/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 12:58:01,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 12:58:01,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 12:58:01,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 12:58:01,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 12:58:01,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 12:58:01,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 12:58:01,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 12:58:01,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 12:58:01,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 12:58:01,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 12:58:01,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 12:58:01,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 12:58:01,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 12:58:01,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 12:58:01,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 12:58:01,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 12:58:01,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 12:58:01,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 12:58:01,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 12:58:01,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 12:58:01,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 12:58:01,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 12:58:01,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 12:58:01,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 12:58:01,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 12:58:01,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 12:58:01,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 12:58:01,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 12:58:01,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 12:58:01,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 12:58:01,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 12:58:01,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 12:58:01,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 12:58:01,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 12:58:01,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 12:58:01,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 12:58:01,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 12:58:01,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 12:58:01,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 12:58:01,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 12:58:01,115 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-09 12:58:01,137 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 12:58:01,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 12:58:01,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 12:58:01,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 12:58:01,139 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 12:58:01,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 12:58:01,140 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 12:58:01,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 12:58:01,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 12:58:01,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 12:58:01,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 12:58:01,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 12:58:01,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 12:58:01,141 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 12:58:01,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 12:58:01,142 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 12:58:01,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 12:58:01,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 12:58:01,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 12:58:01,142 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 12:58:01,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 12:58:01,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 12:58:01,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 12:58:01,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 12:58:01,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 12:58:01,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-09 12:58:01,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 12:58:01,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-09 12:58:01,144 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-09 12:58:01,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 12:58:01,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 12:58:01,486 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 12:58:01,489 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 12:58:01,491 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 12:58:01,491 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 12:58:01,492 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.opt.i [2020-10-09 12:58:01,548 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/436ee236f/d6564df86a6145deaddcf191391dbe99/FLAG8289a588a [2020-10-09 12:58:02,079 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 12:58:02,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.opt.i [2020-10-09 12:58:02,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/436ee236f/d6564df86a6145deaddcf191391dbe99/FLAG8289a588a [2020-10-09 12:58:02,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/436ee236f/d6564df86a6145deaddcf191391dbe99 [2020-10-09 12:58:02,366 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 12:58:02,367 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 12:58:02,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 12:58:02,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 12:58:02,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 12:58:02,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 12:58:02" (1/1) ... [2020-10-09 12:58:02,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21f1b8e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:58:02, skipping insertion in model container [2020-10-09 12:58:02,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 12:58:02" (1/1) ... [2020-10-09 12:58:02,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 12:58:02,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 12:58:02,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 12:58:03,006 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 12:58:03,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 12:58:03,124 INFO L208 MainTranslator]: Completed translation [2020-10-09 12:58:03,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:58:03 WrapperNode [2020-10-09 12:58:03,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 12:58:03,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 12:58:03,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 12:58:03,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 12:58:03,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:58:03" (1/1) ... [2020-10-09 12:58:03,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:58:03" (1/1) ... [2020-10-09 12:58:03,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 12:58:03,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 12:58:03,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 12:58:03,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 12:58:03,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:58:03" (1/1) ... [2020-10-09 12:58:03,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:58:03" (1/1) ... [2020-10-09 12:58:03,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:58:03" (1/1) ... [2020-10-09 12:58:03,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:58:03" (1/1) ... [2020-10-09 12:58:03,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:58:03" (1/1) ... [2020-10-09 12:58:03,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:58:03" (1/1) ... [2020-10-09 12:58:03,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:58:03" (1/1) ... [2020-10-09 12:58:03,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 12:58:03,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 12:58:03,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 12:58:03,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 12:58:03,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:58:03" (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 [2020-10-09 12:58:03,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 12:58:03,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 12:58:03,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 