/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-wmm/safe001_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-16 23:00:48,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 23:00:48,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 23:00:48,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 23:00:48,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 23:00:48,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 23:00:48,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 23:00:48,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 23:00:48,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 23:00:48,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 23:00:48,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 23:00:48,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 23:00:48,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 23:00:48,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 23:00:48,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 23:00:48,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 23:00:48,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 23:00:48,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 23:00:48,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 23:00:48,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 23:00:48,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 23:00:48,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 23:00:48,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 23:00:48,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 23:00:48,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-16 23:00:48,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-16 23:00:48,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-16 23:00:48,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-16 23:00:48,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-16 23:00:48,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-16 23:00:48,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 23:00:48,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 23:00:48,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 23:00:48,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 23:00:48,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 23:00:48,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 23:00:48,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 23:00:48,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 23:00:48,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 23:00:48,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 23:00:48,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 23:00:48,308 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-16 23:00:48,350 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 23:00:48,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 23:00:48,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 23:00:48,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 23:00:48,353 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 23:00:48,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 23:00:48,353 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 23:00:48,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 23:00:48,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 23:00:48,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 23:00:48,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 23:00:48,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 23:00:48,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 23:00:48,356 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 23:00:48,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 23:00:48,356 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 23:00:48,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 23:00:48,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 23:00:48,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 23:00:48,357 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 23:00:48,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 23:00:48,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 23:00:48,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 23:00:48,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-16 23:00:48,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 23:00:48,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 23:00:48,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 23:00:48,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 23:00:48,359 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-16 23:00:48,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-16 23:00:48,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 23:00:48,826 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 23:00:48,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 23:00:48,832 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 23:00:48,833 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 23:00:48,834 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2020-09-16 23:00:48,917 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8558f85e8/fcf5427cc7544f3b90433dc5a267f69c/FLAG7078f088e [2020-09-16 23:00:49,515 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 23:00:49,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2020-09-16 23:00:49,536 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8558f85e8/fcf5427cc7544f3b90433dc5a267f69c/FLAG7078f088e [2020-09-16 23:00:49,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8558f85e8/fcf5427cc7544f3b90433dc5a267f69c [2020-09-16 23:00:49,773 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 23:00:49,778 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 23:00:49,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 23:00:49,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 23:00:49,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 23:00:49,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:00:49" (1/1) ... [2020-09-16 23:00:49,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55d5b9a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:49, skipping insertion in model container [2020-09-16 23:00:49,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:00:49" (1/1) ... [2020-09-16 23:00:49,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 23:00:49,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 23:00:50,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 23:00:50,511 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 23:00:50,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 23:00:50,653 INFO L208 MainTranslator]: Completed translation [2020-09-16 23:00:50,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:50 WrapperNode [2020-09-16 23:00:50,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 23:00:50,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 23:00:50,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 23:00:50,656 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 23:00:50,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:50" (1/1) ... [2020-09-16 23:00:50,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:50" (1/1) ... [2020-09-16 23:00:50,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 23:00:50,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 23:00:50,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 23:00:50,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 23:00:50,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:50" (1/1) ... [2020-09-16 23:00:50,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:50" (1/1) ... [2020-09-16 23:00:50,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:50" (1/1) ... [2020-09-16 23:00:50,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:50" (1/1) ... [2020-09-16 23:00:50,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:50" (1/1) ... [2020-09-16 23:00:50,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:50" (1/1) ... [2020-09-16 23:00:50,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:50" (1/1) ... [2020-09-16 23:00:50,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 23:00:50,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 23:00:50,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 23:00:50,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 23:00:50,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 23:00:50,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 23:00:50,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-16 23:00:50,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 23:00:50,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 23:00:50,847 