/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/safe002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 18:30:07,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 18:30:07,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 18:30:07,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 18:30:07,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 18:30:07,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 18:30:07,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 18:30:07,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 18:30:07,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 18:30:07,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 18:30:07,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 18:30:07,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 18:30:07,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 18:30:07,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 18:30:07,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 18:30:07,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 18:30:07,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 18:30:07,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 18:30:07,507 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 18:30:07,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 18:30:07,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 18:30:07,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 18:30:07,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 18:30:07,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 18:30:07,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 18:30:07,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 18:30:07,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 18:30:07,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 18:30:07,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 18:30:07,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 18:30:07,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 18:30:07,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 18:30:07,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 18:30:07,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 18:30:07,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 18:30:07,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 18:30:07,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 18:30:07,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 18:30:07,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 18:30:07,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 18:30:07,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 18:30:07,532 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 18:30:07,579 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 18:30:07,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 18:30:07,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 18:30:07,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 18:30:07,582 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 18:30:07,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 18:30:07,582 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 18:30:07,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 18:30:07,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 18:30:07,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 18:30:07,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 18:30:07,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 18:30:07,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 18:30:07,585 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 18:30:07,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 18:30:07,585 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 18:30:07,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 18:30:07,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 18:30:07,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 18:30:07,586 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 18:30:07,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 18:30:07,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 18:30:07,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 18:30:07,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 18:30:07,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 18:30:07,587 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 18:30:07,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 18:30:07,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 18:30:07,588 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 18:30:07,588 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 18:30:07,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 18:30:07,914 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 18:30:07,917 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 18:30:07,919 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 18:30:07,920 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 18:30:07,921 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2020-10-15 18:30:07,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a03a1d0e/f38c8605e882432a9ad4d2b07a6e0255/FLAG7beeae9f9 [2020-10-15 18:30:08,492 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 18:30:08,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2020-10-15 18:30:08,506 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a03a1d0e/f38c8605e882432a9ad4d2b07a6e0255/FLAG7beeae9f9 [2020-10-15 18:30:08,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a03a1d0e/f38c8605e882432a9ad4d2b07a6e0255 [2020-10-15 18:30:08,967 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 18:30:08,969 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 18:30:08,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 18:30:08,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 18:30:08,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 18:30:08,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:30:08" (1/1) ... [2020-10-15 18:30:08,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d6ec508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:08, skipping insertion in model container [2020-10-15 18:30:08,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:30:08" (1/1) ... [2020-10-15 18:30:08,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 18:30:09,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 18:30:09,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 18:30:09,695 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 18:30:09,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 18:30:09,845 INFO L208 MainTranslator]: Completed translation [2020-10-15 18:30:09,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:09 WrapperNode [2020-10-15 18:30:09,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 18:30:09,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 18:30:09,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 18:30:09,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 18:30:09,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:09" (1/1) ... [2020-10-15 18:30:09,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:09" (1/1) ... [2020-10-15 18:30:09,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 18:30:09,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 18:30:09,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 18:30:09,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 18:30:09,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:09" (1/1) ... [2020-10-15 18:30:09,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:09" (1/1) ... [2020-10-15 18:30:09,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:09" (1/1) ... [2020-10-15 18:30:09,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:09" (1/1) ... [2020-10-15 18:30:09,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:09" (1/1) ... [2020-10-15 18:30:09,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:09" (1/1) ... [2020-10-15 18:30:09,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:09" (1/1) ... [2020-10-15 18:30:09,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 18:30:09,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 18:30:09,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 18:30:09,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 18:30:09,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:09" (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 18:30:10,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 18:30:10,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 18:30:10,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 18:30:10,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 18:30:10,002 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 18:30:10,002 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 18:30:10,003 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 18:30:10,003 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 18:30:10,003 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 18:30:10,003 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 18:30:10,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 18:30:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 18:30:10,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 18:30:10,006 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 18:30:10,355 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 18:30:10,355 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 