/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/safe019_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-14 22:59:25,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-14 22:59:25,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-14 22:59:25,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-14 22:59:25,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-14 22:59:25,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-14 22:59:25,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-14 22:59:25,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-14 22:59:25,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-14 22:59:25,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-14 22:59:25,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-14 22:59:25,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-14 22:59:25,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-14 22:59:25,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-14 22:59:25,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-14 22:59:25,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-14 22:59:25,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-14 22:59:25,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-14 22:59:25,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-14 22:59:25,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-14 22:59:25,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-14 22:59:25,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-14 22:59:25,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-14 22:59:25,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-14 22:59:25,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-14 22:59:25,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-14 22:59:25,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-14 22:59:25,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-14 22:59:25,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-14 22:59:25,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-14 22:59:25,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-14 22:59:25,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-14 22:59:25,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-14 22:59:25,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-14 22:59:25,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-14 22:59:25,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-14 22:59:25,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-14 22:59:25,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-14 22:59:25,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-14 22:59:25,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-14 22:59:25,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-14 22:59:25,316 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 [2020-09-14 22:59:25,367 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-14 22:59:25,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-14 22:59:25,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-14 22:59:25,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-14 22:59:25,371 INFO L138 SettingsManager]: * Use SBE=true [2020-09-14 22:59:25,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-14 22:59:25,371 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-14 22:59:25,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-14 22:59:25,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-14 22:59:25,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-14 22:59:25,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-14 22:59:25,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-14 22:59:25,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-14 22:59:25,375 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-14 22:59:25,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-14 22:59:25,375 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-14 22:59:25,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-14 22:59:25,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-14 22:59:25,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-14 22:59:25,376 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-14 22:59:25,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-14 22:59:25,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 22:59:25,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-14 22:59:25,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-14 22:59:25,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-14 22:59:25,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-14 22:59:25,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-14 22:59:25,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-14 22:59:25,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-14 22:59:25,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-14 22:59:25,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-14 22:59:25,825 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-14 22:59:25,829 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-14 22:59:25,831 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-14 22:59:25,831 INFO L275 PluginConnector]: CDTParser initialized [2020-09-14 22:59:25,832 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_tso.oepc.i [2020-09-14 22:59:25,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a1c3a8c4/3b722ee63b0e4e5bbecaecaa1fa61f4b/FLAGa4bbff2da [2020-09-14 22:59:26,499 INFO L306 CDTParser]: Found 1 translation units. [2020-09-14 22:59:26,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe019_tso.oepc.i [2020-09-14 22:59:26,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a1c3a8c4/3b722ee63b0e4e5bbecaecaa1fa61f4b/FLAGa4bbff2da [2020-09-14 22:59:26,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a1c3a8c4/3b722ee63b0e4e5bbecaecaa1fa61f4b [2020-09-14 22:59:26,799 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-14 22:59:26,803 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-14 22:59:26,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-14 22:59:26,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-14 22:59:26,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-14 22:59:26,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 10:59:26" (1/1) ... [2020-09-14 22:59:26,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@799474bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:26, skipping insertion in model container [2020-09-14 22:59:26,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 10:59:26" (1/1) ... [2020-09-14 22:59:26,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-14 22:59:26,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-14 22:59:27,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 22:59:27,433 INFO L203 MainTranslator]: Completed pre-run [2020-09-14 22:59:27,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 22:59:27,585 INFO L208 MainTranslator]: Completed translation [2020-09-14 22:59:27,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:27 WrapperNode [2020-09-14 22:59:27,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-14 22:59:27,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-14 22:59:27,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-14 22:59:27,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-14 22:59:27,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:27" (1/1) ... [2020-09-14 22:59:27,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:27" (1/1) ... [2020-09-14 22:59:27,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-14 22:59:27,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-14 22:59:27,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-14 22:59:27,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-14 22:59:27,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:27" (1/1) ... [2020-09-14 22:59:27,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:27" (1/1) ... [2020-09-14 22:59:27,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:27" (1/1) ... [2020-09-14 22:59:27,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:27" (1/1) ... [2020-09-14 22:59:27,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:27" (1/1) ... [2020-09-14 22:59:27,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:27" (1/1) ... [2020-09-14 22:59:27,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:27" (1/1) ... [2020-09-14 22:59:27,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-14 22:59:27,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-14 22:59:27,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-14 22:59:27,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-14 22:59:27,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:27" (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 [2020-09-14 22:59:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-14 22:59:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-14 22:59:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-14 22:59:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-14 22:59:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-14 22:59:27,778 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-14 22:59:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-14 22:59:27,778 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-14 22:59:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-14 22:59:27,778 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-14 22:59:27,779 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-09-14 22:59:27,779 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-09-14 22:59:27,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-14 22:59:27,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-14 22:59:27,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-14 22:59:27,782 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-14 22:59:28,225 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-14 22:59:28,225 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-14 22:59:28,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 10:59:28 BoogieIcfgContainer [2020-09-14 22:59:28,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-14 22:59:28,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-14 22:59:28,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-14 22:59:28,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-14 22:59:28,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 10:59:26" (1/3) ... [2020-09-14 22:59:28,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d1bfdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 10:59:28, skipping insertion in model container [2020-09-14 22:59:28,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:27" (2/3) ... [2020-09-14 22:59:28,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d1bfdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 10:59:28, skipping insertion in model container [2020-09-14 22:59:28,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 10:59:28" (3/3) ... [2020-09-14 22:59:28,242 INFO L109 eAbstractionObserver]: Analyzing ICFG safe019_tso.oepc.i [2020-09-14 22:59:28,255 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-14 22:59:28,255 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-14 22:59:28,266 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-14 22:59:28,268 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-14 22:59:28,302 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,302 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,302 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,303 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,303 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,303 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,304 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,304 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,304 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,305 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,305 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,305 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,306 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,306 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,306 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,306 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,307 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,307 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,308 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,308 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,308 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,308 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,309 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,309 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,314 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,314 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,315 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,315 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,325 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,325 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,325 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,326 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,328 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,328 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,328 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,329 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,331 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,331 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,332 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,332 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:28,359 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-14 22:59:28,388 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 22:59:28,388 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 22:59:28,388 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 22:59:28,388 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 22:59:28,388 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 22:59:28,389 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 22:59:28,389 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 22:59:28,389 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 22:59:28,409 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 81 transitions, 182 flow [2020-09-14 22:59:28,412 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-09-14 22:59:28,468 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-09-14 22:59:28,468 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 22:59:28,475 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-09-14 22:59:28,479 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-09-14 22:59:28,505 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-09-14 22:59:28,505 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 22:59:28,506 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-09-14 22:59:28,516 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-09-14 22:59:28,517 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 22:59:30,340 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-09-14 22:59:30,615 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3093 [2020-09-14 22:59:30,615 INFO L214 etLargeBlockEncoding]: Total number of compositions: 65 [2020-09-14 22:59:30,621 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-09-14 22:59:30,672 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-09-14 22:59:30,675 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-09-14 22:59:30,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-14 22:59:30,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:59:30,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:59:30,694 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:59:30,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:59:30,704 INFO L82 PathProgramCache]: Analyzing trace with hash -2005095105, now seen corresponding path program 1 times [2020-09-14 22:59:30,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:59:30,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128061568] [2020-09-14 22:59:30,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:59:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:59:31,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:59:31,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128061568] [2020-09-14 22:59:31,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:59:31,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 22:59:31,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523541357] [2020-09-14 22:59:31,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 22:59:31,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:59:31,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 22:59:31,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:59:31,034 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-09-14 22:59:31,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:59:31,103 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-09-14 22:59:31,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 22:59:31,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-14 22:59:31,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:59:31,132 INFO L225 Difference]: With dead ends: 670 [2020-09-14 22:59:31,132 INFO L226 Difference]: Without