/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-14 23:24:09,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-14 23:24:09,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-14 23:24:09,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-14 23:24:09,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-14 23:24:09,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-14 23:24:09,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-14 23:24:09,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-14 23:24:09,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-14 23:24:09,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-14 23:24:09,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-14 23:24:09,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-14 23:24:09,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-14 23:24:09,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-14 23:24:09,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-14 23:24:09,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-14 23:24:09,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-14 23:24:09,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-14 23:24:09,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-14 23:24:09,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-14 23:24:09,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-14 23:24:09,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-14 23:24:09,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-14 23:24:09,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-14 23:24:09,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-14 23:24:09,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-14 23:24:09,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-14 23:24:09,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-14 23:24:09,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-14 23:24:09,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-14 23:24:09,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-14 23:24:09,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-14 23:24:09,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-14 23:24:09,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-14 23:24:09,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-14 23:24:09,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-14 23:24:09,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-14 23:24:09,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-14 23:24:09,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-14 23:24:09,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-14 23:24:09,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-14 23:24:09,370 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-14 23:24:09,433 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-14 23:24:09,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-14 23:24:09,438 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-14 23:24:09,438 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-14 23:24:09,438 INFO L138 SettingsManager]: * Use SBE=true [2020-09-14 23:24:09,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-14 23:24:09,439 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-14 23:24:09,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-14 23:24:09,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-14 23:24:09,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-14 23:24:09,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-14 23:24:09,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-14 23:24:09,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-14 23:24:09,440 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-14 23:24:09,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-14 23:24:09,440 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-14 23:24:09,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-14 23:24:09,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-14 23:24:09,441 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-14 23:24:09,441 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-14 23:24:09,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-14 23:24:09,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 23:24:09,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-14 23:24:09,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-14 23:24:09,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-14 23:24:09,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-14 23:24:09,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-14 23:24:09,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-14 23:24:09,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-14 23:24:09,445 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-14 23:24:09,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-14 23:24:09,946 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-14 23:24:09,951 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-14 23:24:09,953 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-14 23:24:09,953 INFO L275 PluginConnector]: CDTParser initialized [2020-09-14 23:24:09,955 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i [2020-09-14 23:24:10,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cb51bf3f/2f160d3d10fd48e7a59d6868d1a30806/FLAGa03edb99c [2020-09-14 23:24:10,703 INFO L306 CDTParser]: Found 1 translation units. [2020-09-14 23:24:10,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i [2020-09-14 23:24:10,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cb51bf3f/2f160d3d10fd48e7a59d6868d1a30806/FLAGa03edb99c [2020-09-14 23:24:10,897 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cb51bf3f/2f160d3d10fd48e7a59d6868d1a30806 [2020-09-14 23:24:10,910 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-14 23:24:10,915 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-14 23:24:10,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-14 23:24:10,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-14 23:24:10,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-14 23:24:10,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 11:24:10" (1/1) ... [2020-09-14 23:24:10,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39d953c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:24:10, skipping insertion in model container [2020-09-14 23:24:10,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 11:24:10" (1/1) ... [2020-09-14 23:24:10,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-14 23:24:10,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-14 23:24:11,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 23:24:11,557 INFO L203 MainTranslator]: Completed pre-run [2020-09-14 23:24:11,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 23:24:11,719 INFO L208 MainTranslator]: Completed translation [2020-09-14 23:24:11,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:24:11 WrapperNode [2020-09-14 23:24:11,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-14 23:24:11,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-14 23:24:11,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-14 23:24:11,721 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-14 23:24:11,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:24:11" (1/1) ... [2020-09-14 23:24:11,752 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:24:11" (1/1) ... [2020-09-14 23:24:11,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-14 23:24:11,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-14 23:24:11,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-14 23:24:11,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-14 23:24:11,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:24:11" (1/1) ... [2020-09-14 23:24:11,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:24:11" (1/1) ... [2020-09-14 23:24:11,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:24:11" (1/1) ... [2020-09-14 23:24:11,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:24:11" (1/1) ... [2020-09-14 23:24:11,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:24:11" (1/1) ... [2020-09-14 23:24:11,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:24:11" (1/1) ... [2020-09-14 23:24:11,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:24:11" (1/1) ... [2020-09-14 23:24:11,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-14 23:24:11,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-14 23:24:11,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-14 23:24:11,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-14 23:24:11,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:24:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 23:24:11,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-14 