/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:17:21,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:17:21,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:17:21,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:17:21,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:17:21,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:17:21,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:17:21,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:17:21,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:17:21,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:17:21,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:17:21,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:17:21,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:17:21,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:17:21,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:17:21,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:17:21,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:17:21,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:17:21,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:17:21,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:17:21,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:17:21,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:17:21,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:17:21,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:17:21,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 11:17:21,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 11:17:21,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 11:17:21,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 11:17:21,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 11:17:21,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 11:17:21,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:17:21,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:17:21,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:17:21,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:17:21,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:17:21,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:17:21,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:17:21,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:17:21,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:17:21,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:17:21,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:17:21,668 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 11:17:21,693 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:17:21,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:17:21,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:17:21,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:17:21,695 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:17:21,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:17:21,696 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:17:21,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:17:21,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:17:21,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:17:21,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:17:21,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:17:21,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:17:21,697 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:17:21,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:17:21,697 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:17:21,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:17:21,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:17:21,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:17:21,698 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:17:21,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:17:21,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:17:21,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:17:21,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:17:21,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:17:21,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:17:21,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:17:21,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:17:21,700 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:17:21,700 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:17:21,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:17:21,993 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:17:21,996 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:17:21,997 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:17:21,998 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:17:21,998 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2020-10-16 11:17:22,068 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f071bef3/fcb0934123d940078de0a2d9b706a419/FLAG486364338 [2020-10-16 11:17:22,654 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:17:22,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2020-10-16 11:17:22,685 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f071bef3/fcb0934123d940078de0a2d9b706a419/FLAG486364338 [2020-10-16 11:17:22,886 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f071bef3/fcb0934123d940078de0a2d9b706a419 [2020-10-16 11:17:22,893 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:17:22,895 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:17:22,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:17:22,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:17:22,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:17:22,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:17:22" (1/1) ... [2020-10-16 11:17:22,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2280fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:22, skipping insertion in model container [2020-10-16 11:17:22,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:17:22" (1/1) ... [2020-10-16 11:17:22,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:17:22,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:17:23,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:17:23,405 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:17:23,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:17:23,544 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:17:23,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:23 WrapperNode [2020-10-16 11:17:23,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:17:23,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:17:23,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:17:23,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:17:23,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:23" (1/1) ... [2020-10-16 11:17:23,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:23" (1/1) ... [2020-10-16 11:17:23,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:17:23,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:17:23,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:17:23,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:17:23,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:23" (1/1) ... [2020-10-16 11:17:23,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:23" (1/1) ... [2020-10-16 11:17:23,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:23" (1/1) ... [2020-10-16 11:17:23,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:23" (1/1) ... [2020-10-16 11:17:23,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:23" (1/1) ... [2020-10-16 11:17:23,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:23" (1/1) ... [2020-10-16 11:17:23,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:23" (1/1) ... [2020-10-16 11:17:23,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:17:23,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:17:23,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:17:23,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:17:23,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:17:23,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:17:23,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 11:17:23,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:17:23,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:17:23,688 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 11:17:23,688 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 11:17:23,688 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 11:17:23,688 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 11:17:23,688 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 11:17:23,688 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 11:17:23,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 11:17:23,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:17:23,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:17:23,690 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:17:24,021 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:17:24,022 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 11:17:24,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:17:24 BoogieIcfgContainer [2020-10-16 