/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.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:10:11,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:10:11,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:10:11,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:10:11,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:10:11,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:10:11,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:10:11,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:10:11,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:10:11,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:10:11,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:10:11,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:10:11,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:10:11,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:10:11,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:10:11,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:10:11,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:10:11,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:10:11,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:10:11,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:10:11,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:10:11,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:10:11,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:10:11,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:10:11,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:10:11,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:10:11,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:10:11,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:10:11,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:10:11,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:10:11,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:10:11,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:10:11,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:10:11,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:10:11,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:10:11,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:10:11,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:10:11,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:10:11,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:10:11,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:10:11,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:10:11,098 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-16 12:10:11,121 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:10:11,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:10:11,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:10:11,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:10:11,123 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:10:11,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:10:11,124 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:10:11,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:10:11,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:10:11,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:10:11,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:10:11,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:10:11,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:10:11,125 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:10:11,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:10:11,126 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:10:11,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:10:11,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:10:11,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:10:11,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:10:11,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:10:11,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:10:11,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:10:11,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:10:11,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:10:11,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:10:11,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:10:11,128 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:10:11,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:10:11,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:10:11,468 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:10:11,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:10:11,476 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:10:11,478 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:10:11,479 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2020-10-16 12:10:11,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7f7dc4a4/661e4bdb26664f448de62bc306ad9260/FLAG29c935c38 [2020-10-16 12:10:12,113 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:10:12,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2020-10-16 12:10:12,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7f7dc4a4/661e4bdb26664f448de62bc306ad9260/FLAG29c935c38 [2020-10-16 12:10:12,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7f7dc4a4/661e4bdb26664f448de62bc306ad9260 [2020-10-16 12:10:12,379 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:10:12,381 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:10:12,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:10:12,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:10:12,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:10:12,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:10:12" (1/1) ... [2020-10-16 12:10:12,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29bc5fa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:12, skipping insertion in model container [2020-10-16 12:10:12,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:10:12" (1/1) ... [2020-10-16 12:10:12,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:10:12,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:10:12,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:10:12,900 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:10:13,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:10:13,156 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:10:13,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:13 WrapperNode [2020-10-16 12:10:13,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:10:13,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:10:13,158 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:10:13,158 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:10:13,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:13" (1/1) ... [2020-10-16 12:10:13,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:13" (1/1) ... [2020-10-16 12:10:13,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:10:13,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:10:13,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:10:13,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:10:13,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:13" (1/1) ... [2020-10-16 12:10:13,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:13" (1/1) ... [2020-10-16 12:10:13,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:13" (1/1) ... [2020-10-16 12:10:13,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:13" (1/1) ... [2020-10-16 12:10:13,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:13" (1/1) ... [2020-10-16 12:10:13,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:13" (1/1) ... [2020-10-16 12:10:13,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:13" (1/1) ... [2020-10-16 12:10:13,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:10:13,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:10:13,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:10:13,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:10:13,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:10:13,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:10:13,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 12:10:13,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:10:13,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:10:13,312 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 12:10:13,312 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 12:10:13,312 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 12:10:13,312 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 12:10:13,313 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 12:10:13,313 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 12:10:13,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 12:10:13,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:10:13,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:10:13,315 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:10:13,712 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:10:13,713 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 12:10:13,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:10:13 BoogieIcfgContainer [2020-10-16 12:10:13,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:10:13,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:10:13,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:10:13,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:10:13,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:10:12" (1/3) ... [2020-10-16 12:10:13,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd3bbf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:10:13, skipping insertion in model container [2020-10-16 12:10:13,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:13" (2/3) ... [2020-10-16 12:10:13,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd3bbf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:10:13, skipping insertion in model container [2020-10-16 12:10:13,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:10:13" (3/3) ... [2020-10-16 12:10:13,725 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.oepc.i [2020-10-16 12:10:13,738 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:10:13,738 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:10:13,746 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 