/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-16 23:02:48,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 23:02:48,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 23:02:48,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 23:02:48,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 23:02:48,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 23:02:48,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 23:02:48,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 23:02:48,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 23:02:48,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 23:02:48,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 23:02:48,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 23:02:48,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 23:02:48,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 23:02:48,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 23:02:48,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 23:02:48,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 23:02:48,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 23:02:48,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 23:02:48,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 23:02:48,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 23:02:48,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 23:02:48,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 23:02:48,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 23:02:48,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-16 23:02:48,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 23:02:48,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 23:02:48,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 23:02:48,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 23:02:48,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 23:02:48,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 23:02:48,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 23:02:48,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 23:02:48,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 23:02:48,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 23:02:48,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 23:02:48,349 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 [2020-09-16 23:02:48,375 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 23:02:48,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 23:02:48,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 23:02:48,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 23:02:48,377 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 23:02:48,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 23:02:48,377 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 23:02:48,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 23:02:48,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 23:02:48,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 23:02:48,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 23:02:48,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 23:02:48,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 23:02:48,378 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 23:02:48,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 23:02:48,379 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 23:02:48,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 23:02:48,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 23:02:48,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 23:02:48,380 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 23:02:48,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 23:02:48,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 23:02:48,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 23:02:48,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-16 23:02:48,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 23:02:48,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 23:02:48,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 23:02:48,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 23:02:48,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-16 23:02:48,382 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-16 23:02:48,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 23:02:48,824 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 23:02:48,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 23:02:48,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 23:02:48,833 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 23:02:48,835 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2020-09-16 23:02:48,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed0bd41c1/73f7b3a778a1451d96ac20d80987317a/FLAGd47959a18 [2020-09-16 23:02:49,502 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 23:02:49,503 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2020-09-16 23:02:49,528 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed0bd41c1/73f7b3a778a1451d96ac20d80987317a/FLAGd47959a18 [2020-09-16 23:02:49,723 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed0bd41c1/73f7b3a778a1451d96ac20d80987317a [2020-09-16 23:02:49,738 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 23:02:49,744 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 23:02:49,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 23:02:49,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 23:02:49,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 23:02:49,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:02:49" (1/1) ... [2020-09-16 23:02:49,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@689fd9e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:02:49, skipping insertion in model container [2020-09-16 23:02:49,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:02:49" (1/1) ... [2020-09-16 23:02:49,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 23:02:49,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 23:02:50,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 23:02:50,409 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 23:02:50,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 23:02:50,556 INFO L208 MainTranslator]: Completed translation [2020-09-16 23:02:50,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:02:50 WrapperNode [2020-09-16 23:02:50,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 23:02:50,558 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 23:02:50,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 23:02:50,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 23:02:50,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:02:50" (1/1) ... [2020-09-16 23:02:50,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:02:50" (1/1) ... [2020-09-16 23:02:50,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 23:02:50,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 23:02:50,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 23:02:50,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 23:02:50,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:02:50" (1/1) ... [2020-09-16 23:02:50,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:02:50" (1/1) ... [2020-09-16 23:02:50,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:02:50" (1/1) ... [2020-09-16 23:02:50,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:02:50" (1/1) ... [2020-09-16 23:02:50,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:02:50" (1/1) ... [2020-09-16 23:02:50,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:02:50" (1/1) ... [2020-09-16 23:02:50,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:02:50" (1/1) ... [2020-09-16 23:02:50,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 23:02:50,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 23:02:50,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 23:02:50,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 23:02:50,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:02:50" (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 [2020-09-16 23:02:50,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 23:02:50,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-16 23:02:50,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 23:02:50,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 23:02:50,740 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-16 23:02:50,740 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-16 23:02:50,740 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-16 23:02:50,741 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-16 23:02:50,741 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-16 23:02:50,741 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-16 23:02:50,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-16 23:02:50,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 23:02:50,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 23:02:50,744 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 23:02:51,134 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 23:02:51,135 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-16 23:02:51,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:02:51 BoogieIcfgContainer [2020-09-16 23:02:51,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 23:02:51,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 23:02:51,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 