/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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:40:32,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:40:32,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:40:32,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:40:32,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:40:32,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:40:32,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:40:32,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:40:32,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:40:32,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:40:32,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:40:32,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:40:32,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:40:32,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:40:32,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:40:32,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:40:32,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:40:32,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:40:32,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:40:32,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:40:32,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:40:32,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:40:32,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:40:32,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:40:32,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:40:32,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:40:32,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:40:32,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:40:32,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:40:32,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:40:32,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:40:32,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:40:32,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:40:32,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:40:32,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:40:32,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:40:32,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:40:32,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:40:32,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:40:32,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:40:32,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:40:32,235 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2020-04-18 02:40:32,257 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:40:32,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:40:32,259 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:40:32,259 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:40:32,259 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:40:32,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:40:32,260 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:40:32,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:40:32,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:40:32,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:40:32,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:40:32,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:40:32,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:40:32,262 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:40:32,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:40:32,262 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:40:32,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:40:32,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:40:32,263 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:40:32,263 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:40:32,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:40:32,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:40:32,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:40:32,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:40:32,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:40:32,264 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:40:32,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:40:32,265 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:40:32,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:40:32,265 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:40:32,570 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:40:32,584 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:40:32,590 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:40:32,591 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:40:32,592 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:40:32,593 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc.i [2020-04-18 02:40:32,670 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bef46baeb/c84feff6de9449679ce8b2add3b6050c/FLAG3ca03aa38 [2020-04-18 02:40:33,226 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:40:33,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc.i [2020-04-18 02:40:33,240 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bef46baeb/c84feff6de9449679ce8b2add3b6050c/FLAG3ca03aa38 [2020-04-18 02:40:33,476 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bef46baeb/c84feff6de9449679ce8b2add3b6050c [2020-04-18 02:40:33,485 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:40:33,508 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:40:33,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:40:33,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:40:33,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:40:33,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:40:33" (1/1) ... [2020-04-18 02:40:33,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5df2e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:33, skipping insertion in model container [2020-04-18 02:40:33,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:40:33" (1/1) ... [2020-04-18 02:40:33,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:40:33,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:40:34,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:40:34,094 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:40:34,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:40:34,221 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:40:34,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:34 WrapperNode [2020-04-18 02:40:34,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:40:34,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:40:34,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:40:34,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:40:34,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:34" (1/1) ... [2020-04-18 02:40:34,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:34" (1/1) ... [2020-04-18 02:40:34,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:40:34,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:40:34,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:40:34,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:40:34,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:34" (1/1) ... [2020-04-18 02:40:34,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:34" (1/1) ... [2020-04-18 02:40:34,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:34" (1/1) ... [2020-04-18 02:40:34,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:34" (1/1) ... [2020-04-18 02:40:34,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:34" (1/1) ... [2020-04-18 02:40:34,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:34" (1/1) ... [2020-04-18 02:40:34,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:34" (1/1) ... [2020-04-18 02:40:34,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:40:34,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:40:34,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:40:34,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:40:34,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:40:34,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:40:34,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:40:34,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:40:34,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:40:34,374 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:40:34,374 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:40:34,375 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:40:34,375 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:40:34,375 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:40:34,375 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:40:34,375 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 02:40:34,375 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 02:40:34,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:40:34,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:40:34,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:40:34,377 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:40:34,841 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:40:34,841 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:40:34,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:40:34 BoogieIcfgContainer [2020-04-18 02:40:34,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:40:34,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:40:34,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:40:34,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:40:34,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:40:33" (1/3) ... [2020-04-18 