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-16 23:00:50,848 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-16 23:00:50,848 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-16 23:00:50,849 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-16 23:00:50,849 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-16 23:00:50,850 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-16 23:00:50,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-16 23:00:50,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 23:00:50,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 23:00:50,853 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 23:00:51,253 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 23:00:51,254 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-16 23:00:51,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:00:51 BoogieIcfgContainer [2020-09-16 23:00:51,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 23:00:51,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 23:00:51,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 23:00:51,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 23:00:51,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:00:49" (1/3) ... [2020-09-16 23:00:51,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5ee77e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:00:51, skipping insertion in model container [2020-09-16 23:00:51,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:50" (2/3) ... [2020-09-16 23:00:51,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5ee77e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:00:51, skipping insertion in model container [2020-09-16 23:00:51,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:00:51" (3/3) ... [2020-09-16 23:00:51,269 INFO L109 eAbstractionObserver]: Analyzing ICFG safe001_tso.oepc.i [2020-09-16 23:00:51,281 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 23:00:51,281 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-16 23:00:51,291 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 23:00:51,292 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 23:00:51,322 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,323 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,323 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,323 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,324 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,324 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,325 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,325 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,325 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,325 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,326 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,326 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,327 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,327 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,327 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,327 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,328 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,328 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,333 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,333 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,333 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,334 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,344 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,344 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,344 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,345 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,349 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,349 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,349 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,349 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:00:51,374 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-16 23:00:51,403 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 23:00:51,403 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 23:00:51,404 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-16 23:00:51,404 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-16 23:00:51,404 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 23:00:51,404 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 23:00:51,404 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 23:00:51,405 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 23:00:51,423 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-16 23:00:51,426 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-16 23:00:51,475 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-16 23:00:51,475 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 23:00:51,482 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-16 23:00:51,488 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-16 23:00:51,508 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-16 23:00:51,509 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 23:00:51,509 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-16 23:00:51,512 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-16 23:00:51,513 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-16 23:00:53,142 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-09-16 23:00:53,325 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2483 [2020-09-16 23:00:53,326 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-09-16 23:00:53,330 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-16 23:00:53,358 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-16 23:00:53,361 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-16 23:00:53,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-16 23:00:53,371 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:00:53,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:00:53,373 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:00:53,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:00:53,381 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-09-16 23:00:53,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:00:53,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729843189] [2020-09-16 23:00:53,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:00:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:00:53,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:00:53,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729843189] [2020-09-16 23:00:53,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:00:53,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 23:00:53,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518518458] [2020-09-16 23:00:53,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 23:00:53,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:00:53,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 23:00:53,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:00:53,704 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-16 23:00:53,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:00:53,759 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-16 23:00:53,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 23:00:53,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-16 23:00:53,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:00:53,784 INFO L225 Difference]: With dead ends: 282 [2020-09-16 23:00:53,785 INFO L226 Difference]: Without dead ends: 218 [2020-09-16 23:00:53,786 INFO L675 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 [2020-09-16 23:00:53,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-16 23:00:53,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-16 23:00:53,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-16 23:00:53,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-16 23:00:53,871 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-16 23:00:53,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:00:53,873 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-16 23:00:53,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 23:00:53,873 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-16 23:00:53,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 23:00:53,874 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:00:53,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:00:53,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 23:00:53,875 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:00:53,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:00:53,876 INFO L82 PathProgramCache]: Analyzing trace with hash 971209488, now seen corresponding path program 1 times [2020-09-16 