23:02:51,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 23:02:51,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:02:49" (1/3) ... [2020-09-16 23:02:51,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@172cf854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:02:51, skipping insertion in model container [2020-09-16 23:02:51,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:02:50" (2/3) ... [2020-09-16 23:02:51,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@172cf854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:02:51, skipping insertion in model container [2020-09-16 23:02:51,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:02:51" (3/3) ... [2020-09-16 23:02:51,151 INFO L109 eAbstractionObserver]: Analyzing ICFG safe002_tso.oepc.i [2020-09-16 23:02:51,162 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 23:02:51,162 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-16 23:02:51,173 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 23:02:51,174 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 23:02:51,202 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,203 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,203 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,206 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,206 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,206 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,207 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,207 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,207 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,208 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,208 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,208 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,208 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,209 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,209 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,209 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,209 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,210 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,219 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,219 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,219 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,220 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,228 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,228 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,228 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,229 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,239 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,240 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,240 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,240 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:02:51,268 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-16 23:02:51,293 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 23:02:51,293 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 23:02:51,294 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-16 23:02:51,294 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-16 23:02:51,294 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 23:02:51,294 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 23:02:51,294 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 23:02:51,295 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 23:02:51,313 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-16 23:02:51,315 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-16 23:02:51,368 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-16 23:02:51,368 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 23:02:51,375 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. [2020-09-16 23:02:51,378 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-16 23:02:51,401 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-16 23:02:51,401 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 23:02:51,402 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. [2020-09-16 23:02:51,407 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-16 23:02:51,408 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-16 23:02:53,213 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-09-16 23:02:53,213 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-09-16 23:02:53,218 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-16 23:02:53,246 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-16 23:02:53,249 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-16 23:02:53,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-16 23:02:53,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:02:53,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:02:53,261 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:02:53,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:02:53,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-09-16 23:02:53,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:02:53,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421617831] [2020-09-16 23:02:53,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:02:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:02:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:02:53,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421617831] [2020-09-16 23:02:53,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:02:53,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 23:02:53,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107273370] [2020-09-16 23:02:53,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 23:02:53,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:02:53,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 23:02:53,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:02:53,572 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-16 23:02:53,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:02:53,636 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-16 23:02:53,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 23:02:53,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-16 23:02:53,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:02:53,661 INFO L225 Difference]: With dead ends: 282 [2020-09-16 23:02:53,661 INFO L226 Difference]: Without dead ends: 218 [2020-09-16 23:02:53,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:02:53,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-16 23:02:53,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-16 23:02:53,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-16 23:02:53,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-16 23:02:53,781 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-16 23:02:53,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:02:53,782 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-16 23:02:53,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 23:02:53,783 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-16 23:02:53,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 23:02:53,785 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:02:53,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:02:53,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 23:02:53,786 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:02:53,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:02:53,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-09-16 23:02:53,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:02:53,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811914929] [2020-09-16 23:02:53,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:02:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:02:53,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:02:53,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811914929] [2020-09-16 23:02:53,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:02:53,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:02:53,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873039894] [2020-09-16 23:02:53,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:02:53,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:02:53,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:02:53,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:02:53,921 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-09-16 23:02:53,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:02:53,963 INFO L93 Difference]: Finished difference Result 290 states and 762 transitions. [2020-09-16 23:02:53,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 23:02:53,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-16 23:02:53,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:02:53,966 INFO L225 Difference]: With dead ends: 290 [2020-09-16 23:02:53,966 INFO L226 Difference]: Without dead ends: 164 [2020-09-16 23:02:53,967 INFO L675 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 [2020-09-16 23:02:53,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-16 23:02:53,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-09-16 23:02:53,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-16 23:02:53,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 424 transitions. [2020-09-16 23:02:53,983 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 424 transitions. Word has length 9 [2020-09-16 23:02:53,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:02:53,983 