dead ends: 526 [2020-09-14 22:59:31,134 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 [2020-09-14 22:59:31,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-09-14 22:59:31,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-09-14 22:59:31,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-09-14 22:59:31,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-09-14 22:59:31,235 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-09-14 22:59:31,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:59:31,237 INFO L479 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-09-14 22:59:31,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 22:59:31,237 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-09-14 22:59:31,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-14 22:59:31,239 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:59:31,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:59:31,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-14 22:59:31,240 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:59:31,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:59:31,240 INFO L82 PathProgramCache]: Analyzing trace with hash -2027599793, now seen corresponding path program 1 times [2020-09-14 22:59:31,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:59:31,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689297880] [2020-09-14 22:59:31,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:59:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:59:31,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:59:31,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689297880] [2020-09-14 22:59:31,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:59:31,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:59:31,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134213600] [2020-09-14 22:59:31,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:59:31,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:59:31,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:59:31,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:59:31,370 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-09-14 22:59:31,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:59:31,409 INFO L93 Difference]: Finished difference Result 682 states and 2180 transitions. [2020-09-14 22:59:31,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 22:59:31,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-14 22:59:31,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:59:31,415 INFO L225 Difference]: With dead ends: 682 [2020-09-14 22:59:31,415 INFO L226 Difference]: Without dead ends: 394 [2020-09-14 22:59:31,416 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 [2020-09-14 22:59:31,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-09-14 22:59:31,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-09-14 22:59:31,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-09-14 22:59:31,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1224 transitions. [2020-09-14 22:59:31,435 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1224 transitions. Word has length 11 [2020-09-14 22:59:31,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:59:31,435 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 1224 transitions. [2020-09-14 22:59:31,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:59:31,435 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1224 transitions. [2020-09-14 22:59:31,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-14 22:59:31,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:59:31,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:59:31,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-14 22:59:31,438 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:59:31,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:59:31,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1004375926, now seen corresponding path program 1 times [2020-09-14 22:59:31,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:59:31,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414817648] [2020-09-14 22:59:31,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:59:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:59:31,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:59:31,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414817648] [2020-09-14 22:59:31,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:59:31,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 22:59:31,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730452540] [2020-09-14 22:59:31,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 22:59:31,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:59:31,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 22:59:31,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:59:31,564 INFO L87 Difference]: Start difference. First operand 394 states and 1224 transitions. Second operand 3 states. [2020-09-14 22:59:31,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:59:31,581 INFO L93 Difference]: Finished difference Result 386 states and 1190 transitions. [2020-09-14 22:59:31,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 22:59:31,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-14 22:59:31,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:59:31,585 INFO L225 Difference]: With dead ends: 386 [2020-09-14 22:59:31,586 INFO L226 Difference]: Without dead ends: 386 [2020-09-14 22:59:31,586 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 [2020-09-14 22:59:31,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-09-14 22:59:31,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2020-09-14 22:59:31,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-09-14 22:59:31,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1190 transitions. [2020-09-14 22:59:31,600 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1190 transitions. Word has length 12 [2020-09-14 22:59:31,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:59:31,600 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 1190 transitions. [2020-09-14 22:59:31,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 22:59:31,600 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1190 transitions. [2020-09-14 22:59:31,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-14 22:59:31,602 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:59:31,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:59:31,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-14 22:59:31,603 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:59:31,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:59:31,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1071238165, now seen corresponding path program 1 times [2020-09-14 22:59:31,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:59:31,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035909575] [2020-09-14 22:59:31,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:59:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:59:31,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:59:31,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035909575] [2020-09-14 22:59:31,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:59:31,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:59:31,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751880393] [2020-09-14 22:59:31,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 22:59:31,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:59:31,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 22:59:31,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:59:31,655 INFO L87 Difference]: Start difference. First operand 386 states and 1190 transitions. Second operand 3 states. [2020-09-14 22:59:31,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:59:31,673 INFO L93 Difference]: Finished difference Result 466 states and 1378 transitions. [2020-09-14 22:59:31,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 22:59:31,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-09-14 22:59:31,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:59:31,676 INFO L225 Difference]: With dead ends: 466 [2020-09-14 22:59:31,676 INFO L226 Difference]: Without dead ends: 402 [2020-09-14 22:59:31,677 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 [2020-09-14 22:59:31,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-09-14 22:59:31,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 370. [2020-09-14 22:59:31,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-09-14 22:59:31,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1098 transitions. [2020-09-14 