/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 00:51:41,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 00:51:41,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 00:51:41,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 00:51:41,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 00:51:41,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 00:51:41,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 00:51:41,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 00:51:41,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 00:51:41,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 00:51:41,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 00:51:41,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 00:51:41,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 00:51:41,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 00:51:41,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 00:51:41,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 00:51:41,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 00:51:41,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 00:51:41,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 00:51:41,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 00:51:41,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 00:51:41,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 00:51:41,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 00:51:41,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 00:51:41,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-18 00:51:41,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 00:51:41,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 00:51:41,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 00:51:41,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 00:51:41,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 00:51:41,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 00:51:41,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 00:51:41,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 00:51:41,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 00:51:41,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 00:51:41,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 00:51:41,239 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-18 00:51:41,287 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 00:51:41,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 00:51:41,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 00:51:41,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 00:51:41,290 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 00:51:41,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 00:51:41,291 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 00:51:41,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 00:51:41,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 00:51:41,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 00:51:41,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 00:51:41,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 00:51:41,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 00:51:41,293 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 00:51:41,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 00:51:41,294 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 00:51:41,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 00:51:41,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 00:51:41,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 00:51:41,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 00:51:41,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 00:51:41,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 00:51:41,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 00:51:41,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 00:51:41,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 00:51:41,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 00:51:41,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 00:51:41,296 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 00:51:41,296 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 00:51:41,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 00:51:41,297 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 00:51:41,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 00:51:41,744 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 00:51:41,748 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 00:51:41,750 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 00:51:41,750 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 00:51:41,751 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2020-09-18 00:51:41,837 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d9296852/b0fb6d57c6db42f2ab54d6d7565bfcde/FLAGe59cdcf12 [2020-09-18 00:51:42,480 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 00:51:42,481 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2020-09-18 00:51:42,497 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d9296852/b0fb6d57c6db42f2ab54d6d7565bfcde/FLAGe59cdcf12 [2020-09-18 00:51:42,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d9296852/b0fb6d57c6db42f2ab54d6d7565bfcde [2020-09-18 00:51:42,757 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 00:51:42,762 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 00:51:42,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 00:51:42,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 00:51:42,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 00:51:42,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:51:42" (1/1) ... [2020-09-18 00:51:42,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@689fd9e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:42, skipping insertion in model container [2020-09-18 00:51:42,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:51:42" (1/1) ... [2020-09-18 00:51:42,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 00:51:42,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 00:51:43,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 00:51:43,455 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 00:51:43,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 00:51:43,594 INFO L208 MainTranslator]: Completed translation [2020-09-18 00:51:43,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:43 WrapperNode [2020-09-18 00:51:43,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 00:51:43,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 00:51:43,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 00:51:43,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 00:51:43,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:43" (1/1) ... [2020-09-18 00:51:43,635 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:43" (1/1) ... [2020-09-18 00:51:43,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 00:51:43,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 00:51:43,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 00:51:43,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 00:51:43,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:43" (1/1) ... [2020-09-18 00:51:43,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:43" (1/1) ... [2020-09-18 00:51:43,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:43" (1/1) ... [2020-09-18 00:51:43,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:43" (1/1) ... [2020-09-18 00:51:43,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:43" (1/1) ... [2020-09-18 00:51:43,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:43" (1/1) ... [2020-09-18 00:51:43,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:43" (1/1) ... [2020-09-18 00:51:43,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 00:51:43,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 00:51:43,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 00:51:43,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 00:51:43,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 00:51:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 00:51:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-18 00:51:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 00:51:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 