO L87 Difference]: Start difference. First operand 10348 states and 48028 transitions. Second operand 20 states. [2020-10-16 11:26:35,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:35,458 INFO L93 Difference]: Finished difference Result 22369 states and 92565 transitions. [2020-10-16 11:26:35,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-16 11:26:35,459 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2020-10-16 11:26:35,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:35,510 INFO L225 Difference]: With dead ends: 22369 [2020-10-16 11:26:35,511 INFO L226 Difference]: Without dead ends: 22332 [2020-10-16 11:26:35,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2020-10-16 11:26:35,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22332 states. [2020-10-16 11:26:35,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22332 to 10518. [2020-10-16 11:26:35,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10518 states. [2020-10-16 11:26:35,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10518 states to 10518 states and 48785 transitions. [2020-10-16 11:26:35,888 INFO L78 Accepts]: Start accepts. Automaton has 10518 states and 48785 transitions. Word has length 23 [2020-10-16 11:26:35,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:35,888 INFO L481 AbstractCegarLoop]: Abstraction has 10518 states and 48785 transitions. [2020-10-16 11:26:35,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-16 11:26:35,889 INFO L276 IsEmpty]: Start isEmpty. Operand 10518 states and 48785 transitions. [2020-10-16 11:26:35,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:26:35,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:35,893 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:36,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:36,093 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:26:36,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:36,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1336326282, now seen corresponding path program 1 times [2020-10-16 11:26:36,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:36,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119411575] [2020-10-16 11:26:36,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:36,240 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:26:36,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119411575] [2020-10-16 11:26:36,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48644380] [2020-10-16 11:26:36,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:36,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-16 11:26:36,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:36,660 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:26:36,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:36,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 23 [2020-10-16 11:26:36,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593922606] [2020-10-16 11:26:36,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-16 11:26:36,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:36,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-16 11:26:36,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2020-10-16 11:26:36,663 INFO L87 Difference]: Start difference. First operand 10518 states and 48785 transitions. Second operand 25 states. [2020-10-16 11:26:43,270 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2020-10-16 11:26:47,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:47,250 INFO L93 Difference]: Finished difference Result 48069 states and 178661 transitions. [2020-10-16 11:26:47,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2020-10-16 11:26:47,252 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2020-10-16 11:26:47,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:47,364 INFO L225 Difference]: With dead ends: 48069 [2020-10-16 11:26:47,364 INFO L226 Difference]: Without dead ends: 48009 [2020-10-16 11:26:47,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9459 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=3695, Invalid=21427, Unknown=0, NotChecked=0, Total=25122 [2020-10-16 11:26:47,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48009 states. [2020-10-16 11:26:48,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48009 to 10696. [2020-10-16 11:26:48,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10696 states. [2020-10-16 11:26:48,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10696 states to 10696 states and 49659 transitions. [2020-10-16 11:26:48,062 INFO L78 Accepts]: Start accepts. Automaton has 10696 states and 49659 transitions. Word has length 25 [2020-10-16 11:26:48,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:48,062 INFO L481 AbstractCegarLoop]: Abstraction has 10696 states and 49659 transitions. [2020-10-16 11:26:48,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-16 11:26:48,063 INFO L276 IsEmpty]: Start isEmpty. Operand 10696 states and 49659 transitions. [2020-10-16 11:26:48,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:26:48,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:48,066 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:48,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2020-10-16 11:26:48,267 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:26:48,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:48,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1376528103, now seen corresponding path program 1 times [2020-10-16 11:26:48,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:48,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531009229] [2020-10-16 11:26:48,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:48,388 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:26:48,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531009229] [2020-10-16 11:26:48,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938252247] [2020-10-16 11:26:48,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:48,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-16 11:26:48,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:48,782 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:26:48,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:48,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 22 [2020-10-16 11:26:48,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971841321] [2020-10-16 11:26:48,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-16 11:26:48,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:48,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-16 11:26:48,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2020-10-16 11:26:48,783 INFO L87 Difference]: Start difference. First operand 10696 states and 49659 transitions. Second operand 24 states. [2020-10-16 11:26:57,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:57,906 INFO L93 Difference]: Finished difference