23:00:53,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:00:53,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841025402] [2020-09-16 23:00:53,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:00:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:00:54,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:00:54,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841025402] [2020-09-16 23:00:54,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:00:54,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:00:54,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311015515] [2020-09-16 23:00:54,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:00:54,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:00:54,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:00:54,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:00:54,030 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-09-16 23:00:54,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:00:54,060 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-09-16 23:00:54,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 23:00:54,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-16 23:00:54,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:00:54,063 INFO L225 Difference]: With dead ends: 242 [2020-09-16 23:00:54,063 INFO L226 Difference]: Without dead ends: 146 [2020-09-16 23:00:54,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:00:54,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-16 23:00:54,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-16 23:00:54,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-16 23:00:54,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-09-16 23:00:54,081 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-09-16 23:00:54,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:00:54,081 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-09-16 23:00:54,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:00:54,082 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-09-16 23:00:54,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-16 23:00:54,088 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:00:54,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:00:54,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 23:00:54,089 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:00:54,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:00:54,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1304596236, now seen corresponding path program 1 times [2020-09-16 23:00:54,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:00:54,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63007050] [2020-09-16 23:00:54,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:00:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:00:54,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:00:54,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63007050] [2020-09-16 23:00:54,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:00:54,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:00:54,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062960271] [2020-09-16 23:00:54,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 23:00:54,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:00:54,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 23:00:54,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:00:54,184 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-09-16 23:00:54,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:00:54,200 INFO L93 Difference]: Finished difference Result 138 states and 336 transitions. [2020-09-16 23:00:54,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 23:00:54,200 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-16 23:00:54,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:00:54,202 INFO L225 Difference]: With dead ends: 138 [2020-09-16 23:00:54,202 INFO L226 Difference]: Without dead ends: 138 [2020-09-16 23:00:54,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:00:54,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-16 23:00:54,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-09-16 23:00:54,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-16 23:00:54,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 336 transitions. [2020-09-16 23:00:54,213 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 336 transitions. Word has length 11 [2020-09-16 23:00:54,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:00:54,213 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 336 transitions. [2020-09-16 23:00:54,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 23:00:54,214 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 336 transitions. [2020-09-16 23:00:54,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 23:00:54,215 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:00:54,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:00:54,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 23:00:54,216 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:00:54,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:00:54,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1787779324, now seen corresponding path program 1 times [2020-09-16 23:00:54,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:00:54,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130429467] [2020-09-16 23:00:54,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:00:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:00:54,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:00:54,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130429467] [2020-09-16 23:00:54,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:00:54,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 23:00:54,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118605821] [2020-09-16 23:00:54,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 23:00:54,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:00:54,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 23:00:54,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:00:54,292 INFO L87 Difference]: Start difference. First operand 138 states and 336 transitions. Second operand 3 states. [2020-09-16 23:00:54,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:00:54,298 INFO L93 Difference]: Finished difference Result 134 states and 324 transitions. [2020-09-16 23:00:54,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 23:00:54,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-16 23:00:54,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:00:54,300 INFO L225 Difference]: With dead ends: 134 [2020-09-16 23:00:54,300 INFO L226 Difference]: Without dead ends: 134 [2020-09-16 23:00:54,301 INFO L675 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 [2020-09-16 23:00:54,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-16 23:00:54,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-09-16 23:00:54,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-16 23:00:54,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 324 transitions. [2020-09-16 23:00:54,310 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 324 transitions. Word has length 12 [2020-09-16 23:00:54,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:00:54,311 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 324 transitions. [2020-09-16 23:00:54,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 23:00:54,311 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 324 transitions. [2020-09-16 23:00:54,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-16 23:00:54,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:00:54,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:00:54,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 23:00:54,313 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:00:54,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:00:54,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1034166645, now seen corresponding path program 1 times [2020-09-16 23:00:54,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:00:54,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041103845] [2020-09-16 23:00:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:00:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:00:54,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:00:54,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041103845] [2020-09-16 23:00:54,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:00:54,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:00:54,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188850788] [2020-09-16 