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 424 transitions. [2020-09-16 23:02:53,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:02:53,984 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 424 transitions. [2020-09-16 23:02:53,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-16 23:02:53,985 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:02:53,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:02:53,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 23:02:53,986 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:02:53,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:02:53,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1379691760, now seen corresponding path program 1 times [2020-09-16 23:02:53,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:02:53,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955235796] [2020-09-16 23:02:53,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:02:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:02:54,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:02:54,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955235796] [2020-09-16 23:02:54,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:02:54,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 23:02:54,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108139882] [2020-09-16 23:02:54,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:02:54,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:02:54,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:02:54,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:02:54,108 INFO L87 Difference]: Start difference. First operand 164 states and 424 transitions. Second operand 4 states. [2020-09-16 23:02:54,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:02:54,144 INFO L93 Difference]: Finished difference Result 244 states and 582 transitions. [2020-09-16 23:02:54,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 23:02:54,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-16 23:02:54,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:02:54,147 INFO L225 Difference]: With dead ends: 244 [2020-09-16 23:02:54,147 INFO L226 Difference]: Without dead ends: 128 [2020-09-16 23:02:54,147 INFO L675 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 [2020-09-16 23:02:54,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-16 23:02:54,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 116. [2020-09-16 23:02:54,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-16 23:02:54,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 268 transitions. [2020-09-16 23:02:54,157 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 268 transitions. Word has length 11 [2020-09-16 23:02:54,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:02:54,157 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 268 transitions. [2020-09-16 23:02:54,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:02:54,158 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 268 transitions. [2020-09-16 23:02:54,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-16 23:02:54,159 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:02:54,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:02:54,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 23:02:54,159 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:02:54,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:02:54,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-09-16 23:02:54,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:02:54,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876111865] [2020-09-16 23:02:54,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:02:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:02:54,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:02:54,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876111865] [2020-09-16 23:02:54,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:02:54,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:02:54,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844009658] [2020-09-16 23:02:54,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:02:54,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:02:54,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:02:54,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:02:54,226 INFO L87 Difference]: Start difference. First operand 116 states and 268 transitions. Second operand 4 states. [2020-09-16 23:02:54,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:02:54,258 INFO L93 Difference]: Finished difference Result 140 states and 310 transitions. [2020-09-16 23:02:54,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 23:02:54,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-16 23:02:54,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:02:54,260 INFO L225 Difference]: With dead ends: 140 [2020-09-16 23:02:54,260 INFO L226 Difference]: Without dead ends: 68 [2020-09-16 23:02:54,261 INFO L675 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 [2020-09-16 23:02:54,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-16 23:02:54,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-16 23:02:54,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-16 23:02:54,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-09-16 23:02:54,266 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 11 [2020-09-16 23:02:54,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:02:54,267 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-09-16 23:02:54,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:02:54,267 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-09-16 23:02:54,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-16 23:02:54,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:02:54,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:02:54,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 23:02:54,269 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:02:54,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:02:54,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 1 times [2020-09-16 23:02:54,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:02:54,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876554030] [2020-09-16 23:02:54,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:02:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:02:54,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:02:54,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876554030] [2020-09-16 23:02:54,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:02:54,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:02:54,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118734530] [2020-09-16 23:02:54,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:02:54,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:02:54,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:02:54,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:02:54,377 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-09-16 23:02:54,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:02:54,415 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-09-16 23:02:54,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 23:02:54,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-16 23:02:54,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:02:54,416 INFO L225 Difference]: With dead ends: 81 [2020-09-16 23:02:54,417 INFO L226 Difference]: Without dead ends: 59 [2020-09-16 23:02:54,417 INFO L675 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 [2020-09-16 23:02:54,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-16 23:02:54,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-09-16 23:02:54,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-16 23:02:54,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-09-16 23:02:54,421 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-09-16 23:02:54,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:02:54,422 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-09-16 23:02:54,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:02:54,422 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-09-16 23:02:54,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-16 23:02:54,423 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:02:54,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:02:54,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-16 23:02:54,424 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:02:54,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:02:54,424 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-09-16 23:02:54,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:02:54,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880385130] [2020-09-16 23:02:54,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:02:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:02:54,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:02:54,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880385130] [2020-09-16 23:02:54,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:02:54,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 23:02:54,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831494891] [2020-09-16 23:02:54,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 23:02:54,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:02:54,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 