/usr/bin/java -Xmx16000000000 -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/safe005_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 18:31:13,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 18:31:13,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 18:31:13,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 18:31:13,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 18:31:13,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 18:31:13,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 18:31:13,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 18:31:13,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 18:31:13,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 18:31:13,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 18:31:13,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 18:31:13,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 18:31:13,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 18:31:13,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 18:31:13,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 18:31:13,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 18:31:13,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 18:31:13,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 18:31:13,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 18:31:13,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 18:31:13,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 18:31:13,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 18:31:13,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 18:31:13,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 18:31:13,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 18:31:13,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 18:31:13,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 18:31:13,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 18:31:13,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 18:31:13,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 18:31:13,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 18:31:13,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 18:31:13,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 18:31:13,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 18:31:13,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 18:31:13,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 18:31:13,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 18:31:13,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 18:31:13,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 18:31:13,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 18:31:13,204 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 18:31:13,236 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 18:31:13,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 18:31:13,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 18:31:13,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 18:31:13,241 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 18:31:13,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 18:31:13,241 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 18:31:13,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 18:31:13,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 18:31:13,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 18:31:13,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 18:31:13,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 18:31:13,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 18:31:13,242 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 18:31:13,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 18:31:13,243 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 18:31:13,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 18:31:13,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 18:31:13,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 18:31:13,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 18:31:13,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 18:31:13,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 18:31:13,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 18:31:13,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 18:31:13,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 18:31:13,249 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 18:31:13,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 18:31:13,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 18:31:13,249 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 18:31:13,249 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 18:31:13,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 18:31:13,584 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 18:31:13,588 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 18:31:13,589 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 18:31:13,590 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 18:31:13,590 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-10-15 18:31:13,651 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4633ba2d/a1d3b85afad9453281db28b0a83f645a/FLAG9c201a4f9 [2020-10-15 18:31:14,155 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 18:31:14,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-10-15 18:31:14,186 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4633ba2d/a1d3b85afad9453281db28b0a83f645a/FLAG9c201a4f9 [2020-10-15 18:31:14,471 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4633ba2d/a1d3b85afad9453281db28b0a83f645a [2020-10-15 18:31:14,479 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 18:31:14,481 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 18:31:14,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 18:31:14,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 18:31:14,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 18:31:14,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:31:14" (1/1) ... [2020-10-15 18:31:14,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4b4aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:31:14, skipping insertion in model container [2020-10-15 18:31:14,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:31:14" (1/1) ... [2020-10-15 18:31:14,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 18:31:14,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 18:31:15,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 18:31:15,176 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 18:31:15,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 18:31:15,292 INFO L208 MainTranslator]: Completed translation [2020-10-15 18:31:15,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:31:15 WrapperNode [2020-10-15 18:31:15,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 18:31:15,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 18:31:15,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 18:31:15,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 18:31:15,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:31:15" (1/1) ... [2020-10-15 18:31:15,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:31:15" (1/1) ... [2020-10-15 18:31:15,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 18:31:15,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 18:31:15,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 18:31:15,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 18:31:15,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:31:15" (1/1) ... [2020-10-15 18:31:15,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:31:15" (1/1) ... [2020-10-15 18:31:15,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:31:15" (1/1) ... [2020-10-15 18:31:15,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:31:15" (1/1) ... [2020-10-15 18:31:15,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:31:15" (1/1) ... [2020-10-15 18:31:15,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:31:15" (1/1) ... [2020-10-15 18:31:15,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:31:15" (1/1) ... [2020-10-15 18:31:15,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 18:31:15,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 18:31:15,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 18:31:15,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 18:31:15,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:31:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 18:31:15,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 18:31:15,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 18:31:15,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 18:31:15,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 18:31:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 18:31:15,450 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 18:31:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 18:31:15,451 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 18:31:15,452 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 18:31:15,452 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 18:31:15,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 18:31:15,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 18:31:15,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 18:31:15,455 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 18:31:15,808 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 18:31:15,809 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 18:31:15,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:31:15 BoogieIcfgContainer [2020-10-15 18:31:15,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 