/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/safe013_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 23:41:14,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 23:41:14,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 23:41:14,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 23:41:14,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 23:41:14,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 23:41:14,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 23:41:14,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 23:41:14,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 23:41:14,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 23:41:14,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 23:41:14,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 23:41:14,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 23:41:14,794 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 23:41:14,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 23:41:14,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 23:41:14,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 23:41:14,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 23:41:14,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 23:41:14,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 23:41:14,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 23:41:14,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 23:41:14,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 23:41:14,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 23:41:14,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 23:41:14,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 23:41:14,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 23:41:14,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 23:41:14,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 23:41:14,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 23:41:14,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 23:41:14,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 23:41:14,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 23:41:14,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 23:41:14,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 23:41:14,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 23:41:14,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 23:41:14,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 23:41:14,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 23:41:14,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 23:41:14,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 23:41:14,818 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-11 23:41:14,842 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 23:41:14,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 23:41:14,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 23:41:14,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 23:41:14,844 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 23:41:14,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 23:41:14,844 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 23:41:14,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 23:41:14,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 23:41:14,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 23:41:14,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 23:41:14,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 23:41:14,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 23:41:14,845 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 23:41:14,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 23:41:14,846 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 23:41:14,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 23:41:14,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 23:41:14,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 23:41:14,846 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 23:41:14,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 23:41:14,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:41:14,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 23:41:14,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 23:41:14,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 23:41:14,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 23:41:14,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 23:41:14,848 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 23:41:14,848 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 23:41:14,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 23:41:14,852 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 23:41:15,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 23:41:15,369 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 23:41:15,375 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 23:41:15,378 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 23:41:15,379 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 23:41:15,383 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2020-09-11 23:41:15,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/180ae0ca6/33c6ade53fb5494abca34cc09f257714/FLAG03eb31c34 [2020-09-11 23:41:16,081 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 23:41:16,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2020-09-11 23:41:16,098 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/180ae0ca6/33c6ade53fb5494abca34cc09f257714/FLAG03eb31c34 [2020-09-11 23:41:16,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/180ae0ca6/33c6ade53fb5494abca34cc09f257714 [2020-09-11 23:41:16,369 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 23:41:16,374 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 23:41:16,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 23:41:16,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 23:41:16,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 23:41:16,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:41:16" (1/1) ... [2020-09-11 23:41:16,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3654f54b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:16, skipping insertion in model container [2020-09-11 23:41:16,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:41:16" (1/1) ... [2020-09-11 23:41:16,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 23:41:16,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 23:41:17,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:41:17,056 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 23:41:17,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:41:17,181 INFO L208 MainTranslator]: Completed translation [2020-09-11 23:41:17,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:17 WrapperNode [2020-09-11 23:41:17,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 23:41:17,183 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 23:41:17,183 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 23:41:17,183 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 23:41:17,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:17" (1/1) ... [2020-09-11 23:41:17,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:17" (1/1) ... [2020-09-11 23:41:17,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 23:41:17,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 23:41:17,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 23:41:17,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 23:41:17,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:17" (1/1) ... [2020-09-11 23:41:17,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:17" (1/1) ... [2020-09-11 23:41:17,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:17" (1/1) ... [2020-09-11 23:41:17,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:17" (1/1) ... [2020-09-11 23:41:17,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:17" (1/1) ... [2020-09-11 23:41:17,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:17" (1/1) ... [2020-09-11 23:41:17,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:17" (1/1) ... [2020-09-11 23:41:17,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 23:41:17,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 23:41:17,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 23:41:17,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 23:41:17,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:41:17,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 23:41:17,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 23:41:17,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 23:41:17,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 23:41:17,361 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 23:41:17,361 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 23:41:17,362 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 23:41:17,362 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 23:41:17,362 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 23:41:17,362 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 23:41:17,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 23:41:17,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 23:41:17,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 23:41:17,366 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 23:41:17,743 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 23:41:17,744 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 23:41:17,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:41:17 BoogieIcfgContainer [2020-09-11 23:41:17,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 23:41:17,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 23:41:17,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 