12:58:03,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 12:58:03,277 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 12:58:03,282 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 12:58:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 12:58:03,284 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 12:58:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-09 12:58:03,285 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-09 12:58:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-09 12:58:03,285 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-09 12:58:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 12:58:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 12:58:03,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 12:58:03,288 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 12:58:03,686 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 12:58:03,687 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 12:58:03,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 12:58:03 BoogieIcfgContainer [2020-10-09 12:58:03,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 12:58:03,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 12:58:03,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 12:58:03,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 12:58:03,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 12:58:02" (1/3) ... [2020-10-09 12:58:03,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2f3271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 12:58:03, skipping insertion in model container [2020-10-09 12:58:03,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:58:03" (2/3) ... [2020-10-09 12:58:03,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2f3271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 12:58:03, skipping insertion in model container [2020-10-09 12:58:03,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 12:58:03" (3/3) ... [2020-10-09 12:58:03,699 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_pso.opt.i [2020-10-09 12:58:03,712 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-09 12:58:03,712 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 12:58:03,720 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 12:58:03,721 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 12:58:03,751 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,752 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,752 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,752 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,753 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,753 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,754 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,754 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,755 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,755 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,755 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,756 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,756 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,756 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,756 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,757 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,757 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,757 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,757 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,758 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,758 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,758 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,762 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,763 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,763 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,763 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,771 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,771 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,771 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,771 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,777 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,777 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,777 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,778 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,781 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,781 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,781 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,781 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:58:03,797 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-09 12:58:03,817 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 12:58:03,818 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 12:58:03,818 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 12:58:03,818 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 12:58:03,818 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 12:58:03,818 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 12:58:03,818 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 12:58:03,818 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 12:58:03,831 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 12:58:03,834 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 81 transitions, 182 flow [2020-10-09 12:58:03,836 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 81 transitions, 182 flow [2020-10-09 12:58:03,839 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-10-09 12:58:03,888 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-10-09 12:58:03,888 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 12:58:03,894 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-09 12:58:03,899 INFO L117 LiptonReduction]: Number of co-enabled transitions 1822 [2020-10-09 12:58:05,585 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-10-09 12:58:05,851 INFO L132 LiptonReduction]: Checked pairs total: 3343 [2020-10-09 12:58:05,852 INFO L134 LiptonReduction]: Total number of compositions: 67 [2020-10-09 12:58:05,858 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-10-09 12:58:05,904 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-10-09 12:58:05,906 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-10-09 12:58:05,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 12:58:05,917 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:58:05,918 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:58:05,918 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:58:05,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:58:05,924 INFO L82 PathProgramCache]: Analyzing trace with hash -2005095105, now seen corresponding path program 1 times [2020-10-09 12:58:05,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:58:05,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072345828] [2020-10-09 12:58:05,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:58:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:58:06,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:58:06,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072345828] [2020-10-09 12:58:06,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:58:06,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-09 12:58:06,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807719005] [2020-10-09 12:58:06,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 12:58:06,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:58:06,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 12:58:06,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 12:58:06,176 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-10-09 12:58:06,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:58:06,250 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-10-09 12:58:06,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 12:58:06,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-09 12:58:06,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:58:06,283 INFO L225 Difference]: With dead ends: 670 [2020-10-09 12:58:06,283 INFO L226 Difference]: Without dead ends: 526 [2020-10-09 12:58:06,284 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 12:58:06,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-10-09 12:58:06,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-10-09 12:58:06,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-10-09 12:58:06,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-10-09 12:58:06,382 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-10-09 12:58:06,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:58:06,383 