11:17:24,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:17:24,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:17:24,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:17:24,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:17:24,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:17:22" (1/3) ... [2020-10-16 11:17:24,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b26756f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:17:24, skipping insertion in model container [2020-10-16 11:17:24,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:23" (2/3) ... [2020-10-16 11:17:24,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b26756f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:17:24, skipping insertion in model container [2020-10-16 11:17:24,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:17:24" (3/3) ... [2020-10-16 11:17:24,033 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.oepc.i [2020-10-16 11:17:24,044 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:17:24,044 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:17:24,051 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:17:24,052 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:17:24,083 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,084 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,084 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,084 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,085 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,085 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,086 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,086 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,088 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,088 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,088 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,088 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,089 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,089 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,093 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,093 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,093 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,094 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,100 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,100 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,101 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,101 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,103 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,104 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,104 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,104 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:24,107 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:17:24,121 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 11:17:24,141 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:17:24,141 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:17:24,141 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:17:24,141 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:17:24,141 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:17:24,142 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:17:24,142 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:17:24,142 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:17:24,154 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:17:24,157 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 11:17:24,160 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 11:17:24,162 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 11:17:24,206 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 11:17:24,206 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:17:24,211 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 46 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. [2020-10-16 11:17:24,214 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 11:17:25,880 INFO L132 LiptonReduction]: Checked pairs total: 2810 [2020-10-16 11:17:25,881 INFO L134 LiptonReduction]: Total number of compositions: 60 [2020-10-16 11:17:25,888 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-16 11:17:25,929 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 11:17:25,931 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 11:17:25,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:17:25,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:17:25,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:17:25,965 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:17:25,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:17:25,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-10-16 11:17:25,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:17:25,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687136507] [2020-10-16 11:17:25,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:17:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:17:26,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:17:26,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687136507] [2020-10-16 11:17:26,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:17:26,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:17:26,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652236492] [2020-10-16 11:17:26,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:17:26,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:17:26,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:17:26,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:17:26,224 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 11:17:26,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:17:26,272 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-16 11:17:26,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:17:26,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 11:17:26,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:17:26,289 INFO L225 Difference]: With dead ends: 282 [2020-10-16 11:17:26,290 INFO L226 Difference]: Without dead ends: 218 [2020-10-16 11:17:26,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:17:26,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-16 11:17:26,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-16 11:17:26,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-16 11:17:26,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-16 11:17:26,358 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-16 11:17:26,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:17:26,359 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-16 11:17:26,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:17:26,359 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-16 11:17:26,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:17:26,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:17:26,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:17:26,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:17:26,361 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:17:26,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:17:26,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-10-16 11:17:26,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:17:26,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914339126] [2020-10-16 11:17:26,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:17:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:17:26,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:17:26,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914339126] [2020-10-16 11:17:26,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:17:26,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:17:26,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734448926] [2020-10-16 11:17:26,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:17:26,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:17:26,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:17:26,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:17:26,459 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-16 11:17:26,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:17:26,495 INFO L93 Difference]: Finished difference Result 290 states and 762 transitions. [2020-10-16 11:17:26,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:17:26,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 11:17:26,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:17:26,498 INFO L225 Difference]: With dead ends: 290 [2020-10-16 11:17:26,498 INFO L226 Difference]: Without dead ends: 164 [2020-10-16 11:17:26,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:17:26,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-16 11:17:26,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-10-16 11:17:26,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-16 11:17:26,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 424 transitions. [2020-10-16 11:17:26,516 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 424 transitions. Word has length 9 [2020-10-16 11:17:26,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:17:26,516 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 424 transitions. [2020-10-16 11:17:26,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:17:26,517 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 424 transitions. [2020-10-16 