/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_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 01:13:04,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 01:13:04,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 01:13:04,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 01:13:04,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 01:13:04,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 01:13:04,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 01:13:04,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 01:13:04,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 01:13:04,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 01:13:04,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 01:13:04,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 01:13:04,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 01:13:04,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 01:13:04,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 01:13:04,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 01:13:04,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 01:13:04,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 01:13:04,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 01:13:04,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 01:13:04,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 01:13:04,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 01:13:04,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 01:13:04,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 01:13:04,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-06 01:13:04,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-06 01:13:04,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-06 01:13:04,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-06 01:13:04,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-06 01:13:04,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-06 01:13:04,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 01:13:04,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 01:13:04,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 01:13:04,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 01:13:04,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 01:13:04,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 01:13:04,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 01:13:04,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 01:13:04,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 01:13:04,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 01:13:04,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 01:13:04,650 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 [2020-10-06 01:13:04,693 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 01:13:04,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 01:13:04,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 01:13:04,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 01:13:04,695 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 01:13:04,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 01:13:04,696 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 01:13:04,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 01:13:04,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 01:13:04,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 01:13:04,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 01:13:04,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 01:13:04,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 01:13:04,697 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 01:13:04,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 01:13:04,697 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 01:13:04,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 01:13:04,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 01:13:04,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 01:13:04,698 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 01:13:04,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 01:13:04,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 01:13:04,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 01:13:04,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 01:13:04,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 01:13:04,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 01:13:04,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 01:13:04,700 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 01:13:04,700 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 01:13:04,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 01:13:04,700 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 01:13:05,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 01:13:05,042 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 01:13:05,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 01:13:05,048 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 01:13:05,048 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 01:13:05,049 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i [2020-10-06 01:13:05,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb57fdd80/730113937eef4b7c833353f2df3fff3e/FLAGc172d9d86 [2020-10-06 01:13:05,699 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 01:13:05,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i [2020-10-06 01:13:05,715 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb57fdd80/730113937eef4b7c833353f2df3fff3e/FLAGc172d9d86 [2020-10-06 01:13:05,901 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb57fdd80/730113937eef4b7c833353f2df3fff3e [2020-10-06 01:13:05,910 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 01:13:05,913 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 01:13:05,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 01:13:05,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 01:13:05,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 01:13:05,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:13:05" (1/1) ... [2020-10-06 01:13:05,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b68cce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:05, skipping insertion in model container [2020-10-06 01:13:05,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:13:05" (1/1) ... [2020-10-06 01:13:05,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 01:13:05,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 01:13:06,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:13:06,475 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 01:13:06,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:13:06,620 INFO L208 MainTranslator]: Completed translation [2020-10-06 01:13:06,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:06 WrapperNode [2020-10-06 01:13:06,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 01:13:06,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 01:13:06,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 01:13:06,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 01:13:06,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:06" (1/1) ... [2020-10-06 01:13:06,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:06" (1/1) ... [2020-10-06 01:13:06,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 01:13:06,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 01:13:06,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 01:13:06,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 01:13:06,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:06" (1/1) ... [2020-10-06 01:13:06,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:06" (1/1) ... [2020-10-06 01:13:06,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:06" (1/1) ... [2020-10-06 01:13:06,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:06" (1/1) ... [2020-10-06 01:13:06,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:06" (1/1) ... [2020-10-06 01:13:06,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:06" (1/1) ... [2020-10-06 01:13:06,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:06" (1/1) ... [2020-10-06 01:13:06,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 01:13:06,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 01:13:06,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 01:13:06,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 01:13:06,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 01:13:06,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 01:13:06,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-06 01:13:06,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 01:13:06,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 01:13:06,789 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-06 01:13:06,789 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-06 01:13:06,789 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-06 01:13:06,789 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-06 01:13:06,790 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-06 01:13:06,790 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-06 01:13:06,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-06 01:13:06,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 01:13:06,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 01:13:06,793 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 01:13:07,174 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 01:13:07,175 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-06 01:13:07,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:13:07 BoogieIcfgContainer [2020-10-06 01:13:07,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 01:13:07,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 01:13:07,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 01:13:07,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 01:13:07,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 01:13:05" (1/3) ... [2020-10-06 01:13:07,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649a5182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:13:07, skipping insertion in model container [2020-10-06 01:13:07,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:06" (2/3) ... [2020-10-06 01:13:07,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649a5182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:13:07, skipping insertion in model container [2020-10-06 01:13:07,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:13:07" (3/3) ... [2020-10-06 01:13:07,187 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc.i [2020-10-06 01:13:07,198 