/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/safe019_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:20:04,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:20:04,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:20:04,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:20:04,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:20:04,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:20:04,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:20:04,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:20:04,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:20:04,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:20:04,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:20:04,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:20:04,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:20:04,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:20:04,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:20:04,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:20:04,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:20:04,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:20:04,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:20:04,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:20:04,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:20:04,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:20:04,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:20:04,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:20:04,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 11:20:04,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 11:20:04,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 11:20:04,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 11:20:04,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 11:20:04,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 11:20:04,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:20:04,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:20:04,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:20:04,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:20:04,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:20:04,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:20:04,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:20:04,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:20:04,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:20:04,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:20:04,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:20:04,218 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 11:20:04,265 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:20:04,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:20:04,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:20:04,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:20:04,268 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:20:04,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:20:04,268 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:20:04,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:20:04,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:20:04,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:20:04,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:20:04,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:20:04,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:20:04,271 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:20:04,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:20:04,272 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:20:04,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:20:04,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:20:04,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:20:04,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:20:04,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:20:04,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:20:04,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:20:04,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:20:04,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:20:04,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:20:04,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:20:04,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:20:04,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:20:04,275 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:20:04,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:20:04,609 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:20:04,613 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:20:04,614 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:20:04,615 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:20:04,616 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_tso.opt.i [2020-10-16 11:20:04,677 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a222d2435/70f97299f3d04c74ba5af3f264933ec8/FLAG981db3121 [2020-10-16 11:20:05,233 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:20:05,234 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe019_tso.opt.i [2020-10-16 11:20:05,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a222d2435/70f97299f3d04c74ba5af3f264933ec8/FLAG981db3121 [2020-10-16 11:20:05,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a222d2435/70f97299f3d04c74ba5af3f264933ec8 [2020-10-16 11:20:05,492 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:20:05,494 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:20:05,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:20:05,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:20:05,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:20:05,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:20:05" (1/1) ... [2020-10-16 11:20:05,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c2a72f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:05, skipping insertion in model container [2020-10-16 11:20:05,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:20:05" (1/1) ... [2020-10-16 11:20:05,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:20:05,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:20:05,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:20:06,092 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:20:06,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:20:06,225 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:20:06,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:06 WrapperNode [2020-10-16 11:20:06,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:20:06,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:20:06,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:20:06,227 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:20:06,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:06" (1/1) ... [2020-10-16 11:20:06,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:06" (1/1) ... [2020-10-16 11:20:06,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:20:06,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:20:06,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:20:06,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:20:06,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:06" (1/1) ... [2020-10-16 11:20:06,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:06" (1/1) ... [2020-10-16 11:20:06,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:06" (1/1) ... [2020-10-16 11:20:06,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:06" (1/1) ... [2020-10-16 11:20:06,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:06" (1/1) ... [2020-10-16 11:20:06,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:06" (1/1) ... [2020-10-16 11:20:06,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:06" (1/1) ... [2020-10-16 11:20:06,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:20:06,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:20:06,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:20:06,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:20:06,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:20:06,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:20:06,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 11:20:06,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:20:06,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:20:06,381 