18:31:15,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 18:31:15,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 18:31:15,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 18:31:15,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 06:31:14" (1/3) ... [2020-10-15 18:31:15,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edff842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:31:15, skipping insertion in model container [2020-10-15 18:31:15,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:31:15" (2/3) ... [2020-10-15 18:31:15,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edff842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:31:15, skipping insertion in model container [2020-10-15 18:31:15,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:31:15" (3/3) ... [2020-10-15 18:31:15,820 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.oepc.i [2020-10-15 18:31:15,832 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 18:31:15,832 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 18:31:15,839 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 18:31:15,840 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 18:31:15,873 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,874 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,874 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,875 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,875 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,876 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,876 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,877 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,877 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,877 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,878 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,878 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,878 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,879 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,879 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,879 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,880 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,880 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,884 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,884 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,885 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,885 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,891 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,892 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,892 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,892 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,895 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,895 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,895 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,896 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:31:15,915 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 18:31:15,935 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 18:31:15,935 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 18:31:15,935 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 18:31:15,935 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 18:31:15,935 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 18:31:15,935 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 18:31:15,936 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 18:31:15,936 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 18:31:15,949 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 18:31:15,951 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-15 18:31:15,954 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-15 18:31:15,956 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-15 18:31:16,001 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-15 18:31:16,001 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 18:31:16,006 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. [2020-10-15 18:31:16,009 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-15 18:31:17,626 INFO L132 LiptonReduction]: Checked pairs total: 2936 [2020-10-15 18:31:17,626 INFO L134 LiptonReduction]: Total number of compositions: 59 [2020-10-15 18:31:17,633 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-15 18:31:17,661 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-15 18:31:17,663 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-15 18:31:17,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 18:31:17,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:31:17,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:31:17,673 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:31:17,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:31:17,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-10-15 18:31:17,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:31:17,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144091091] [2020-10-15 18:31:17,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:31:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:31:17,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:31:17,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144091091] [2020-10-15 18:31:17,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:31:17,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 18:31:17,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23676129] [2020-10-15 18:31:17,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:31:17,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:31:17,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:31:17,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:31:17,943 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-15 18:31:17,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:31:17,989 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-10-15 18:31:17,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:31:17,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-15 18:31:17,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:31:18,007 INFO L225 Difference]: With dead ends: 266 [2020-10-15 18:31:18,007 INFO L226 Difference]: Without dead ends: 202 [2020-10-15 18:31:18,009 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 [2020-10-15 18:31:18,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-15 18:31:18,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-15 18:31:18,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-15 18:31:18,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-15 18:31:18,070 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-10-15 18:31:18,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:31:18,071 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-15 18:31:18,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:31:18,072 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-15 18:31:18,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 18:31:18,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:31:18,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:31:18,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 18:31:18,074 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:31:18,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:31:18,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1603389483, now seen corresponding path program 1 times [2020-10-15 18:31:18,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:31:18,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8365105] [2020-10-15 18:31:18,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:31:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:31:18,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:31:18,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8365105] [2020-10-15 18:31:18,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:31:18,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:31:18,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699961843] [2020-10-15 18:31:18,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:31:18,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:31:18,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:31:18,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:31:18,148 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-10-15 18:31:18,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:31:18,181 INFO L93 Difference]: Finished difference Result 254 states and 666 transitions. [2020-10-15 18:31:18,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 18:31:18,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-15 18:31:18,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:31:18,184 INFO L225 Difference]: With dead ends: 254 [2020-10-15 18:31:18,184 INFO L226 Difference]: Without dead ends: 190 [2020-10-15 18:31:18,185 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 [2020-10-15 18:31:18,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-15 18:31:18,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-10-15 18:31:18,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-15 18:31:18,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 502 transitions. [2020-10-15 18:31:18,203 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 502 transitions. Word has length 10 [2020-10-15 18:31:18,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:31:18,203 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 502 transitions. [2020-10-15 18:31:18,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:31:18,204 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 502 transitions. [2020-10-15 18:31:18,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 