12:10:13,748 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:10:13,777 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,778 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,778 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,779 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,779 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,779 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,780 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,780 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,780 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,781 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,781 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,781 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,782 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,782 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,783 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,783 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,783 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,783 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,788 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,788 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,788 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,789 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,794 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,794 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,794 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,795 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,797 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,797 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,797 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,798 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:13,800 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:10:13,813 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 12:10:13,832 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:10:13,833 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:10:13,833 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:10:13,833 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:10:13,833 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:10:13,833 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:10:13,834 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:10:13,834 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:10:13,846 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:10:13,847 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 12:10:13,849 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 12:10:13,851 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 12:10:13,901 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 12:10:13,901 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 12:10:13,907 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. [2020-10-16 12:10:13,910 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 12:10:15,088 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-16 12:10:15,148 INFO L132 LiptonReduction]: Checked pairs total: 2334 [2020-10-16 12:10:15,149 INFO L134 LiptonReduction]: Total number of compositions: 56 [2020-10-16 12:10:15,156 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-16 12:10:15,189 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-16 12:10:15,192 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-16 12:10:15,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:10:15,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:10:15,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:10:15,202 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:10:15,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:10:15,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 1 times [2020-10-16 12:10:15,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:10:15,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623182002] [2020-10-16 12:10:15,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:10:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:10:15,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:10:15,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623182002] [2020-10-16 12:10:15,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:10:15,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:10:15,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368728078] [2020-10-16 12:10:15,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 12:10:15,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:10:15,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 12:10:15,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 12:10:15,537 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-16 12:10:15,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:10:15,573 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-16 12:10:15,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 12:10:15,575 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-16 12:10:15,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:10:15,602 INFO L225 Difference]: With dead ends: 362 [2020-10-16 12:10:15,603 INFO L226 Difference]: Without dead ends: 298 [2020-10-16 12:10:15,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 12:10:15,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-16 12:10:15,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-16 12:10:15,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-16 12:10:15,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-16 12:10:15,691 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-16 12:10:15,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:10:15,692 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-16 12:10:15,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 12:10:15,693 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-16 12:10:15,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:10:15,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:10:15,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:10:15,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:10:15,695 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:10:15,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:10:15,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 1 times [2020-10-16 12:10:15,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:10:15,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597635910] [2020-10-16 12:10:15,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:10:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:10:15,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:10:15,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597635910] [2020-10-16 12:10:15,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:10:15,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:10:15,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412341992] [2020-10-16 12:10:15,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:10:15,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:10:15,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:10:15,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:10:15,853 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-10-16 12:10:15,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:10:15,889 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2020-10-16 12:10:15,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:10:15,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 12:10:15,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:10:15,893 INFO L225 Difference]: With dead ends: 346 [2020-10-16 12:10:15,894 INFO L226 Difference]: Without dead ends: 282 [2020-10-16 12:10:15,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:10:15,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-16 12:10:15,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-10-16 12:10:15,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-16 12:10:15,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2020-10-16 12:10:15,919 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2020-10-16 12:10:15,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:10:15,920 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2020-10-16 12:10:15,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:10:15,920 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2020-10-16 12:10:15,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:10:15,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:10:15,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:10:15,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:10:15,922 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:10:15,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:10:15,923 INFO L82 PathProgramCache]: Analyzing trace with hash -485254353, now seen corresponding path program 1 times [2020-10-16 12:10:15,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:10:15,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856495027] [2020-10-16 12:10:15,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:10:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:10:16,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:10:16,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856495027] [2020-10-16 12:10:16,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:10:16,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:10:16,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456435597] [2020-10-16 12:10:16,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:10:16,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:10:16,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:10:16,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:10:16,019 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand 4 states. [2020-10-16 12:10:16,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:10:16,048 INFO L93 Difference]: Finished difference Result 310 states and 844 transitions. [2020-10-16 12:10:16,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:10:16,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-16 12:10:16,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:10:16,055 