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 01:13:07,199 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 01:13:07,206 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 01:13:07,207 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 01:13:07,241 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,242 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,242 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,243 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,244 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,244 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,244 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,245 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,245 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,245 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,246 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,246 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,247 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,247 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,247 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,247 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,248 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,248 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,252 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,253 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,253 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,253 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,262 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,262 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,263 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,263 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,265 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,266 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,266 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,266 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:07,283 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-06 01:13:07,307 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 01:13:07,307 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 01:13:07,307 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 01:13:07,308 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 01:13:07,308 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 01:13:07,308 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 01:13:07,308 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 01:13:07,308 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 01:13:07,325 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-06 01:13:07,327 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-06 01:13:07,379 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-06 01:13:07,380 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:13:07,385 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. [2020-10-06 01:13:07,390 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-06 01:13:07,424 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-06 01:13:07,425 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:13:07,426 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. [2020-10-06 01:13:07,428 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-10-06 01:13:07,429 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 01:13:08,872 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2414 [2020-10-06 01:13:08,872 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-10-06 01:13:08,876 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-10-06 01:13:08,902 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-06 01:13:08,905 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-06 01:13:08,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 01:13:08,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:08,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:13:08,914 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:08,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:08,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-10-06 01:13:08,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:08,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242647140] [2020-10-06 01:13:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:09,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:09,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242647140] [2020-10-06 01:13:09,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:09,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:13:09,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1204748616] [2020-10-06 01:13:09,165 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:09,168 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:09,183 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-06 01:13:09,183 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:09,188 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:13:09,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:13:09,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:09,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:13:09,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:13:09,206 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-06 01:13:09,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:09,247 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-10-06 01:13:09,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:13:09,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-06 01:13:09,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:09,265 INFO L225 Difference]: With dead ends: 294 [2020-10-06 01:13:09,265 INFO L226 Difference]: Without dead ends: 230 [2020-10-06 01:13:09,266 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 [2020-10-06 01:13:09,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-06 01:13:09,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-10-06 01:13:09,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-06 01:13:09,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-10-06 01:13:09,335 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-10-06 01:13:09,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:09,336 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-10-06 01:13:09,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:13:09,337 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-10-06 01:13:09,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 01:13:09,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:09,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:13:09,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 01:13:09,339 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:09,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:09,339 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 1 times [2020-10-06 01:13:09,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:09,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406682629] [2020-10-06 01:13:09,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:09,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406682629] [2020-10-06 01:13:09,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:09,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:13:09,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1834457877] [2020-10-06 01:13:09,399 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:09,400 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:09,402 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-10-06 01:13:09,402 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:09,449 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:13:09,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:13:09,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:09,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:13:09,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:13:09,451 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-10-06 01:13:09,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:09,458 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-10-06 01:13:09,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:13:09,459 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-06 01:13:09,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:09,462 INFO L225 Difference]: With dead ends: 202 [2020-10-06 01:13:09,462 INFO L226 Difference]: Without dead ends: 202 [2020-10-06 01:13:09,463 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 [2020-10-06 01:13:09,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-06 01:13:09,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-06 01:13:09,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-06 01:13:09,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-06 01:13:09,480 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-10-06 01:13:09,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:09,480 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-06 01:13:09,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:13:09,480 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-06 01:13:09,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-06 01:13:09,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:09,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:13:09,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 01:13:09,483 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:09,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:09,483 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-10-06 01:13:09,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:09,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155464486] [2020-10-06 01:13:09,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:09,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:09,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155464486] [2020-10-06 01:13:09,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:09,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:13:09,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1317305960] [2020-10-06 01:13:09,535 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:09,536 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:09,537 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-10-06 01:13:09,537 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:09,541 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:13:09,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:13:09,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:09,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:13:09,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:13:09,543 