00:51:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-18 00:51:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-18 00:51:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-18 00:51:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-18 00:51:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-18 00:51:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-18 00:51:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-18 00:51:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 00:51:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 00:51:43,780 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-18 00:51:44,164 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 00:51:44,164 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-18 00:51:44,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:51:44 BoogieIcfgContainer [2020-09-18 00:51:44,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 00:51:44,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 00:51:44,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 00:51:44,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 00:51:44,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:51:42" (1/3) ... [2020-09-18 00:51:44,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@172cf854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:51:44, skipping insertion in model container [2020-09-18 00:51:44,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:43" (2/3) ... [2020-09-18 00:51:44,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@172cf854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:51:44, skipping insertion in model container [2020-09-18 00:51:44,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:51:44" (3/3) ... [2020-09-18 00:51:44,179 INFO L109 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2020-09-18 00:51:44,190 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 00:51:44,190 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 00:51:44,201 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 00:51:44,202 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 00:51:44,236 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,237 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,237 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,237 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,238 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,238 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,239 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,239 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,239 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,239 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,240 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,240 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,241 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,241 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,241 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,241 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,242 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,242 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,247 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,247 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,247 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,248 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,255 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,255 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,255 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,255 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,260 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,261 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,261 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,261 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:44,288 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-18 00:51:44,316 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 00:51:44,317 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 00:51:44,317 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 00:51:44,317 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 00:51:44,317 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 00:51:44,318 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 00:51:44,318 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 00:51:44,318 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 00:51:44,337 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-18 00:51:44,340 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-18 00:51:44,391 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-18 00:51:44,392 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 00:51:44,398 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-18 00:51:44,401 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-18 00:51:44,424 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-18 00:51:44,424 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 00:51:44,425 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-18 00:51:44,427 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-18 00:51:44,429 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 00:51:45,836 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-18 00:51:46,034 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-09-18 00:51:46,035 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-09-18 00:51:46,040 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-18 00:51:46,069 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-18 00:51:46,071 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-18 00:51:46,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 00:51:46,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:51:46,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:51:46,082 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:51:46,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:51:46,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-09-18 00:51:46,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:51:46,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141100038] [2020-09-18 00:51:46,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:51:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:51:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:51:46,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141100038] [2020-09-18 00:51:46,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:51:46,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 00:51:46,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [602740470] [2020-09-18 00:51:46,369 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:51:46,373 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:51:46,391 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 00:51:46,391 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:51:46,393 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:51:46,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:51:46,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:51:46,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:51:46,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:51:46,416 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-18 00:51:46,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:51:46,465 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-18 00:51:46,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:51:46,468 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-18 00:51:46,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:51:46,488 INFO L225 Difference]: With dead ends: 282 [2020-09-18 00:51:46,488 INFO L226 Difference]: Without dead ends: 218 [2020-09-18 00:51:46,490 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 [2020-09-18 00:51:46,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-18 00:51:46,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-18 00:51:46,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-18 00:51:46,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-18 00:51:46,569 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-18 00:51:46,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:51:46,572 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-18 00:51:46,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:51:46,573 