/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/safe018_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-14 22:55:05,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-14 22:55:05,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-14 22:55:05,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-14 22:55:05,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-14 22:55:05,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-14 22:55:05,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-14 22:55:05,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-14 22:55:05,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-14 22:55:05,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-14 22:55:05,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-14 22:55:05,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-14 22:55:05,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-14 22:55:05,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-14 22:55:05,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-14 22:55:05,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-14 22:55:05,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-14 22:55:05,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-14 22:55:05,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-14 22:55:05,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-14 22:55:05,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-14 22:55:05,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-14 22:55:05,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-14 22:55:05,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-14 22:55:05,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-14 22:55:05,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-14 22:55:05,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-14 22:55:05,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-14 22:55:05,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-14 22:55:05,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-14 22:55:05,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-14 22:55:05,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-14 22:55:05,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-14 22:55:05,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-14 22:55:05,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-14 22:55:05,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-14 22:55:05,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-14 22:55:05,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-14 22:55:05,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-14 22:55:05,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-14 22:55:05,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-14 22:55:05,678 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-14 22:55:05,703 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-14 22:55:05,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-14 22:55:05,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-14 22:55:05,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-14 22:55:05,705 INFO L138 SettingsManager]: * Use SBE=true [2020-09-14 22:55:05,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-14 22:55:05,706 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-14 22:55:05,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-14 22:55:05,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-14 22:55:05,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-14 22:55:05,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-14 22:55:05,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-14 22:55:05,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-14 22:55:05,707 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-14 22:55:05,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-14 22:55:05,708 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-14 22:55:05,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-14 22:55:05,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-14 22:55:05,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-14 22:55:05,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-14 22:55:05,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-14 22:55:05,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 22:55:05,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-14 22:55:05,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-14 22:55:05,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-14 22:55:05,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-14 22:55:05,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-14 22:55:05,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-14 22:55:05,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-14 22:55:05,710 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-14 22:55:06,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-14 22:55:06,247 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-14 22:55:06,254 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-14 22:55:06,256 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-14 22:55:06,256 INFO L275 PluginConnector]: CDTParser initialized [2020-09-14 22:55:06,257 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i [2020-09-14 22:55:06,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5dac258e/db6b259ad79040b19f5d8b04c887bba5/FLAG427003711 [2020-09-14 22:55:07,000 INFO L306 CDTParser]: Found 1 translation units. [2020-09-14 22:55:07,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i [2020-09-14 22:55:07,029 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5dac258e/db6b259ad79040b19f5d8b04c887bba5/FLAG427003711 [2020-09-14 22:55:07,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5dac258e/db6b259ad79040b19f5d8b04c887bba5 [2020-09-14 22:55:07,265 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-14 22:55:07,272 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-14 22:55:07,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-14 22:55:07,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-14 22:55:07,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-14 22:55:07,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 10:55:07" (1/1) ... [2020-09-14 22:55:07,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30ef32e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:55:07, skipping insertion in model container [2020-09-14 22:55:07,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 10:55:07" (1/1) ... [2020-09-14 22:55:07,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-14 22:55:07,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-14 22:55:07,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 22:55:07,925 INFO L203 MainTranslator]: Completed pre-run [2020-09-14 22:55:08,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 22:55:08,075 INFO L208 MainTranslator]: Completed translation [2020-09-14 22:55:08,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:55:08 WrapperNode [2020-09-14 22:55:08,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-14 22:55:08,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-14 22:55:08,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-14 22:55:08,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-14 22:55:08,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:55:08" (1/1) ... [2020-09-14 22:55:08,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:55:08" (1/1) ... [2020-09-14 22:55:08,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-14 22:55:08,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-14 22:55:08,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-14 22:55:08,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-14 22:55:08,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:55:08" (1/1) ... [2020-09-14 22:55:08,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:55:08" (1/1) ... [2020-09-14 