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-06 01:13:09,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:09,561 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-10-06 01:13:09,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:13:09,561 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-06 01:13:09,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:09,563 INFO L225 Difference]: With dead ends: 266 [2020-10-06 01:13:09,563 INFO L226 Difference]: Without dead ends: 140 [2020-10-06 01:13:09,564 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 [2020-10-06 01:13:09,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-06 01:13:09,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-06 01:13:09,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-06 01:13:09,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-10-06 01:13:09,577 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-10-06 01:13:09,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:09,577 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-10-06 01:13:09,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:13:09,577 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-10-06 01:13:09,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 01:13:09,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:09,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:13:09,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 01:13:09,582 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:09,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:09,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-10-06 01:13:09,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:09,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857038802] [2020-10-06 01:13:09,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:09,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:09,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857038802] [2020-10-06 01:13:09,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:09,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:13:09,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [145394628] [2020-10-06 01:13:09,669 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:09,670 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:09,672 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-06 01:13:09,672 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:09,679 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:13:09,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:13:09,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:09,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:13:09,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:13:09,681 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 4 states. [2020-10-06 01:13:09,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:09,719 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-10-06 01:13:09,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:13:09,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-06 01:13:09,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:09,721 INFO L225 Difference]: With dead ends: 165 [2020-10-06 01:13:09,721 INFO L226 Difference]: Without dead ends: 113 [2020-10-06 01:13:09,721 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 [2020-10-06 01:13:09,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-06 01:13:09,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-10-06 01:13:09,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-06 01:13:09,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-10-06 01:13:09,728 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-10-06 01:13:09,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:09,728 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-10-06 01:13:09,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:13:09,728 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-10-06 01:13:09,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 01:13:09,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:09,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:13:09,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-06 01:13:09,730 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:09,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:09,730 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-10-06 01:13:09,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:09,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495836488] [2020-10-06 01:13:09,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:09,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:09,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495836488] [2020-10-06 01:13:09,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:09,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:13:09,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1103233008] [2020-10-06 01:13:09,796 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:09,797 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:09,799 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-06 01:13:09,799 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:09,815 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2994#(<= ~__unbuffered_cnt~0 0)] [2020-10-06 01:13:09,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-06 01:13:09,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:09,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-06 01:13:09,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-06 01:13:09,816 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 6 states. [2020-10-06 01:13:09,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:09,864 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-10-06 01:13:09,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:13:09,864 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-06 01:13:09,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:09,865 INFO L225 Difference]: With dead ends: 111 [2020-10-06 01:13:09,865 INFO L226 Difference]: Without dead ends: 80 [2020-10-06 01:13:09,866 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 [2020-10-06 01:13:09,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-06 01:13:09,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-06 01:13:09,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-06 01:13:09,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-10-06 01:13:09,869 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-10-06 01:13:09,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:09,870 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-10-06 01:13:09,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-06 01:13:09,870 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-10-06 01:13:09,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-06 01:13:09,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:09,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:13:09,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-06 01:13:09,871 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:09,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:09,872 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-10-06 01:13:09,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:09,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386622479] [2020-10-06 01:13:09,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:09,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386622479] [2020-10-06 01:13:09,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:09,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-06 01:13:09,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1324877265] [2020-10-06 01:13:09,965 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:09,967 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:09,972 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-10-06 01:13:09,972 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:10,011 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3274#(<= ~__unbuffered_cnt~0 0)] [2020-10-06 01:13:10,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:13:10,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:10,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:13:10,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:13:10,012 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 7 states. [2020-10-06 01:13:10,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:10,078 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-10-06 01:13:10,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-06 01:13:10,078 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-06 01:13:10,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:10,079 INFO L225 Difference]: With dead ends: 75 [2020-10-06 01:13:10,079 INFO L226 Difference]: Without dead ends: 66 [2020-10-06 01:13:10,080 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 [2020-10-06 01:13:10,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-06 01:13:10,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-06 01:13:10,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-06 01:13:10,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-10-06 01:13:10,083 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-10-06 01:13:10,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:10,083 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-10-06 01:13:10,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:13:10,083 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-10-06 01:13:10,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 01:13:10,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:10,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:13:10,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-06 01:13:10,085 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:10,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:10,085 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-10-06 01:13:10,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:10,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574038919] [2020-10-06 01:13:10,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:10,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:10,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574038919] [2020-10-06 01:13:10,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:10,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:13:10,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1212636975] [2020-10-06 01:13:10,120 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:10,122 