/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 01:13:10,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 01:13:10,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 01:13:10,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 01:13:10,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 01:13:10,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 01:13:10,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 01:13:10,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 01:13:10,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 01:13:10,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 01:13:10,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 01:13:10,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 01:13:10,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 01:13:10,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 01:13:10,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 01:13:10,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 01:13:10,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 01:13:10,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 01:13:10,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 01:13:10,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 01:13:10,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 01:13:10,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 01:13:10,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 01:13:10,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 01:13:10,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-06 01:13:10,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-06 01:13:10,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-06 01:13:10,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-06 01:13:10,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-06 01:13:10,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-06 01:13:10,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 01:13:10,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 01:13:10,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 01:13:10,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 01:13:10,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 01:13:10,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 01:13:10,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 01:13:10,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 01:13:10,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 01:13:10,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 01:13:10,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 01:13:10,164 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-06 01:13:10,202 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 01:13:10,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 01:13:10,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 01:13:10,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 01:13:10,204 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 01:13:10,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 01:13:10,205 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 01:13:10,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 01:13:10,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 01:13:10,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 01:13:10,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 01:13:10,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 01:13:10,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 01:13:10,207 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 01:13:10,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 01:13:10,208 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 01:13:10,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 01:13:10,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 01:13:10,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 01:13:10,209 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 01:13:10,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 01:13:10,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 01:13:10,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 01:13:10,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 01:13:10,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 01:13:10,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 01:13:10,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 01:13:10,211 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 01:13:10,211 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 01:13:10,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 01:13:10,211 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 01:13:10,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 01:13:10,510 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 01:13:10,514 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 01:13:10,515 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 01:13:10,516 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 01:13:10,517 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i [2020-10-06 01:13:10,578 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/212187de4/5127d3da107342a8a477d5661b16b3bf/FLAG972f0d6f0 [2020-10-06 01:13:11,111 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 01:13:11,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i [2020-10-06 01:13:11,127 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/212187de4/5127d3da107342a8a477d5661b16b3bf/FLAG972f0d6f0 [2020-10-06 01:13:11,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/212187de4/5127d3da107342a8a477d5661b16b3bf [2020-10-06 01:13:11,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 01:13:11,479 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 01:13:11,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 01:13:11,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 01:13:11,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 01:13:11,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:13:11" (1/1) ... [2020-10-06 01:13:11,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cfed8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:11, skipping insertion in model container [2020-10-06 01:13:11,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:13:11" (1/1) ... [2020-10-06 01:13:11,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 01:13:11,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 01:13:11,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:13:12,012 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 01:13:12,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:13:12,150 INFO L208 MainTranslator]: Completed translation [2020-10-06 01:13:12,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:12 WrapperNode [2020-10-06 01:13:12,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 01:13:12,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 01:13:12,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 01:13:12,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 01:13:12,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:12" (1/1) ... [2020-10-06 01:13:12,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:12" (1/1) ... [2020-10-06 01:13:12,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 01:13:12,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 01:13:12,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 01:13:12,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 01:13:12,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:12" (1/1) ... [2020-10-06 01:13:12,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:12" (1/1) ... [2020-10-06 01:13:12,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:12" (1/1) ... [2020-10-06 01:13:12,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:12" (1/1) ... [2020-10-06 01:13:12,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:12" (1/1) ... [2020-10-06 01:13:12,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:12" (1/1) ... [2020-10-06 01:13:12,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:12" (1/1) ... [2020-10-06 01:13:12,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 01:13:12,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 01:13:12,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 01:13:12,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 01:13:12,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:12" (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 [2020-10-06 01:13:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 01:13:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-06 01:13:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 01:13:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 01:13:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-06 01:13:12,316 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-06 01:13:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-06 01:13:12,318 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-06 01:13:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-06 01:13:12,318 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-06 01:13:12,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-06 01:13:12,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 01:13:12,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 01:13:12,321 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 01:13:12,660 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 01:13:12,660 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-06 01:13:12,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:13:12 BoogieIcfgContainer [2020-10-06 01:13:12,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 01:13:12,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 01:13:12,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 01:13:12,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 01:13:12,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 01:13:11" (1/3) ... [2020-10-06 01:13:12,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322c2af3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:13:12, skipping insertion in model container [2020-10-06 01:13:12,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:12" (2/3) ... [2020-10-06 01:13:12,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322c2af3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:13:12, skipping insertion in model container [2020-10-06 01:13:12,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:13:12" (3/3) ... [2020-10-06 01:13:12,675 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_tso.oepc.i [2020-10-06 01:13:12,686 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 