18:30:10,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:30:10 BoogieIcfgContainer [2020-10-15 18:30:10,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 18:30:10,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 18:30:10,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 18:30:10,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 18:30:10,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 06:30:08" (1/3) ... [2020-10-15 18:30:10,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1767877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:30:10, skipping insertion in model container [2020-10-15 18:30:10,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:09" (2/3) ... [2020-10-15 18:30:10,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1767877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:30:10, skipping insertion in model container [2020-10-15 18:30:10,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:30:10" (3/3) ... [2020-10-15 18:30:10,367 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.opt.i [2020-10-15 18:30:10,376 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 18:30:10,377 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 18:30:10,383 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 18:30:10,384 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 18:30:10,414 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,414 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,414 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,415 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,415 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,415 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,416 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,416 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,416 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,416 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,417 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,417 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,418 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,418 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,418 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,418 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,419 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,419 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,426 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,426 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,426 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,427 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,437 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,437 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,438 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,438 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,440 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,441 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,441 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,441 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:10,457 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 18:30:10,480 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 18:30:10,480 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 18:30:10,481 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 18:30:10,481 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 18:30:10,481 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 18:30:10,481 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 18:30:10,481 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 18:30:10,481 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 18:30:10,496 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 18:30:10,499 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-15 18:30:10,502 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-15 18:30:10,504 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-15 18:30:10,550 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-15 18:30:10,550 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 18:30:10,559 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-15 18:30:10,562 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-15 18:30:12,198 INFO L132 LiptonReduction]: Checked pairs total: 2810 [2020-10-15 18:30:12,198 INFO L134 LiptonReduction]: Total number of compositions: 60 [2020-10-15 18:30:12,206 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-15 18:30:12,235 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-15 18:30:12,237 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-15 18:30:12,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 18:30:12,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:30:12,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:30:12,261 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:30:12,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:30:12,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-10-15 18:30:12,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:30:12,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065489053] [2020-10-15 18:30:12,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:30:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:30:12,507 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 18:30:12,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065489053] [2020-10-15 18:30:12,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:30:12,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 18:30:12,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190915089] [2020-10-15 18:30:12,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:30:12,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:30:12,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:30:12,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:30:12,534 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-15 18:30:12,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:30:12,583 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-15 18:30:12,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:30:12,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-15 18:30:12,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:30:12,601 INFO L225 Difference]: With dead ends: 282 [2020-10-15 18:30:12,602 INFO L226 Difference]: Without dead ends: 218 [2020-10-15 18:30:12,603 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 18:30:12,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-15 18:30:12,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-15 18:30:12,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-15 18:30:12,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-15 18:30:12,674 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-15 18:30:12,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:30:12,675 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-15 18:30:12,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:30:12,676 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-15 18:30:12,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 18:30:12,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:30:12,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:30:12,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 18:30:12,678 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:30:12,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:30:12,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-10-15 18:30:12,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:30:12,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200582401] [2020-10-15 18:30:12,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:30:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:30:12,805 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 18:30:12,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200582401] [2020-10-15 18:30:12,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:30:12,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:30:12,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256885731] [2020-10-15 18:30:12,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:30:12,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:30:12,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:30:12,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:30:12,809 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-15 18:30:12,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:30:12,845 INFO L93 Difference]: Finished difference Result 290 states and 762 transitions. [2020-10-15 18:30:12,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 18:30:12,846 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-15 18:30:12,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:30:12,848 INFO L225 Difference]: With dead ends: 290 [2020-10-15 18:30:12,849 INFO L226 Difference]: Without dead ends: 164 [2020-10-15 18:30:12,850 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 18:30:12,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-15 18:30:12,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-10-15 18:30:12,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-15 18:30:12,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 424 transitions. [2020-10-15 18:30:12,868 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 424 transitions. Word has length 9 [2020-10-15 18:30:12,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:30:12,868 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 