/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:20:57,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:20:57,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:20:58,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:20:58,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:20:58,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:20:58,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:20:58,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:20:58,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:20:58,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:20:58,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:20:58,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:20:58,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:20:58,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:20:58,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:20:58,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:20:58,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:20:58,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:20:58,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:20:58,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:20:58,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:20:58,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:20:58,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:20:58,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:20:58,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 11:20:58,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 11:20:58,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 11:20:58,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 11:20:58,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 11:20:58,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 11:20:58,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:20:58,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:20:58,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:20:58,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:20:58,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:20:58,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:20:58,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:20:58,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:20:58,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:20:58,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:20:58,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:20:58,055 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 11:20:58,078 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:20:58,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:20:58,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:20:58,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:20:58,080 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:20:58,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:20:58,081 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:20:58,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:20:58,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:20:58,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:20:58,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:20:58,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:20:58,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:20:58,082 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:20:58,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:20:58,083 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:20:58,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:20:58,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:20:58,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:20:58,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:20:58,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:20:58,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:20:58,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:20:58,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:20:58,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:20:58,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:20:58,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:20:58,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:20:58,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:20:58,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:20:58,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:20:58,464 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:20:58,468 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:20:58,471 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:20:58,472 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:20:58,473 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i [2020-10-16 11:20:58,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0577a211/9e810edf7f7c4e49bd0b9e5e3c3fcb0b/FLAG6366b4fc7 [2020-10-16 11:20:59,125 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:20:59,126 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i [2020-10-16 11:20:59,143 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0577a211/9e810edf7f7c4e49bd0b9e5e3c3fcb0b/FLAG6366b4fc7 [2020-10-16 11:20:59,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0577a211/9e810edf7f7c4e49bd0b9e5e3c3fcb0b [2020-10-16 11:20:59,406 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:20:59,407 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:20:59,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:20:59,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:20:59,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:20:59,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:20:59" (1/1) ... [2020-10-16 11:20:59,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@529da74c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:59, skipping insertion in model container [2020-10-16 11:20:59,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:20:59" (1/1) ... [2020-10-16 11:20:59,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:20:59,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:21:00,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:21:00,080 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:21:00,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:21:00,224 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:21:00,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:00 WrapperNode [2020-10-16 11:21:00,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:21:00,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:21:00,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:21:00,227 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:21:00,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:00" (1/1) ... [2020-10-16 11:21:00,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:00" (1/1) ... [2020-10-16 11:21:00,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:21:00,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:21:00,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:21:00,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:21:00,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:00" (1/1) ... [2020-10-16 11:21:00,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:00" (1/1) ... [2020-10-16 11:21:00,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:00" (1/1) ... [2020-10-16 11:21:00,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:00" (1/1) ... [2020-10-16 11:21:00,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:00" (1/1) ... [2020-10-16 11:21:00,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:00" (1/1) ... [2020-10-16 11:21:00,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:00" (1/1) ... [2020-10-16 11:21:00,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:21:00,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:21:00,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:21:00,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:21:00,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:21:00,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:21:00,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 11:21:00,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:21:00,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:21:00,378 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 11:21:00,379 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 11:21:00,379 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 11:21:00,379 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 11:21:00,379 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 11:21:00,379 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 11:21:00,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 11:21:00,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:21:00,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:21:00,382 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:21:00,781 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:21:00,781 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 11:21:00,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:21:00 BoogieIcfgContainer [2020-10-16 11:21:00,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:21:00,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:21:00,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:21:00,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:21:00,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:20:59" (1/3) ... [2020-10-16 11:21:00,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e171c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:21:00, skipping insertion in model container [2020-10-16 11:21:00,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:00" (2/3) ... [2020-10-16 11:21:00,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e171c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:21:00, skipping insertion in model container [2020-10-16 11:21:00,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:21:00" (3/3) ... [2020-10-16 11:21:00,794 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_tso.opt.i [2020-10-16 11:21:00,807 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:21:00,807 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:21:00,816 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:21:00,817 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:21:00,844 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,844 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,844 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,845 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,846 