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-10-09 12:58:06,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 12:58:06,384 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-10-09 12:58:06,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 12:58:06,387 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:58:06,387 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:58:06,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-09 12:58:06,387 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:58:06,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:58:06,388 INFO L82 PathProgramCache]: Analyzing trace with hash -2027599793, now seen corresponding path program 1 times [2020-10-09 12:58:06,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:58:06,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686484031] [2020-10-09 12:58:06,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:58:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:58:06,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:58:06,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686484031] [2020-10-09 12:58:06,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:58:06,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 12:58:06,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273937758] [2020-10-09 12:58:06,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 12:58:06,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:58:06,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 12:58:06,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 12:58:06,511 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-10-09 12:58:06,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:58:06,546 INFO L93 Difference]: Finished difference Result 682 states and 2180 transitions. [2020-10-09 12:58:06,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-09 12:58:06,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-09 12:58:06,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:58:06,551 INFO L225 Difference]: With dead ends: 682 [2020-10-09 12:58:06,552 INFO L226 Difference]: Without dead ends: 394 [2020-10-09 12:58:06,552 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 12:58:06,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-09 12:58:06,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-10-09 12:58:06,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-09 12:58:06,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1224 transitions. [2020-10-09 12:58:06,580 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1224 transitions. Word has length 11 [2020-10-09 12:58:06,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:58:06,581 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1224 transitions. [2020-10-09 12:58:06,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 12:58:06,581 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1224 transitions. [2020-10-09 12:58:06,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 12:58:06,583 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:58:06,583 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:58:06,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-09 12:58:06,584 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:58:06,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:58:06,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1004375926, now seen corresponding path program 1 times [2020-10-09 12:58:06,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:58:06,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673412620] [2020-10-09 12:58:06,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:58:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:58:06,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:58:06,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673412620] [2020-10-09 12:58:06,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:58:06,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-09 12:58:06,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890647723] [2020-10-09 12:58:06,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 12:58:06,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:58:06,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 12:58:06,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 12:58:06,634 INFO L87 Difference]: Start difference. First operand 394 states and 1224 transitions. Second operand 3 states. [2020-10-09 12:58:06,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:58:06,648 INFO L93 Difference]: Finished difference Result 386 states and 1190 transitions. [2020-10-09 12:58:06,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 12:58:06,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-09 12:58:06,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:58:06,653 INFO L225 Difference]: With dead ends: 386 [2020-10-09 12:58:06,653 INFO L226 Difference]: Without dead ends: 386 [2020-10-09 12:58:06,654 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 12:58:06,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-10-09 12:58:06,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2020-10-09 12:58:06,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-10-09 12:58:06,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1190 transitions. [2020-10-09 12:58:06,672 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1190 transitions. Word has length 12 [2020-10-09 12:58:06,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:58:06,672 INFO L481 AbstractCegarLoop]: Abstraction has 386 states and 1190 transitions. [2020-10-09 12:58:06,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 12:58:06,673 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1190 transitions. [2020-10-09 12:58:06,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 12:58:06,675 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:58:06,675 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:58:06,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-09 12:58:06,676 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:58:06,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:58:06,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1071238165, now seen corresponding path program 1 times [2020-10-09 12:58:06,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:58:06,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123478575] [2020-10-09 12:58:06,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:58:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:58:06,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:58:06,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123478575] [2020-10-09 12:58:06,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:58:06,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 12:58:06,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61063557] [2020-10-09 12:58:06,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 12:58:06,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:58:06,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 12:58:06,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 12:58:06,734 INFO L87 Difference]: Start difference. First operand 386 states and 1190 transitions. Second operand 3 states. [2020-10-09 12:58:06,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:58:06,755 INFO L93 Difference]: Finished difference Result 466 states and 1378 transitions. [2020-10-09 12:58:06,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 12:58:06,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-09 12:58:06,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:58:06,759 INFO L225 Difference]: With dead ends: 466 [2020-10-09 12:58:06,760 INFO L226 Difference]: Without dead ends: 402 [2020-10-09 12:58:06,760 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 12:58:06,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-10-09 12:58:06,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 370. [2020-10-09 12:58:06,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-10-09 12:58:06,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1098 transitions. [2020-10-09 12:58:06,775 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1098 transitions. Word has length 13 [2020-10-09 12:58:06,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:58:06,775 INFO L481 AbstractCegarLoop]: Abstraction has 370 states and 1098 transitions. [2020-10-09 12:58:06,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 12:58:06,775 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1098 