22:55:08,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:55:08" (1/1) ... [2020-09-14 22:55:08,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:55:08" (1/1) ... [2020-09-14 22:55:08,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:55:08" (1/1) ... [2020-09-14 22:55:08,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:55:08" (1/1) ... [2020-09-14 22:55:08,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:55:08" (1/1) ... [2020-09-14 22:55:08,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-14 22:55:08,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-14 22:55:08,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-14 22:55:08,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-14 22:55:08,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:55:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 22:55:08,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-14 22:55:08,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-14 22:55:08,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-14 22:55:08,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-14 22:55:08,274 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-14 22:55:08,274 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-14 22:55:08,274 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-14 22:55:08,274 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-14 22:55:08,274 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-14 22:55:08,275 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-14 22:55:08,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-14 22:55:08,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-14 22:55:08,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-14 22:55:08,278 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-14 22:55:08,699 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-14 22:55:08,699 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-14 22:55:08,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 10:55:08 BoogieIcfgContainer [2020-09-14 22:55:08,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-14 22:55:08,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-14 22:55:08,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-14 22:55:08,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-14 22:55:08,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 10:55:07" (1/3) ... [2020-09-14 22:55:08,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a2ae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 10:55:08, skipping insertion in model container [2020-09-14 22:55:08,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:55:08" (2/3) ... [2020-09-14 22:55:08,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a2ae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 10:55:08, skipping insertion in model container [2020-09-14 22:55:08,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 10:55:08" (3/3) ... [2020-09-14 22:55:08,715 INFO L109 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc.i [2020-09-14 22:55:08,727 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-14 22:55:08,728 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-14 22:55:08,738 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-14 22:55:08,739 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-14 22:55:08,775 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,775 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,776 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,776 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,776 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,777 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,777 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,777 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,778 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,778 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,778 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,779 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,779 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,779 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,779 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,780 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,780 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,780 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,785 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,786 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,786 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,786 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,795 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,795 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,795 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,796 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,798 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,799 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,799 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,799 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:55:08,825 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-14 22:55:08,854 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 22:55:08,854 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 22:55:08,854 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 22:55:08,854 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 22:55:08,854 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 22:55:08,855 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 22:55:08,855 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 22:55:08,855 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 22:55:08,874 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-14 22:55:08,877 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-14 22:55:08,924 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-14 22:55:08,925 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 22:55:08,931 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-14 22:55:08,934 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-14 22:55:08,967 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-14 22:55:08,968 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 22:55:08,968 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-14 22:55:08,971 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-09-14 22:55:08,974 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 22:55:10,691 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1996 [2020-09-14 22:55:10,691 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-09-14 22:55:10,696 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-09-14 22:55:10,720 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-09-14 22:55:10,723 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-09-14 22:55:10,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-14 22:55:10,733 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:55:10,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:55:10,734 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:55:10,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:55:10,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1153400973, now seen corresponding path program 1 times [2020-09-14 22:55:10,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:55:10,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130560212] [2020-09-14 22:55:10,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:55:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:55:11,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:55:11,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130560212] [2020-09-14 22:55:11,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:55:11,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 22:55:11,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372468854] [2020-09-14 22:55:11,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 