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,846 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,847 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,847 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,847 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,848 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,848 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,848 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,849 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,849 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,849 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,849 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,850 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,850 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,854 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,855 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,855 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,855 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,864 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,864 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,865 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,865 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,868 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,868 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,868 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,869 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:00,870 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:21:00,885 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 11:21:00,908 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:21:00,909 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:21:00,909 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:21:00,909 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:21:00,909 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:21:00,909 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:21:00,910 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:21:00,910 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:21:00,924 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:21:00,927 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 11:21:00,931 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 11:21:00,933 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 11:21:00,979 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 11:21:00,979 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:21:00,985 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. [2020-10-16 11:21:00,988 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 11:21:02,666 INFO L132 LiptonReduction]: Checked pairs total: 2936 [2020-10-16 11:21:02,666 INFO L134 LiptonReduction]: Total number of compositions: 59 [2020-10-16 11:21:02,675 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-16 11:21:02,722 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 11:21:02,724 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 11:21:02,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:21:02,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:21:02,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:21:02,758 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:21:02,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:21:02,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-10-16 11:21:02,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:21:02,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695757268] [2020-10-16 11:21:02,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:21:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:21:03,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:21:03,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695757268] [2020-10-16 11:21:03,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:21:03,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:21:03,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779120627] [2020-10-16 11:21:03,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:21:03,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:21:03,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:21:03,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:21:03,142 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 11:21:03,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:21:03,197 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-16 11:21:03,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:21:03,199 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 11:21:03,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:21:03,219 INFO L225 Difference]: With dead ends: 282 [2020-10-16 11:21:03,219 INFO L226 Difference]: Without dead ends: 218 [2020-10-16 11:21:03,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:21:03,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-16 11:21:03,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-16 11:21:03,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-16 11:21:03,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-16 11:21:03,319 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-16 11:21:03,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:21:03,320 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-16 11:21:03,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:21:03,321 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-16 11:21:03,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:21:03,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:21:03,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:21:03,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:21:03,326 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:21:03,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:21:03,326 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-10-16 11:21:03,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:21:03,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526149854] [2020-10-16 11:21:03,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:21:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:21:03,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:21:03,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526149854] [2020-10-16 11:21:03,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:21:03,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:21:03,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455251862] [2020-10-16 11:21:03,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:21:03,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:21:03,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:21:03,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:21:03,436 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-10-16 11:21:03,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:21:03,481 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-10-16 11:21:03,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:21:03,484 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 11:21:03,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:21:03,488 INFO L225 Difference]: With dead ends: 202 [2020-10-16 11:21:03,489 INFO L226 Difference]: Without dead ends: 202 [2020-10-16 11:21:03,491 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 [2020-10-16 11:21:03,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-16 11:21:03,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-16 11:21:03,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-16 11:21:03,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-16 11:21:03,521 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-10-16 11:21:03,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:21:03,521 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-16 11:21:03,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:21:03,521 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-16 11:21:03,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 11:21:03,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:21:03,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:21:03,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:21:03,524 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:21:03,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:21:03,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1603398907, now seen corresponding path program 1 times [2020-10-16 11:21:03,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:21:03,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432787112] [2020-10-16 11:21:03,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:21:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:21:03,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:21:03,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432787112] [2020-10-16 11:21:03,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:21:03,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:21:03,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488852355] [2020-10-16 11:21:03,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:21:03,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:21:03,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:21:03,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:21:03,572 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-16 11:21:03,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:21:03,580 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-10-16 11:21:03,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:21:03,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 11:21:03,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:21:03,582 INFO L225 Difference]: With dead ends: 194 [2020-10-16 11:21:03,583 INFO L226 Difference]: Without dead ends: 194 [2020-10-16 11:21:03,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:21:03,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-16 11:21:03,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-10-16 11:21:03,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-16 11:21:03,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-10-16 11:21:03,597 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-10-16 11:21:03,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:21:03,597 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-10-16 11:21:03,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:21:03,597 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-10-16 