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 11:20:06,382 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 11:20:06,382 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 11:20:06,383 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 11:20:06,383 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 11:20:06,384 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 11:20:06,384 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-16 11:20:06,384 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-16 11:20:06,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 11:20:06,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:20:06,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:20:06,386 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:20:06,807 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:20:06,807 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 11:20:06,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:20:06 BoogieIcfgContainer [2020-10-16 11:20:06,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:20:06,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:20:06,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:20:06,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:20:06,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:20:05" (1/3) ... [2020-10-16 11:20:06,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705295fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:20:06, skipping insertion in model container [2020-10-16 11:20:06,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:06" (2/3) ... [2020-10-16 11:20:06,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705295fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:20:06, skipping insertion in model container [2020-10-16 11:20:06,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:20:06" (3/3) ... [2020-10-16 11:20:06,821 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_tso.opt.i [2020-10-16 11:20:06,834 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:20:06,834 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:20:06,842 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:20:06,843 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:20:06,872 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,872 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,873 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,873 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,874 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,874 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,874 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,875 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,875 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,875 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,876 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,876 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,876 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,877 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,877 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,877 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,878 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,878 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,878 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,879 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,879 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,879 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,879 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,880 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,884 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,884 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,884 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,885 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,892 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,892 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,893 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,893 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,897 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,898 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,898 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,898 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,900 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,901 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,901 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,901 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:06,903 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:20:06,918 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 11:20:06,942 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:20:06,942 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:20:06,942 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:20:06,943 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:20:06,943 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:20:06,943 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:20:06,943 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:20:06,943 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:20:06,958 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:20:06,961 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 81 transitions, 182 flow [2020-10-16 11:20:06,965 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 81 transitions, 182 flow [2020-10-16 11:20:06,967 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-10-16 11:20:07,017 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-10-16 11:20:07,018 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:20:07,024 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-16 11:20:07,028 INFO L117 LiptonReduction]: Number of co-enabled transitions 1822 [2020-10-16 11:20:08,720 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-10-16 11:20:08,955 INFO L132 LiptonReduction]: Checked pairs total: 3343 [2020-10-16 11:20:08,955 INFO L134 LiptonReduction]: Total number of compositions: 67 [2020-10-16 11:20:08,962 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-10-16 11:20:09,016 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-10-16 11:20:09,018 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-10-16 11:20:09,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 11:20:09,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:09,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:09,030 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:09,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:09,036 INFO L82 PathProgramCache]: Analyzing trace with hash -2005095105, now seen corresponding path program 1 times [2020-10-16 11:20:09,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:09,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249602013] [2020-10-16 11:20:09,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:09,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249602013] [2020-10-16 11:20:09,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:09,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:20:09,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44161064] [2020-10-16 11:20:09,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:20:09,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:09,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:20:09,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:20:09,301 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-10-16 11:20:09,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:09,368 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-10-16 11:20:09,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:20:09,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 11:20:09,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:09,395 INFO L225 Difference]: With dead ends: 670 [2020-10-16 11:20:09,395 INFO L226 Difference]: Without dead ends: 526 [2020-10-16 11:20:09,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:20:09,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-10-16 11:20:09,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-10-16 11:20:09,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-10-16 