transitions. [2020-10-09 12:58:06,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 12:58:06,780 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:58:06,781 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:58:06,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-09 12:58:06,781 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:58:06,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:58:06,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1070883463, now seen corresponding path program 1 times [2020-10-09 12:58:06,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:58:06,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431085658] [2020-10-09 12:58:06,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:58:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:58:06,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:58:06,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431085658] [2020-10-09 12:58:06,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:58:06,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-09 12:58:06,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825651670] [2020-10-09 12:58:06,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 12:58:06,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:58:06,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 12:58:06,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 12:58:06,870 INFO L87 Difference]: Start difference. First operand 370 states and 1098 transitions. Second operand 3 states. [2020-10-09 12:58:06,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:58:06,880 INFO L93 Difference]: Finished difference Result 358 states and 1054 transitions. [2020-10-09 12:58:06,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 12:58:06,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-09 12:58:06,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:58:06,883 INFO L225 Difference]: With dead ends: 358 [2020-10-09 12:58:06,883 INFO L226 Difference]: Without dead ends: 358 [2020-10-09 12:58:06,884 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 12:58:06,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-09 12:58:06,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-10-09 12:58:06,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-10-09 12:58:06,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1054 transitions. [2020-10-09 12:58:06,897 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1054 transitions. Word has length 13 [2020-10-09 12:58:06,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:58:06,897 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 1054 transitions. [2020-10-09 12:58:06,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 12:58:06,898 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1054 transitions. [2020-10-09 12:58:06,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 12:58:06,899 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:58:06,899 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:58:06,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-09 12:58:06,899 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:58:06,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:58:06,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1189218785, now seen corresponding path program 1 times [2020-10-09 12:58:06,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:58:06,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385665911] [2020-10-09 12:58:06,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:58:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:58:06,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:58:06,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385665911] [2020-10-09 12:58:06,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:58:06,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 12:58:06,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878490523] [2020-10-09 12:58:06,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 12:58:06,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:58:06,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 12:58:06,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 12:58:06,979 INFO L87 Difference]: Start difference. First operand 358 states and 1054 transitions. Second operand 4 states. [2020-10-09 12:58:07,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:58:07,014 INFO L93 Difference]: Finished difference Result 514 states and 1482 transitions. [2020-10-09 12:58:07,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-09 12:58:07,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-09 12:58:07,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:58:07,018 INFO L225 Difference]: With dead ends: 514 [2020-10-09 12:58:07,018 INFO L226 Difference]: Without dead ends: 274 [2020-10-09 12:58:07,018 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 12:58:07,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-09 12:58:07,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-10-09 12:58:07,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-09 12:58:07,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 775 transitions. [2020-10-09 12:58:07,028 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 775 transitions. Word has length 14 [2020-10-09 12:58:07,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:58:07,028 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 775 transitions. [2020-10-09 12:58:07,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 12:58:07,028 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 775 transitions. [2020-10-09 12:58:07,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 12:58:07,029 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:58:07,030 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:58:07,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-09 12:58:07,030 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:58:07,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:58:07,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1162350155, now seen corresponding path program 2 times [2020-10-09 12:58:07,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:58:07,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369027117] [2020-10-09 12:58:07,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:58:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:58:07,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:58:07,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369027117] [2020-10-09 12:58:07,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:58:07,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 12:58:07,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754275170] [2020-10-09 12:58:07,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 12:58:07,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:58:07,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 12:58:07,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 12:58:07,122 INFO L87 Difference]: Start difference. First operand 274 states and 775 transitions. Second operand 4 states. [2020-10-09 12:58:07,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:58:07,181 INFO L93 Difference]: Finished difference Result 345 states and 911 transitions. [2020-10-09 12:58:07,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 12:58:07,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-09 12:58:07,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:58:07,184 INFO L225 Difference]: With dead ends: 345 [2020-10-09 12:58:07,185 INFO L226 Difference]: Without dead ends: 252 [2020-10-09 12:58:07,187 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 12:58:07,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-09 12:58:07,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2020-10-09 12:58:07,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-09 12:58:07,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 675 transitions. [2020-10-09 12:58:07,198 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 675 transitions. Word has length 14 [2020-10-09 12:58:07,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:58:07,199 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 675 transitions. [2020-10-09 12:58:07,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 12:58:07,199 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 675 transitions. [2020-10-09 12:58:07,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 12:58:07,201 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:58:07,201 