22:59:31,689 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1098 transitions. Word has length 13 [2020-09-14 22:59:31,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:59:31,690 INFO L479 AbstractCegarLoop]: Abstraction has 370 states and 1098 transitions. [2020-09-14 22:59:31,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 22:59:31,690 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1098 transitions. [2020-09-14 22:59:31,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-14 22:59:31,691 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:59:31,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:59:31,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-14 22:59:31,692 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:59:31,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:59:31,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1070883463, now seen corresponding path program 1 times [2020-09-14 22:59:31,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:59:31,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391351164] [2020-09-14 22:59:31,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:59:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:59:31,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:59:31,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391351164] [2020-09-14 22:59:31,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:59:31,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 22:59:31,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299842888] [2020-09-14 22:59:31,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 22:59:31,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:59:31,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 22:59:31,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:59:31,745 INFO L87 Difference]: Start difference. First operand 370 states and 1098 transitions. Second operand 3 states. [2020-09-14 22:59:31,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:59:31,762 INFO L93 Difference]: Finished difference Result 358 states and 1054 transitions. [2020-09-14 22:59:31,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 22:59:31,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-09-14 22:59:31,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:59:31,765 INFO L225 Difference]: With dead ends: 358 [2020-09-14 22:59:31,766 INFO L226 Difference]: Without dead ends: 358 [2020-09-14 22:59:31,766 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 [2020-09-14 22:59:31,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-09-14 22:59:31,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-09-14 22:59:31,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-09-14 22:59:31,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1054 transitions. [2020-09-14 22:59:31,780 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1054 transitions. Word has length 13 [2020-09-14 22:59:31,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:59:31,780 INFO L479 AbstractCegarLoop]: Abstraction has 358 states and 1054 transitions. [2020-09-14 22:59:31,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 22:59:31,781 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1054 transitions. [2020-09-14 22:59:31,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-14 22:59:31,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:59:31,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:59:31,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-14 22:59:31,784 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:59:31,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:59:31,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1189218785, now seen corresponding path program 1 times [2020-09-14 22:59:31,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:59:31,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320248355] [2020-09-14 22:59:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:59:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:59:31,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:59:31,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320248355] [2020-09-14 22:59:31,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:59:31,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:59:31,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615239682] [2020-09-14 22:59:31,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:59:31,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:59:31,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:59:31,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:59:31,869 INFO L87 Difference]: Start difference. First operand 358 states and 1054 transitions. Second operand 4 states. [2020-09-14 22:59:31,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:59:31,892 INFO L93 Difference]: Finished difference Result 514 states and 1482 transitions. [2020-09-14 22:59:31,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 22:59:31,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-14 22:59:31,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:59:31,895 INFO L225 Difference]: With dead ends: 514 [2020-09-14 22:59:31,895 INFO L226 Difference]: Without dead ends: 274 [2020-09-14 22:59:31,896 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 [2020-09-14 22:59:31,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-09-14 22:59:31,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-09-14 22:59:31,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-09-14 22:59:31,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 775 transitions. [2020-09-14 22:59:31,905 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 775 transitions. Word has length 14 [2020-09-14 22:59:31,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:59:31,905 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 775 transitions. [2020-09-14 22:59:31,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:59:31,905 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 775 transitions. [2020-09-14 22:59:31,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-14 22:59:31,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:59:31,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:59:31,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-14 22:59:31,907 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:59:31,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:59:31,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1162350155, now seen corresponding path program 2 times [2020-09-14 22:59:31,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:59:31,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847854181] [2020-09-14 22:59:31,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:59:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:59:32,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:59:32,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847854181] [2020-09-14 22:59:32,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:59:32,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:59:32,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269203782] [2020-09-14 22:59:32,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:59:32,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:59:32,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:59:32,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:59:32,017 INFO L87 Difference]: Start difference. First operand 274 states and 775 transitions. Second operand 4 states. [2020-09-14 22:59:32,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:59:32,073 INFO L93 Difference]: Finished difference Result 345 states and 911 transitions. [2020-09-14 22:59:32,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:59:32,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-14 22:59:32,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:59:32,075 INFO L225 Difference]: With dead ends: 345 [2020-09-14 22:59:32,075 INFO L226 Difference]: Without dead ends: 252 [2020-09-14 22:59:32,076 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 [2020-09-14 22:59:32,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-09-14 22:59:32,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2020-09-14 22:59:32,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-09-14 22:59:32,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 675 transitions. [2020-09-14 22:59:32,085 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 675 transitions. Word has length 14 [2020-09-14 22:59:32,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:59:32,085 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 675 