18:31:18,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:31:18,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:31:18,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 18:31:18,206 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:31:18,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:31:18,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1533986257, now seen corresponding path program 1 times [2020-10-15 18:31:18,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:31:18,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332736987] [2020-10-15 18:31:18,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:31:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:31:18,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:31:18,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332736987] [2020-10-15 18:31:18,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:31:18,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:31:18,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015453549] [2020-10-15 18:31:18,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:31:18,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:31:18,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:31:18,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:31:18,282 INFO L87 Difference]: Start difference. First operand 190 states and 502 transitions. Second operand 4 states. [2020-10-15 18:31:18,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:31:18,310 INFO L93 Difference]: Finished difference Result 286 states and 722 transitions. [2020-10-15 18:31:18,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:31:18,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-15 18:31:18,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:31:18,312 INFO L225 Difference]: With dead ends: 286 [2020-10-15 18:31:18,312 INFO L226 Difference]: Without dead ends: 178 [2020-10-15 18:31:18,313 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 [2020-10-15 18:31:18,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-15 18:31:18,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 154. [2020-10-15 18:31:18,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-15 18:31:18,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 376 transitions. [2020-10-15 18:31:18,328 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 376 transitions. Word has length 11 [2020-10-15 18:31:18,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:31:18,328 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 376 transitions. [2020-10-15 18:31:18,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:31:18,329 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-10-15 18:31:18,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 18:31:18,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:31:18,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:31:18,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 18:31:18,335 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:31:18,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:31:18,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1026948662, now seen corresponding path program 1 times [2020-10-15 18:31:18,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:31:18,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366887003] [2020-10-15 18:31:18,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:31:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:31:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:31:18,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366887003] [2020-10-15 18:31:18,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:31:18,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:31:18,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155486907] [2020-10-15 18:31:18,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:31:18,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:31:18,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:31:18,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:31:18,371 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 3 states. [2020-10-15 18:31:18,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:31:18,384 INFO L93 Difference]: Finished difference Result 174 states and 416 transitions. [2020-10-15 18:31:18,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:31:18,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-15 18:31:18,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:31:18,386 INFO L225 Difference]: With dead ends: 174 [2020-10-15 18:31:18,386 INFO L226 Difference]: Without dead ends: 72 [2020-10-15 18:31:18,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:31:18,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-15 18:31:18,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-15 18:31:18,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-15 18:31:18,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 154 transitions. [2020-10-15 18:31:18,392 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 154 transitions. Word has length 12 [2020-10-15 18:31:18,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:31:18,392 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 154 transitions. [2020-10-15 18:31:18,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:31:18,393 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 154 transitions. [2020-10-15 18:31:18,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 18:31:18,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:31:18,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:31:18,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 18:31:18,394 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:31:18,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:31:18,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1770638686, now seen corresponding path program 1 times [2020-10-15 18:31:18,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:31:18,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126243332] [2020-10-15 18:31:18,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:31:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:31:18,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:31:18,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126243332] [2020-10-15 18:31:18,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:31:18,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:31:18,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70837603] [2020-10-15 18:31:18,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:31:18,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:31:18,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:31:18,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:31:18,445 INFO L87 Difference]: Start difference. First operand 72 states and 154 transitions. Second operand 4 states. [2020-10-15 18:31:18,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:31:18,479 INFO L93 Difference]: Finished difference Result 85 states and 167 transitions. [2020-10-15 18:31:18,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:31:18,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-15 18:31:18,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:31:18,481 INFO L225 Difference]: With dead ends: 85 [2020-10-15 18:31:18,481 INFO L226 Difference]: Without dead ends: 61 [2020-10-15 18:31:18,481 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 [2020-10-15 18:31:18,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-15 18:31:18,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-15 18:31:18,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-15 18:31:18,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 118 transitions. [2020-10-15 18:31:18,487 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 118 transitions. Word has length 13 [2020-10-15 18:31:18,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:31:18,487 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 118 transitions. [2020-10-15 18:31:18,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:31:18,488 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 118 transitions. [2020-10-15 18:31:18,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 18:31:18,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:31:18,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:31:18,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 18:31:18,489 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:31:18,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:31:18,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1873051802, now seen corresponding path program 1 times [2020-10-15 18:31:18,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:31:18,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931976830] [2020-10-15 18:31:18,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:31:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:31:18,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:31:18,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931976830] [2020-10-15 18:31:18,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:31:18,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:31:18,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129283466] [2020-10-15 18:31:18,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 18:31:18,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:31:18,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 18:31:18,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:31:18,538 INFO L87 Difference]: Start difference. First operand 61 states and 118 transitions. Second operand 5 states. [2020-10-15 