23:02:54,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:02:54,514 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-09-16 23:02:54,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:02:54,556 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-09-16 23:02:54,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 23:02:54,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-16 23:02:54,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:02:54,557 INFO L225 Difference]: With dead ends: 60 [2020-09-16 23:02:54,557 INFO L226 Difference]: Without dead ends: 45 [2020-09-16 23:02:54,558 INFO L675 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 [2020-09-16 23:02:54,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-16 23:02:54,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-16 23:02:54,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-16 23:02:54,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-09-16 23:02:54,561 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-09-16 23:02:54,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:02:54,562 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-09-16 23:02:54,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 23:02:54,562 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-09-16 23:02:54,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-16 23:02:54,563 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:02:54,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:02:54,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-16 23:02:54,563 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:02:54,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:02:54,564 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-09-16 23:02:54,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:02:54,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746752975] [2020-09-16 23:02:54,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:02:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:02:54,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:02:54,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746752975] [2020-09-16 23:02:54,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:02:54,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 23:02:54,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581798152] [2020-09-16 23:02:54,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 23:02:54,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:02:54,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 23:02:54,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-16 23:02:54,659 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-09-16 23:02:54,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:02:54,710 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-09-16 23:02:54,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 23:02:54,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-16 23:02:54,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:02:54,712 INFO L225 Difference]: With dead ends: 42 [2020-09-16 23:02:54,712 INFO L226 Difference]: Without dead ends: 36 [2020-09-16 23:02:54,713 INFO L675 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 [2020-09-16 23:02:54,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-16 23:02:54,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-16 23:02:54,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-16 23:02:54,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-09-16 23:02:54,716 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-09-16 23:02:54,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:02:54,716 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-09-16 23:02:54,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 23:02:54,717 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-09-16 23:02:54,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-16 23:02:54,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:02:54,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:02:54,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-16 23:02:54,718 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:02:54,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:02:54,718 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-09-16 23:02:54,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:02:54,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221397887] [2020-09-16 23:02:54,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:02:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:02:54,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:02:54,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221397887] [2020-09-16 23:02:54,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:02:54,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 23:02:54,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128750410] [2020-09-16 23:02:54,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:02:54,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:02:54,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:02:54,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:02:54,798 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-09-16 23:02:54,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:02:54,812 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-09-16 23:02:54,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 23:02:54,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-16 23:02:54,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:02:54,813 INFO L225 Difference]: With dead ends: 35 [2020-09-16 23:02:54,814 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 23:02:54,814 INFO L675 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 [2020-09-16 23:02:54,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 23:02:54,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 23:02:54,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 23:02:54,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 23:02:54,815 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-16 23:02:54,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:02:54,815 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 23:02:54,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:02:54,815 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 23:02:54,815 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 23:02:54,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-16 23:02:54,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:02:54 BasicIcfg [2020-09-16 23:02:54,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 23:02:54,829 INFO L168 Benchmark]: Toolchain (without parser) took 5086.73 ms. Allocated memory was 138.9 MB in the beginning and 249.0 MB in the end (delta: 110.1 MB). Free memory was 100.7 MB in the beginning and 147.2 MB in the end (delta: -46.6 MB). Peak memory consumption was 63.5 MB. Max. memory is 7.1 GB. [2020-09-16 23:02:54,830 INFO L168 Benchmark]: CDTParser took 1.48 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). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-16 23:02:54,831 INFO L168 Benchmark]: CACSL2BoogieTranslator took 812.91 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.0 MB in the beginning and 159.1 MB in the end (delta: -59.1 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-09-16 23:02:54,832 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.33 ms. Allocated memory is still 202.4 MB. Free memory was 159.1 MB in the beginning and 157.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-16 23:02:54,833 INFO L168 Benchmark]: Boogie Preprocessor took 32.32 ms. Allocated memory is still 202.4 MB. Free memory was 157.1 MB in the beginning and 155.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-16 23:02:54,833 INFO L168 Benchmark]: RCFGBuilder took 488.07 ms. Allocated memory is still 202.4 MB. Free memory was 155.1 MB in the beginning and 133.5 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-09-16 23:02:54,834 INFO L168 Benchmark]: TraceAbstraction took 3682.38 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 132.8 MB in the beginning and 147.2 MB in the end (delta: -14.4 MB). Peak memory consumption was 32.3 MB. Max. memory is 7.1 GB. [2020-09-16 23:02:54,839 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.48 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). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 812.91 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.0 MB in the beginning and 159.1 MB in the end (delta: -59.1 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.33 ms. Allocated memory is still 202.4 MB. Free memory was 159.1 MB in the beginning and 157.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.32 ms. Allocated memory is still 202.4 MB. Free memory was 157.1 MB in the beginning and 155.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 488.07 ms. Allocated memory is still 202.4 MB. Free memory was 155.1 MB in the beginning and 133.5 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3682.38 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 132.8 MB in the beginning and 147.2 MB in the end (delta: -14.4 MB). Peak memory consumption was 32.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 669 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 145 SDtfs, 140 SDslu, 178 SDs, 0 SdLazy, 112 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...