transitions. [2020-09-14 22:59:32,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:59:32,086 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 675 transitions. [2020-09-14 22:59:32,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-14 22:59:32,087 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:59:32,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:59:32,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-14 22:59:32,087 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:59:32,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:59:32,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1647463604, now seen corresponding path program 1 times [2020-09-14 22:59:32,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:59:32,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729917400] [2020-09-14 22:59:32,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:59:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:59:32,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:59:32,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729917400] [2020-09-14 22:59:32,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:59:32,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:59:32,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803853960] [2020-09-14 22:59:32,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 22:59:32,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:59:32,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 22:59:32,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:59:32,233 INFO L87 Difference]: Start difference. First operand 252 states and 675 transitions. Second operand 5 states. [2020-09-14 22:59:32,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:59:32,293 INFO L93 Difference]: Finished difference Result 278 states and 685 transitions. [2020-09-14 22:59:32,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 22:59:32,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-14 22:59:32,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:59:32,299 INFO L225 Difference]: With dead ends: 278 [2020-09-14 22:59:32,299 INFO L226 Difference]: Without dead ends: 203 [2020-09-14 22:59:32,300 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 [2020-09-14 22:59:32,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-09-14 22:59:32,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-09-14 22:59:32,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-09-14 22:59:32,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 492 transitions. [2020-09-14 22:59:32,308 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 492 transitions. Word has length 15 [2020-09-14 22:59:32,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:59:32,308 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 492 transitions. [2020-09-14 22:59:32,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 22:59:32,308 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 492 transitions. [2020-09-14 22:59:32,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-14 22:59:32,309 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:59:32,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:59:32,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-14 22:59:32,310 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:59:32,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:59:32,310 INFO L82 PathProgramCache]: Analyzing trace with hash -469082430, now seen corresponding path program 1 times [2020-09-14 22:59:32,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:59:32,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58463373] [2020-09-14 22:59:32,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:59:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:59:32,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:59:32,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58463373] [2020-09-14 22:59:32,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:59:32,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 22:59:32,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407041934] [2020-09-14 22:59:32,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 22:59:32,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:59:32,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 22:59:32,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-14 22:59:32,438 INFO L87 Difference]: Start difference. First operand 203 states and 492 transitions. Second operand 6 states. [2020-09-14 22:59:32,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:59:32,516 INFO L93 Difference]: Finished difference Result 200 states and 461 transitions. [2020-09-14 22:59:32,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-14 22:59:32,517 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-09-14 22:59:32,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:59:32,518 INFO L225 Difference]: With dead ends: 200 [2020-09-14 22:59:32,518 INFO L226 Difference]: Without dead ends: 162 [2020-09-14 22:59:32,519 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 [2020-09-14 22:59:32,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-14 22:59:32,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-09-14 22:59:32,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-14 22:59:32,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 375 transitions. [2020-09-14 22:59:32,529 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 375 transitions. Word has length 16 [2020-09-14 22:59:32,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:59:32,529 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 375 transitions. [2020-09-14 22:59:32,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 22:59:32,530 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 375 transitions. [2020-09-14 22:59:32,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-14 22:59:32,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:59:32,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:59:32,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-14 22:59:32,531 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:59:32,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:59:32,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1305224855, now seen corresponding path program 1 times [2020-09-14 22:59:32,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:59:32,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943743427] [2020-09-14 22:59:32,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:59:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:59:32,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:59:32,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943743427] [2020-09-14 22:59:32,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:59:32,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:59:32,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094019572] [2020-09-14 22:59:32,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:59:32,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:59:32,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:59:32,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:59:32,590 INFO L87 Difference]: Start difference. First operand 162 states and 375 transitions. Second operand 4 states. [2020-09-14 22:59:32,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:59:32,608 INFO L93 Difference]: Finished difference Result 194 states and 439 transitions. [2020-09-14 22:59:32,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:59:32,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-09-14 22:59:32,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:59:32,610 INFO L225 Difference]: With dead ends: 194 [2020-09-14 22:59:32,610 INFO L226 Difference]: Without dead ends: 127 [2020-09-14 22:59:32,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:59:32,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-09-14 22:59:32,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-09-14 22:59:32,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-14 22:59:32,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-09-14 22:59:32,615 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2020-09-14 22:59:32,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:59:32,617 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-09-14 22:59:32,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:59:32,617 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-09-14 22:59:32,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-14 22:59:32,618 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:59:32,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:59:32,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-14 