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:58:07,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-09 12:58:07,201 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:58:07,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:58:07,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1647463604, now seen corresponding path program 1 times [2020-10-09 12:58:07,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:58:07,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980036886] [2020-10-09 12:58:07,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:58:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:58:07,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:58:07,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980036886] [2020-10-09 12:58:07,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:58:07,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 12:58:07,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932099681] [2020-10-09 12:58:07,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 12:58:07,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:58:07,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 12:58:07,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 12:58:07,330 INFO L87 Difference]: Start difference. First operand 252 states and 675 transitions. Second operand 5 states. [2020-10-09 12:58:07,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:58:07,399 INFO L93 Difference]: Finished difference Result 278 states and 685 transitions. [2020-10-09 12:58:07,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 12:58:07,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-09 12:58:07,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:58:07,403 INFO L225 Difference]: With dead ends: 278 [2020-10-09 12:58:07,403 INFO L226 Difference]: Without dead ends: 203 [2020-10-09 12:58:07,404 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-09 12:58:07,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-09 12:58:07,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-10-09 12:58:07,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-09 12:58:07,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 492 transitions. [2020-10-09 12:58:07,429 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 492 transitions. Word has length 15 [2020-10-09 12:58:07,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:58:07,430 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 492 transitions. [2020-10-09 12:58:07,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 12:58:07,430 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 492 transitions. [2020-10-09 12:58:07,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-09 12:58:07,431 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:58:07,431 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:58:07,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-09 12:58:07,432 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:58:07,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:58:07,432 INFO L82 PathProgramCache]: Analyzing trace with hash -469082430, now seen corresponding path program 1 times [2020-10-09 12:58:07,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:58:07,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895392354] [2020-10-09 12:58:07,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:58:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:58:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:58:07,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895392354] [2020-10-09 12:58:07,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:58:07,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-09 12:58:07,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066243058] [2020-10-09 12:58:07,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-09 12:58:07,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:58:07,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-09 12:58:07,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-09 12:58:07,561 INFO L87 Difference]: Start difference. First operand 203 states and 492 transitions. Second operand 6 states. [2020-10-09 12:58:07,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:58:07,625 INFO L93 Difference]: Finished difference Result 200 states and 461 transitions. [2020-10-09 12:58:07,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 12:58:07,625 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-09 12:58:07,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:58:07,627 INFO L225 Difference]: With dead ends: 200 [2020-10-09 12:58:07,627 INFO L226 Difference]: Without dead ends: 162 [2020-10-09 12:58:07,627 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-09 12:58:07,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-09 12:58:07,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-10-09 12:58:07,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-09 12:58:07,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 375 transitions. [2020-10-09 12:58:07,634 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 375 transitions. Word has length 16 [2020-10-09 12:58:07,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:58:07,635 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 375 transitions. [2020-10-09 12:58:07,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-09 12:58:07,635 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 375 transitions. [2020-10-09 12:58:07,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-09 12:58:07,636 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:58:07,636 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:58:07,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-09 12:58:07,636 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:58:07,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:58:07,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1305224855, now seen corresponding path program 1 times [2020-10-09 12:58:07,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:58:07,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168364230] [2020-10-09 12:58:07,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:58:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:58:07,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:58:07,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168364230] [2020-10-09 12:58:07,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:58:07,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 12:58:07,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792896110] [2020-10-09 12:58:07,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 12:58:07,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:58:07,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 12:58:07,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 12:58:07,675 INFO L87 Difference]: Start difference. First operand 162 states and 375 transitions. Second operand 4 states. [2020-10-09 12:58:07,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:58:07,694 INFO L93 Difference]: Finished difference Result 194 states and 439 transitions. [2020-10-09 12:58:07,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 12:58:07,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-09 12:58:07,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:58:07,698 INFO L225 Difference]: With dead ends: 194 [2020-10-09 12:58:07,698 INFO L226 Difference]: Without dead ends: 127 [2020-10-09 12:58:07,698 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 12:58:07,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-09 12:58:07,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-10-09 12:58:07,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-09 12:58:07,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-10-09 12:58:07,702 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2020-10-09 12:58:07,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:58:07,704 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-10-09 12:58:07,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 12:58:07,704 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-10-09 12:58:07,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-09 12:58:07,705 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:58:07,707 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:58:07,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-09 12:58:07,708 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:58:07,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:58:07,708 INFO L82 PathProgramCache]: Analyzing trace with hash 