22:55:11,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:55:11,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 22:55:11,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:55:11,036 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-09-14 22:55:11,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:55:11,092 INFO L93 Difference]: Finished difference Result 214 states and 593 transitions. [2020-09-14 22:55:11,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 22:55:11,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-14 22:55:11,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:55:11,112 INFO L225 Difference]: With dead ends: 214 [2020-09-14 22:55:11,112 INFO L226 Difference]: Without dead ends: 166 [2020-09-14 22:55:11,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:55:11,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-14 22:55:11,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-09-14 22:55:11,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-14 22:55:11,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 441 transitions. [2020-09-14 22:55:11,185 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 441 transitions. Word has length 8 [2020-09-14 22:55:11,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:55:11,187 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 441 transitions. [2020-09-14 22:55:11,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 22:55:11,187 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 441 transitions. [2020-09-14 22:55:11,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-14 22:55:11,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:55:11,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:55:11,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-14 22:55:11,190 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:55:11,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:55:11,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1395710546, now seen corresponding path program 1 times [2020-09-14 22:55:11,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:55:11,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775109429] [2020-09-14 22:55:11,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:55:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:55:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:55:11,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775109429] [2020-09-14 22:55:11,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:55:11,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:55:11,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000461734] [2020-09-14 22:55:11,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:55:11,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:55:11,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:55:11,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:55:11,347 INFO L87 Difference]: Start difference. First operand 166 states and 441 transitions. Second operand 4 states. [2020-09-14 22:55:11,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:55:11,408 INFO L93 Difference]: Finished difference Result 202 states and 516 transitions. [2020-09-14 22:55:11,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 22:55:11,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-14 22:55:11,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:55:11,412 INFO L225 Difference]: With dead ends: 202 [2020-09-14 22:55:11,412 INFO L226 Difference]: Without dead ends: 130 [2020-09-14 22:55:11,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:55:11,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-09-14 22:55:11,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-09-14 22:55:11,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-09-14 22:55:11,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 322 transitions. [2020-09-14 22:55:11,442 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 322 transitions. Word has length 9 [2020-09-14 22:55:11,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:55:11,442 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 322 transitions. [2020-09-14 22:55:11,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:55:11,443 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 322 transitions. [2020-09-14 22:55:11,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-14 22:55:11,449 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:55:11,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:55:11,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-14 22:55:11,449 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:55:11,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:55:11,450 INFO L82 PathProgramCache]: Analyzing trace with hash -316797667, now seen corresponding path program 1 times [2020-09-14 22:55:11,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:55:11,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218647690] [2020-09-14 22:55:11,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:55:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:55:11,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:55:11,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218647690] [2020-09-14 22:55:11,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:55:11,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 22:55:11,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759197327] [2020-09-14 22:55:11,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 22:55:11,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:55:11,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 22:55:11,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:55:11,546 INFO L87 Difference]: Start difference. First operand 130 states and 322 transitions. Second operand 3 states. [2020-09-14 22:55:11,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:55:11,555 INFO L93 Difference]: Finished difference Result 124 states and 303 transitions. [2020-09-14 22:55:11,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 22:55:11,556 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-14 22:55:11,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:55:11,557 INFO L225 Difference]: With dead ends: 124 [2020-09-14 22:55:11,557 INFO L226 Difference]: Without dead ends: 124 [2020-09-14 22:55:11,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:55:11,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-14 22:55:11,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-09-14 22:55:11,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-14 22:55:11,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-09-14 22:55:11,568 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 10 [2020-09-14 22:55:11,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:55:11,569 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-09-14 22:55:11,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 22:55:11,569 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-09-14 22:55:11,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-14 22:55:11,570 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:55:11,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:55:11,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-14 22:55:11,571 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:55:11,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:55:11,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1215717328, now seen corresponding path program 1 times [2020-09-14 22:55:11,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:55:11,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036077837] [2020-09-14 22:55:11,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:55:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:55:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:55:11,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036077837] [2020-09-14 