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-18 00:51:46,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-18 00:51:46,574 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:51:46,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:51:46,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 00:51:46,575 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:51:46,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:51:46,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-09-18 00:51:46,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:51:46,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781762164] [2020-09-18 00:51:46,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:51:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:51:46,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:51:46,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781762164] [2020-09-18 00:51:46,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:51:46,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:51:46,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [506465610] [2020-09-18 00:51:46,719 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:51:46,720 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:51:46,724 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-18 00:51:46,724 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:51:46,782 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:51:46,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:51:46,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:51:46,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:51:46,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:51:46,785 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-09-18 00:51:46,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:51:46,819 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-09-18 00:51:46,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 00:51:46,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-18 00:51:46,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:51:46,824 INFO L225 Difference]: With dead ends: 242 [2020-09-18 00:51:46,824 INFO L226 Difference]: Without dead ends: 116 [2020-09-18 00:51:46,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 00:51:46,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-18 00:51:46,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-09-18 00:51:46,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-18 00:51:46,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 284 transitions. [2020-09-18 00:51:46,837 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 284 transitions. Word has length 9 [2020-09-18 00:51:46,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:51:46,838 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 284 transitions. [2020-09-18 00:51:46,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:51:46,838 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 284 transitions. [2020-09-18 00:51:46,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 00:51:46,841 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:51:46,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:51:46,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 00:51:46,841 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:51:46,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:51:46,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-09-18 00:51:46,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:51:46,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369636166] [2020-09-18 00:51:46,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:51:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:51:46,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:51:46,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369636166] [2020-09-18 00:51:46,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:51:46,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 00:51:46,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [60127580] [2020-09-18 00:51:46,907 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:51:46,908 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:51:46,911 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 17 transitions. [2020-09-18 00:51:46,911 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:51:46,917 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:51:46,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:51:46,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:51:46,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:51:46,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:51:46,919 INFO L87 Difference]: Start difference. First operand 116 states and 284 transitions. Second operand 3 states. [2020-09-18 00:51:46,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:51:46,931 INFO L93 Difference]: Finished difference Result 110 states and 265 transitions. [2020-09-18 00:51:46,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:51:46,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-18 00:51:46,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:51:46,933 INFO L225 Difference]: With dead ends: 110 [2020-09-18 00:51:46,933 INFO L226 Difference]: Without dead ends: 110 [2020-09-18 00:51:46,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:51:46,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-18 00:51:46,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-09-18 00:51:46,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-18 00:51:46,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 265 transitions. [2020-09-18 00:51:46,944 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 265 transitions. Word has length 11 [2020-09-18 00:51:46,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:51:46,945 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 265 transitions. [2020-09-18 00:51:46,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:51:46,945 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 265 transitions. [2020-09-18 00:51:46,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-18 00:51:46,946 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:51:46,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:51:46,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-18 00:51:46,947 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:51:46,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:51:46,948 INFO L82 PathProgramCache]: Analyzing trace with hash -142823170, now seen corresponding path program 1 times [2020-09-18 00:51:46,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:51:46,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137059219] [2020-09-18 00:51:46,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:51:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:51:47,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:51:47,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137059219] [2020-09-18 00:51:47,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:51:47,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:51:47,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [153845448] [2020-09-18 00:51:47,006 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:51:47,007 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:51:47,010 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-09-18 00:51:47,010 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:51:47,020 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:51:47,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:51:47,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:51:47,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:51:47,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:51:47,022 INFO L87 Difference]: Start difference. First operand 110 states and 265 transitions. Second operand 3 states. [2020-09-18 00:51:47,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:51:47,034 INFO L93 Difference]: Finished difference Result 104 states and 246 transitions. [2020-09-18 00:51:47,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:51:47,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-18 00:51:47,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:51:47,036 INFO L225 Difference]: With dead ends: 104 [2020-09-18 00:51:47,036 