483879941, now seen corresponding path program 2 times [2020-10-09 12:58:07,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:58:07,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188485034] [2020-10-09 12:58:07,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:58:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:58:07,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:58:07,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188485034] [2020-10-09 12:58:07,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:58:07,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 12:58:07,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545555636] [2020-10-09 12:58:07,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 12:58:07,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:58:07,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 12:58:07,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-09 12:58:07,803 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 7 states. [2020-10-09 12:58:07,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:58:07,873 INFO L93 Difference]: Finished difference Result 120 states and 253 transitions. [2020-10-09 12:58:07,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-09 12:58:07,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-09 12:58:07,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:58:07,874 INFO L225 Difference]: With dead ends: 120 [2020-10-09 12:58:07,874 INFO L226 Difference]: Without dead ends: 71 [2020-10-09 12:58:07,875 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-09 12:58:07,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-09 12:58:07,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-09 12:58:07,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-09 12:58:07,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2020-10-09 12:58:07,878 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 18 [2020-10-09 12:58:07,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:58:07,879 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2020-10-09 12:58:07,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 12:58:07,879 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2020-10-09 12:58:07,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-09 12:58:07,880 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:58:07,880 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:58:07,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-09 12:58:07,883 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:58:07,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:58:07,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1087350585, now seen corresponding path program 1 times [2020-10-09 12:58:07,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:58:07,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403112675] [2020-10-09 12:58:07,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:58:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:58:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:58:07,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403112675] [2020-10-09 12:58:07,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:58:07,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 12:58:07,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058634992] [2020-10-09 12:58:07,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 12:58:07,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:58:07,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 12:58:07,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 12:58:07,946 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand 4 states. [2020-10-09 12:58:07,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:58:07,964 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2020-10-09 12:58:07,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-09 12:58:07,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-09 12:58:07,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:58:07,964 INFO L225 Difference]: With dead ends: 70 [2020-10-09 12:58:07,964 INFO L226 Difference]: Without dead ends: 0 [2020-10-09 12:58:07,965 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 12:58:07,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-09 12:58:07,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-09 12:58:07,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-09 12:58:07,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-09 12:58:07,966 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-10-09 12:58:07,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:58:07,966 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-09 12:58:07,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 12:58:07,966 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-09 12:58:07,966 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-09 12:58:07,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-09 12:58:07,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 12:58:07 BasicIcfg [2020-10-09 12:58:07,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 12:58:07,972 INFO L168 Benchmark]: Toolchain (without parser) took 5604.54 ms. Allocated memory was 248.0 MB in the beginning and 433.6 MB in the end (delta: 185.6 MB). Free memory was 200.6 MB in the beginning and 343.7 MB in the end (delta: -143.1 MB). Peak memory consumption was 42.5 MB. Max. memory is 14.2 GB. [2020-10-09 12:58:07,972 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 248.0 MB. Free memory is still 221.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 12:58:07,973 INFO L168 Benchmark]: CACSL2BoogieTranslator took 757.23 ms. Allocated memory was 248.0 MB in the beginning and 303.6 MB in the end (delta: 55.6 MB). Free memory was 200.6 MB in the beginning and 256.9 MB in the end (delta: -56.3 MB). Peak memory consumption was 27.1 MB. Max. memory is 14.2 GB. [2020-10-09 12:58:07,974 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.61 ms. Allocated memory is still 303.6 MB. Free memory was 256.9 MB in the beginning and 254.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 12:58:07,975 INFO L168 Benchmark]: Boogie Preprocessor took 28.60 ms. Allocated memory is still 303.6 MB. Free memory was 254.4 MB in the beginning and 251.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 12:58:07,975 INFO L168 Benchmark]: RCFGBuilder took 483.94 ms. Allocated memory is still 303.6 MB. Free memory was 251.8 MB in the beginning and 227.4 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-09 12:58:07,976 INFO L168 Benchmark]: TraceAbstraction took 4279.37 ms. Allocated memory was 303.6 MB in the beginning and 433.6 MB in the end (delta: 130.0 MB). Free memory was 227.4 MB in the beginning and 343.7 MB in the end (delta: -116.3 MB). Peak memory consumption was 13.7 MB. Max. memory is 14.2 GB. [2020-10-09 12:58:07,980 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 248.0 MB. Free memory is still 221.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 757.23 ms. Allocated memory was 248.0 MB in the beginning and 303.6 MB in the end (delta: 55.6 MB). Free memory was 200.6 MB in the beginning and 256.9 MB in the end (delta: -56.3 MB). Peak memory consumption was 27.1 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 50.61 ms. Allocated memory is still 303.6 MB. Free memory was 256.9 MB in the beginning and 254.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.60 ms. Allocated memory is still 303.6 MB. Free memory was 254.4 MB in the beginning and 251.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 483.94 ms. Allocated memory is still 303.6 MB. Free memory was 251.8 MB in the beginning and 227.4 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 4279.37 ms. Allocated memory was 303.6 MB in the beginning and 433.6 MB in the end (delta: 130.0 MB). Free memory was 227.4 MB in the beginning and 343.7 MB in the end (delta: -116.3 MB). Peak memory consumption was 13.7 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1203 VarBasedMoverChecksPositive, 62 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 104 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 92 PlacesBefore, 38 PlacesAfterwards, 81 TransitionsBefore, 25 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 67 TotalNumberOfCompositions, 3343 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 258 SDtfs, 237 SDslu, 349 SDs, 0 SdLazy, 196 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 34 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 6430 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...