Result 47545 states and 177328 transitions. [2020-10-16 11:26:57,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2020-10-16 11:26:57,906 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 25 [2020-10-16 11:26:57,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:58,014 INFO L225 Difference]: With dead ends: 47545 [2020-10-16 11:26:58,015 INFO L226 Difference]: Without dead ends: 47492 [2020-10-16 11:26:58,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7402 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=2937, Invalid=17085, Unknown=0, NotChecked=0, Total=20022 [2020-10-16 11:26:58,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47492 states. [2020-10-16 11:26:58,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47492 to 11019. [2020-10-16 11:26:58,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11019 states. [2020-10-16 11:26:58,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11019 states to 11019 states and 51222 transitions. [2020-10-16 11:26:58,723 INFO L78 Accepts]: Start accepts. Automaton has 11019 states and 51222 transitions. Word has length 25 [2020-10-16 11:26:58,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:58,724 INFO L481 AbstractCegarLoop]: Abstraction has 11019 states and 51222 transitions. [2020-10-16 11:26:58,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-16 11:26:58,724 INFO L276 IsEmpty]: Start isEmpty. Operand 11019 states and 51222 transitions. [2020-10-16 11:26:58,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:26:58,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:58,728 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:58,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-10-16 11:26:58,929 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:26:58,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:58,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1026000266, now seen corresponding path program 2 times [2020-10-16 11:26:58,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:58,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421369411] [2020-10-16 11:26:58,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:59,090 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:26:59,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421369411] [2020-10-16 11:26:59,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87035285] [2020-10-16 11:26:59,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:59,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:26:59,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:26:59,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:26:59,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:59,511 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 11:26:59,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:59,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 23 [2020-10-16 11:26:59,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57796338] [2020-10-16 11:26:59,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-16 11:26:59,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:59,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-16 11:26:59,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2020-10-16 11:26:59,512 INFO L87 Difference]: Start difference. First operand 11019 states and 51222 transitions. Second operand 25 states. [2020-10-16 11:27:12,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:27:12,951 INFO L93 Difference]: Finished difference Result 63804 states and 240433 transitions. [2020-10-16 11:27:12,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2020-10-16 11:27:12,952 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2020-10-16 11:27:12,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:27:13,102 INFO L225 Difference]: With dead ends: 63804 [2020-10-16 11:27:13,103 INFO L226 Difference]: Without dead ends: 63683 [2020-10-16 11:27:13,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12973 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=5140, Invalid=28900, Unknown=0, NotChecked=0, Total=34040 [2020-10-16 11:27:13,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63683 states. [2020-10-16 11:27:13,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63683 to 10954. [2020-10-16 11:27:13,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10954 states. [2020-10-16 11:27:13,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10954 states to 10954 states and 50857 transitions. [2020-10-16 11:27:13,997 INFO L78 Accepts]: Start accepts. Automaton has 10954 states and 50857 transitions. Word has length 25 [2020-10-16 11:27:13,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:27:13,997 INFO L481 AbstractCegarLoop]: Abstraction has 10954 states and 50857 transitions. [2020-10-16 11:27:13,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-16 11:27:13,997 INFO L276 IsEmpty]: Start isEmpty. Operand 10954 states and 50857 transitions. [2020-10-16 11:27:14,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:27:14,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:27:14,001 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:27:14,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2020-10-16 11:27:14,202 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:27:14,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:27:14,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1025978535, now seen corresponding path program 2 times [2020-10-16 11:27:14,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:27:14,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219737871] [2020-10-16 11:27:14,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:27:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:27:14,411 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:27:14,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219737871] [2020-10-16 11:27:14,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676570119] [2020-10-16 11:27:14,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:27:14,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:27:14,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:27:14,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:27:14,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:27:15,052 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 11:27:15,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:27:15,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 23 [2020-10-16 11:27:15,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516965695] [2020-10-16 11:27:15,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-16 11:27:15,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:27:15,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-16 11:27:15,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2020-10-16 11:27:15,054 INFO L87 Difference]: Start difference. First operand 10954 states and 50857 