02:40:34,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7122bc90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:40:34, skipping insertion in model container [2020-04-18 02:40:34,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:34" (2/3) ... [2020-04-18 02:40:34,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7122bc90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:40:34, skipping insertion in model container [2020-04-18 02:40:34,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:40:34" (3/3) ... [2020-04-18 02:40:34,863 INFO L109 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc.i [2020-04-18 02:40:34,874 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:40:34,874 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:40:34,885 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:40:34,886 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:40:34,919 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,919 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,919 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,920 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,920 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,920 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,921 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,921 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,921 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,922 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,922 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,922 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,923 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,923 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,923 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,924 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,924 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,924 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,925 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,925 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,925 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,925 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,926 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,926 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,930 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,930 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,931 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,931 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,938 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,939 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,939 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,939 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,941 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,942 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,942 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,942 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,947 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,947 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,947 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,947 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:34,962 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 02:40:34,978 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:40:34,979 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:40:34,979 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:40:34,979 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:40:34,979 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:40:34,979 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:40:34,979 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:40:34,980 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:40:34,994 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 82 transitions, 184 flow [2020-04-18 02:40:34,996 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 93 places, 82 transitions, 184 flow [2020-04-18 02:40:35,040 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-04-18 02:40:35,040 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:40:35,046 INFO L80 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 02:40:35,050 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 93 places, 82 transitions, 184 flow [2020-04-18 02:40:35,076 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-04-18 02:40:35,076 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:40:35,077 INFO L80 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 02:40:35,081 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-04-18 02:40:35,082 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:40:36,577 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-18 02:40:36,655 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2807 [2020-04-18 02:40:36,656 INFO L214 etLargeBlockEncoding]: Total number of compositions: 63 [2020-04-18 02:40:36,661 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-04-18 02:40:36,736 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-04-18 02:40:36,739 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-04-18 02:40:36,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:40:36,750 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:40:36,751 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:40:36,752 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:40:36,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:40:36,762 INFO L82 PathProgramCache]: Analyzing trace with hash 91051740, now seen corresponding path program 1 times [2020-04-18 02:40:36,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:40:36,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844266390] [2020-04-18 02:40:36,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:40:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:40:37,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:40:37,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844266390] [2020-04-18 02:40:37,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:40:37,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:40:37,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050712471] [2020-04-18 02:40:37,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 02:40:37,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:40:37,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 02:40:37,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:40:37,111 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-04-18 02:40:37,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:40:37,179 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-04-18 02:40:37,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 02:40:37,181 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-18 02:40:37,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:40:37,211 INFO L225 Difference]: With dead ends: 850 [2020-04-18 02:40:37,212 INFO L226 Difference]: Without dead ends: 706 [2020-04-18 02:40:37,213 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:40:37,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-04-18 02:40:37,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-04-18 02:40:37,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-04-18 02:40:37,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-04-18 02:40:37,348 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-04-18 02:40:37,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:40:37,349 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-04-18 02:40:37,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 02:40:37,349 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-04-18 02:40:37,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:40:37,352 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:40:37,353 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:40:37,353 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:40:37,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:40:37,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1472387704, now seen corresponding path program 1 times [2020-04-18 02:40:37,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:40:37,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222294073] [2020-04-18 02:40:37,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:40:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:40:37,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:40:37,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222294073] [2020-04-18 02:40:37,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:40:37,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:40:37,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048400843] [2020-04-18 02:40:37,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:40:37,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:40:37,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:40:37,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:40:37,530 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-04-18 02:40:37,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:40:37,595 INFO L93 Difference]: Finished difference Result 778 states and 2592 transitions. [2020-04-18 02:40:37,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:40:37,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:40:37,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:40:37,606 