/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 02:23:36,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 02:23:36,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 02:23:36,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 02:23:36,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 02:23:36,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 02:23:36,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 02:23:36,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 02:23:36,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 02:23:36,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 02:23:36,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 02:23:36,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 02:23:36,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 02:23:36,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 02:23:36,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 02:23:36,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 02:23:36,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 02:23:36,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 02:23:36,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 02:23:36,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 02:23:36,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 02:23:36,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 02:23:36,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 02:23:36,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 02:23:36,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-18 02:23:36,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 02:23:36,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 02:23:36,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 02:23:36,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 02:23:36,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 02:23:36,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 02:23:36,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 02:23:36,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 02:23:36,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 02:23:36,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 02:23:36,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 02:23:36,299 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-18 02:23:36,341 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 02:23:36,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 02:23:36,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 02:23:36,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 02:23:36,344 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 02:23:36,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 02:23:36,345 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 02:23:36,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 02:23:36,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 02:23:36,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 02:23:36,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 02:23:36,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 02:23:36,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 02:23:36,348 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 02:23:36,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 02:23:36,349 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 02:23:36,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 02:23:36,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 02:23:36,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 02:23:36,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 02:23:36,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 02:23:36,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 02:23:36,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 02:23:36,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 02:23:36,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 02:23:36,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 02:23:36,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 02:23:36,352 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 02:23:36,352 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 02:23:36,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 02:23:36,352 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 02:23:36,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 02:23:36,794 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 02:23:36,799 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 02:23:36,801 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 02:23:36,801 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 02:23:36,802 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_rmo.oepc.i [2020-09-18 02:23:36,869 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99011fc83/42ad6975723d49529d4ad39ad15151d9/FLAG3190a5738 [2020-09-18 02:23:37,481 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 02:23:37,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_rmo.oepc.i [2020-09-18 02:23:37,497 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99011fc83/42ad6975723d49529d4ad39ad15151d9/FLAG3190a5738 [2020-09-18 02:23:37,772 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99011fc83/42ad6975723d49529d4ad39ad15151d9 [2020-09-18 02:23:37,783 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 02:23:37,788 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 02:23:37,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 02:23:37,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 02:23:37,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 02:23:37,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 02:23:37" (1/1) ... [2020-09-18 02:23:37,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cffb942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:37, skipping insertion in model container [2020-09-18 02:23:37,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 02:23:37" (1/1) ... [2020-09-18 02:23:37,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 02:23:37,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 02:23:38,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 02:23:38,475 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 02:23:38,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 02:23:38,623 INFO L208 MainTranslator]: Completed translation [2020-09-18 02:23:38,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:38 WrapperNode [2020-09-18 02:23:38,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 02:23:38,625 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 02:23:38,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 02:23:38,625 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 02:23:38,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:38" (1/1) ... [2020-09-18 02:23:38,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:38" (1/1) ... [2020-09-18 02:23:38,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 02:23:38,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 02:23:38,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 02:23:38,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 02:23:38,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:38" (1/1) ... [2020-09-18 02:23:38,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:38" (1/1) ... [2020-09-18 02:23:38,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:38" (1/1) ... [2020-09-18 02:23:38,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:38" (1/1) ... [2020-09-18 02:23:38,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:38" (1/1) ... [2020-09-18 02:23:38,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:38" (1/1) ... [2020-09-18 02:23:38,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:38" (1/1) ... [2020-09-18 02:23:38,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 02:23:38,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 02:23:38,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 02:23:38,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 02:23:38,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 02:23:38,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 02:23:38,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-18 02:23:38,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 02:23:38,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 02:23:38,797 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-18 02:23:38,797 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-18 02:23:38,797 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-18 02:23:38,797 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-18 02:23:38,797 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-18 02:23:38,798 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-18 02:23:38,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-18 02:23:38,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 02:23:38,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 02:23:38,804 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-18 02:23:39,170 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 02:23:39,170 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-18 02:23:39,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 02:23:39 BoogieIcfgContainer [2020-09-18 02:23:39,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 02:23:39,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 02:23:39,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 02:23:39,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 02:23:39,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 02:23:37" (1/3) ... [2020-09-18 02:23:39,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa6a34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 02:23:39, skipping insertion in model container [2020-09-18 02:23:39,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:38" (2/3) ... [2020-09-18 02:23:39,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa6a34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 02:23:39, skipping insertion in model container [2020-09-18 02:23:39,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 02:23:39" (3/3) ... [2020-09-18 02:23:39,185 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_rmo.oepc.i [2020-09-18 02:23:39,196 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 02:23:39,197 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 02:23:39,205 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 02:23:39,206 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 02:23:39,237 