23:24:11,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-14 23:24:11,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-14 23:24:11,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-14 23:24:11,898 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-14 23:24:11,898 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-14 23:24:11,898 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-14 23:24:11,898 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-14 23:24:11,898 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-14 23:24:11,899 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-14 23:24:11,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-14 23:24:11,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-14 23:24:11,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-14 23:24:11,909 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-14 23:24:12,345 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-14 23:24:12,345 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-14 23:24:12,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 11:24:12 BoogieIcfgContainer [2020-09-14 23:24:12,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-14 23:24:12,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-14 23:24:12,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-14 23:24:12,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-14 23:24:12,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 11:24:10" (1/3) ... [2020-09-14 23:24:12,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a772d3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 11:24:12, skipping insertion in model container [2020-09-14 23:24:12,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:24:11" (2/3) ... [2020-09-14 23:24:12,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a772d3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 11:24:12, skipping insertion in model container [2020-09-14 23:24:12,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 11:24:12" (3/3) ... [2020-09-14 23:24:12,361 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_pso.oepc.i [2020-09-14 23:24:12,373 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-14 23:24:12,374 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-14 23:24:12,384 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-14 23:24:12,385 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-14 23:24:12,413 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,413 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,413 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,414 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,414 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,415 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,415 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,415 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,416 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,416 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,416 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,417 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,417 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,417 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,417 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,418 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,418 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,418 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,423 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,423 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,424 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,424 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,435 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,435 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,436 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,436 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,440 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,441 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,441 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,441 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:24:12,467 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-14 23:24:12,495 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 23:24:12,495 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 23:24:12,495 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 23:24:12,496 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 23:24:12,496 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 23:24:12,496 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 23:24:12,496 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 23:24:12,496 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 23:24:12,516 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-14 23:24:12,518 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-14 23:24:12,575 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-14 23:24:12,575 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 23:24:12,581 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-14 23:24:12,585 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-14 23:24:12,605 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-14 23:24:12,605 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 23:24:12,606 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-14 23:24:12,608 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-14 23:24:12,610 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 23:24:14,282 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-09-14 23:24:14,483 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-09-14 23:24:14,483 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-09-14 23:24:14,488 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-14 23:24:14,515 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-14 23:24:14,517 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-14 23:24:14,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-14 23:24:14,527 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:24:14,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:24:14,529 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:24:14,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:24:14,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-09-14 23:24:14,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:24:14,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203847890] [2020-09-14 23:24:14,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:24:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:24:14,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 23:24:14,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203847890] [2020-09-14 23:24:14,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:24:14,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 23:24:14,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38878665] [2020-09-14 23:24:14,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 23:24:14,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:24:14,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 23:24:14,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 23:24:14,840 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-14 23:24:14,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:24:14,903 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-14 23:24:14,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 23:24:14,907 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-14 23:24:14,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:24:14,941 INFO L225 Difference]: With dead ends: 282 [2020-09-14 23:24:14,942 INFO L226 Difference]: Without dead ends: 218 [2020-09-14 23:24:14,944 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 [2020-09-14 23:24:14,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-14 23:24:15,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-14 23:24:15,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-14 23:24:15,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-14 23:24:15,042 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-14 23:24:15,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:24:15,044 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-14 23:24:15,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 23:24:15,044 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-14 23:24:15,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-14 23:24:15,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:24:15,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:24:15,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-14 23:24:15,046 