11:20:09,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-10-16 11:20:09,504 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-10-16 11:20:09,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:09,505 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-10-16 11:20:09,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:20:09,506 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-10-16 11:20:09,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:20:09,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:09,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:09,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:20:09,509 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:09,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:09,510 INFO L82 PathProgramCache]: Analyzing trace with hash -2027599793, now seen corresponding path program 1 times [2020-10-16 11:20:09,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:09,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105708573] [2020-10-16 11:20:09,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:09,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:09,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105708573] [2020-10-16 11:20:09,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:09,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:20:09,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206653329] [2020-10-16 11:20:09,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:20:09,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:09,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:20:09,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:20:09,623 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-10-16 11:20:09,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:09,655 INFO L93 Difference]: Finished difference Result 682 states and 2180 transitions. [2020-10-16 11:20:09,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:20:09,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 11:20:09,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:09,661 INFO L225 Difference]: With dead ends: 682 [2020-10-16 11:20:09,661 INFO L226 Difference]: Without dead ends: 394 [2020-10-16 11:20:09,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:20:09,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-16 11:20:09,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-10-16 11:20:09,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-16 11:20:09,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1224 transitions. [2020-10-16 11:20:09,689 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1224 transitions. Word has length 11 [2020-10-16 11:20:09,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:09,689 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1224 transitions. [2020-10-16 11:20:09,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:20:09,689 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1224 transitions. [2020-10-16 11:20:09,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 11:20:09,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:09,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:09,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:20:09,692 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:09,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:09,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1004375926, now seen corresponding path program 1 times [2020-10-16 11:20:09,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:09,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860942584] [2020-10-16 11:20:09,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:09,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860942584] [2020-10-16 11:20:09,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:09,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:20:09,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533982694] [2020-10-16 11:20:09,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:20:09,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:09,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:20:09,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:20:09,789 INFO L87 Difference]: Start difference. First operand 394 states and 1224 transitions. Second operand 3 states. [2020-10-16 11:20:09,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:09,803 INFO L93 Difference]: Finished difference Result 386 states and 1190 transitions. [2020-10-16 11:20:09,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:20:09,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-16 11:20:09,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:09,807 INFO L225 Difference]: With dead ends: 386 [2020-10-16 11:20:09,808 INFO L226 Difference]: Without dead ends: 386 [2020-10-16 11:20:09,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:20:09,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-10-16 11:20:09,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2020-10-16 11:20:09,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-10-16 11:20:09,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1190 transitions. [2020-10-16 11:20:09,827 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1190 transitions. Word has length 12 [2020-10-16 11:20:09,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:09,827 INFO L481 AbstractCegarLoop]: Abstraction has 386 states and 1190 transitions. [2020-10-16 11:20:09,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:20:09,828 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1190 transitions. [2020-10-16 11:20:09,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:20:09,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:09,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:09,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:20:09,830 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:09,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:09,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1071238165, now seen corresponding path program 1 times [2020-10-16 11:20:09,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:09,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342469625] [2020-10-16 11:20:09,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:09,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:09,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342469625] [2020-10-16 11:20:09,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:09,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:20:09,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788154154] [2020-10-16 11:20:09,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:20:09,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:09,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:20:09,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:20:09,873 INFO L87 Difference]: Start difference. First operand 386 states and 1190 transitions. Second operand 3 states. [2020-10-16 11:20:09,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:09,890 INFO L93 Difference]: Finished difference Result 466 states and 1378 transitions. [2020-10-16 11:20:09,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:20:09,891 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-16 11:20:09,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:09,894 INFO L225 Difference]: With dead ends: 466 [2020-10-16 11:20:09,894 INFO L226 Difference]: Without dead ends: 402 [2020-10-16 11:20:09,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:20:09,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-10-16 11:20:09,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 370. [2020-10-16 11:20:09,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-10-16 11:20:09,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1098 transitions. [2020-10-16 11:20:09,909 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1098 transitions. Word has length 13 [2020-10-16 11:20:09,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:09,910 INFO L481 AbstractCegarLoop]: Abstraction has 370 states and 1098 transitions. [2020-10-16 11:20:09,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:20:09,910 