01:13:12,687 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 01:13:12,694 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 01:13:12,695 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 01:13:12,730 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,731 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,731 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,731 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,732 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,732 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,733 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,733 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,733 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,734 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,735 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,736 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,736 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,736 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,737 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,737 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,741 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,741 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,741 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,742 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,750 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,751 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,751 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,751 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,754 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,754 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,754 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,755 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:12,771 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-06 01:13:12,793 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 01:13:12,793 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 01:13:12,793 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 01:13:12,793 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 01:13:12,794 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 01:13:12,794 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 01:13:12,794 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 01:13:12,794 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 01:13:12,811 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-06 01:13:12,813 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-06 01:13:12,861 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-06 01:13:12,861 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:13:12,867 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 49 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. [2020-10-06 01:13:12,870 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-06 01:13:12,892 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-06 01:13:12,893 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:13:12,893 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 49 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. [2020-10-06 01:13:12,896 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-10-06 01:13:12,897 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 01:13:14,079 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-06 01:13:14,279 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2414 [2020-10-06 01:13:14,280 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-10-06 01:13:14,284 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-10-06 01:13:14,311 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-06 01:13:14,313 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-06 01:13:14,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 01:13:14,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:14,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:13:14,323 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:14,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:14,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-10-06 01:13:14,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:14,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900918809] [2020-10-06 01:13:14,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:14,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:14,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900918809] [2020-10-06 01:13:14,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:14,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:13:14,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [527265349] [2020-10-06 01:13:14,594 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:14,597 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:14,614 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-06 01:13:14,614 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:14,620 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:13:14,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:13:14,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:14,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:13:14,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:13:14,640 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-06 01:13:14,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:14,684 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-10-06 01:13:14,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:13:14,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-06 01:13:14,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:14,703 INFO L225 Difference]: With dead ends: 294 [2020-10-06 01:13:14,704 INFO L226 Difference]: Without dead ends: 230 [2020-10-06 01:13:14,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:13:14,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-06 01:13:14,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-10-06 01:13:14,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-06 01:13:14,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-10-06 01:13:14,802 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-10-06 01:13:14,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:14,803 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-10-06 01:13:14,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:13:14,803 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-10-06 01:13:14,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 01:13:14,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:14,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:13:14,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 01:13:14,806 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:14,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:14,806 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 1 times [2020-10-06 01:13:14,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:14,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35621451] [2020-10-06 01:13:14,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:14,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:14,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35621451] [2020-10-06 01:13:14,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:14,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:13:14,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1005016459] [2020-10-06 01:13:14,872 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:14,873 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:14,876 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-10-06 01:13:14,876 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:14,920 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:13:14,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:13:14,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:14,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:13:14,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:13:14,923 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-10-06 01:13:14,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:14,931 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-10-06 01:13:14,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:13:14,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-06 01:13:14,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:14,934 INFO L225 Difference]: With dead ends: 202 [2020-10-06 01:13:14,935 INFO L226 Difference]: Without dead ends: 202 [2020-10-06 01:13:14,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:13:14,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-06 01:13:14,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-06 01:13:14,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-06 01:13:14,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-06 01:13:14,950 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-10-06 01:13:14,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:14,951 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-06 01:13:14,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:13:14,951 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-06 01:13:14,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-06 01:13:14,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:14,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:13:14,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 01:13:14,953 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:14,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:14,954 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-10-06 01:13:14,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:14,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384848456] [2020-10-06 01:13:14,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:15,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:15,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384848456] [2020-10-06 01:13:15,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:15,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:13:15,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1852140467] [2020-10-06 01:13:15,007 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:15,008 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:15,009 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-10-06 01:13:15,010 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:15,013 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:13:15,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:13:15,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:15,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:13:15,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:13:15,015 