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,238 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,238 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,238 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,239 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,239 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,240 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,240 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,240 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,240 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,241 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,241 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,241 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,242 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,242 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,242 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,243 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,243 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,247 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,248 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,248 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,248 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,256 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,256 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,256 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,257 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,263 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,264 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,264 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,264 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:39,293 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-18 02:23:39,315 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 02:23:39,315 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 02:23:39,315 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 02:23:39,315 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 02:23:39,316 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 02:23:39,316 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 02:23:39,316 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 02:23:39,316 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 02:23:39,333 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-18 02:23:39,335 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-18 02:23:39,388 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-18 02:23:39,389 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 02:23:39,394 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-18 02:23:39,397 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-18 02:23:39,418 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-18 02:23:39,418 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 02:23:39,419 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-18 02:23:39,421 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-18 02:23:39,422 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 02:23:40,701 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-18 02:23:40,924 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2414 [2020-09-18 02:23:40,924 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-09-18 02:23:40,929 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-09-18 02:23:40,956 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-18 02:23:40,959 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-18 02:23:40,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 02:23:40,968 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:40,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:40,970 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:40,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:40,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-09-18 02:23:40,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:40,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698364405] [2020-09-18 02:23:40,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:41,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:41,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698364405] [2020-09-18 02:23:41,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:41,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 02:23:41,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1705828200] [2020-09-18 02:23:41,243 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:41,247 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:41,264 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 02:23:41,264 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:41,266 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:23:41,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:23:41,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:41,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:23:41,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:23:41,289 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-18 02:23:41,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:41,332 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-09-18 02:23:41,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:23:41,335 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-18 02:23:41,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:41,353 INFO L225 Difference]: With dead ends: 294 [2020-09-18 02:23:41,353 INFO L226 Difference]: Without dead ends: 230 [2020-09-18 02:23:41,355 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 [2020-09-18 02:23:41,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-09-18 02:23:41,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-09-18 02:23:41,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-18 02:23:41,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-09-18 02:23:41,433 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-09-18 02:23:41,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:41,435 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-09-18 02:23:41,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:23:41,435 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-09-18 02:23:41,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-18 02:23:41,436 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:41,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:41,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 02:23:41,437 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:41,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:41,437 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 1 times [2020-09-18 02:23:41,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:41,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108139882] [2020-09-18 02:23:41,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:41,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:41,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108139882] [2020-09-18 02:23:41,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:41,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 02:23:41,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [276826193] [2020-09-18 02:23:41,576 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:41,576 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:41,579 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-18 02:23:41,579 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:41,629 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:23:41,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:23:41,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:41,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:23:41,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:23:41,631 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-09-18 02:23:41,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:41,640 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-09-18 02:23:41,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:23:41,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-18 02:23:41,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:41,643 INFO L225 Difference]: With dead ends: 202 [2020-09-18 02:23:41,643 INFO L226 Difference]: Without dead ends: 202 [2020-09-18 02:23:41,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:23:41,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-18 02:23:41,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-18 02:23:41,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-18 02:23:41,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-18 02:23:41,663 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-09-18 02:23:41,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:41,663 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-18 02:23:41,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:23:41,663 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-18 02:23:41,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-18 02:23:41,665 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:41,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:41,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 02:23:41,665 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:41,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:41,666 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-09-18 02:23:41,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:41,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692745179] [2020-09-18 02:23:41,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:41,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692745179] [2020-09-18 02:23:41,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:41,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:23:41,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [740609058] [2020-09-18 02:23:41,727 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:41,728 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:41,730 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-09-18 02:23:41,730 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:41,733 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:23:41,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:23:41,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:41,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:23:41,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:23:41,734 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-09-18 