424 transitions. [2020-10-15 18:30:12,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:30:12,869 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 424 transitions. [2020-10-15 18:30:12,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 18:30:12,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:30:12,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:30:12,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 18:30:12,871 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:30:12,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:30:12,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1379691760, now seen corresponding path program 1 times [2020-10-15 18:30:12,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:30:12,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635080153] [2020-10-15 18:30:12,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:30:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:30:12,949 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 18:30:12,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635080153] [2020-10-15 18:30:12,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:30:12,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:30:12,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661354346] [2020-10-15 18:30:12,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:30:12,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:30:12,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:30:12,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:30:12,951 INFO L87 Difference]: Start difference. First operand 164 states and 424 transitions. Second operand 4 states. [2020-10-15 18:30:12,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:30:12,983 INFO L93 Difference]: Finished difference Result 244 states and 582 transitions. [2020-10-15 18:30:12,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:30:12,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-15 18:30:12,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:30:12,985 INFO L225 Difference]: With dead ends: 244 [2020-10-15 18:30:12,985 INFO L226 Difference]: Without dead ends: 128 [2020-10-15 18:30:12,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:30:12,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-15 18:30:12,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 116. [2020-10-15 18:30:12,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-15 18:30:12,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 268 transitions. [2020-10-15 18:30:12,997 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 268 transitions. Word has length 11 [2020-10-15 18:30:12,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:30:12,998 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 268 transitions. [2020-10-15 18:30:12,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:30:12,998 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 268 transitions. [2020-10-15 18:30:12,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 18:30:12,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:30:12,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:30:13,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 18:30:13,000 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:30:13,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:30:13,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-10-15 18:30:13,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:30:13,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225255411] [2020-10-15 18:30:13,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:30:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:30:13,055 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 18:30:13,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225255411] [2020-10-15 18:30:13,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:30:13,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:30:13,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086642065] [2020-10-15 18:30:13,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:30:13,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:30:13,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:30:13,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:30:13,060 INFO L87 Difference]: Start difference. First operand 116 states and 268 transitions. Second operand 4 states. [2020-10-15 18:30:13,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:30:13,081 INFO L93 Difference]: Finished difference Result 140 states and 310 transitions. [2020-10-15 18:30:13,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 18:30:13,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-15 18:30:13,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:30:13,082 INFO L225 Difference]: With dead ends: 140 [2020-10-15 18:30:13,083 INFO L226 Difference]: Without dead ends: 68 [2020-10-15 18:30:13,085 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 18:30:13,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-15 18:30:13,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-15 18:30:13,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-15 18:30:13,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-10-15 18:30:13,095 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 11 [2020-10-15 18:30:13,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:30:13,095 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-10-15 18:30:13,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:30:13,095 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-10-15 18:30:13,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 18:30:13,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:30:13,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:30:13,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 18:30:13,097 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:30:13,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:30:13,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 1 times [2020-10-15 18:30:13,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:30:13,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007683116] [2020-10-15 18:30:13,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:30:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:30:13,190 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 18:30:13,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007683116] [2020-10-15 18:30:13,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:30:13,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:30:13,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705931662] [2020-10-15 18:30:13,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:30:13,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:30:13,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:30:13,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:30:13,193 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-10-15 18:30:13,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:30:13,226 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-10-15 18:30:13,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:30:13,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-15 18:30:13,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:30:13,228 INFO L225 Difference]: With dead ends: 81 [2020-10-15 18:30:13,229 INFO L226 Difference]: Without dead ends: 59 [2020-10-15 18:30:13,229 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 18:30:13,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-15 18:30:13,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-15 18:30:13,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-15 18:30:13,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-10-15 18:30:13,233 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-10-15 18:30:13,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:30:13,234 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-10-15 18:30:13,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:30:13,234 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-10-15 18:30:13,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 18:30:13,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:30:13,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:30:13,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 18:30:13,235 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:30:13,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:30:13,236 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-10-15 18:30:13,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:30:13,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787132566] [2020-10-15 18:30:13,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:30:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:30:13,340 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 18:30:13,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787132566] [2020-10-15 18:30:13,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:30:13,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:30:13,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233199204] [2020-10-15 18:30:13,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 18:30:13,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:30:13,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 18:30:13,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:30:13,344 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-10-15 