23:41:17,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 23:41:17,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:41:16" (1/3) ... [2020-09-11 23:41:17,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5934b310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:41:17, skipping insertion in model container [2020-09-11 23:41:17,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:17" (2/3) ... [2020-09-11 23:41:17,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5934b310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:41:17, skipping insertion in model container [2020-09-11 23:41:17,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:41:17" (3/3) ... [2020-09-11 23:41:17,760 INFO L109 eAbstractionObserver]: Analyzing ICFG safe013_tso.oepc.i [2020-09-11 23:41:17,772 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 23:41:17,772 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 23:41:17,783 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 23:41:17,784 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 23:41:17,819 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,819 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,819 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,820 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,820 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,821 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,821 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,821 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,822 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,822 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,822 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,823 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,823 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,823 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,824 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,824 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,824 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,824 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,833 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,836 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,836 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,836 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,846 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,846 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,847 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,847 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,850 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,851 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,851 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,851 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:17,874 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 23:41:17,898 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 23:41:17,898 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 23:41:17,898 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 23:41:17,898 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 23:41:17,898 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 23:41:17,899 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 23:41:17,899 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 23:41:17,899 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 23:41:17,918 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-11 23:41:17,921 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 23:41:17,998 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 23:41:17,999 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:41:18,005 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 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 23:41:18,008 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 23:41:18,034 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 23:41:18,038 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:41:18,039 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 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 23:41:18,042 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-11 23:41:18,044 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 23:41:19,650 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-09-11 23:41:19,858 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2190 [2020-09-11 23:41:19,858 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-09-11 23:41:19,863 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-09-11 23:41:19,892 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-11 23:41:19,895 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-11 23:41:19,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 23:41:19,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:19,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:19,907 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:19,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:19,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1620259193, now seen corresponding path program 1 times [2020-09-11 23:41:19,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:19,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749020737] [2020-09-11 23:41:19,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:20,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:41:20,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749020737] [2020-09-11 23:41:20,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:20,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:41:20,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1882382955] [2020-09-11 23:41:20,244 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:20,248 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:20,264 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-11 23:41:20,265 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:20,267 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:41:20,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:41:20,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:20,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:41:20,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:41:20,290 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-11 23:41:20,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:20,333 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-09-11 23:41:20,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:41:20,335 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 23:41:20,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:20,355 INFO L225 Difference]: With dead ends: 290 [2020-09-11 23:41:20,355 INFO L226 Difference]: Without dead ends: 226 [2020-09-11 23:41:20,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:41:20,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-11 23:41:20,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-11 23:41:20,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-11 23:41:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-09-11 23:41:20,444 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-09-11 23:41:20,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:20,446 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-09-11 23:41:20,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:41:20,446 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-09-11 23:41:20,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 23:41:20,448 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:20,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:20,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 23:41:20,448 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:20,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:20,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1042338189, now seen corresponding path program 1 times [2020-09-11 23:41:20,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:20,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728830248] [2020-09-11 23:41:20,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:20,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:41:20,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728830248] [2020-09-11 23:41:20,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:20,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:41:20,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1521395001] [2020-09-11 23:41:20,569 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:20,571 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:20,574 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-11 23:41:20,574 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:20,622 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:41:20,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:41:20,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:20,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:41:20,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:41:20,625 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-09-11 23:41:20,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:20,635 INFO L93 Difference]: Finished difference Result 214 states and 585 transitions. [2020-09-11 23:41:20,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:41:20,635 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-11 23:41:20,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:20,638 INFO L225 Difference]: With dead ends: 214 [2020-09-11 23:41:20,639 INFO L226 Difference]: Without dead ends: 214 [2020-09-11 23:41:20,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:41:20,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-11 