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1098 transitions. [2020-10-16 11:20:09,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:20:09,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:09,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:09,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:20:09,913 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:09,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:09,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1070883463, now seen corresponding path program 1 times [2020-10-16 11:20:09,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:09,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631501502] [2020-10-16 11:20:09,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:09,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:09,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631501502] [2020-10-16 11:20:09,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:09,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:20:09,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218329397] [2020-10-16 11:20:09,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:20:09,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:09,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:20:09,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:20:09,953 INFO L87 Difference]: Start difference. First operand 370 states and 1098 transitions. Second operand 3 states. [2020-10-16 11:20:09,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:09,962 INFO L93 Difference]: Finished difference Result 358 states and 1054 transitions. [2020-10-16 11:20:09,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:20:09,963 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-16 11:20:09,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:09,966 INFO L225 Difference]: With dead ends: 358 [2020-10-16 11:20:09,966 INFO L226 Difference]: Without dead ends: 358 [2020-10-16 11:20:09,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:20:09,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-16 11:20:09,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-10-16 11:20:09,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-10-16 11:20:09,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1054 transitions. [2020-10-16 11:20:09,979 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1054 transitions. Word has length 13 [2020-10-16 11:20:09,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:09,980 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 1054 transitions. [2020-10-16 11:20:09,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:20:09,980 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1054 transitions. [2020-10-16 11:20:09,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 11:20:09,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:09,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:09,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:20:09,982 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:09,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:09,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1189218785, now seen corresponding path program 1 times [2020-10-16 11:20:09,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:09,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004760028] [2020-10-16 11:20:09,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:10,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:10,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004760028] [2020-10-16 11:20:10,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:10,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:20:10,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367111383] [2020-10-16 11:20:10,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:20:10,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:10,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:20:10,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:20:10,026 INFO L87 Difference]: Start difference. First operand 358 states and 1054 transitions. Second operand 4 states. [2020-10-16 11:20:10,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:10,047 INFO L93 Difference]: Finished difference Result 514 states and 1482 transitions. [2020-10-16 11:20:10,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:20:10,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-16 11:20:10,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:10,050 INFO L225 Difference]: With dead ends: 514 [2020-10-16 11:20:10,050 INFO L226 Difference]: Without dead ends: 274 [2020-10-16 11:20:10,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:20:10,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-16 11:20:10,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-10-16 11:20:10,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-16 11:20:10,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 775 transitions. [2020-10-16 11:20:10,080 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 775 transitions. Word has length 14 [2020-10-16 11:20:10,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:10,080 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 775 transitions. [2020-10-16 11:20:10,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:20:10,080 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 775 transitions. [2020-10-16 11:20:10,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 11:20:10,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:10,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:10,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:20:10,082 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:10,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:10,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1162350155, now seen corresponding path program 2 times [2020-10-16 11:20:10,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:10,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763420309] [2020-10-16 11:20:10,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:10,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:10,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763420309] [2020-10-16 11:20:10,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:10,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:20:10,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046827606] [2020-10-16 11:20:10,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:20:10,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:10,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:20:10,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:20:10,183 INFO L87 Difference]: Start difference. First operand 274 states and 775 transitions. Second operand 4 states. [2020-10-16 11:20:10,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:10,242 INFO L93 Difference]: Finished difference Result 345 states and 911 transitions. [2020-10-16 11:20:10,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:20:10,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-16 11:20:10,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:10,245 INFO L225 Difference]: With dead ends: 345 [2020-10-16 11:20:10,245 INFO L226 Difference]: Without dead ends: 252 [2020-10-16 11:20:10,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:20:10,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-16 11:20:10,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2020-10-16 11:20:10,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-16 11:20:10,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 675 transitions. [2020-10-16 11:20:10,256 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 675 transitions. Word has length 14 [2020-10-16 11:20:10,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:10,257 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 675 transitions. [2020-10-16 11:20:10,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:20:10,257 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 675 transitions. [2020-10-16 11:20:10,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:20:10,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:10,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:10,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 