23:00:54,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:00:54,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:00:54,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:00:54,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:00:54,374 INFO L87 Difference]: Start difference. First operand 134 states and 324 transitions. Second operand 4 states. [2020-09-16 23:00:54,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:00:54,396 INFO L93 Difference]: Finished difference Result 194 states and 466 transitions. [2020-09-16 23:00:54,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 23:00:54,397 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-16 23:00:54,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:00:54,398 INFO L225 Difference]: With dead ends: 194 [2020-09-16 23:00:54,398 INFO L226 Difference]: Without dead ends: 104 [2020-09-16 23:00:54,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:00:54,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-16 23:00:54,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-16 23:00:54,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-16 23:00:54,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-09-16 23:00:54,406 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 13 [2020-09-16 23:00:54,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:00:54,406 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-09-16 23:00:54,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:00:54,407 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-09-16 23:00:54,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-16 23:00:54,408 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:00:54,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:00:54,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-16 23:00:54,409 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:00:54,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:00:54,409 INFO L82 PathProgramCache]: Analyzing trace with hash -589742481, now seen corresponding path program 2 times [2020-09-16 23:00:54,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:00:54,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883524957] [2020-09-16 23:00:54,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:00:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:00:54,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:00:54,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883524957] [2020-09-16 23:00:54,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:00:54,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 23:00:54,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234706442] [2020-09-16 23:00:54,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:00:54,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:00:54,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:00:54,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:00:54,465 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 4 states. [2020-09-16 23:00:54,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:00:54,487 INFO L93 Difference]: Finished difference Result 128 states and 298 transitions. [2020-09-16 23:00:54,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 23:00:54,488 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-16 23:00:54,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:00:54,489 INFO L225 Difference]: With dead ends: 128 [2020-09-16 23:00:54,489 INFO L226 Difference]: Without dead ends: 68 [2020-09-16 23:00:54,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:00:54,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-16 23:00:54,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-16 23:00:54,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-16 23:00:54,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-09-16 23:00:54,494 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 13 [2020-09-16 23:00:54,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:00:54,495 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-09-16 23:00:54,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:00:54,495 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-09-16 23:00:54,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-16 23:00:54,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:00:54,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:00:54,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-16 23:00:54,496 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:00:54,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:00:54,497 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 3 times [2020-09-16 23:00:54,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:00:54,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523481280] [2020-09-16 23:00:54,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:00:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:00:54,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:00:54,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523481280] [2020-09-16 23:00:54,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:00:54,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:00:54,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991855672] [2020-09-16 23:00:54,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:00:54,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:00:54,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:00:54,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:00:54,588 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-09-16 23:00:54,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:00:54,621 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-09-16 23:00:54,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 23:00:54,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-16 23:00:54,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:00:54,622 INFO L225 Difference]: With dead ends: 81 [2020-09-16 23:00:54,622 INFO L226 Difference]: Without dead ends: 59 [2020-09-16 23:00:54,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:00:54,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-16 23:00:54,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-09-16 23:00:54,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-16 23:00:54,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-09-16 23:00:54,627 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-09-16 23:00:54,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:00:54,628 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-09-16 23:00:54,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:00:54,628 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-09-16 23:00:54,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-16 23:00:54,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:00:54,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:00:54,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-16 23:00:54,630 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:00:54,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:00:54,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 1 times [2020-09-16 23:00:54,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:00:54,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995379647] [2020-09-16 23:00:54,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:00:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:00:54,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:00:54,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995379647] [2020-09-16 23:00:54,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:00:54,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 23:00:54,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888599623] [2020-09-16 23:00:54,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 23:00:54,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:00:54,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 23:00:54,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:00:54,706 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-09-16 23:00:54,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:00:54,746 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-09-16 23:00:54,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 23:00:54,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-16 23:00:54,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:00:54,747 INFO L225 Difference]: With dead ends: 60 [2020-09-16 23:00:54,747 INFO L226 Difference]: Without dead ends: 45 [2020-09-16 23:00:54,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-16 