23:41:20,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-09-11 23:41:20,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-09-11 23:41:20,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 585 transitions. [2020-09-11 23:41:20,661 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 585 transitions. Word has length 9 [2020-09-11 23:41:20,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:20,662 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 585 transitions. [2020-09-11 23:41:20,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:41:20,662 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 585 transitions. [2020-09-11 23:41:20,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 23:41:20,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:20,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:20,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 23:41:20,664 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:20,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:20,665 INFO L82 PathProgramCache]: Analyzing trace with hash 2047253273, now seen corresponding path program 1 times [2020-09-11 23:41:20,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:20,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584812647] [2020-09-11 23:41:20,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:20,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:41:20,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584812647] [2020-09-11 23:41:20,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:20,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:41:20,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1230058395] [2020-09-11 23:41:20,747 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:20,748 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:20,750 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-09-11 23:41:20,750 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:20,832 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:41:20,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:41:20,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:20,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:41:20,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:41:20,833 INFO L87 Difference]: Start difference. First operand 214 states and 585 transitions. Second operand 4 states. [2020-09-11 23:41:20,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:20,862 INFO L93 Difference]: Finished difference Result 240 states and 627 transitions. [2020-09-11 23:41:20,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:41:20,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-11 23:41:20,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:20,864 INFO L225 Difference]: With dead ends: 240 [2020-09-11 23:41:20,864 INFO L226 Difference]: Without dead ends: 144 [2020-09-11 23:41:20,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:41:20,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-11 23:41:20,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-09-11 23:41:20,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-11 23:41:20,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-09-11 23:41:20,886 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 10 [2020-09-11 23:41:20,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:20,886 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-09-11 23:41:20,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:41:20,886 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-09-11 23:41:20,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 23:41:20,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:20,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:20,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 23:41:20,890 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:20,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:20,890 INFO L82 PathProgramCache]: Analyzing trace with hash 315672505, now seen corresponding path program 1 times [2020-09-11 23:41:20,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:20,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016587471] [2020-09-11 23:41:20,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:20,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:41:20,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016587471] [2020-09-11 23:41:20,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:20,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:41:20,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [997122586] [2020-09-11 23:41:20,995 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:20,996 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:21,001 INFO L274 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-09-11 23:41:21,001 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:21,032 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:41:21,064 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:41:21,090 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:41:21,114 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:41:21,132 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:41:21,160 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:41:21,175 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:41:21,190 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:41:21,220 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:41:21,325 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:41:21,344 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:41:21,356 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:41:21,365 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:41:21,370 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2605#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-11 23:41:21,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:41:21,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:21,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:41:21,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:41:21,372 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 5 states. [2020-09-11 23:41:21,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:21,431 INFO L93 Difference]: Finished difference Result 137 states and 312 transitions. [2020-09-11 23:41:21,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:41:21,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-11 23:41:21,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:21,433 INFO L225 Difference]: With dead ends: 137 [2020-09-11 23:41:21,433 INFO L226 Difference]: Without dead ends: 97 [2020-09-11 23:41:21,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 6 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:41:21,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-11 23:41:21,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-09-11 23:41:21,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-11 23:41:21,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-09-11 23:41:21,440 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 12 [2020-09-11 23:41:21,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:21,441 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-09-11 23:41:21,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:41:21,441 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-09-11 23:41:21,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 23:41:21,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:21,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:21,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 23:41:21,443 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:21,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:21,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1634628682, now seen corresponding path program 1 times [2020-09-11 23:41:21,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:21,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584692409] [2020-09-11 23:41:21,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:21,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:41:21,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584692409] [2020-09-11 23:41:21,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:21,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:41:21,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2109870907] [2020-09-11 23:41:21,504 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:21,506 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:21,509 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-09-11 23:41:21,509 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:21,514 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:41:21,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:41:21,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:21,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:41:21,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:41:21,515 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-09-11 23:41:21,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:21,526 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-09-11 23:41:21,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:41:21,527 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-09-11 23:41:21,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:21,528 INFO L225 Difference]: With dead ends: 115 [2020-09-11 23:41:21,528 INFO L226 Difference]: Without dead ends: 98 [2020-09-11 23:41:21,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:41:21,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-11 23:41:21,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-09-11 23:41:21,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-11 