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:10,127 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 57 transitions. [2020-10-06 01:13:10,128 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:10,143 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:13:10,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:13:10,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:10,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:13:10,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:13:10,145 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 4 states. [2020-10-06 01:13:10,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:10,162 INFO L93 Difference]: Finished difference Result 85 states and 165 transitions. [2020-10-06 01:13:10,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:13:10,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-06 01:13:10,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:10,164 INFO L225 Difference]: With dead ends: 85 [2020-10-06 01:13:10,164 INFO L226 Difference]: Without dead ends: 48 [2020-10-06 01:13:10,164 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 [2020-10-06 01:13:10,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-06 01:13:10,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-06 01:13:10,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-06 01:13:10,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 83 transitions. [2020-10-06 01:13:10,167 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 83 transitions. Word has length 17 [2020-10-06 01:13:10,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:10,167 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-10-06 01:13:10,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:13:10,167 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-10-06 01:13:10,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 01:13:10,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:10,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:13:10,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-06 01:13:10,169 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:10,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:10,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 2 times [2020-10-06 01:13:10,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:10,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556827626] [2020-10-06 01:13:10,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:10,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:10,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556827626] [2020-10-06 01:13:10,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:10,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:13:10,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1848135041] [2020-10-06 01:13:10,201 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:10,203 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:10,209 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 57 transitions. [2020-10-06 01:13:10,209 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:10,223 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:13:10,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:13:10,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:10,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:13:10,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:13:10,224 INFO L87 Difference]: Start difference. First operand 48 states and 83 transitions. Second operand 4 states. [2020-10-06 01:13:10,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:10,248 INFO L93 Difference]: Finished difference Result 73 states and 130 transitions. [2020-10-06 01:13:10,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:13:10,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-06 01:13:10,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:10,249 INFO L225 Difference]: With dead ends: 73 [2020-10-06 01:13:10,250 INFO L226 Difference]: Without dead ends: 42 [2020-10-06 01:13:10,250 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 [2020-10-06 01:13:10,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-06 01:13:10,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-06 01:13:10,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-06 01:13:10,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-10-06 01:13:10,252 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 17 [2020-10-06 01:13:10,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:10,252 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-10-06 01:13:10,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:13:10,253 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-10-06 01:13:10,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 01:13:10,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:10,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:13:10,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-06 01:13:10,254 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:10,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:10,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1323635892, now seen corresponding path program 3 times [2020-10-06 01:13:10,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:10,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951256625] [2020-10-06 01:13:10,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:10,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:10,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951256625] [2020-10-06 01:13:10,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:10,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:13:10,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1732250430] [2020-10-06 01:13:10,287 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:10,289 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:10,293 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 39 transitions. [2020-10-06 01:13:10,294 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:10,316 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:13:10,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:13:10,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:10,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:13:10,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:13:10,317 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 4 states. [2020-10-06 01:13:10,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:10,327 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-10-06 01:13:10,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:13:10,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-06 01:13:10,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:10,327 INFO L225 Difference]: With dead ends: 41 [2020-10-06 01:13:10,328 INFO L226 Difference]: Without dead ends: 0 [2020-10-06 01:13:10,328 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 [2020-10-06 01:13:10,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-06 01:13:10,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-06 01:13:10,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-06 01:13:10,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-06 01:13:10,329 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-06 01:13:10,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:10,329 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-06 01:13:10,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:13:10,329 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-06 01:13:10,330 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-06 01:13:10,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-06 01:13:10,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 01:13:10 BasicIcfg [2020-10-06 01:13:10,334 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 01:13:10,337 INFO L168 Benchmark]: Toolchain (without parser) took 4423.91 ms. Allocated memory was 138.9 MB in the beginning and 251.1 MB in the end (delta: 112.2 MB). Free memory was 101.1 MB in the beginning and 150.3 MB in the end (delta: -49.2 MB). Peak memory consumption was 63.0 MB. Max. memory is 7.1 GB. [2020-10-06 01:13:10,337 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-06 01:13:10,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.48 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.9 MB in the beginning and 159.6 MB in the end (delta: -58.7 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-10-06 01:13:10,339 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.29 ms. Allocated memory is still 202.4 MB. Free memory was 159.6 MB in the beginning and 157.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-06 01:13:10,340 INFO L168 Benchmark]: Boogie Preprocessor took 33.49 ms. Allocated memory is still 202.4 MB. Free memory was 157.5 MB in the beginning and 156.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-06 01:13:10,341 INFO L168 Benchmark]: RCFGBuilder took 462.53 ms. Allocated memory is still 202.4 MB. Free memory was 156.2 MB in the beginning and 133.2 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-10-06 01:13:10,342 INFO L168 Benchmark]: TraceAbstraction took 3155.11 ms. Allocated memory was 202.4 MB in the beginning and 251.1 MB in the end (delta: 48.8 MB). Free memory was 133.2 MB in the beginning and 150.3 MB in the end (delta: -17.2 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. [2020-10-06 01:13:10,346 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 707.48 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.9 MB in the beginning and 159.6 MB in the end (delta: -58.7 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.29 ms. Allocated memory is still 202.4 MB. Free memory was 159.6 MB in the beginning and 157.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.49 ms. Allocated memory is still 202.4 MB. Free memory was 157.5 MB in the beginning and 156.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 462.53 ms. Allocated memory is still 202.4 MB. Free memory was 156.2 MB in the beginning and 133.2 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3155.11 ms. Allocated memory was 202.4 MB in the beginning and 251.1 MB in the end (delta: 48.8 MB). Free memory was 133.2 MB in the beginning and 150.3 MB in the end (delta: -17.2 MB). Peak memory consumption was 31.6 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: 3.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, 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: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s 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...