INFO L225 Difference]: With dead ends: 310 [2020-10-16 12:10:16,055 INFO L226 Difference]: Without dead ends: 254 [2020-10-16 12:10:16,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:10:16,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-16 12:10:16,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-10-16 12:10:16,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-16 12:10:16,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 708 transitions. [2020-10-16 12:10:16,089 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 708 transitions. Word has length 10 [2020-10-16 12:10:16,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:10:16,089 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 708 transitions. [2020-10-16 12:10:16,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:10:16,089 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 708 transitions. [2020-10-16 12:10:16,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:10:16,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:10:16,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:10:16,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:10:16,097 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:10:16,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:10:16,103 INFO L82 PathProgramCache]: Analyzing trace with hash 2136362745, now seen corresponding path program 1 times [2020-10-16 12:10:16,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:10:16,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459842741] [2020-10-16 12:10:16,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:10:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:10:16,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:10:16,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459842741] [2020-10-16 12:10:16,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:10:16,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:10:16,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065397619] [2020-10-16 12:10:16,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:10:16,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:10:16,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:10:16,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:10:16,203 INFO L87 Difference]: Start difference. First operand 254 states and 708 transitions. Second operand 5 states. [2020-10-16 12:10:16,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:10:16,247 INFO L93 Difference]: Finished difference Result 308 states and 834 transitions. [2020-10-16 12:10:16,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:10:16,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-16 12:10:16,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:10:16,249 INFO L225 Difference]: With dead ends: 308 [2020-10-16 12:10:16,249 INFO L226 Difference]: Without dead ends: 170 [2020-10-16 12:10:16,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-16 12:10:16,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-16 12:10:16,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-10-16 12:10:16,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-16 12:10:16,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 432 transitions. [2020-10-16 12:10:16,258 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 432 transitions. Word has length 11 [2020-10-16 12:10:16,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:10:16,258 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 432 transitions. [2020-10-16 12:10:16,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:10:16,259 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 432 transitions. [2020-10-16 12:10:16,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:10:16,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:10:16,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:10:16,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:10:16,261 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:10:16,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:10:16,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1820296279, now seen corresponding path program 1 times [2020-10-16 12:10:16,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:10:16,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882134338] [2020-10-16 12:10:16,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:10:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:10:16,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:10:16,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882134338] [2020-10-16 12:10:16,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:10:16,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:10:16,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035994181] [2020-10-16 12:10:16,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:10:16,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:10:16,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:10:16,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:10:16,312 INFO L87 Difference]: Start difference. First operand 170 states and 432 transitions. Second operand 4 states. [2020-10-16 12:10:16,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:10:16,344 INFO L93 Difference]: Finished difference Result 183 states and 423 transitions. [2020-10-16 12:10:16,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:10:16,345 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 12:10:16,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:10:16,346 INFO L225 Difference]: With dead ends: 183 [2020-10-16 12:10:16,346 INFO L226 Difference]: Without dead ends: 143 [2020-10-16 12:10:16,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:10:16,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-16 12:10:16,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-10-16 12:10:16,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-16 12:10:16,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 330 transitions. [2020-10-16 12:10:16,353 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 330 transitions. Word has length 12 [2020-10-16 12:10:16,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:10:16,354 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 330 transitions. [2020-10-16 12:10:16,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:10:16,354 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 330 transitions. [2020-10-16 12:10:16,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:10:16,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:10:16,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:10:16,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:10:16,356 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:10:16,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:10:16,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1114555336, now seen corresponding path program 1 times [2020-10-16 12:10:16,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:10:16,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074346920] [2020-10-16 12:10:16,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:10:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:10:16,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:10:16,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074346920] [2020-10-16 12:10:16,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:10:16,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:10:16,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214404350] [2020-10-16 12:10:16,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:10:16,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:10:16,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:10:16,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:10:16,446 INFO L87 Difference]: Start difference. First operand 143 states and 330 transitions. Second operand 5 states. [2020-10-16 12:10:16,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:10:16,488 INFO L93 Difference]: Finished difference Result 129 states and 271 transitions. [2020-10-16 12:10:16,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:10:16,488 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 12:10:16,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:10:16,490 INFO L225 Difference]: With dead ends: 129 [2020-10-16 12:10:16,490 INFO L226 Difference]: Without dead ends: 104 [2020-10-16 12:10:16,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:10:16,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-16 12:10:16,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-16 12:10:16,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-16 12:10:16,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 215 transitions. [2020-10-16 12:10:16,495 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 215 transitions. Word has length 13 [2020-10-16 12:10:16,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:10:16,495 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 215 transitions. [2020-10-16 12:10:16,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:10:16,495 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 215 transitions. [2020-10-16 12:10:16,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:10:16,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:10:16,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:10:16,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 12:10:16,497 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:10:16,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:10:16,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1420096236, now seen corresponding path program 1 times [2020-10-16 12:10:16,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:10:16,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930876804] [2020-10-16 12:10:16,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:10:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:10:16,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:10:16,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930876804] [2020-10-16 12:10:16,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:10:16,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 