11:21:03,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:21:03,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:21:03,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:21:03,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:21:03,600 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:21:03,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:21:03,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-10-16 11:21:03,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:21:03,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103425695] [2020-10-16 11:21:03,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:21:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:21:03,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:21:03,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103425695] [2020-10-16 11:21:03,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:21:03,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:21:03,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013105548] [2020-10-16 11:21:03,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:21:03,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:21:03,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:21:03,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:21:03,681 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-10-16 11:21:03,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:21:03,723 INFO L93 Difference]: Finished difference Result 225 states and 557 transitions. [2020-10-16 11:21:03,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:21:03,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 11:21:03,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:21:03,726 INFO L225 Difference]: With dead ends: 225 [2020-10-16 11:21:03,726 INFO L226 Difference]: Without dead ends: 161 [2020-10-16 11:21:03,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:21:03,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-16 11:21:03,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-10-16 11:21:03,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-16 11:21:03,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 386 transitions. [2020-10-16 11:21:03,736 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 386 transitions. Word has length 11 [2020-10-16 11:21:03,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:21:03,736 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 386 transitions. [2020-10-16 11:21:03,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:21:03,736 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 386 transitions. [2020-10-16 11:21:03,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 11:21:03,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:21:03,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:21:03,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:21:03,739 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:21:03,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:21:03,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1941611660, now seen corresponding path program 1 times [2020-10-16 11:21:03,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:21:03,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200477567] [2020-10-16 11:21:03,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:21:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:21:03,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:21:03,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200477567] [2020-10-16 11:21:03,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:21:03,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:21:03,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891461217] [2020-10-16 11:21:03,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:21:03,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:21:03,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:21:03,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:21:03,793 INFO L87 Difference]: Start difference. First operand 161 states and 386 transitions. Second operand 5 states. [2020-10-16 11:21:03,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:21:03,834 INFO L93 Difference]: Finished difference Result 160 states and 362 transitions. [2020-10-16 11:21:03,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:21:03,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-16 11:21:03,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:21:03,841 INFO L225 Difference]: With dead ends: 160 [2020-10-16 11:21:03,841 INFO L226 Difference]: Without dead ends: 123 [2020-10-16 11:21:03,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:21:03,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-16 11:21:03,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-10-16 11:21:03,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-16 11:21:03,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-10-16 11:21:03,847 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 12 [2020-10-16 11:21:03,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:21:03,847 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-10-16 11:21:03,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:21:03,848 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-10-16 11:21:03,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 11:21:03,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:21:03,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:21:03,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:21:03,850 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:21:03,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:21:03,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-10-16 11:21:03,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:21:03,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029303470] [2020-10-16 11:21:03,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:21:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:21:03,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:21:03,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029303470] [2020-10-16 11:21:03,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:21:03,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 11:21:03,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103147657] [2020-10-16 11:21:03,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 11:21:03,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:21:03,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 11:21:03,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:21:03,932 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 6 states. [2020-10-16 11:21:03,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:21:03,994 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-10-16 11:21:03,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:21:03,995 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-16 11:21:03,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:21:03,996 INFO L225 Difference]: With dead ends: 118 [2020-10-16 11:21:03,996 INFO L226 Difference]: Without dead ends: 108 [2020-10-16 11:21:03,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:21:03,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-16 11:21:04,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-16 11:21:04,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-16 11:21:04,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-10-16 11:21:04,001 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-10-16 11:21:04,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:21:04,002 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-10-16 11:21:04,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 11:21:04,002 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-10-16 11:21:04,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:21:04,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:21:04,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:21:04,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:21:04,008 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:21:04,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:21:04,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-10-16 11:21:04,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:21:04,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690344962] [2020-10-16 11:21:04,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:21:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:21:04,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:21:04,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690344962] [2020-10-16 11:21:04,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:21:04,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:21:04,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952487220] [2020-10-16 11:21:04,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:21:04,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:21:04,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:21:04,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:21:04,106 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-10-16 11:21:04,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:21:04,124 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-10-16 11:21:04,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:21:04,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 11:21:04,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:21:04,125 INFO L225 Difference]: With dead ends: 133 [2020-10-16 11:21:04,125 INFO L226 Difference]: Without dead ends: 54 [2020-10-16 11:21:04,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:21:04,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-16 11:21:04,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-16 11:21:04,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-16 11:21:04,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-10-16 11:21:04,129 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-10-16 11:21:04,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:21:04,129 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-10-16 11:21:04,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:21:04,129 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-10-16 11:21:04,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:21:04,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:21:04,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:21:04,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 11:21:04,131 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:21:04,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:21:04,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 