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-06 01:13:15,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:15,033 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-10-06 01:13:15,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:13:15,034 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-06 01:13:15,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:15,036 INFO L225 Difference]: With dead ends: 266 [2020-10-06 01:13:15,036 INFO L226 Difference]: Without dead ends: 140 [2020-10-06 01:13:15,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:13:15,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-06 01:13:15,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-06 01:13:15,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-06 01:13:15,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-10-06 01:13:15,046 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-10-06 01:13:15,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:15,046 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-10-06 01:13:15,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:13:15,047 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-10-06 01:13:15,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 01:13:15,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:15,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:13:15,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 01:13:15,048 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:15,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:15,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-10-06 01:13:15,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:15,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623501373] [2020-10-06 01:13:15,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:15,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:15,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623501373] [2020-10-06 01:13:15,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:15,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:13:15,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1742016474] [2020-10-06 01:13:15,138 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:15,139 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:15,142 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-06 01:13:15,142 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:15,148 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:13:15,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:13:15,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:15,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:13:15,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:13:15,150 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 4 states. [2020-10-06 01:13:15,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:15,185 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-10-06 01:13:15,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:13:15,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-06 01:13:15,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:15,187 INFO L225 Difference]: With dead ends: 165 [2020-10-06 01:13:15,188 INFO L226 Difference]: Without dead ends: 113 [2020-10-06 01:13:15,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:13:15,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-06 01:13:15,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-10-06 01:13:15,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-06 01:13:15,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-10-06 01:13:15,195 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-10-06 01:13:15,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:15,196 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-10-06 01:13:15,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:13:15,196 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-10-06 01:13:15,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 01:13:15,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:15,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:13:15,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-06 01:13:15,198 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:15,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:15,198 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-10-06 01:13:15,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:15,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924718962] [2020-10-06 01:13:15,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:15,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:15,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924718962] [2020-10-06 01:13:15,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:15,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:13:15,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [359186667] [2020-10-06 01:13:15,326 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:15,327 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:15,329 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-06 01:13:15,330 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:15,344 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2994#(<= ~__unbuffered_cnt~0 0)] [2020-10-06 01:13:15,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-06 01:13:15,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:15,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-06 01:13:15,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-06 01:13:15,346 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 6 states. [2020-10-06 01:13:15,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:15,408 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-10-06 01:13:15,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:13:15,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-06 01:13:15,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:15,410 INFO L225 Difference]: With dead ends: 111 [2020-10-06 01:13:15,410 INFO L226 Difference]: Without dead ends: 80 [2020-10-06 01:13:15,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:13:15,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-06 01:13:15,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-06 01:13:15,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-06 01:13:15,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-10-06 01:13:15,416 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-10-06 01:13:15,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:15,416 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-10-06 01:13:15,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-06 01:13:15,416 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-10-06 01:13:15,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-06 01:13:15,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:15,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:13:15,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-06 01:13:15,418 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:15,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:15,418 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-10-06 01:13:15,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:15,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466940094] [2020-10-06 01:13:15,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:15,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:15,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466940094] [2020-10-06 01:13:15,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:15,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-06 01:13:15,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [923408306] [2020-10-06 01:13:15,477 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:15,478 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:15,481 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-10-06 01:13:15,482 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:15,494 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3274#(<= ~__unbuffered_cnt~0 0)] [2020-10-06 01:13:15,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:13:15,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:15,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:13:15,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:13:15,495 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 7 states. [2020-10-06 01:13:15,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:15,550 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-10-06 01:13:15,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-06 01:13:15,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-06 01:13:15,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:15,551 INFO L225 Difference]: With dead ends: 75 [2020-10-06 01:13:15,551 INFO L226 Difference]: Without dead ends: 66 [2020-10-06 01:13:15,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-06 01:13:15,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-06 01:13:15,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-06 01:13:15,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-06 01:13:15,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-10-06 01:13:15,556 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-10-06 01:13:15,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:15,556 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-10-06 01:13:15,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:13:15,556 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-10-06 01:13:15,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 01:13:15,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:15,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:13:15,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-06 01:13:15,558 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:15,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:15,558 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-10-06 01:13:15,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:15,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119304772] [2020-10-06 01:13:15,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:15,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:15,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119304772] [2020-10-06 01:13:15,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:15,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:13:15,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1922674750] [2020-10-06 01:13:15,594 