12:10:16,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554943000] [2020-10-16 12:10:16,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:10:16,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:10:16,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:10:16,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:10:16,560 INFO L87 Difference]: Start difference. First operand 104 states and 215 transitions. Second operand 6 states. [2020-10-16 12:10:16,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:10:16,611 INFO L93 Difference]: Finished difference Result 93 states and 191 transitions. [2020-10-16 12:10:16,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:10:16,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-16 12:10:16,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:10:16,613 INFO L225 Difference]: With dead ends: 93 [2020-10-16 12:10:16,613 INFO L226 Difference]: Without dead ends: 85 [2020-10-16 12:10:16,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:10:16,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-16 12:10:16,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-16 12:10:16,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-16 12:10:16,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 177 transitions. [2020-10-16 12:10:16,618 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 177 transitions. Word has length 15 [2020-10-16 12:10:16,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:10:16,618 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 177 transitions. [2020-10-16 12:10:16,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:10:16,618 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 177 transitions. [2020-10-16 12:10:16,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 12:10:16,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:10:16,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:10:16,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 12:10:16,620 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:10:16,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:10:16,620 INFO L82 PathProgramCache]: Analyzing trace with hash -572692364, now seen corresponding path program 1 times [2020-10-16 12:10:16,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:10:16,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203165354] [2020-10-16 12:10:16,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:10:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:10:16,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:10:16,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203165354] [2020-10-16 12:10:16,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:10:16,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:10:16,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897742293] [2020-10-16 12:10:16,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:10:16,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:10:16,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:10:16,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:10:16,673 INFO L87 Difference]: Start difference. First operand 85 states and 177 transitions. Second operand 4 states. [2020-10-16 12:10:16,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:10:16,691 INFO L93 Difference]: Finished difference Result 117 states and 236 transitions. [2020-10-16 12:10:16,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:10:16,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-16 12:10:16,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:10:16,692 INFO L225 Difference]: With dead ends: 117 [2020-10-16 12:10:16,693 INFO L226 Difference]: Without dead ends: 55 [2020-10-16 12:10:16,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:10:16,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-16 12:10:16,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-16 12:10:16,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-16 12:10:16,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-10-16 12:10:16,696 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-10-16 12:10:16,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:10:16,696 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-10-16 12:10:16,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:10:16,697 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-10-16 12:10:16,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 12:10:16,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:10:16,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:10:16,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 12:10:16,698 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:10:16,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:10:16,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1123595488, now seen corresponding path program 2 times [2020-10-16 12:10:16,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:10:16,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145557215] [2020-10-16 12:10:16,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:10:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:10:16,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:10:16,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145557215] [2020-10-16 12:10:16,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:10:16,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:10:16,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763563255] [2020-10-16 12:10:16,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:10:16,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:10:16,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:10:16,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:10:16,776 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-10-16 12:10:16,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:10:16,803 INFO L93 Difference]: Finished difference Result 54 states and 98 transitions. [2020-10-16 12:10:16,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:10:16,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-16 12:10:16,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:10:16,804 INFO L225 Difference]: With dead ends: 54 [2020-10-16 12:10:16,804 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 12:10:16,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:10:16,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 12:10:16,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 12:10:16,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 12:10:16,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 12:10:16,818 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-16 12:10:16,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:10:16,818 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 12:10:16,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:10:16,818 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 12:10:16,818 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 12:10:16,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 12:10:16,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:10:16 BasicIcfg [2020-10-16 12:10:16,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:10:16,827 INFO L168 Benchmark]: Toolchain (without parser) took 4445.08 ms. Allocated memory was 138.4 MB in the beginning and 250.1 MB in the end (delta: 111.7 MB). Free memory was 100.2 MB in the beginning and 217.7 MB in the end (delta: -117.6 MB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. [2020-10-16 12:10:16,828 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 12:10:16,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 774.52 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 99.7 MB in the beginning and 160.7 MB in the end (delta: -60.9 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-10-16 12:10:16,830 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.22 ms. Allocated memory is still 201.9 MB. Free memory was 160.0 MB in the beginning and 157.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:10:16,835 INFO L168 Benchmark]: Boogie Preprocessor took 27.24 ms. Allocated memory is still 201.9 MB. Free memory was 157.9 MB in the beginning and 156.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-16 12:10:16,836 INFO L168 Benchmark]: RCFGBuilder took 478.53 ms. Allocated memory is still 201.9 MB. Free memory was 156.6 MB in the beginning and 134.0 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-10-16 12:10:16,838 INFO L168 Benchmark]: TraceAbstraction took 3106.87 ms. Allocated memory was 201.9 MB in the beginning and 250.1 MB in the end (delta: 48.2 MB). Free memory was 134.0 MB in the beginning and 217.7 MB in the end (delta: -83.7 MB). Peak memory consumption was 94.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:10:16,851 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 774.52 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 99.7 MB in the beginning and 160.7 MB in the end (delta: -60.9 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.22 ms. Allocated memory is still 201.9 MB. Free memory was 160.0 MB in the beginning and 157.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.24 ms. Allocated memory is still 201.9 MB. Free memory was 157.9 MB in the beginning and 156.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 478.53 ms. Allocated memory is still 201.9 MB. Free memory was 156.6 MB in the beginning and 134.0 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3106.87 ms. Allocated memory was 201.9 MB in the beginning and 250.1 MB in the end (delta: 48.2 MB). Free memory was 134.0 MB in the beginning and 217.7 MB in the end (delta: -83.7 MB). Peak memory consumption was 94.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 642 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 51 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 78 PlacesBefore, 32 PlacesAfterwards, 70 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 2334 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 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 201 SDtfs, 188 SDslu, 308 SDs, 0 SdLazy, 115 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 3242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...