INFO L226 Difference]: Without dead ends: 104 [2020-09-18 00:51:47,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:51:47,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-18 00:51:47,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-18 00:51:47,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-18 00:51:47,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-09-18 00:51:47,045 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 12 [2020-09-18 00:51:47,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:51:47,045 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-09-18 00:51:47,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:51:47,046 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-09-18 00:51:47,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-18 00:51:47,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:51:47,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:51:47,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-18 00:51:47,048 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:51:47,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:51:47,048 INFO L82 PathProgramCache]: Analyzing trace with hash -132602240, now seen corresponding path program 1 times [2020-09-18 00:51:47,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:51:47,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991000824] [2020-09-18 00:51:47,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:51:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:51:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:51:47,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991000824] [2020-09-18 00:51:47,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:51:47,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 00:51:47,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [792894441] [2020-09-18 00:51:47,106 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:51:47,108 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:51:47,111 INFO L274 McrAutomatonBuilder]: Finished intersection with 25 states and 37 transitions. [2020-09-18 00:51:47,111 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:51:47,137 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:51:47,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:51:47,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:51:47,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:51:47,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:51:47,139 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 4 states. [2020-09-18 00:51:47,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:51:47,165 INFO L93 Difference]: Finished difference Result 158 states and 375 transitions. [2020-09-18 00:51:47,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 00:51:47,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-18 00:51:47,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:51:47,167 INFO L225 Difference]: With dead ends: 158 [2020-09-18 00:51:47,167 INFO L226 Difference]: Without dead ends: 104 [2020-09-18 00:51:47,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 00:51:47,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-18 00:51:47,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-18 00:51:47,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-18 00:51:47,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 244 transitions. [2020-09-18 00:51:47,175 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 244 transitions. Word has length 13 [2020-09-18 00:51:47,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:51:47,176 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 244 transitions. [2020-09-18 00:51:47,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:51:47,176 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 244 transitions. [2020-09-18 00:51:47,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-18 00:51:47,177 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:51:47,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:51:47,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-18 00:51:47,178 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:51:47,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:51:47,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 2 times [2020-09-18 00:51:47,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:51:47,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748259573] [2020-09-18 00:51:47,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:51:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:51:47,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:51:47,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748259573] [2020-09-18 00:51:47,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:51:47,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:51:47,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1002119836] [2020-09-18 00:51:47,330 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:51:47,332 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:51:47,334 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-09-18 00:51:47,334 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:51:47,378 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:51:47,398 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:51:47,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:51:47,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:51:47,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:51:47,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:51:47,399 INFO L87 Difference]: Start difference. First operand 104 states and 244 transitions. Second operand 4 states. [2020-09-18 00:51:47,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:51:47,439 INFO L93 Difference]: Finished difference Result 127 states and 275 transitions. [2020-09-18 00:51:47,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 00:51:47,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-18 00:51:47,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:51:47,441 INFO L225 Difference]: With dead ends: 127 [2020-09-18 00:51:47,441 INFO L226 Difference]: Without dead ends: 87 [2020-09-18 00:51:47,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 00:51:47,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-18 00:51:47,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-09-18 00:51:47,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-18 00:51:47,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 183 transitions. [2020-09-18 00:51:47,448 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 183 transitions. Word has length 13 [2020-09-18 00:51:47,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:51:47,448 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 183 transitions. [2020-09-18 00:51:47,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:51:47,448 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 183 transitions. [2020-09-18 00:51:47,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-18 00:51:47,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:51:47,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:51:47,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-18 00:51:47,450 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:51:47,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:51:47,451 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-09-18 00:51:47,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:51:47,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371228167] [2020-09-18 00:51:47,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:51:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:51:47,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:51:47,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371228167] [2020-09-18 00:51:47,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:51:47,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 00:51:47,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [253117998] [2020-09-18 00:51:47,531 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:51:47,535 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:51:47,539 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-09-18 00:51:47,539 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:51:47,645 