22:59:32,618 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:59:32,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:59:32,619 INFO L82 PathProgramCache]: Analyzing trace with hash 483879941, now seen corresponding path program 2 times [2020-09-14 22:59:32,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:59:32,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711742464] [2020-09-14 22:59:32,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:59:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:59:32,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:59:32,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711742464] [2020-09-14 22:59:32,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:59:32,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-14 22:59:32,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108220623] [2020-09-14 22:59:32,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-14 22:59:32,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:59:32,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-14 22:59:32,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-14 22:59:32,735 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 7 states. [2020-09-14 22:59:32,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:59:32,806 INFO L93 Difference]: Finished difference Result 120 states and 253 transitions. [2020-09-14 22:59:32,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-14 22:59:32,807 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-09-14 22:59:32,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:59:32,808 INFO L225 Difference]: With dead ends: 120 [2020-09-14 22:59:32,808 INFO L226 Difference]: Without dead ends: 71 [2020-09-14 22:59:32,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-14 22:59:32,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-14 22:59:32,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-09-14 22:59:32,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-14 22:59:32,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2020-09-14 22:59:32,812 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 18 [2020-09-14 22:59:32,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:59:32,812 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2020-09-14 22:59:32,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-14 22:59:32,812 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2020-09-14 22:59:32,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-14 22:59:32,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:59:32,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:59:32,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-14 22:59:32,813 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:59:32,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:59:32,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1087350585, now seen corresponding path program 1 times [2020-09-14 22:59:32,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:59:32,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145615624] [2020-09-14 22:59:32,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:59:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:59:32,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:59:32,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145615624] [2020-09-14 22:59:32,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:59:32,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:59:32,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887641811] [2020-09-14 22:59:32,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:59:32,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:59:32,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:59:32,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:59:32,912 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand 4 states. [2020-09-14 22:59:32,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:59:32,928 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2020-09-14 22:59:32,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 22:59:32,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-09-14 22:59:32,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:59:32,929 INFO L225 Difference]: With dead ends: 70 [2020-09-14 22:59:32,929 INFO L226 Difference]: Without dead ends: 0 [2020-09-14 22:59:32,930 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 [2020-09-14 22:59:32,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-14 22:59:32,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-14 22:59:32,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-14 22:59:32,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-14 22:59:32,931 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-09-14 22:59:32,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:59:32,931 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-14 22:59:32,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:59:32,931 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-14 22:59:32,931 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-14 22:59:32,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-14 22:59:32,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 10:59:32 BasicIcfg [2020-09-14 22:59:32,937 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-14 22:59:32,944 INFO L168 Benchmark]: Toolchain (without parser) took 6138.57 ms. Allocated memory was 141.0 MB in the beginning and 280.5 MB in the end (delta: 139.5 MB). Free memory was 102.0 MB in the beginning and 128.0 MB in the end (delta: -26.0 MB). Peak memory consumption was 113.5 MB. Max. memory is 7.1 GB. [2020-09-14 22:59:32,945 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-14 22:59:32,946 INFO L168 Benchmark]: CACSL2BoogieTranslator took 781.70 ms. Allocated memory was 141.0 MB in the beginning and 206.0 MB in the end (delta: 65.0 MB). Free memory was 101.4 MB in the beginning and 163.4 MB in the end (delta: -62.0 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-09-14 22:59:32,948 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.16 ms. Allocated memory is still 206.0 MB. Free memory was 163.4 MB in the beginning and 161.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-14 22:59:32,948 INFO L168 Benchmark]: Boogie Preprocessor took 34.73 ms. Allocated memory is still 206.0 MB. Free memory was 161.4 MB in the beginning and 159.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-14 22:59:32,956 INFO L168 Benchmark]: RCFGBuilder took 544.32 ms. Allocated memory is still 206.0 MB. Free memory was 159.4 MB in the beginning and 135.5 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-09-14 22:59:32,958 INFO L168 Benchmark]: TraceAbstraction took 4703.87 ms. Allocated memory was 206.0 MB in the beginning and 280.5 MB in the end (delta: 74.4 MB). Free memory was 135.5 MB in the beginning and 128.0 MB in the end (delta: 7.5 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. [2020-09-14 22:59:32,967 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 781.70 ms. Allocated memory was 141.0 MB in the beginning and 206.0 MB in the end (delta: 65.0 MB). Free memory was 101.4 MB in the beginning and 163.4 MB in the end (delta: -62.0 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 65.16 ms. Allocated memory is still 206.0 MB. Free memory was 163.4 MB in the beginning and 161.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.73 ms. Allocated memory is still 206.0 MB. Free memory was 161.4 MB in the beginning and 159.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 544.32 ms. Allocated memory is still 206.0 MB. Free memory was 159.4 MB in the beginning and 135.5 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4703.87 ms. Allocated memory was 206.0 MB in the beginning and 280.5 MB in the end (delta: 74.4 MB). Free memory was 135.5 MB in the beginning and 128.0 MB in the end (delta: 7.5 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.2s, 92 ProgramPointsBefore, 38 ProgramPointsAfterwards, 81 TransitionsBefore, 25 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 951 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 25 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 3093 CheckedPairsTotal, 65 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 5 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 258 SDtfs, 237 SDslu, 349 SDs, 0 SdLazy, 196 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred 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, 12 MinimizatonAttempts, 34 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 6586 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...