INFO L225 Difference]: With dead ends: 778 [2020-04-18 02:40:37,607 INFO L226 Difference]: Without dead ends: 634 [2020-04-18 02:40:37,608 INFO L678 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 [2020-04-18 02:40:37,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-04-18 02:40:37,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2020-04-18 02:40:37,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-04-18 02:40:37,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2148 transitions. [2020-04-18 02:40:37,662 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2148 transitions. Word has length 11 [2020-04-18 02:40:37,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:40:37,663 INFO L479 AbstractCegarLoop]: Abstraction has 634 states and 2148 transitions. [2020-04-18 02:40:37,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:40:37,663 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2148 transitions. [2020-04-18 02:40:37,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:40:37,671 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:40:37,671 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:40:37,671 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:40:37,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:40:37,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1606888751, now seen corresponding path program 1 times [2020-04-18 02:40:37,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:40:37,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981593123] [2020-04-18 02:40:37,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:40:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:40:37,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:40:37,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981593123] [2020-04-18 02:40:37,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:40:37,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:40:37,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933014814] [2020-04-18 02:40:37,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:40:37,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:40:37,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:40:37,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:40:37,781 INFO L87 Difference]: Start difference. First operand 634 states and 2148 transitions. Second operand 4 states. [2020-04-18 02:40:37,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:40:37,829 INFO L93 Difference]: Finished difference Result 688 states and 2256 transitions. [2020-04-18 02:40:37,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:40:37,829 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:40:37,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:40:37,834 INFO L225 Difference]: With dead ends: 688 [2020-04-18 02:40:37,835 INFO L226 Difference]: Without dead ends: 580 [2020-04-18 02:40:37,835 INFO L678 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 [2020-04-18 02:40:37,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-04-18 02:40:37,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2020-04-18 02:40:37,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-04-18 02:40:37,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1932 transitions. [2020-04-18 02:40:37,861 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1932 transitions. Word has length 12 [2020-04-18 02:40:37,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:40:37,862 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 1932 transitions. [2020-04-18 02:40:37,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:40:37,862 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1932 transitions. [2020-04-18 02:40:37,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:40:37,864 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:40:37,864 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:40:37,864 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:40:37,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:40:37,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1718865431, now seen corresponding path program 1 times [2020-04-18 02:40:37,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:40:37,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630872222] [2020-04-18 02:40:37,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:40:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:40:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:40:37,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630872222] [2020-04-18 02:40:37,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:40:37,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:40:37,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033885292] [2020-04-18 02:40:37,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:40:37,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:40:37,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:40:37,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:40:37,967 INFO L87 Difference]: Start difference. First operand 580 states and 1932 transitions. Second operand 5 states. [2020-04-18 02:40:38,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:40:38,041 INFO L93 Difference]: Finished difference Result 751 states and 2457 transitions. [2020-04-18 02:40:38,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:40:38,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 02:40:38,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:40:38,044 INFO L225 Difference]: With dead ends: 751 [2020-04-18 02:40:38,044 INFO L226 Difference]: Without dead ends: 358 [2020-04-18 02:40:38,045 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:40:38,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-04-18 02:40:38,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-04-18 02:40:38,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-04-18 02:40:38,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1128 transitions. [2020-04-18 02:40:38,058 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1128 transitions. Word has length 13 [2020-04-18 02:40:38,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:40:38,058 INFO L479 AbstractCegarLoop]: Abstraction has 358 states and 1128 transitions. [2020-04-18 02:40:38,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:40:38,059 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1128 transitions. [2020-04-18 02:40:38,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:40:38,060 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:40:38,060 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:40:38,060 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:40:38,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:40:38,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1081404616, now seen corresponding path program 1 times [2020-04-18 02:40:38,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:40:38,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281816036] [2020-04-18 02:40:38,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:40:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:40:38,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:40:38,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281816036] [2020-04-18 02:40:38,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:40:38,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:40:38,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043159537] [2020-04-18 02:40:38,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:40:38,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:40:38,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:40:38,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:40:38,150 INFO L87 Difference]: Start difference. First operand 358 states and 1128 transitions. Second operand 5 states. [2020-04-18 02:40:38,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:40:38,224 INFO L93 Difference]: Finished difference Result 496 states and 1517 transitions. [2020-04-18 02:40:38,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:40:38,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 02:40:38,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:40:38,227 INFO L225 Difference]: With dead ends: 496 [2020-04-18 02:40:38,227 INFO L226 Difference]: Without dead ends: 262 [2020-04-18 02:40:38,227 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:40:38,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-04-18 02:40:38,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2020-04-18 02:40:38,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-04-18 02:40:38,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 771 transitions. [2020-04-18 02:40:38,237 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 771 transitions. Word has length 14 [2020-04-18 02:40:38,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:40:38,238 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 771 transitions. [2020-04-18 02:40:38,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:40:38,238 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 771 transitions. [2020-04-18 02:40:38,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:40:38,239 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:40:38,239 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:40:38,239 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:40:38,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:40:38,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1257194017, now