22:55:11,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:55:11,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:55:11,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654882938] [2020-09-14 22:55:11,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:55:11,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:55:11,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:55:11,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:55:11,653 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 4 states. [2020-09-14 22:55:11,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:55:11,679 INFO L93 Difference]: Finished difference Result 142 states and 336 transitions. [2020-09-14 22:55:11,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 22:55:11,681 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-14 22:55:11,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:55:11,682 INFO L225 Difference]: With dead ends: 142 [2020-09-14 22:55:11,683 INFO L226 Difference]: Without dead ends: 64 [2020-09-14 22:55:11,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:55:11,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-14 22:55:11,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-09-14 22:55:11,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-14 22:55:11,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 137 transitions. [2020-09-14 22:55:11,688 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 137 transitions. Word has length 11 [2020-09-14 22:55:11,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:55:11,688 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 137 transitions. [2020-09-14 22:55:11,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:55:11,689 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 137 transitions. [2020-09-14 22:55:11,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-14 22:55:11,689 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:55:11,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:55:11,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-14 22:55:11,690 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:55:11,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:55:11,691 INFO L82 PathProgramCache]: Analyzing trace with hash 500064419, now seen corresponding path program 1 times [2020-09-14 22:55:11,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:55:11,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286560219] [2020-09-14 22:55:11,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:55:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:55:11,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:55:11,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286560219] [2020-09-14 22:55:11,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:55:11,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:55:11,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679190366] [2020-09-14 22:55:11,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:55:11,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:55:11,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:55:11,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:55:11,824 INFO L87 Difference]: Start difference. First operand 64 states and 137 transitions. Second operand 4 states. [2020-09-14 22:55:11,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:55:11,872 INFO L93 Difference]: Finished difference Result 77 states and 150 transitions. [2020-09-14 22:55:11,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:55:11,873 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-14 22:55:11,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:55:11,874 INFO L225 Difference]: With dead ends: 77 [2020-09-14 22:55:11,874 INFO L226 Difference]: Without dead ends: 56 [2020-09-14 22:55:11,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:55:11,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-14 22:55:11,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-14 22:55:11,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-14 22:55:11,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 109 transitions. [2020-09-14 22:55:11,881 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 109 transitions. Word has length 12 [2020-09-14 22:55:11,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:55:11,881 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 109 transitions. [2020-09-14 22:55:11,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:55:11,881 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 109 transitions. [2020-09-14 22:55:11,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-14 22:55:11,882 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:55:11,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:55:11,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-14 22:55:11,883 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:55:11,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:55:11,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1337478729, now seen corresponding path program 1 times [2020-09-14 22:55:11,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:55:11,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590733470] [2020-09-14 22:55:11,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:55:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:55:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:55:11,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590733470] [2020-09-14 22:55:11,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:55:11,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:55:11,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752021542] [2020-09-14 22:55:11,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 22:55:11,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:55:11,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 22:55:11,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:55:11,973 INFO L87 Difference]: Start difference. First operand 56 states and 109 transitions. Second operand 5 states. [2020-09-14 22:55:12,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:55:12,016 INFO L93 Difference]: Finished difference Result 57 states and 99 transitions. [2020-09-14 22:55:12,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 22:55:12,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-14 22:55:12,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:55:12,018 INFO L225 Difference]: With dead ends: 57 [2020-09-14 22:55:12,018 INFO L226 Difference]: Without dead ends: 42 [2020-09-14 22:55:12,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-14 22:55:12,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-14 22:55:12,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-14 22:55:12,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-14 22:55:12,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 69 transitions. [2020-09-14 22:55:12,022 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 69 transitions. Word has length 13 [2020-09-14 22:55:12,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:55:12,022 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 69 transitions. [2020-09-14 22:55:12,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 22:55:12,022 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 69 transitions. [2020-09-14 22:55:12,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-14 22:55:12,023 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:55:12,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:55:12,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-14 22:55:12,024 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:55:12,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:55:12,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1451530590, now seen corresponding path program 1 times [2020-09-14 22:55:12,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:55:12,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59930211] [2020-09-14 22:55:12,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:55:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:55:12,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:55:12,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59930211] [2020-09-14 22:55:12,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:55:12,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 22:55:12,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836080186] [2020-09-14 22:55:12,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 22:55:12,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:55:12,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 22:55:12,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-14 22:55:12,110 INFO L87 Difference]: Start difference. First operand 42 states and 69 transitions. Second operand 6 states. [2020-09-14 22:55:12,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:55:12,161 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-09-14 22:55:12,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-14 22:55:12,161 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-14 22:55:12,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:55:12,162 INFO L225 Difference]: With dead ends: 39 [2020-09-14 22:55:12,162 INFO L226 Difference]: Without dead ends: 33 [2020-09-14 22:55:12,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-14 22:55:12,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-14 22:55:12,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-14 22:55:12,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-14 22:55:12,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-09-14 22:55:12,165 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2020-09-14 22:55:12,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:55:12,166 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-09-14 22:55:12,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 22:55:12,166 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-09-14 22:55:12,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-14 22:55:12,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:55:12,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:55:12,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-14 22:55:12,167 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:55:12,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:55:12,168 INFO L82 PathProgramCache]: Analyzing trace with hash -958438309, now seen corresponding path program 1 times [2020-09-14 22:55:12,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:55:12,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516336306] [2020-09-14 22:55:12,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:55:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:55:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:55:12,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516336306] [2020-09-14 22:55:12,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:55:12,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:55:12,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308659379] [2020-09-14 22:55:12,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:55:12,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:55:12,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:55:12,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:55:12,253 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-09-14 22:55:12,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:55:12,272 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-09-14 22:55:12,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 22:55:12,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-09-14 22:55:12,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:55:12,273 INFO L225 Difference]: With dead ends: 32 [2020-09-14 22:55:12,273 INFO L226 Difference]: Without dead ends: 0 [2020-09-14 22:55:12,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:55:12,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-14 22:55:12,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-14 22:55:12,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-14 22:55:12,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-14 22:55:12,276 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-09-14 22:55:12,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:55:12,276 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-14 22:55:12,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:55:12,276 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-14 22:55:12,277 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-14 22:55:12,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-14 22:55:12,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 10:55:12 BasicIcfg [2020-09-14 22:55:12,288 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-14 22:55:12,303 INFO L168 Benchmark]: Toolchain (without parser) took 5023.24 ms. Allocated memory was 147.8 MB in the beginning and 245.4 MB in the end (delta: 97.5 MB). Free memory was 102.0 MB in the beginning and 159.1 MB in the end (delta: -57.1 MB). Peak memory consumption was 40.5 MB. Max. memory is 7.1 GB. [2020-09-14 22:55:12,304 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-14 22:55:12,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 803.80 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 101.6 MB in the beginning and 160.3 MB in the end (delta: -58.7 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-09-14 22:55:12,309 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.40 ms. Allocated memory is still 203.9 MB. Free memory was 160.3 MB in the beginning and 158.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-14 22:55:12,310 INFO L168 Benchmark]: Boogie Preprocessor took 41.60 ms. Allocated memory is still 203.9 MB. Free memory was 158.4 MB in the beginning and 157.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-14 22:55:12,313 INFO L168 Benchmark]: RCFGBuilder took 523.28 ms. Allocated memory is still 203.9 MB. Free memory was 157.0 MB in the beginning and 135.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-09-14 22:55:12,314 INFO L168 Benchmark]: TraceAbstraction took 3581.84 ms. Allocated memory was 203.9 MB in the beginning and 245.4 MB in the end (delta: 41.4 MB). Free memory was 134.5 MB in the beginning and 159.1 MB in the end (delta: -24.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-09-14 22:55:12,329 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 803.80 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 101.6 MB in the beginning and 160.3 MB in the end (delta: -58.7 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 62.40 ms. Allocated memory is still 203.9 MB. Free memory was 160.3 MB in the beginning and 158.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.60 ms. Allocated memory is still 203.9 MB. Free memory was 158.4 MB in the beginning and 157.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 523.28 ms. Allocated memory is still 203.9 MB. Free memory was 157.0 MB in the beginning and 135.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3581.84 ms. Allocated memory was 203.9 MB in the beginning and 245.4 MB in the end (delta: 41.4 MB). Free memory was 134.5 MB in the beginning and 159.1 MB in the end (delta: -24.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 77 ProgramPointsBefore, 30 ProgramPointsAfterwards, 69 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 630 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1996 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 125 SDtfs, 114 SDslu, 139 SDs, 0 SdLazy, 101 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 3147 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...