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3211#(<= ~__unbuffered_cnt~0 0)] [2020-09-18 00:51:47,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-18 00:51:47,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:51:47,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-18 00:51:47,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-18 00:51:47,646 INFO L87 Difference]: Start difference. First operand 87 states and 183 transitions. Second operand 6 states. [2020-09-18 00:51:47,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:51:47,712 INFO L93 Difference]: Finished difference Result 90 states and 175 transitions. [2020-09-18 00:51:47,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-18 00:51:47,713 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-18 00:51:47,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:51:47,713 INFO L225 Difference]: With dead ends: 90 [2020-09-18 00:51:47,714 INFO L226 Difference]: Without dead ends: 65 [2020-09-18 00:51:47,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-18 00:51:47,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-18 00:51:47,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-18 00:51:47,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-18 00:51:47,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 119 transitions. [2020-09-18 00:51:47,721 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 119 transitions. Word has length 14 [2020-09-18 00:51:47,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:51:47,721 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 119 transitions. [2020-09-18 00:51:47,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-18 00:51:47,721 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 119 transitions. [2020-09-18 00:51:47,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-18 00:51:47,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:51:47,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:51:47,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-18 00:51:47,723 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:51:47,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:51:47,723 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-09-18 00:51:47,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:51:47,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515059661] [2020-09-18 00:51:47,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:51:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:51:47,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:51:47,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515059661] [2020-09-18 00:51:47,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:51:47,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-18 00:51:47,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1183116410] [2020-09-18 00:51:47,834 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:51:47,836 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:51:47,839 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-09-18 00:51:47,839 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:51:47,880 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:51:47,902 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3440#(<= ~__unbuffered_cnt~0 0)] [2020-09-18 00:51:47,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-18 00:51:47,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:51:47,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-18 00:51:47,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-18 00:51:47,903 INFO L87 Difference]: Start difference. First operand 65 states and 119 transitions. Second operand 7 states. [2020-09-18 00:51:47,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:51:47,966 INFO L93 Difference]: Finished difference Result 62 states and 111 transitions. [2020-09-18 00:51:47,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-18 00:51:47,966 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-18 00:51:47,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:51:47,967 INFO L225 Difference]: With dead ends: 62 [2020-09-18 00:51:47,967 INFO L226 Difference]: Without dead ends: 54 [2020-09-18 00:51:47,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-18 00:51:47,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-18 00:51:47,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-18 00:51:47,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-18 00:51:47,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-09-18 00:51:47,971 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 15 [2020-09-18 00:51:47,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:51:47,971 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-09-18 00:51:47,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-18 00:51:47,972 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-09-18 00:51:47,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 00:51:47,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:51:47,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:51:47,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-18 00:51:47,973 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:51:47,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:51:47,973 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-09-18 00:51:47,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:51:47,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75584220] [2020-09-18 00:51:47,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:51:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:51:48,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:51:48,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75584220] [2020-09-18 00:51:48,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:51:48,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 00:51:48,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1992200713] [2020-09-18 00:51:48,024 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:51:48,026 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:51:48,030 INFO L274 McrAutomatonBuilder]: Finished intersection with 30 states and 41 transitions. [2020-09-18 00:51:48,031 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:51:48,068 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:51:48,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:51:48,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:51:48,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:51:48,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:51:48,069 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 4 states. [2020-09-18 00:51:48,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:51:48,089 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2020-09-18 00:51:48,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 00:51:48,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-18 00:51:48,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:51:48,090 INFO L225 Difference]: With dead ends: 63 [2020-09-18 00:51:48,090 INFO L226 Difference]: Without dead ends: 35 [2020-09-18 00:51:48,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 00:51:48,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-18 00:51:48,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-18 00:51:48,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-18 00:51:48,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-09-18 00:51:48,094 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-09-18 00:51:48,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:51:48,094 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-09-18 00:51:48,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:51:48,094 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-09-18 00:51:48,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 00:51:48,095 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:51:48,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:51:48,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-18 00:51:48,096 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:51:48,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:51:48,096 INFO L82 PathProgramCache]: Analyzing trace with hash 361560856, now seen corresponding path program 2 times [2020-09-18 