transitions. Second operand 25 states. [2020-10-16 11:27:17,554 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 Received shutdown request... [2020-10-16 11:27:22,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2020-10-16 11:27:22,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:27:22,533 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 11:27:22,539 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 11:27:22,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:27:22 BasicIcfg [2020-10-16 11:27:22,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:27:22,541 INFO L168 Benchmark]: Toolchain (without parser) took 247101.50 ms. Allocated memory was 139.5 MB in the beginning and 2.2 GB in the end (delta: 2.1 GB). Free memory was 101.4 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 768.8 MB. Max. memory is 7.1 GB. [2020-10-16 11:27:22,541 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 11:27:22,542 INFO L168 Benchmark]: CACSL2BoogieTranslator took 676.78 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 160.1 MB in the end (delta: -58.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-10-16 11:27:22,542 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.82 ms. Allocated memory is still 202.9 MB. Free memory was 160.1 MB in the beginning and 158.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:27:22,542 INFO L168 Benchmark]: Boogie Preprocessor took 29.95 ms. Allocated memory is still 202.9 MB. Free memory was 158.0 MB in the beginning and 156.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-16 11:27:22,542 INFO L168 Benchmark]: RCFGBuilder took 392.98 ms. Allocated memory is still 202.9 MB. Free memory was 156.6 MB in the beginning and 135.5 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-10-16 11:27:22,543 INFO L168 Benchmark]: TraceAbstraction took 245946.03 ms. Allocated memory was 202.9 MB in the beginning and 2.2 GB in the end (delta: 2.0 GB). Free memory was 135.5 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 739.4 MB. Max. memory is 7.1 GB. [2020-10-16 11:27:22,545 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 676.78 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 160.1 MB in the end (delta: -58.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.82 ms. Allocated memory is still 202.9 MB. Free memory was 160.1 MB in the beginning and 158.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.95 ms. Allocated memory is still 202.9 MB. Free memory was 158.0 MB in the beginning and 156.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 392.98 ms. Allocated memory is still 202.9 MB. Free memory was 156.6 MB in the beginning and 135.5 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 245946.03 ms. Allocated memory was 202.9 MB in the beginning and 2.2 GB in the end (delta: 2.0 GB). Free memory was 135.5 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 739.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 475 VarBasedMoverChecksPositive, 3 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 3 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 64 PlacesBefore, 18 PlacesAfterwards, 61 TransitionsBefore, 12 TransitionsAfterwards, 692 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 61 TotalNumberOfCompositions, 623 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 742 VarBasedMoverChecksPositive, 15 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 15 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 33 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 85 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 21 TransitionsAfterwards, 1108 CoEnabledTransitionPairs, 6 FixpointIterations, 31 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 6 ConcurrentYvCompositions, 4 ChoiceCompositions, 72 TotalNumberOfCompositions, 1509 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1028 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 21 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 56 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 106 PlacesBefore, 41 PlacesAfterwards, 97 TransitionsBefore, 27 TransitionsAfterwards, 1608 CoEnabledTransitionPairs, 6 FixpointIterations, 47 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 94 TotalNumberOfCompositions, 2380 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1330 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 21 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 52 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 127 PlacesBefore, 51 PlacesAfterwards, 115 TransitionsBefore, 33 TransitionsAfterwards, 2192 CoEnabledTransitionPairs, 6 FixpointIterations, 54 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 3 ConcurrentYvCompositions, 6 ChoiceCompositions, 107 TotalNumberOfCompositions, 3160 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1684 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 73 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.6s, 148 PlacesBefore, 61 PlacesAfterwards, 133 TransitionsBefore, 39 TransitionsAfterwards, 2860 CoEnabledTransitionPairs, 5 FixpointIterations, 62 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 4 ConcurrentYvCompositions, 7 ChoiceCompositions, 126 TotalNumberOfCompositions, 4341 MoverChecksTotal - TimeoutResultAtElement [Line: 679]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 679). Cancelled while BasicCegarLoop was constructing difference of abstraction (10954states) and FLOYD_HOARE automaton (currently 95 states, 25 states before enhancement),while ReachableStatesComputation was computing reachable states (4137 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 58 locations, 1 error locations. Started 5 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 245.6s, OverallIterations: 70, TraceHistogramMax: 5, AutomataDifference: 186.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.6s, HoareTripleCheckerStatistics: 3163 SDtfs, 26549 SDslu, 27188 SDs, 0 SdLazy, 74822 SolverSat, 4231 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 49.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4550 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 4099 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166902 ImplicationChecksByTransitivity, 106.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11019occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 18.7s AutomataMinimizationTime, 65 MinimizatonAttempts, 847733 StatesRemovedByMinimization, 59 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 15.2s InterpolantComputationTime, 2159 NumberOfCodeBlocks, 2159 NumberOfCodeBlocksAsserted, 158 NumberOfCheckSat, 1984 ConstructedInterpolants, 0 QuantifiedInterpolants, 223264 SizeOfPredicates, 281 NumberOfNonLiveVariables, 5562 ConjunctsInSsa, 506 ConjunctsInUnsatCore, 113 InterpolantComputations, 19 PerfectInterpolantSequences, 286/924 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