11:17:26,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:17:26,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:17:26,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:17:26,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:17:26,519 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:17:26,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:17:26,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1379691760, now seen corresponding path program 1 times [2020-10-16 11:17:26,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:17:26,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194700445] [2020-10-16 11:17:26,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:17:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:17:26,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:17:26,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194700445] [2020-10-16 11:17:26,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:17:26,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:17:26,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848685750] [2020-10-16 11:17:26,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:17:26,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:17:26,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:17:26,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:17:26,621 INFO L87 Difference]: Start difference. First operand 164 states and 424 transitions. Second operand 4 states. [2020-10-16 11:17:26,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:17:26,656 INFO L93 Difference]: Finished difference Result 244 states and 582 transitions. [2020-10-16 11:17:26,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:17:26,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 11:17:26,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:17:26,658 INFO L225 Difference]: With dead ends: 244 [2020-10-16 11:17:26,659 INFO L226 Difference]: Without dead ends: 128 [2020-10-16 11:17:26,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:17:26,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-16 11:17:26,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 116. [2020-10-16 11:17:26,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-16 11:17:26,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 268 transitions. [2020-10-16 11:17:26,670 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 268 transitions. Word has length 11 [2020-10-16 11:17:26,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:17:26,671 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 268 transitions. [2020-10-16 11:17:26,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:17:26,671 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 268 transitions. [2020-10-16 11:17:26,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:17:26,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:17:26,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:17:26,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:17:26,673 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:17:26,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:17:26,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-10-16 11:17:26,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:17:26,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192576447] [2020-10-16 11:17:26,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:17:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:17:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:17:26,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192576447] [2020-10-16 11:17:26,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:17:26,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:17:26,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284957685] [2020-10-16 11:17:26,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:17:26,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:17:26,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:17:26,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:17:26,712 INFO L87 Difference]: Start difference. First operand 116 states and 268 transitions. Second operand 4 states. [2020-10-16 11:17:26,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:17:26,734 INFO L93 Difference]: Finished difference Result 140 states and 310 transitions. [2020-10-16 11:17:26,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:17:26,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 11:17:26,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:17:26,736 INFO L225 Difference]: With dead ends: 140 [2020-10-16 11:17:26,736 INFO L226 Difference]: Without dead ends: 68 [2020-10-16 11:17:26,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:17:26,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-16 11:17:26,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-16 11:17:26,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-16 11:17:26,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-10-16 11:17:26,742 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 11 [2020-10-16 11:17:26,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:17:26,743 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-10-16 11:17:26,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:17:26,743 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-10-16 11:17:26,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:17:26,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:17:26,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:17:26,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:17:26,745 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:17:26,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:17:26,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 1 times [2020-10-16 11:17:26,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:17:26,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082703579] [2020-10-16 11:17:26,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:17:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:17:26,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:17:26,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082703579] [2020-10-16 11:17:26,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:17:26,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:17:26,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088125108] [2020-10-16 11:17:26,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:17:26,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:17:26,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:17:26,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:17:26,861 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-10-16 11:17:26,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:17:26,896 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-10-16 11:17:26,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:17:26,896 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 11:17:26,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:17:26,897 INFO L225 Difference]: With dead ends: 81 [2020-10-16 11:17:26,897 INFO L226 Difference]: Without dead ends: 59 [2020-10-16 11:17:26,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:17:26,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-16 11:17:26,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-16 11:17:26,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-16 11:17:26,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-10-16 11:17:26,905 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-10-16 11:17:26,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:17:26,906 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-10-16 11:17:26,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:17:26,906 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-10-16 11:17:26,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 11:17:26,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:17:26,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:17:26,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:17:26,908 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:17:26,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:17:26,908 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-10-16 11:17:26,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:17:26,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138616342] [2020-10-16 11:17:26,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:17:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:17:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:17:27,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138616342] [2020-10-16 11:17:27,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:17:27,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:17:27,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199877605] [2020-10-16 11:17:27,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:17:27,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:17:27,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:17:27,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:17:27,037 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-10-16 11:17:27,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:17:27,091 