11:20:10,259 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:10,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:10,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1647463604, now seen corresponding path program 1 times [2020-10-16 11:20:10,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:10,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974317611] [2020-10-16 11:20:10,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:10,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:10,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974317611] [2020-10-16 11:20:10,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:10,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:20:10,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727133441] [2020-10-16 11:20:10,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:20:10,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:10,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:20:10,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:20:10,372 INFO L87 Difference]: Start difference. First operand 252 states and 675 transitions. Second operand 5 states. [2020-10-16 11:20:10,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:10,445 INFO L93 Difference]: Finished difference Result 278 states and 685 transitions. [2020-10-16 11:20:10,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:20:10,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-16 11:20:10,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:10,449 INFO L225 Difference]: With dead ends: 278 [2020-10-16 11:20:10,449 INFO L226 Difference]: Without dead ends: 203 [2020-10-16 11:20:10,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:20:10,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-16 11:20:10,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-10-16 11:20:10,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-16 11:20:10,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 492 transitions. [2020-10-16 11:20:10,474 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 492 transitions. Word has length 15 [2020-10-16 11:20:10,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:10,474 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 492 transitions. [2020-10-16 11:20:10,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:20:10,475 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 492 transitions. [2020-10-16 11:20:10,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 11:20:10,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:10,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:10,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 11:20:10,476 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:10,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:10,477 INFO L82 PathProgramCache]: Analyzing trace with hash -469082430, now seen corresponding path program 1 times [2020-10-16 11:20:10,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:10,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751856329] [2020-10-16 11:20:10,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:10,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751856329] [2020-10-16 11:20:10,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:10,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 11:20:10,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016760341] [2020-10-16 11:20:10,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 11:20:10,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:10,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 11:20:10,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:20:10,578 INFO L87 Difference]: Start difference. First operand 203 states and 492 transitions. Second operand 6 states. [2020-10-16 11:20:10,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:10,652 INFO L93 Difference]: Finished difference Result 200 states and 461 transitions. [2020-10-16 11:20:10,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:20:10,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-16 11:20:10,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:10,655 INFO L225 Difference]: With dead ends: 200 [2020-10-16 11:20:10,655 INFO L226 Difference]: Without dead ends: 162 [2020-10-16 11:20:10,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:20:10,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-16 11:20:10,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-10-16 11:20:10,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-16 11:20:10,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 375 transitions. [2020-10-16 11:20:10,663 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 375 transitions. Word has length 16 [2020-10-16 11:20:10,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:10,664 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 375 transitions. [2020-10-16 11:20:10,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 11:20:10,664 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 375 transitions. [2020-10-16 11:20:10,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 11:20:10,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:10,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:10,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 11:20:10,666 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:10,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:10,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1305224855, now seen corresponding path program 1 times [2020-10-16 11:20:10,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:10,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304591014] [2020-10-16 11:20:10,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:10,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:10,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:10,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304591014] [2020-10-16 11:20:10,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:10,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:20:10,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387166146] [2020-10-16 11:20:10,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:20:10,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:10,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:20:10,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:20:10,722 INFO L87 Difference]: Start difference. First operand 162 states and 375 transitions. Second operand 4 states. [2020-10-16 11:20:10,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:10,740 INFO L93 Difference]: Finished difference Result 194 states and 439 transitions. [2020-10-16 11:20:10,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:20:10,740 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-16 11:20:10,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:10,742 INFO L225 Difference]: With dead ends: 194 [2020-10-16 11:20:10,742 INFO L226 Difference]: Without dead ends: 127 [2020-10-16 11:20:10,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:20:10,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-16 11:20:10,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-10-16 11:20:10,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-16 11:20:10,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-10-16 11:20:10,746 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2020-10-16 11:20:10,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:10,748 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-10-16 11:20:10,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:20:10,748 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-10-16 11:20:10,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 11:20:10,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:10,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:10,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 11:20:10,750 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:10,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:10,750 INFO L82 PathProgramCache]: Analyzing trace with hash 483879941, now seen corresponding path program 2 times [2020-10-16 