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:24:15,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:24:15,047 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-09-14 23:24:15,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:24:15,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174580098] [2020-09-14 23:24:15,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:24:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:24:15,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 23:24:15,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174580098] [2020-09-14 23:24:15,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:24:15,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 23:24:15,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634825889] [2020-09-14 23:24:15,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 23:24:15,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:24:15,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 23:24:15,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 23:24:15,130 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-09-14 23:24:15,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:24:15,152 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-09-14 23:24:15,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 23:24:15,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-14 23:24:15,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:24:15,155 INFO L225 Difference]: With dead ends: 202 [2020-09-14 23:24:15,155 INFO L226 Difference]: Without dead ends: 202 [2020-09-14 23:24:15,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 23:24:15,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-14 23:24:15,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-14 23:24:15,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-14 23:24:15,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-14 23:24:15,172 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-09-14 23:24:15,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:24:15,172 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-14 23:24:15,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 23:24:15,173 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-14 23:24:15,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-14 23:24:15,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:24:15,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:24:15,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-14 23:24:15,175 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:24:15,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:24:15,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1603398907, now seen corresponding path program 1 times [2020-09-14 23:24:15,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:24:15,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627076784] [2020-09-14 23:24:15,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:24:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:24:15,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 23:24:15,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627076784] [2020-09-14 23:24:15,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:24:15,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 23:24:15,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579528225] [2020-09-14 23:24:15,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 23:24:15,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:24:15,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 23:24:15,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 23:24:15,283 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-09-14 23:24:15,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:24:15,293 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-09-14 23:24:15,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 23:24:15,293 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-14 23:24:15,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:24:15,296 INFO L225 Difference]: With dead ends: 194 [2020-09-14 23:24:15,296 INFO L226 Difference]: Without dead ends: 194 [2020-09-14 23:24:15,297 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 [2020-09-14 23:24:15,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-14 23:24:15,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-09-14 23:24:15,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-14 23:24:15,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-09-14 23:24:15,310 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-09-14 23:24:15,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:24:15,311 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-09-14 23:24:15,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 23:24:15,311 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-09-14 23:24:15,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-14 23:24:15,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:24:15,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:24:15,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-14 23:24:15,314 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:24:15,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:24:15,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-09-14 23:24:15,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:24:15,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990898266] [2020-09-14 23:24:15,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:24:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:24:15,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 23:24:15,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990898266] [2020-09-14 23:24:15,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:24:15,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 23:24:15,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672331982] [2020-09-14 23:24:15,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 23:24:15,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:24:15,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 23:24:15,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 23:24:15,448 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-09-14 23:24:15,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:24:15,515 INFO L93 Difference]: Finished difference Result 225 states and 557 transitions. [2020-09-14 23:24:15,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 23:24:15,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-14 23:24:15,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:24:15,520 INFO L225 Difference]: With dead ends: 225 [2020-09-14 23:24:15,520 INFO L226 Difference]: Without dead ends: 161 [2020-09-14 23:24:15,521 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 [2020-09-14 23:24:15,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-09-14 23:24:15,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-09-14 23:24:15,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-09-14 23:24:15,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 386 transitions. [2020-09-14 23:24:15,532 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 386 transitions. Word has length 11 [2020-09-14 23:24:15,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:24:15,532 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 386 transitions. [2020-09-14 23:24:15,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 23:24:15,532 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 386 transitions. [2020-09-14 23:24:15,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-14 23:24:15,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:24:15,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:24:15,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-14 23:24:15,534 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:24:15,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:24:15,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1941611660, now seen corresponding path program 1 times [2020-09-14 23:24:15,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:24:15,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214372171] [2020-09-14 23:24:15,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:24:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:24:15,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 23:24:15,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214372171] [2020-09-14 23:24:15,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:24:15,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 23:24:15,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242717466] [2020-09-14 23:24:15,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 