2 times [2020-10-16 11:21:04,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:21:04,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180181403] [2020-10-16 11:21:04,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:21:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:21:04,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:21:04,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180181403] [2020-10-16 11:21:04,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:21:04,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:21:04,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683330045] [2020-10-16 11:21:04,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:21:04,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:21:04,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:21:04,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:21:04,169 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-10-16 11:21:04,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:21:04,187 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2020-10-16 11:21:04,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:21:04,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 11:21:04,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:21:04,189 INFO L225 Difference]: With dead ends: 63 [2020-10-16 11:21:04,189 INFO L226 Difference]: Without dead ends: 38 [2020-10-16 11:21:04,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:21:04,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-16 11:21:04,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-16 11:21:04,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-16 11:21:04,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-10-16 11:21:04,192 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 17 [2020-10-16 11:21:04,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:21:04,192 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-10-16 11:21:04,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:21:04,193 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-10-16 11:21:04,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:21:04,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:21:04,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:21:04,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 11:21:04,194 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:21:04,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:21:04,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1965606506, now seen corresponding path program 3 times [2020-10-16 11:21:04,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:21:04,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763420309] [2020-10-16 11:21:04,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:21:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:21:04,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:21:04,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763420309] [2020-10-16 11:21:04,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:21:04,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:21:04,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211372365] [2020-10-16 11:21:04,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:21:04,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:21:04,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:21:04,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:21:04,230 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-10-16 11:21:04,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:21:04,251 INFO L93 Difference]: Finished difference Result 56 states and 90 transitions. [2020-10-16 11:21:04,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:21:04,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 11:21:04,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:21:04,252 INFO L225 Difference]: With dead ends: 56 [2020-10-16 11:21:04,252 INFO L226 Difference]: Without dead ends: 35 [2020-10-16 11:21:04,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:21:04,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-16 11:21:04,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-16 11:21:04,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-16 11:21:04,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-10-16 11:21:04,255 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-10-16 11:21:04,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:21:04,255 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-10-16 11:21:04,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:21:04,255 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-10-16 11:21:04,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:21:04,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:21:04,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:21:04,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 11:21:04,256 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:21:04,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:21:04,257 INFO L82 PathProgramCache]: Analyzing trace with hash -828702424, now seen corresponding path program 4 times [2020-10-16 11:21:04,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:21:04,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206976615] [2020-10-16 11:21:04,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:21:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:21:04,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:21:04,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206976615] [2020-10-16 11:21:04,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:21:04,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:21:04,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673548982] [2020-10-16 11:21:04,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:21:04,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:21:04,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:21:04,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:21:04,291 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-10-16 11:21:04,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:21:04,304 INFO L93 Difference]: Finished difference Result 34 states and 55 transitions. [2020-10-16 11:21:04,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:21:04,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 11:21:04,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:21:04,305 INFO L225 Difference]: With dead ends: 34 [2020-10-16 11:21:04,305 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 11:21:04,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:21:04,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 11:21:04,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 11:21:04,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 11:21:04,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 11:21:04,307 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 11:21:04,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:21:04,307 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 11:21:04,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:21:04,307 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 11:21:04,308 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 11:21:04,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 11:21:04,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:21:04 BasicIcfg [2020-10-16 11:21:04,312 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:21:04,315 INFO L168 Benchmark]: Toolchain (without parser) took 4906.42 ms. Allocated memory was 138.9 MB in the beginning and 251.1 MB in the end (delta: 112.2 MB). Free memory was 100.7 MB in the beginning and 161.8 MB in the end (delta: -61.1 MB). Peak memory consumption was 51.1 MB. Max. memory is 7.1 GB. [2020-10-16 11:21:04,315 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 11:21:04,316 INFO L168 Benchmark]: CACSL2BoogieTranslator took 817.51 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 100.2 MB in the beginning and 158.5 MB in the end (delta: -58.2 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:21:04,317 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.39 ms. Allocated memory is still 200.8 MB. Free memory was 158.5 MB in the beginning and 156.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-16 11:21:04,318 INFO L168 Benchmark]: Boogie Preprocessor took 27.49 ms. Allocated memory is still 200.8 MB. Free memory was 156.4 MB in the beginning and 155.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-16 11:21:04,319 INFO L168 Benchmark]: RCFGBuilder took 481.20 ms. Allocated memory is still 200.8 MB. Free memory was 155.0 MB in the beginning and 132.0 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:21:04,320 INFO L168 Benchmark]: TraceAbstraction took 3526.02 ms. Allocated memory was 200.8 MB in the beginning and 251.1 MB in the end (delta: 50.3 MB). Free memory was 132.0 MB in the beginning and 161.8 MB in the end (delta: -29.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-10-16 11:21:04,324 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 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 817.51 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 100.2 MB in the beginning and 158.5 MB in the end (delta: -58.2 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.39 ms. Allocated memory is still 200.8 MB. Free memory was 158.5 MB in the beginning and 156.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.49 ms. Allocated memory is still 200.8 MB. Free memory was 156.4 MB in the beginning and 155.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 481.20 ms. Allocated memory is still 200.8 MB. Free memory was 155.0 MB in the beginning and 132.0 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3526.02 ms. Allocated memory was 200.8 MB in the beginning and 251.1 MB in the end (delta: 50.3 MB). Free memory was 132.0 MB in the beginning and 161.8 MB in the end (delta: -29.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 851 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 54 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 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: 3.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 205 SDtfs, 151 SDslu, 247 SDs, 0 SdLazy, 129 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 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: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 4232 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...