seen corresponding path program 1 times [2020-04-18 02:40:38,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:40:38,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92559494] [2020-04-18 02:40:38,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:40:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:40:38,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:40:38,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92559494] [2020-04-18 02:40:38,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:40:38,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:40:38,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673453983] [2020-04-18 02:40:38,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:40:38,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:40:38,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:40:38,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:40:38,355 INFO L87 Difference]: Start difference. First operand 262 states and 771 transitions. Second operand 4 states. [2020-04-18 02:40:38,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:40:38,402 INFO L93 Difference]: Finished difference Result 319 states and 873 transitions. [2020-04-18 02:40:38,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:40:38,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-18 02:40:38,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:40:38,406 INFO L225 Difference]: With dead ends: 319 [2020-04-18 02:40:38,406 INFO L226 Difference]: Without dead ends: 238 [2020-04-18 02:40:38,406 INFO L678 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 [2020-04-18 02:40:38,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-04-18 02:40:38,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-04-18 02:40:38,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-04-18 02:40:38,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 659 transitions. [2020-04-18 02:40:38,415 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 659 transitions. Word has length 15 [2020-04-18 02:40:38,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:40:38,415 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 659 transitions. [2020-04-18 02:40:38,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:40:38,416 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 659 transitions. [2020-04-18 02:40:38,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 02:40:38,417 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:40:38,417 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:40:38,417 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:40:38,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:40:38,417 INFO L82 PathProgramCache]: Analyzing trace with hash -857649028, now seen corresponding path program 1 times [2020-04-18 02:40:38,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:40:38,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667789443] [2020-04-18 02:40:38,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:40:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:40:38,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:40:38,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667789443] [2020-04-18 02:40:38,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:40:38,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:40:38,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932491501] [2020-04-18 02:40:38,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:40:38,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:40:38,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:40:38,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:40:38,531 INFO L87 Difference]: Start difference. First operand 238 states and 659 transitions. Second operand 5 states. [2020-04-18 02:40:38,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:40:38,581 INFO L93 Difference]: Finished difference Result 247 states and 617 transitions. [2020-04-18 02:40:38,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:40:38,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-04-18 02:40:38,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:40:38,583 INFO L225 Difference]: With dead ends: 247 [2020-04-18 02:40:38,583 INFO L226 Difference]: Without dead ends: 182 [2020-04-18 02:40:38,583 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:40:38,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-18 02:40:38,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-18 02:40:38,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-18 02:40:38,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 443 transitions. [2020-04-18 02:40:38,590 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 443 transitions. Word has length 16 [2020-04-18 02:40:38,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:40:38,590 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 443 transitions. [2020-04-18 02:40:38,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:40:38,590 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 443 transitions. [2020-04-18 02:40:38,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:40:38,591 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:40:38,591 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:40:38,591 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:40:38,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:40:38,592 INFO L82 PathProgramCache]: Analyzing trace with hash -981483084, now seen corresponding path program 1 times [2020-04-18 02:40:38,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:40:38,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243078896] [2020-04-18 02:40:38,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:40:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:40:38,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:40:38,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243078896] [2020-04-18 02:40:38,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:40:38,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 02:40:38,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801078781] [2020-04-18 02:40:38,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:40:38,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:40:38,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:40:38,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:40:38,677 INFO L87 Difference]: Start difference. First operand 182 states and 443 transitions. Second operand 6 states. [2020-04-18 02:40:38,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:40:38,755 INFO L93 Difference]: Finished difference Result 165 states and 373 transitions. [2020-04-18 02:40:38,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:40:38,755 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-04-18 02:40:38,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:40:38,756 INFO L225 Difference]: With dead ends: 165 [2020-04-18 02:40:38,757 INFO L226 Difference]: Without dead ends: 132 [2020-04-18 02:40:38,757 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:40:38,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-04-18 02:40:38,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-04-18 02:40:38,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-04-18 02:40:38,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 295 transitions. [2020-04-18 02:40:38,761 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 295 transitions. Word has length 17 [2020-04-18 02:40:38,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:40:38,762 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 295 transitions. [2020-04-18 02:40:38,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:40:38,762 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 295 transitions. [2020-04-18 02:40:38,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 02:40:38,763 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:40:38,763 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:40:38,763 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:40:38,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:40:38,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1311703103, now seen corresponding path program 1 times [2020-04-18 02:40:38,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:40:38,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232535784] [2020-04-18 02:40:38,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:40:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:40:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:40:38,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232535784] [2020-04-18 02:40:38,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:40:38,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 02:40:38,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258457691] [2020-04-18 02:40:38,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 02:40:38,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:40:38,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 02:40:38,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:40:38,859 INFO L87 Difference]: Start difference. First operand 132 states and 295 transitions. Second operand 7 states. [2020-04-18 02:40:38,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:40:38,935 INFO L93 Difference]: Finished difference Result 121 states and 271 transitions. [2020-04-18 