23:00:54,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-16 23:00:54,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-16 23:00:54,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-16 23:00:54,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-09-16 23:00:54,751 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-09-16 23:00:54,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:00:54,751 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-09-16 23:00:54,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 23:00:54,751 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-09-16 23:00:54,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-16 23:00:54,752 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:00:54,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:00:54,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-16 23:00:54,753 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:00:54,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:00:54,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-09-16 23:00:54,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:00:54,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448225127] [2020-09-16 23:00:54,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:00:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:00:54,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:00:54,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448225127] [2020-09-16 23:00:54,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:00:54,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 23:00:54,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265389715] [2020-09-16 23:00:54,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 23:00:54,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:00:54,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 23:00:54,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-16 23:00:54,834 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-09-16 23:00:54,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:00:54,886 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-09-16 23:00:54,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 23:00:54,887 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-16 23:00:54,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:00:54,887 INFO L225 Difference]: With dead ends: 42 [2020-09-16 23:00:54,888 INFO L226 Difference]: Without dead ends: 36 [2020-09-16 23:00:54,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-16 23:00:54,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-16 23:00:54,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-16 23:00:54,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-16 23:00:54,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-09-16 23:00:54,891 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-09-16 23:00:54,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:00:54,891 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-09-16 23:00:54,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 23:00:54,891 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-09-16 23:00:54,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-16 23:00:54,892 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:00:54,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:00:54,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-16 23:00:54,893 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:00:54,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:00:54,893 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-09-16 23:00:54,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:00:54,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230849688] [2020-09-16 23:00:54,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:00:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:00:54,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:00:54,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230849688] [2020-09-16 23:00:54,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:00:54,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:00:54,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105081868] [2020-09-16 23:00:54,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 23:00:54,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:00:54,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 23:00:54,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:00:54,939 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-09-16 23:00:54,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:00:54,944 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-09-16 23:00:54,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 23:00:54,944 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-16 23:00:54,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:00:54,945 INFO L225 Difference]: With dead ends: 35 [2020-09-16 23:00:54,945 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 23:00:54,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:00:54,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 23:00:54,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 23:00:54,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 23:00:54,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 23:00:54,946 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-16 23:00:54,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:00:54,947 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 23:00:54,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 23:00:54,947 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 23:00:54,947 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 23:00:54,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-16 23:00:54,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:00:54 BasicIcfg [2020-09-16 23:00:54,953 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 23:00:54,955 INFO L168 Benchmark]: Toolchain (without parser) took 5179.64 ms. Allocated memory was 147.8 MB in the beginning and 244.8 MB in the end (delta: 97.0 MB). Free memory was 102.7 MB in the beginning and 124.8 MB in the end (delta: -22.1 MB). Peak memory consumption was 74.9 MB. Max. memory is 7.1 GB. [2020-09-16 23:00:54,956 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-16 23:00:54,957 INFO L168 Benchmark]: CACSL2BoogieTranslator took 875.26 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 102.1 MB in the beginning and 162.3 MB in the end (delta: -60.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-09-16 23:00:54,958 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.97 ms. Allocated memory is still 205.0 MB. Free memory was 162.3 MB in the beginning and 160.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-16 23:00:54,959 INFO L168 Benchmark]: Boogie Preprocessor took 31.89 ms. Allocated memory is still 205.0 MB. Free memory was 160.4 MB in the beginning and 159.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-16 23:00:54,960 INFO L168 Benchmark]: RCFGBuilder took 506.61 ms. Allocated memory is still 205.0 MB. Free memory was 159.1 MB in the beginning and 137.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-09-16 23:00:54,960 INFO L168 Benchmark]: TraceAbstraction took 3692.27 ms. Allocated memory was 205.0 MB in the beginning and 244.8 MB in the end (delta: 39.8 MB). Free memory was 136.5 MB in the beginning and 124.8 MB in the end (delta: 11.7 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. [2020-09-16 23:00:54,965 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 875.26 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 102.1 MB in the beginning and 162.3 MB in the end (delta: -60.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 64.97 ms. Allocated memory is still 205.0 MB. Free memory was 162.3 MB in the beginning and 160.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.89 ms. Allocated memory is still 205.0 MB. Free memory was 160.4 MB in the beginning and 159.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 506.61 ms. Allocated memory is still 205.0 MB. Free memory was 159.1 MB in the beginning and 137.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3692.27 ms. Allocated memory was 205.0 MB in the beginning and 244.8 MB in the end (delta: 39.8 MB). Free memory was 136.5 MB in the beginning and 124.8 MB in the end (delta: 11.7 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 673 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2483 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 179 SDtfs, 126 SDslu, 183 SDs, 0 SdLazy, 121 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 4013 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...