18:31:18,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:31:18,575 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-10-15 18:31:18,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 18:31:18,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-15 18:31:18,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:31:18,576 INFO L225 Difference]: With dead ends: 62 [2020-10-15 18:31:18,576 INFO L226 Difference]: Without dead ends: 47 [2020-10-15 18:31:18,577 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 [2020-10-15 18:31:18,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-15 18:31:18,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-15 18:31:18,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-15 18:31:18,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-10-15 18:31:18,580 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-10-15 18:31:18,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:31:18,581 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-10-15 18:31:18,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 18:31:18,581 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-10-15 18:31:18,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 18:31:18,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:31:18,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:31:18,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 18:31:18,582 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:31:18,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:31:18,583 INFO L82 PathProgramCache]: Analyzing trace with hash 877737129, now seen corresponding path program 1 times [2020-10-15 18:31:18,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:31:18,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650576184] [2020-10-15 18:31:18,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:31:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:31:18,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:31:18,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650576184] [2020-10-15 18:31:18,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:31:18,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 18:31:18,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129577481] [2020-10-15 18:31:18,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 18:31:18,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:31:18,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 18:31:18,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 18:31:18,636 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-10-15 18:31:18,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:31:18,682 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2020-10-15 18:31:18,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 18:31:18,683 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-15 18:31:18,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:31:18,684 INFO L225 Difference]: With dead ends: 44 [2020-10-15 18:31:18,684 INFO L226 Difference]: Without dead ends: 38 [2020-10-15 18:31:18,684 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 [2020-10-15 18:31:18,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-15 18:31:18,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-15 18:31:18,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-15 18:31:18,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2020-10-15 18:31:18,689 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 15 [2020-10-15 18:31:18,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:31:18,690 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2020-10-15 18:31:18,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 18:31:18,690 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2020-10-15 18:31:18,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 18:31:18,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:31:18,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:31:18,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 18:31:18,691 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:31:18,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:31:18,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 1 times [2020-10-15 18:31:18,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:31:18,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267991779] [2020-10-15 18:31:18,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:31:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:31:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:31:18,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267991779] [2020-10-15 18:31:18,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:31:18,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:31:18,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384967309] [2020-10-15 18:31:18,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:31:18,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:31:18,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:31:18,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:31:18,735 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand 4 states. [2020-10-15 18:31:18,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:31:18,745 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2020-10-15 18:31:18,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 18:31:18,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-15 18:31:18,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:31:18,746 INFO L225 Difference]: With dead ends: 37 [2020-10-15 18:31:18,746 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 18:31:18,746 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 [2020-10-15 18:31:18,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 18:31:18,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 18:31:18,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 18:31:18,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 18:31:18,747 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-15 18:31:18,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:31:18,748 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 18:31:18,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:31:18,748 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 18:31:18,748 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 18:31:18,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 18:31:18,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 06:31:18 BasicIcfg [2020-10-15 18:31:18,752 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 18:31:18,755 INFO L168 Benchmark]: Toolchain (without parser) took 4273.30 ms. Allocated memory was 252.2 MB in the beginning and 369.6 MB in the end (delta: 117.4 MB). Free memory was 207.3 MB in the beginning and 246.3 MB in the end (delta: -39.0 MB). Peak memory consumption was 78.5 MB. Max. memory is 14.2 GB. [2020-10-15 18:31:18,756 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 18:31:18,757 INFO L168 Benchmark]: CACSL2BoogieTranslator took 811.04 ms. Allocated memory was 252.2 MB in the beginning and 314.6 MB in the end (delta: 62.4 MB). Free memory was 207.3 MB in the beginning and 265.5 MB in the end (delta: -58.2 MB). Peak memory consumption was 26.7 MB. Max. memory is 14.2 GB. [2020-10-15 18:31:18,758 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.51 ms. Allocated memory is still 314.6 MB. Free memory was 265.5 MB in the beginning and 263.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 18:31:18,759 INFO L168 Benchmark]: Boogie Preprocessor took 26.41 ms. Allocated memory is still 314.6 MB. Free memory was 263.0 MB in the beginning and 260.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 18:31:18,760 INFO L168 Benchmark]: RCFGBuilder took 440.86 ms. Allocated memory is still 314.6 MB. Free memory was 260.4 MB in the beginning and 238.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-15 18:31:18,761 INFO L168 Benchmark]: TraceAbstraction took 2939.84 ms. Allocated memory was 314.6 MB in the beginning and 369.6 MB in the end (delta: 55.1 MB). Free memory was 238.6 MB in the beginning and 246.3 MB in the end (delta: -7.7 MB). Peak memory consumption was 47.4 MB. Max. memory is 14.2 GB. [2020-10-15 18:31:18,768 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 811.04 ms. Allocated memory was 252.2 MB in the beginning and 314.6 MB in the end (delta: 62.4 MB). Free memory was 207.3 MB in the beginning and 265.5 MB in the end (delta: -58.2 MB). Peak memory consumption was 26.7 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 49.51 ms. Allocated memory is still 314.6 MB. Free memory was 265.5 MB in the beginning and 263.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.41 ms. Allocated memory is still 314.6 MB. Free memory was 263.0 MB in the beginning and 260.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 440.86 ms. Allocated memory is still 314.6 MB. Free memory was 260.4 MB in the beginning and 238.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2939.84 ms. Allocated memory was 314.6 MB in the beginning and 369.6 MB in the end (delta: 55.1 MB). Free memory was 238.6 MB in the beginning and 246.3 MB in the end (delta: -7.7 MB). Peak memory consumption was 47.4 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 870 VarBasedMoverChecksPositive, 44 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 62 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2936 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: 2.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 157 SDtfs, 123 SDslu, 177 SDs, 0 SdLazy, 115 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 2940 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...