23:41:21,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-09-11 23:41:21,542 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-09-11 23:41:21,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:21,543 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-09-11 23:41:21,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:41:21,543 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-09-11 23:41:21,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 23:41:21,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:21,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:21,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 23:41:21,548 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:21,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:21,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1887879687, now seen corresponding path program 1 times [2020-09-11 23:41:21,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:21,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130320847] [2020-09-11 23:41:21,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:21,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:41:21,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130320847] [2020-09-11 23:41:21,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:21,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 23:41:21,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1681584954] [2020-09-11 23:41:21,643 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:21,645 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:21,651 INFO L274 McrAutomatonBuilder]: Finished intersection with 43 states and 73 transitions. [2020-09-11 23:41:21,651 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:21,656 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:41:21,833 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [3257#(not (= 3 ~__unbuffered_cnt~0)), 3258#(not (= ~__unbuffered_cnt~0 2)), 3259#(not (= ~__unbuffered_cnt~0 1)), 3260#(<= ~__unbuffered_cnt~0 0)] [2020-09-11 23:41:21,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-11 23:41:21,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:21,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-11 23:41:21,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-11 23:41:21,835 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 10 states. [2020-09-11 23:41:21,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:21,904 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-09-11 23:41:21,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:41:21,905 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-09-11 23:41:21,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:21,905 INFO L225 Difference]: With dead ends: 92 [2020-09-11 23:41:21,906 INFO L226 Difference]: Without dead ends: 36 [2020-09-11 23:41:21,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-11 23:41:21,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-11 23:41:21,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-11 23:41:21,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-11 23:41:21,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-09-11 23:41:21,909 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-09-11 23:41:21,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:21,909 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-09-11 23:41:21,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-11 23:41:21,910 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-09-11 23:41:21,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:41:21,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:21,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:21,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 23:41:21,911 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:21,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:21,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1759545272, now seen corresponding path program 1 times [2020-09-11 23:41:21,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:21,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427291129] [2020-09-11 23:41:21,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:21,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:41:21,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427291129] [2020-09-11 23:41:21,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:21,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:41:21,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1276222425] [2020-09-11 23:41:21,968 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:21,971 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:21,981 INFO L274 McrAutomatonBuilder]: Finished intersection with 59 states and 108 transitions. [2020-09-11 23:41:21,981 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:22,015 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:41:22,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:41:22,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:22,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:41:22,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:41:22,016 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-09-11 23:41:22,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:22,027 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-09-11 23:41:22,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:41:22,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:41:22,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:22,027 INFO L225 Difference]: With dead ends: 35 [2020-09-11 23:41:22,028 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 23:41:22,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:41:22,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 23:41:22,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 23:41:22,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 23:41:22,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 23:41:22,029 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-11 23:41:22,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:22,029 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 23:41:22,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:41:22,030 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 23:41:22,030 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 23:41:22,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 23:41:22,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 11:41:22 BasicIcfg [2020-09-11 23:41:22,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 23:41:22,037 INFO L168 Benchmark]: Toolchain (without parser) took 5666.43 ms. Allocated memory was 138.4 MB in the beginning and 251.7 MB in the end (delta: 113.2 MB). Free memory was 100.7 MB in the beginning and 99.9 MB in the end (delta: 778.5 kB). Peak memory consumption was 114.0 MB. Max. memory is 7.1 GB. [2020-09-11 23:41:22,038 INFO L168 Benchmark]: CDTParser took 1.77 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-11 23:41:22,039 INFO L168 Benchmark]: CACSL2BoogieTranslator took 807.23 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 99.9 MB in the beginning and 157.7 MB in the end (delta: -57.9 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2020-09-11 23:41:22,040 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.48 ms. Allocated memory is still 199.8 MB. Free memory was 157.7 MB in the beginning and 154.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-09-11 23:41:22,041 INFO L168 Benchmark]: Boogie Preprocessor took 32.90 ms. Allocated memory is still 199.8 MB. Free memory was 154.7 MB in the beginning and 153.7 MB in the end (delta: 1000.0 kB). Peak memory consumption was 1000.0 kB. Max. memory is 7.1 GB. [2020-09-11 23:41:22,042 INFO L168 Benchmark]: RCFGBuilder took 472.22 ms. Allocated memory is still 199.8 MB. Free memory was 153.7 MB in the beginning and 131.3 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-09-11 23:41:22,043 INFO L168 Benchmark]: TraceAbstraction took 4284.16 ms. Allocated memory was 199.8 MB in the beginning and 251.7 MB in the end (delta: 51.9 MB). Free memory was 131.3 MB in the beginning and 99.9 MB in the end (delta: 31.3 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. [2020-09-11 23:41:22,048 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.77 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 807.23 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 99.9 MB in the beginning and 157.7 MB in the end (delta: -57.9 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.48 ms. Allocated memory is still 199.8 MB. Free memory was 157.7 MB in the beginning and 154.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.90 ms. Allocated memory is still 199.8 MB. Free memory was 154.7 MB in the beginning and 153.7 MB in the end (delta: 1000.0 kB). Peak memory consumption was 1000.0 kB. Max. memory is 7.1 GB. * RCFGBuilder took 472.22 ms. Allocated memory is still 199.8 MB. Free memory was 153.7 MB in the beginning and 131.3 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4284.16 ms. Allocated memory was 199.8 MB in the beginning and 251.7 MB in the end (delta: 51.9 MB). Free memory was 131.3 MB in the beginning and 99.9 MB in the end (delta: 31.3 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 650 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2190 CheckedPairsTotal, 58 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: 4.1s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 126 SDtfs, 105 SDslu, 172 SDs, 0 SdLazy, 99 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 206 GetRequests, 175 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 2644 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...