02:23:41,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:41,765 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-09-18 02:23:41,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:23:41,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-18 02:23:41,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:41,768 INFO L225 Difference]: With dead ends: 266 [2020-09-18 02:23:41,768 INFO L226 Difference]: Without dead ends: 140 [2020-09-18 02:23:41,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:23:41,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-18 02:23:41,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-09-18 02:23:41,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-18 02:23:41,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-09-18 02:23:41,780 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-09-18 02:23:41,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:41,780 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-09-18 02:23:41,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:23:41,781 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-09-18 02:23:41,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 02:23:41,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:41,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:41,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-18 02:23:41,782 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:41,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:41,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-09-18 02:23:41,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:41,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813291004] [2020-09-18 02:23:41,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:41,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:41,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813291004] [2020-09-18 02:23:41,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:41,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:23:41,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [550347622] [2020-09-18 02:23:41,877 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:41,878 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:41,880 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-09-18 02:23:41,881 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:41,887 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:23:41,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:23:41,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:41,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:23:41,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:23:41,888 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 4 states. [2020-09-18 02:23:41,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:41,932 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-09-18 02:23:41,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 02:23:41,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-18 02:23:41,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:41,934 INFO L225 Difference]: With dead ends: 165 [2020-09-18 02:23:41,934 INFO L226 Difference]: Without dead ends: 113 [2020-09-18 02:23:41,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:23:41,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-18 02:23:41,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-09-18 02:23:41,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-18 02:23:41,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-09-18 02:23:41,942 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-09-18 02:23:41,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:41,942 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-09-18 02:23:41,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:23:41,943 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-09-18 02:23:41,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-18 02:23:41,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:41,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:41,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-18 02:23:41,944 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:41,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:41,945 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-09-18 02:23:41,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:41,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377468342] [2020-09-18 02:23:41,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:42,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:42,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377468342] [2020-09-18 02:23:42,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:42,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:23:42,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1619213110] [2020-09-18 02:23:42,032 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:42,033 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:42,038 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-09-18 02:23:42,038 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:42,064 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2994#(<= ~__unbuffered_cnt~0 0)] [2020-09-18 02:23:42,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-18 02:23:42,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:42,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-18 02:23:42,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-18 02:23:42,065 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 6 states. [2020-09-18 02:23:42,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:42,129 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-09-18 02:23:42,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-18 02:23:42,129 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-09-18 02:23:42,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:42,130 INFO L225 Difference]: With dead ends: 111 [2020-09-18 02:23:42,130 INFO L226 Difference]: Without dead ends: 80 [2020-09-18 02:23:42,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-18 02:23:42,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-18 02:23:42,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-18 02:23:42,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-18 02:23:42,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-09-18 02:23:42,135 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-09-18 02:23:42,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:42,136 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-09-18 02:23:42,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-18 02:23:42,136 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-09-18 02:23:42,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-18 02:23:42,137 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:42,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:42,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-18 02:23:42,138 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:42,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:42,138 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-09-18 02:23:42,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:42,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230577039] [2020-09-18 02:23:42,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:42,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:42,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230577039] [2020-09-18 02:23:42,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:42,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-18 02:23:42,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1413956913] [2020-09-18 02:23:42,255 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:42,257 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:42,261 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-09-18 02:23:42,262 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:42,284 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3274#(<= ~__unbuffered_cnt~0 0)] [2020-09-18 02:23:42,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-18 02:23:42,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:42,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-18 02:23:42,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-18 02:23:42,286 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 7 states. [2020-09-18 02:23:42,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:42,354 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-09-18 02:23:42,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-18 02:23:42,355 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-09-18 02:23:42,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:42,356 INFO L225 Difference]: With dead ends: 75 [2020-09-18 02:23:42,356 INFO L226 Difference]: Without dead ends: 66 [2020-09-18 02:23:42,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-18 02:23:42,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-18 02:23:42,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-18 02:23:42,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-18 02:23:42,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-09-18 02:23:42,359 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-09-18 02:23:42,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:42,359 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-09-18 02:23:42,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-18 02:23:42,359 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-09-18 02:23:42,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 02:23:42,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:42,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:42,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-18 02:23:42,361 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:42,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:42,361 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-09-18 02:23:42,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:42,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902402579] [2020-09-18 02:23:42,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:42,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902402579] [2020-09-18 02:23:42,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:42,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:23:42,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [85758227] [2020-09-18 02:23:42,412 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:42,415 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:42,423 