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-10-16 11:17:27,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:17:27,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-16 11:17:27,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:17:27,092 INFO L225 Difference]: With dead ends: 60 [2020-10-16 11:17:27,093 INFO L226 Difference]: Without dead ends: 45 [2020-10-16 11:17:27,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:17:27,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-16 11:17:27,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-16 11:17:27,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-16 11:17:27,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-10-16 11:17:27,102 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-10-16 11:17:27,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:17:27,102 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-10-16 11:17:27,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:17:27,102 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-10-16 11:17:27,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:17:27,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:17:27,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:17:27,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:17:27,103 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:17:27,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:17:27,104 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-10-16 11:17:27,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:17:27,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405218094] [2020-10-16 11:17:27,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:17:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:17:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:17:27,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405218094] [2020-10-16 11:17:27,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:17:27,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 11:17:27,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803119948] [2020-10-16 11:17:27,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 11:17:27,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:17:27,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 11:17:27,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:17:27,225 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-10-16 11:17:27,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:17:27,266 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-10-16 11:17:27,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:17:27,266 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-16 11:17:27,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:17:27,267 INFO L225 Difference]: With dead ends: 42 [2020-10-16 11:17:27,267 INFO L226 Difference]: Without dead ends: 36 [2020-10-16 11:17:27,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:17:27,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-16 11:17:27,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-16 11:17:27,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-16 11:17:27,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-16 11:17:27,270 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-16 11:17:27,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:17:27,271 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-16 11:17:27,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 11:17:27,271 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-16 11:17:27,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:17:27,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:17:27,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:17:27,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 11:17:27,272 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:17:27,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:17:27,272 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-10-16 11:17:27,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:17:27,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576361414] [2020-10-16 11:17:27,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:17:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:17:27,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:17:27,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576361414] [2020-10-16 11:17:27,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:17:27,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:17:27,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787917173] [2020-10-16 11:17:27,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:17:27,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:17:27,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:17:27,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:17:27,306 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-16 11:17:27,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:17:27,321 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-16 11:17:27,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:17:27,321 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 11:17:27,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:17:27,322 INFO L225 Difference]: With dead ends: 35 [2020-10-16 11:17:27,322 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 11:17:27,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:17:27,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 11:17:27,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 11:17:27,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 11:17:27,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 11:17:27,323 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 11:17:27,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:17:27,323 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 11:17:27,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:17:27,324 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 11:17:27,324 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 11:17:27,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 11:17:27,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:17:27 BasicIcfg [2020-10-16 11:17:27,328 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:17:27,330 INFO L168 Benchmark]: Toolchain (without parser) took 4434.70 ms. Allocated memory was 138.9 MB in the beginning and 250.1 MB in the end (delta: 111.1 MB). Free memory was 100.3 MB in the beginning and 164.4 MB in the end (delta: -64.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. [2020-10-16 11:17:27,331 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 11:17:27,332 INFO L168 Benchmark]: CACSL2BoogieTranslator took 648.82 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 99.9 MB in the beginning and 160.3 MB in the end (delta: -60.4 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:17:27,333 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.30 ms. Allocated memory is still 202.4 MB. Free memory was 160.3 MB in the beginning and 157.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-16 11:17:27,334 INFO L168 Benchmark]: Boogie Preprocessor took 24.12 ms. Allocated memory is still 202.4 MB. Free memory was 157.7 MB in the beginning and 156.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-16 11:17:27,335 INFO L168 Benchmark]: RCFGBuilder took 406.10 ms. Allocated memory is still 202.4 MB. Free memory was 156.3 MB in the beginning and 133.5 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-10-16 11:17:27,336 INFO L168 Benchmark]: TraceAbstraction took 3302.39 ms. Allocated memory was 202.4 MB in the beginning and 250.1 MB in the end (delta: 47.7 MB). Free memory was 133.5 MB in the beginning and 164.4 MB in the end (delta: -30.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-10-16 11:17:27,339 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 648.82 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 99.9 MB in the beginning and 160.3 MB in the end (delta: -60.4 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.30 ms. Allocated memory is still 202.4 MB. Free memory was 160.3 MB in the beginning and 157.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.12 ms. Allocated memory is still 202.4 MB. Free memory was 157.7 MB in the beginning and 156.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 406.10 ms. Allocated memory is still 202.4 MB. Free memory was 156.3 MB in the beginning and 133.5 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3302.39 ms. Allocated memory was 202.4 MB in the beginning and 250.1 MB in the end (delta: 47.7 MB). Free memory was 133.5 MB in the beginning and 164.4 MB in the end (delta: -30.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 847 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 63 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 2810 MoverChecksTotal - 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: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 145 SDtfs, 140 SDslu, 178 SDs, 0 SdLazy, 112 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s 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, 8 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...