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:15,596 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:15,603 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 57 transitions. [2020-10-06 01:13:15,603 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:15,619 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:13:15,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:13:15,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:15,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:13:15,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:13:15,620 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 4 states. [2020-10-06 01:13:15,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:15,639 INFO L93 Difference]: Finished difference Result 85 states and 165 transitions. [2020-10-06 01:13:15,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:13:15,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-06 01:13:15,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:15,640 INFO L225 Difference]: With dead ends: 85 [2020-10-06 01:13:15,640 INFO L226 Difference]: Without dead ends: 48 [2020-10-06 01:13:15,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:13:15,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-06 01:13:15,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-06 01:13:15,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-06 01:13:15,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 83 transitions. [2020-10-06 01:13:15,643 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 83 transitions. Word has length 17 [2020-10-06 01:13:15,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:15,644 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-10-06 01:13:15,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:13:15,644 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-10-06 01:13:15,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 01:13:15,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:15,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:13:15,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-06 01:13:15,645 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:15,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:15,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 2 times [2020-10-06 01:13:15,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:15,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757563403] [2020-10-06 01:13:15,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:15,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:15,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757563403] [2020-10-06 01:13:15,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:15,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:13:15,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1151285187] [2020-10-06 01:13:15,682 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:15,684 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:15,690 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 57 transitions. [2020-10-06 01:13:15,691 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:15,705 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:13:15,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:13:15,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:15,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:13:15,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:13:15,706 INFO L87 Difference]: Start difference. First operand 48 states and 83 transitions. Second operand 4 states. [2020-10-06 01:13:15,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:15,726 INFO L93 Difference]: Finished difference Result 73 states and 130 transitions. [2020-10-06 01:13:15,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:13:15,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-06 01:13:15,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:15,727 INFO L225 Difference]: With dead ends: 73 [2020-10-06 01:13:15,728 INFO L226 Difference]: Without dead ends: 42 [2020-10-06 01:13:15,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:13:15,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-06 01:13:15,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-06 01:13:15,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-06 01:13:15,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-10-06 01:13:15,730 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 17 [2020-10-06 01:13:15,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:15,731 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-10-06 01:13:15,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:13:15,731 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-10-06 01:13:15,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 01:13:15,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:15,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:13:15,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-06 01:13:15,732 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:15,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:15,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1323635892, now seen corresponding path program 3 times [2020-10-06 01:13:15,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:15,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473111178] [2020-10-06 01:13:15,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:15,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:15,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473111178] [2020-10-06 01:13:15,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:15,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:13:15,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1497781236] [2020-10-06 01:13:15,769 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:15,771 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:15,776 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 39 transitions. [2020-10-06 01:13:15,776 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:15,799 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:13:15,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:13:15,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:15,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:13:15,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:13:15,800 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 4 states. [2020-10-06 01:13:15,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:15,810 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-10-06 01:13:15,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:13:15,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-06 01:13:15,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:15,811 INFO L225 Difference]: With dead ends: 41 [2020-10-06 01:13:15,811 INFO L226 Difference]: Without dead ends: 0 [2020-10-06 01:13:15,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:13:15,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-06 01:13:15,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-06 01:13:15,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-06 01:13:15,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-06 01:13:15,812 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-06 01:13:15,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:15,813 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-06 01:13:15,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:13:15,813 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-06 01:13:15,813 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-06 01:13:15,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-06 01:13:15,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 01:13:15 BasicIcfg [2020-10-06 01:13:15,818 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 01:13:15,820 INFO L168 Benchmark]: Toolchain (without parser) took 4341.25 ms. Allocated memory was 140.5 MB in the beginning and 245.9 MB in the end (delta: 105.4 MB). Free memory was 101.1 MB in the beginning and 125.6 MB in the end (delta: -24.5 MB). Peak memory consumption was 80.9 MB. Max. memory is 7.1 GB. [2020-10-06 01:13:15,821 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-06 01:13:15,822 INFO L168 Benchmark]: CACSL2BoogieTranslator took 671.58 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 100.9 MB in the beginning and 160.0 MB in the end (delta: -59.1 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-06 01:13:15,822 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.68 ms. Allocated memory is still 203.9 MB. Free memory was 160.0 MB in the beginning and 157.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-06 01:13:15,823 INFO L168 Benchmark]: Boogie Preprocessor took 27.65 ms. Allocated memory is still 203.9 MB. Free memory was 157.4 MB in the beginning and 156.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-06 01:13:15,824 INFO L168 Benchmark]: RCFGBuilder took 425.78 ms. Allocated memory is still 203.9 MB. Free memory was 156.1 MB in the beginning and 133.8 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-10-06 01:13:15,825 INFO L168 Benchmark]: TraceAbstraction took 3152.81 ms. Allocated memory was 203.9 MB in the beginning and 245.9 MB in the end (delta: 41.9 MB). Free memory was 133.1 MB in the beginning and 125.6 MB in the end (delta: 7.6 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. [2020-10-06 01:13:15,829 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 671.58 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 100.9 MB in the beginning and 160.0 MB in the end (delta: -59.1 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.68 ms. Allocated memory is still 203.9 MB. Free memory was 160.0 MB in the beginning and 157.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.65 ms. Allocated memory is still 203.9 MB. Free memory was 157.4 MB in the beginning and 156.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 425.78 ms. Allocated memory is still 203.9 MB. Free memory was 156.1 MB in the beginning and 133.8 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3152.81 ms. Allocated memory was 203.9 MB in the beginning and 245.9 MB in the end (delta: 41.9 MB). Free memory was 133.1 MB in the beginning and 125.6 MB in the end (delta: 7.6 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 626 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2414 CheckedPairsTotal, 56 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 172 SDtfs, 127 SDslu, 210 SDs, 0 SdLazy, 123 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3412 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...