11:20:10,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:10,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093349873] [2020-10-16 11:20:10,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:10,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:10,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093349873] [2020-10-16 11:20:10,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:10,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:20:10,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072255271] [2020-10-16 11:20:10,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:20:10,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:10,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:20:10,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:20:10,863 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 7 states. [2020-10-16 11:20:10,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:10,925 INFO L93 Difference]: Finished difference Result 120 states and 253 transitions. [2020-10-16 11:20:10,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 11:20:10,926 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-16 11:20:10,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:10,927 INFO L225 Difference]: With dead ends: 120 [2020-10-16 11:20:10,927 INFO L226 Difference]: Without dead ends: 71 [2020-10-16 11:20:10,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-16 11:20:10,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-16 11:20:10,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-16 11:20:10,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-16 11:20:10,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2020-10-16 11:20:10,929 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 18 [2020-10-16 11:20:10,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:10,930 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2020-10-16 11:20:10,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:20:10,930 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2020-10-16 11:20:10,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 11:20:10,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:10,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:10,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 11:20:10,931 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:10,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:10,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1087350585, now seen corresponding path program 1 times [2020-10-16 11:20:10,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:10,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000167953] [2020-10-16 11:20:10,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:10,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:10,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000167953] [2020-10-16 11:20:10,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:10,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:20:10,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412054621] [2020-10-16 11:20:10,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:20:10,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:10,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:20:10,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:20:10,963 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand 4 states. [2020-10-16 11:20:10,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:10,974 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2020-10-16 11:20:10,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:20:10,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-16 11:20:10,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:10,975 INFO L225 Difference]: With dead ends: 70 [2020-10-16 11:20:10,975 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 11:20:10,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:20:10,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 11:20:10,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 11:20:10,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 11:20:10,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 11:20:10,976 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-10-16 11:20:10,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:10,976 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 11:20:10,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:20:10,977 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 11:20:10,977 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 11:20:10,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 11:20:10,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:20:10 BasicIcfg [2020-10-16 11:20:10,981 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:20:10,983 INFO L168 Benchmark]: Toolchain (without parser) took 5489.04 ms. Allocated memory was 142.6 MB in the beginning and 275.8 MB in the end (delta: 133.2 MB). Free memory was 103.4 MB in the beginning and 130.2 MB in the end (delta: -26.7 MB). Peak memory consumption was 106.4 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:10,984 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 142.6 MB. Free memory was 122.9 MB in the beginning and 122.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 11:20:10,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 730.39 ms. Allocated memory was 142.6 MB in the beginning and 205.0 MB in the end (delta: 62.4 MB). Free memory was 103.0 MB in the beginning and 163.1 MB in the end (delta: -60.1 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:10,986 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.58 ms. Allocated memory is still 205.0 MB. Free memory was 163.1 MB in the beginning and 161.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:10,987 INFO L168 Benchmark]: Boogie Preprocessor took 29.16 ms. Allocated memory is still 205.0 MB. Free memory was 161.1 MB in the beginning and 159.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:10,987 INFO L168 Benchmark]: RCFGBuilder took 501.81 ms. Allocated memory is still 205.0 MB. Free memory was 159.1 MB in the beginning and 135.2 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:10,988 INFO L168 Benchmark]: TraceAbstraction took 4169.32 ms. Allocated memory was 205.0 MB in the beginning and 275.8 MB in the end (delta: 70.8 MB). Free memory was 134.6 MB in the beginning and 130.2 MB in the end (delta: 4.4 MB). Peak memory consumption was 75.2 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:10,992 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 142.6 MB. Free memory was 122.9 MB in the beginning and 122.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 730.39 ms. Allocated memory was 142.6 MB in the beginning and 205.0 MB in the end (delta: 62.4 MB). Free memory was 103.0 MB in the beginning and 163.1 MB in the end (delta: -60.1 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.58 ms. Allocated memory is still 205.0 MB. Free memory was 163.1 MB in the beginning and 161.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.16 ms. Allocated memory is still 205.0 MB. Free memory was 161.1 MB in the beginning and 159.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 501.81 ms. Allocated memory is still 205.0 MB. Free memory was 159.1 MB in the beginning and 135.2 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4169.32 ms. Allocated memory was 205.0 MB in the beginning and 275.8 MB in the end (delta: 70.8 MB). Free memory was 134.6 MB in the beginning and 130.2 MB in the end (delta: 4.4 MB). Peak memory consumption was 75.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1203 VarBasedMoverChecksPositive, 62 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 104 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 92 PlacesBefore, 38 PlacesAfterwards, 81 TransitionsBefore, 25 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 67 TotalNumberOfCompositions, 3343 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 258 SDtfs, 237 SDslu, 349 SDs, 0 SdLazy, 196 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred 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: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 34 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 6430 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...