02:40:38,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 02:40:38,935 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-18 02:40:38,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:40:38,936 INFO L225 Difference]: With dead ends: 121 [2020-04-18 02:40:38,937 INFO L226 Difference]: Without dead ends: 112 [2020-04-18 02:40:38,939 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:40:38,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-04-18 02:40:38,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-04-18 02:40:38,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-04-18 02:40:38,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 255 transitions. [2020-04-18 02:40:38,944 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 255 transitions. Word has length 19 [2020-04-18 02:40:38,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:40:38,944 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 255 transitions. [2020-04-18 02:40:38,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 02:40:38,944 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 255 transitions. [2020-04-18 02:40:38,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 02:40:38,945 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:40:38,945 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:40:38,945 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:40:38,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:40:38,946 INFO L82 PathProgramCache]: Analyzing trace with hash 188961609, now seen corresponding path program 1 times [2020-04-18 02:40:38,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:40:38,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789162381] [2020-04-18 02:40:38,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:40:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:40:39,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:40:39,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789162381] [2020-04-18 02:40:39,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:40:39,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:40:39,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880329255] [2020-04-18 02:40:39,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:40:39,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:40:39,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:40:39,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:40:39,015 INFO L87 Difference]: Start difference. First operand 112 states and 255 transitions. Second operand 5 states. [2020-04-18 02:40:39,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:40:39,051 INFO L93 Difference]: Finished difference Result 146 states and 329 transitions. [2020-04-18 02:40:39,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:40:39,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-04-18 02:40:39,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:40:39,053 INFO L225 Difference]: With dead ends: 146 [2020-04-18 02:40:39,053 INFO L226 Difference]: Without dead ends: 52 [2020-04-18 02:40:39,053 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:40:39,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-04-18 02:40:39,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-04-18 02:40:39,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-04-18 02:40:39,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2020-04-18 02:40:39,057 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 21 [2020-04-18 02:40:39,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:40:39,057 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2020-04-18 02:40:39,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:40:39,058 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-04-18 02:40:39,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 02:40:39,058 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:40:39,058 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:40:39,059 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:40:39,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:40:39,059 INFO L82 PathProgramCache]: Analyzing trace with hash -62971415, now seen corresponding path program 2 times [2020-04-18 02:40:39,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:40:39,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015045573] [2020-04-18 02:40:39,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:40:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:40:39,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:40:39,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015045573] [2020-04-18 02:40:39,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:40:39,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:40:39,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241649076] [2020-04-18 02:40:39,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:40:39,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:40:39,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:40:39,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:40:39,122 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand 5 states. [2020-04-18 02:40:39,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:40:39,150 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2020-04-18 02:40:39,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:40:39,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-04-18 02:40:39,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:40:39,151 INFO L225 Difference]: With dead ends: 51 [2020-04-18 02:40:39,151 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:40:39,152 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:40:39,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:40:39,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:40:39,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:40:39,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:40:39,152 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-04-18 02:40:39,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:40:39,153 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:40:39,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:40:39,153 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:40:39,154 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:40:39,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:40:39 BasicIcfg [2020-04-18 02:40:39,158 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:40:39,160 INFO L168 Benchmark]: Toolchain (without parser) took 5673.69 ms. Allocated memory was 144.2 MB in the beginning and 251.7 MB in the end (delta: 107.5 MB). Free memory was 100.7 MB in the beginning and 86.3 MB in the end (delta: 14.5 MB). Peak memory consumption was 122.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:40:39,161 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 02:40:39,167 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.28 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 98.9 MB in the beginning and 157.8 MB in the end (delta: -58.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:40:39,168 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.98 ms. Allocated memory is still 201.3 MB. Free memory was 157.8 MB in the beginning and 155.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:40:39,168 INFO L168 Benchmark]: Boogie Preprocessor took 27.65 ms. Allocated memory is still 201.3 MB. Free memory was 155.8 MB in the beginning and 154.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:40:39,170 INFO L168 Benchmark]: RCFGBuilder took 532.20 ms. Allocated memory is still 201.3 MB. Free memory was 153.7 MB in the beginning and 130.2 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:40:39,174 INFO L168 Benchmark]: TraceAbstraction took 4305.06 ms. Allocated memory was 201.3 MB in the beginning and 251.7 MB in the end (delta: 50.3 MB). Free memory was 129.5 MB in the beginning and 86.3 MB in the end (delta: 43.3 MB). Peak memory consumption was 93.6 MB. Max. memory is 7.1 GB. [2020-04-18 02:40:39,178 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 713.28 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 98.9 MB in the beginning and 157.8 MB in the end (delta: -58.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 66.98 ms. Allocated memory is still 201.3 MB. Free memory was 157.8 MB in the beginning and 155.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.65 ms. Allocated memory is still 201.3 MB. Free memory was 155.8 MB in the beginning and 154.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 532.20 ms. Allocated memory is still 201.3 MB. Free memory was 153.7 MB in the beginning and 130.2 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4305.06 ms. Allocated memory was 201.3 MB in the beginning and 251.7 MB in the end (delta: 50.3 MB). Free memory was 129.5 MB in the beginning and 86.3 MB in the end (delta: 43.3 MB). Peak memory consumption was 93.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 93 ProgramPointsBefore, 39 ProgramPointsAfterwards, 82 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 933 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2807 CheckedPairsTotal, 63 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 267 SDtfs, 328 SDslu, 473 SDs, 0 SdLazy, 205 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred 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, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 6930 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...