23:24:15,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:24:15,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 23:24:15,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 23:24:15,604 INFO L87 Difference]: Start difference. First operand 161 states and 386 transitions. Second operand 5 states. [2020-09-14 23:24:15,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:24:15,670 INFO L93 Difference]: Finished difference Result 160 states and 362 transitions. [2020-09-14 23:24:15,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 23:24:15,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-14 23:24:15,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:24:15,675 INFO L225 Difference]: With dead ends: 160 [2020-09-14 23:24:15,676 INFO L226 Difference]: Without dead ends: 123 [2020-09-14 23:24:15,676 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 [2020-09-14 23:24:15,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-14 23:24:15,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-09-14 23:24:15,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-14 23:24:15,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-09-14 23:24:15,689 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 12 [2020-09-14 23:24:15,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:24:15,689 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-09-14 23:24:15,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 23:24:15,689 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-09-14 23:24:15,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-14 23:24:15,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:24:15,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:24:15,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-14 23:24:15,694 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:24:15,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:24:15,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-09-14 23:24:15,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:24:15,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087380757] [2020-09-14 23:24:15,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:24:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:24:15,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 23:24:15,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087380757] [2020-09-14 23:24:15,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:24:15,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 23:24:15,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182967579] [2020-09-14 23:24:15,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 23:24:15,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:24:15,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 23:24:15,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-14 23:24:15,821 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 6 states. [2020-09-14 23:24:15,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:24:15,890 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-09-14 23:24:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-14 23:24:15,891 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-14 23:24:15,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:24:15,893 INFO L225 Difference]: With dead ends: 118 [2020-09-14 23:24:15,893 INFO L226 Difference]: Without dead ends: 108 [2020-09-14 23:24:15,894 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 [2020-09-14 23:24:15,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-14 23:24:15,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-09-14 23:24:15,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-14 23:24:15,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-09-14 23:24:15,899 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-09-14 23:24:15,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:24:15,899 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-09-14 23:24:15,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 23:24:15,899 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-09-14 23:24:15,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-14 23:24:15,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:24:15,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:24:15,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-14 23:24:15,901 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:24:15,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:24:15,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-09-14 23:24:15,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:24:15,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101542793] [2020-09-14 23:24:15,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:24:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:24:15,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 23:24:15,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101542793] [2020-09-14 23:24:15,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:24:15,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 23:24:15,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66715296] [2020-09-14 23:24:15,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 23:24:15,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:24:15,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 23:24:15,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 23:24:15,972 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-09-14 23:24:15,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:24:15,992 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-09-14 23:24:15,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 23:24:15,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-14 23:24:15,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:24:15,994 INFO L225 Difference]: With dead ends: 133 [2020-09-14 23:24:15,994 INFO L226 Difference]: Without dead ends: 54 [2020-09-14 23:24:15,994 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 [2020-09-14 23:24:15,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-14 23:24:15,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-14 23:24:15,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-14 23:24:15,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-09-14 23:24:15,997 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-09-14 23:24:15,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:24:15,997 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-09-14 23:24:15,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 23:24:15,998 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-09-14 23:24:15,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-14 23:24:15,998 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:24:15,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:24:15,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-14 23:24:15,999 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:24:15,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:24:15,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 2 times [2020-09-14 23:24:16,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:24:16,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519661607] [2020-09-14 23:24:16,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:24:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:24:16,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 23:24:16,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519661607] [2020-09-14 23:24:16,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:24:16,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 23:24:16,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193203364] [2020-09-14 23:24:16,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 23:24:16,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:24:16,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 23:24:16,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 23:24:16,055 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-09-14 23:24:16,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:24:16,074 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2020-09-14 23:24:16,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 23:24:16,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-14 23:24:16,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:24:16,076 INFO L225 Difference]: With dead ends: 63 [2020-09-14 23:24:16,076 INFO L226 Difference]: Without dead ends: 38 [2020-09-14 23:24:16,076 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 [2020-09-14 23:24:16,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-14 23:24:16,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-14 23:24:16,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-14 