00:51:48,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:51:48,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384762014] [2020-09-18 00:51:48,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:51:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:51:48,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:51:48,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384762014] [2020-09-18 00:51:48,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:51:48,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 00:51:48,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [303338091] [2020-09-18 00:51:48,145 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:51:48,147 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:51:48,151 INFO L274 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-09-18 00:51:48,152 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:51:48,189 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:51:48,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:51:48,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:51:48,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:51:48,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:51:48,190 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-09-18 00:51:48,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:51:48,206 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2020-09-18 00:51:48,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 00:51:48,206 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-18 00:51:48,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:51:48,207 INFO L225 Difference]: With dead ends: 48 [2020-09-18 00:51:48,207 INFO L226 Difference]: Without dead ends: 30 [2020-09-18 00:51:48,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 00:51:48,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-18 00:51:48,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-18 00:51:48,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-18 00:51:48,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-09-18 00:51:48,210 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-09-18 00:51:48,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:51:48,210 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-09-18 00:51:48,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:51:48,211 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-09-18 00:51:48,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 00:51:48,211 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:51:48,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:51:48,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-18 00:51:48,212 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:51:48,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:51:48,217 INFO L82 PathProgramCache]: Analyzing trace with hash -550831814, now seen corresponding path program 3 times [2020-09-18 00:51:48,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:51:48,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610311808] [2020-09-18 00:51:48,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:51:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:51:48,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:51:48,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610311808] [2020-09-18 00:51:48,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:51:48,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:51:48,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1964706032] [2020-09-18 00:51:48,296 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:51:48,311 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:51:48,313 INFO L274 McrAutomatonBuilder]: Finished intersection with 24 states and 29 transitions. [2020-09-18 00:51:48,314 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:51:48,328 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:51:48,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:51:48,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:51:48,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:51:48,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:51:48,329 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-09-18 00:51:48,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:51:48,347 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-09-18 00:51:48,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 00:51:48,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-18 00:51:48,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:51:48,348 INFO L225 Difference]: With dead ends: 29 [2020-09-18 00:51:48,348 INFO L226 Difference]: Without dead ends: 0 [2020-09-18 00:51:48,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 00:51:48,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-18 00:51:48,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-18 00:51:48,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-18 00:51:48,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-18 00:51:48,349 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-18 00:51:48,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:51:48,350 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-18 00:51:48,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:51:48,350 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-18 00:51:48,350 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-18 00:51:48,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-18 00:51:48,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:51:48 BasicIcfg [2020-09-18 00:51:48,355 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-18 00:51:48,358 INFO L168 Benchmark]: Toolchain (without parser) took 5598.39 ms. Allocated memory was 139.5 MB in the beginning and 282.1 MB in the end (delta: 142.6 MB). Free memory was 101.1 MB in the beginning and 241.1 MB in the end (delta: -140.1 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-09-18 00:51:48,359 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-18 00:51:48,360 INFO L168 Benchmark]: CACSL2BoogieTranslator took 832.91 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.4 MB in the beginning and 158.9 MB in the end (delta: -58.5 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-09-18 00:51:48,361 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.06 ms. Allocated memory is still 202.4 MB. Free memory was 158.9 MB in the beginning and 157.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-18 00:51:48,361 INFO L168 Benchmark]: Boogie Preprocessor took 32.87 ms. Allocated memory is still 202.4 MB. Free memory was 157.0 MB in the beginning and 155.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-18 00:51:48,362 INFO L168 Benchmark]: RCFGBuilder took 471.99 ms. Allocated memory is still 202.4 MB. Free memory was 155.7 MB in the beginning and 132.9 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-09-18 00:51:48,363 INFO L168 Benchmark]: TraceAbstraction took 4184.95 ms. Allocated memory was 202.4 MB in the beginning and 282.1 MB in the end (delta: 79.7 MB). Free memory was 132.9 MB in the beginning and 241.1 MB in the end (delta: -108.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-18 00:51:48,367 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 832.91 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.4 MB in the beginning and 158.9 MB in the end (delta: -58.5 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 67.06 ms. Allocated memory is still 202.4 MB. Free memory was 158.9 MB in the beginning and 157.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.87 ms. Allocated memory is still 202.4 MB. Free memory was 157.0 MB in the beginning and 155.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 471.99 ms. Allocated memory is still 202.4 MB. Free memory was 155.7 MB in the beginning and 132.9 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4184.95 ms. Allocated memory was 202.4 MB in the beginning and 282.1 MB in the end (delta: 79.7 MB). Free memory was 132.9 MB in the beginning and 241.1 MB in the end (delta: -108.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 657 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 214 SDtfs, 132 SDslu, 261 SDs, 0 SdLazy, 142 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 81 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 4725 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...