18:30:13,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:30:13,393 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-10-15 18:30:13,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 18:30:13,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-15 18:30:13,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:30:13,395 INFO L225 Difference]: With dead ends: 60 [2020-10-15 18:30:13,395 INFO L226 Difference]: Without dead ends: 45 [2020-10-15 18:30:13,395 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 18:30:13,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-15 18:30:13,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-15 18:30:13,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-15 18:30:13,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-10-15 18:30:13,399 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-10-15 18:30:13,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:30:13,400 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-10-15 18:30:13,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 18:30:13,400 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-10-15 18:30:13,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 18:30:13,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:30:13,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:30:13,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 18:30:13,401 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:30:13,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:30:13,402 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-10-15 18:30:13,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:30:13,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931692273] [2020-10-15 18:30:13,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:30:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:30:13,470 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 18:30:13,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931692273] [2020-10-15 18:30:13,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:30:13,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 18:30:13,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347647154] [2020-10-15 18:30:13,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 18:30:13,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:30:13,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 18:30:13,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 18:30:13,472 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-10-15 18:30:13,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:30:13,517 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-10-15 18:30:13,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 18:30:13,518 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-15 18:30:13,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:30:13,519 INFO L225 Difference]: With dead ends: 42 [2020-10-15 18:30:13,519 INFO L226 Difference]: Without dead ends: 36 [2020-10-15 18:30:13,520 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 18:30:13,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-15 18:30:13,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-15 18:30:13,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-15 18:30:13,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-15 18:30:13,522 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-15 18:30:13,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:30:13,523 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-15 18:30:13,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 18:30:13,523 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-15 18:30:13,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 18:30:13,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:30:13,524 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 18:30:13,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 18:30:13,524 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:30:13,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:30:13,525 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-10-15 18:30:13,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:30:13,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476081771] [2020-10-15 18:30:13,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:30:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:30:13,555 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 18:30:13,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476081771] [2020-10-15 18:30:13,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:30:13,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:30:13,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71302562] [2020-10-15 18:30:13,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:30:13,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:30:13,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:30:13,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:30:13,558 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-15 18:30:13,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:30:13,567 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-15 18:30:13,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 18:30:13,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-15 18:30:13,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:30:13,567 INFO L225 Difference]: With dead ends: 35 [2020-10-15 18:30:13,567 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 18:30:13,568 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 18:30:13,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 18:30:13,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 18:30:13,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 18:30:13,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 18:30:13,569 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-15 18:30:13,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:30:13,569 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 18:30:13,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:30:13,569 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 18:30:13,570 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 18:30:13,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 18:30:13,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 06:30:13 BasicIcfg [2020-10-15 18:30:13,573 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 18:30:13,576 INFO L168 Benchmark]: Toolchain (without parser) took 4606.69 ms. Allocated memory was 250.6 MB in the beginning and 372.8 MB in the end (delta: 122.2 MB). Free memory was 204.3 MB in the beginning and 230.5 MB in the end (delta: -26.2 MB). Peak memory consumption was 95.9 MB. Max. memory is 14.2 GB. [2020-10-15 18:30:13,576 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 18:30:13,577 INFO L168 Benchmark]: CACSL2BoogieTranslator took 876.24 ms. Allocated memory was 250.6 MB in the beginning and 313.5 MB in the end (delta: 62.9 MB). Free memory was 204.3 MB in the beginning and 264.5 MB in the end (delta: -60.2 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. [2020-10-15 18:30:13,578 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.22 ms. Allocated memory is still 313.5 MB. Free memory was 264.5 MB in the beginning and 261.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 18:30:13,579 INFO L168 Benchmark]: Boogie Preprocessor took 30.91 ms. Allocated memory is still 313.5 MB. Free memory was 261.9 MB in the beginning and 259.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 18:30:13,580 INFO L168 Benchmark]: RCFGBuilder took 429.74 ms. Allocated memory is still 313.5 MB. Free memory was 259.4 MB in the beginning and 237.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-15 18:30:13,581 INFO L168 Benchmark]: TraceAbstraction took 3213.95 ms. Allocated memory was 313.5 MB in the beginning and 372.8 MB in the end (delta: 59.2 MB). Free memory was 237.6 MB in the beginning and 230.5 MB in the end (delta: 7.1 MB). Peak memory consumption was 66.4 MB. Max. memory is 14.2 GB. [2020-10-15 18:30:13,585 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 876.24 ms. Allocated memory was 250.6 MB in the beginning and 313.5 MB in the end (delta: 62.9 MB). Free memory was 204.3 MB in the beginning and 264.5 MB in the end (delta: -60.2 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 50.22 ms. Allocated memory is still 313.5 MB. Free memory was 264.5 MB in the beginning and 261.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 30.91 ms. Allocated memory is still 313.5 MB. Free memory was 261.9 MB in the beginning and 259.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 429.74 ms. Allocated memory is still 313.5 MB. Free memory was 259.4 MB in the beginning and 237.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3213.95 ms. Allocated memory was 313.5 MB in the beginning and 372.8 MB in the end (delta: 59.2 MB). Free memory was 237.6 MB in the beginning and 230.5 MB in the end (delta: 7.1 MB). Peak memory consumption was 66.4 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 847 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 63 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 2810 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 145 SDtfs, 140 SDslu, 178 SDs, 0 SdLazy, 112 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s 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, 8 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...