23:24:16,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-09-14 23:24:16,078 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 17 [2020-09-14 23:24:16,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:24:16,079 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-09-14 23:24:16,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 23:24:16,079 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-09-14 23:24:16,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-14 23:24:16,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:24:16,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:24:16,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-14 23:24:16,080 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:24:16,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:24:16,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1965606506, now seen corresponding path program 3 times [2020-09-14 23:24:16,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:24:16,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503272496] [2020-09-14 23:24:16,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:24:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:24:16,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 23:24:16,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503272496] [2020-09-14 23:24:16,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:24:16,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 23:24:16,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896094864] [2020-09-14 23:24:16,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 23:24:16,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:24:16,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 23:24:16,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 23:24:16,136 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-09-14 23:24:16,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:24:16,156 INFO L93 Difference]: Finished difference Result 56 states and 90 transitions. [2020-09-14 23:24:16,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 23:24:16,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-14 23:24:16,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:24:16,157 INFO L225 Difference]: With dead ends: 56 [2020-09-14 23:24:16,157 INFO L226 Difference]: Without dead ends: 35 [2020-09-14 23:24:16,158 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 [2020-09-14 23:24:16,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-14 23:24:16,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-14 23:24:16,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-14 23:24:16,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-09-14 23:24:16,160 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-09-14 23:24:16,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:24:16,161 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-09-14 23:24:16,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 23:24:16,161 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-09-14 23:24:16,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-14 23:24:16,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:24:16,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:24:16,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-14 23:24:16,162 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:24:16,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:24:16,163 INFO L82 PathProgramCache]: Analyzing trace with hash -828702424, now seen corresponding path program 4 times [2020-09-14 23:24:16,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:24:16,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143659845] [2020-09-14 23:24:16,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:24:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:24:16,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 23:24:16,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143659845] [2020-09-14 23:24:16,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:24:16,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 23:24:16,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923642051] [2020-09-14 23:24:16,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 23:24:16,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:24:16,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 23:24:16,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 23:24:16,223 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-09-14 23:24:16,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:24:16,238 INFO L93 Difference]: Finished difference Result 34 states and 55 transitions. [2020-09-14 23:24:16,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 23:24:16,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-14 23:24:16,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:24:16,239 INFO L225 Difference]: With dead ends: 34 [2020-09-14 23:24:16,239 INFO L226 Difference]: Without dead ends: 0 [2020-09-14 23:24:16,240 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 [2020-09-14 23:24:16,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-14 23:24:16,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-14 23:24:16,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-14 23:24:16,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-14 23:24:16,241 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-14 23:24:16,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:24:16,241 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-14 23:24:16,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 23:24:16,241 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-14 23:24:16,242 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-14 23:24:16,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-14 23:24:16,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 11:24:16 BasicIcfg [2020-09-14 23:24:16,247 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-14 23:24:16,249 INFO L168 Benchmark]: Toolchain (without parser) took 5337.31 ms. Allocated memory was 147.8 MB in the beginning and 246.9 MB in the end (delta: 99.1 MB). Free memory was 102.5 MB in the beginning and 123.1 MB in the end (delta: -20.6 MB). Peak memory consumption was 78.4 MB. Max. memory is 7.1 GB. [2020-09-14 23:24:16,250 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-14 23:24:16,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 804.20 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 101.8 MB in the beginning and 162.8 MB in the end (delta: -61.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-09-14 23:24:16,252 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.11 ms. Allocated memory is still 205.0 MB. Free memory was 162.8 MB in the beginning and 160.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-14 23:24:16,252 INFO L168 Benchmark]: Boogie Preprocessor took 29.88 ms. Allocated memory is still 205.0 MB. Free memory was 160.8 MB in the beginning and 159.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-14 23:24:16,253 INFO L168 Benchmark]: RCFGBuilder took 543.55 ms. Allocated memory is still 205.0 MB. Free memory was 158.8 MB in the beginning and 136.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-09-14 23:24:16,254 INFO L168 Benchmark]: TraceAbstraction took 3894.05 ms. Allocated memory was 205.0 MB in the beginning and 246.9 MB in the end (delta: 41.9 MB). Free memory was 136.3 MB in the beginning and 123.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 55.1 MB. Max. memory is 7.1 GB. [2020-09-14 23:24:16,258 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 804.20 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 101.8 MB in the beginning and 162.8 MB in the end (delta: -61.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.11 ms. Allocated memory is still 205.0 MB. Free memory was 162.8 MB in the beginning and 160.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.88 ms. Allocated memory is still 205.0 MB. Free memory was 160.8 MB in the beginning and 159.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 543.55 ms. Allocated memory is still 205.0 MB. Free memory was 158.8 MB in the beginning and 136.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3894.05 ms. Allocated memory was 205.0 MB in the beginning and 246.9 MB in the end (delta: 41.9 MB). Free memory was 136.3 MB in the beginning and 123.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 55.1 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, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 672 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 205 SDtfs, 151 SDslu, 247 SDs, 0 SdLazy, 129 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 4232 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...