INFO L274 McrAutomatonBuilder]: Finished intersection with 40 states and 57 transitions. [2020-09-18 02:23:42,423 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:42,465 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:23:42,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:23:42,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:42,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:23:42,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:23:42,467 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 4 states. [2020-09-18 02:23:42,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:42,491 INFO L93 Difference]: Finished difference Result 85 states and 165 transitions. [2020-09-18 02:23:42,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 02:23:42,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-18 02:23:42,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:42,492 INFO L225 Difference]: With dead ends: 85 [2020-09-18 02:23:42,492 INFO L226 Difference]: Without dead ends: 48 [2020-09-18 02:23:42,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:23:42,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-18 02:23:42,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-18 02:23:42,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-18 02:23:42,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 83 transitions. [2020-09-18 02:23:42,500 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 83 transitions. Word has length 17 [2020-09-18 02:23:42,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:42,500 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-09-18 02:23:42,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:23:42,500 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-09-18 02:23:42,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 02:23:42,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:42,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:42,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-18 02:23:42,503 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:42,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:42,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 2 times [2020-09-18 02:23:42,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:42,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591524386] [2020-09-18 02:23:42,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:42,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:42,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591524386] [2020-09-18 02:23:42,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:42,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:23:42,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1715470763] [2020-09-18 02:23:42,600 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:42,602 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:42,610 INFO L274 McrAutomatonBuilder]: Finished intersection with 38 states and 57 transitions. [2020-09-18 02:23:42,611 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:42,633 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:23:42,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:23:42,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:42,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:23:42,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:23:42,635 INFO L87 Difference]: Start difference. First operand 48 states and 83 transitions. Second operand 4 states. [2020-09-18 02:23:42,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:42,658 INFO L93 Difference]: Finished difference Result 73 states and 130 transitions. [2020-09-18 02:23:42,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 02:23:42,658 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-18 02:23:42,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:42,659 INFO L225 Difference]: With dead ends: 73 [2020-09-18 02:23:42,659 INFO L226 Difference]: Without dead ends: 42 [2020-09-18 02:23:42,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:23:42,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-18 02:23:42,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-18 02:23:42,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-18 02:23:42,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-09-18 02:23:42,662 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 17 [2020-09-18 02:23:42,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:42,662 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-09-18 02:23:42,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:23:42,662 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-09-18 02:23:42,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 02:23:42,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:42,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:42,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-18 02:23:42,669 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:42,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:42,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1323635892, now seen corresponding path program 3 times [2020-09-18 02:23:42,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:42,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861167312] [2020-09-18 02:23:42,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:42,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:42,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861167312] [2020-09-18 02:23:42,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:42,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:23:42,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1441515502] [2020-09-18 02:23:42,764 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:42,767 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:42,773 INFO L274 McrAutomatonBuilder]: Finished intersection with 30 states and 39 transitions. [2020-09-18 02:23:42,773 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:42,810 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:23:42,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:23:42,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:42,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:23:42,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:23:42,811 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 4 states. [2020-09-18 02:23:42,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:42,825 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-09-18 02:23:42,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 02:23:42,826 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-18 02:23:42,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:42,826 INFO L225 Difference]: With dead ends: 41 [2020-09-18 02:23:42,826 INFO L226 Difference]: Without dead ends: 0 [2020-09-18 02:23:42,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:23:42,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-18 02:23:42,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-18 02:23:42,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-18 02:23:42,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-18 02:23:42,828 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-18 02:23:42,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:42,828 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-18 02:23:42,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:23:42,828 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-18 02:23:42,828 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-18 02:23:42,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-18 02:23:42,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 02:23:42 BasicIcfg [2020-09-18 02:23:42,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-18 02:23:42,836 INFO L168 Benchmark]: Toolchain (without parser) took 5050.88 ms. Allocated memory was 140.0 MB in the beginning and 247.5 MB in the end (delta: 107.5 MB). Free memory was 101.8 MB in the beginning and 128.9 MB in the end (delta: -27.1 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. [2020-09-18 02:23:42,837 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-18 02:23:42,838 INFO L168 Benchmark]: CACSL2BoogieTranslator took 835.28 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.1 MB in the beginning and 158.8 MB in the end (delta: -57.6 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-09-18 02:23:42,839 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.28 ms. Allocated memory is still 202.4 MB. Free memory was 158.1 MB in the beginning and 156.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-18 02:23:42,840 INFO L168 Benchmark]: Boogie Preprocessor took 31.10 ms. Allocated memory is still 202.4 MB. Free memory was 156.1 MB in the beginning and 154.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-18 02:23:42,840 INFO L168 Benchmark]: RCFGBuilder took 462.87 ms. Allocated memory is still 202.4 MB. Free memory was 154.7 MB in the beginning and 132.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-09-18 02:23:42,841 INFO L168 Benchmark]: TraceAbstraction took 3656.90 ms. Allocated memory was 202.4 MB in the beginning and 247.5 MB in the end (delta: 45.1 MB). Free memory was 131.5 MB in the beginning and 128.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. [2020-09-18 02:23:42,846 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 835.28 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.1 MB in the beginning and 158.8 MB in the end (delta: -57.6 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.28 ms. Allocated memory is still 202.4 MB. Free memory was 158.1 MB in the beginning and 156.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.10 ms. Allocated memory is still 202.4 MB. Free memory was 156.1 MB in the beginning and 154.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 462.87 ms. Allocated memory is still 202.4 MB. Free memory was 154.7 MB in the beginning and 132.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3656.90 ms. Allocated memory was 202.4 MB in the beginning and 247.5 MB in the end (delta: 45.1 MB). Free memory was 131.5 MB in the beginning and 128.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 626 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2414 CheckedPairsTotal, 56 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 172 SDtfs, 127 SDslu, 210 SDs, 0 SdLazy, 123 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3412 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...