/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 22:48:27,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 22:48:27,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 22:48:27,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 22:48:27,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 22:48:27,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 22:48:27,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 22:48:27,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 22:48:27,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 22:48:27,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 22:48:27,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 22:48:27,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 22:48:27,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 22:48:27,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 22:48:27,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 22:48:27,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 22:48:27,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 22:48:27,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 22:48:27,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 22:48:27,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 22:48:27,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 22:48:27,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 22:48:27,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 22:48:27,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 22:48:27,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-05 22:48:27,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-05 22:48:27,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-05 22:48:27,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-05 22:48:27,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-05 22:48:27,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-05 22:48:27,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 22:48:27,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 22:48:27,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 22:48:27,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 22:48:27,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 22:48:27,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 22:48:27,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 22:48:27,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 22:48:27,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 22:48:27,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 22:48:27,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 22:48:27,305 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-05 22:48:27,352 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 22:48:27,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 22:48:27,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 22:48:27,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 22:48:27,356 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 22:48:27,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 22:48:27,357 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 22:48:27,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 22:48:27,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 22:48:27,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 22:48:27,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 22:48:27,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 22:48:27,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 22:48:27,359 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 22:48:27,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 22:48:27,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 22:48:27,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 22:48:27,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 22:48:27,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 22:48:27,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 22:48:27,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 22:48:27,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 22:48:27,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 22:48:27,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-05 22:48:27,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 22:48:27,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 22:48:27,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 22:48:27,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 22:48:27,363 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-05 22:48:27,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-05 22:48:27,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 22:48:27,696 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 22:48:27,700 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 22:48:27,702 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 22:48:27,702 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 22:48:27,703 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2020-10-05 22:48:27,784 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/370a9e4d7/a65366e0f07545178efe2769cc2b5d6e/FLAG6fa623833 [2020-10-05 22:48:28,352 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 22:48:28,353 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2020-10-05 22:48:28,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/370a9e4d7/a65366e0f07545178efe2769cc2b5d6e/FLAG6fa623833 [2020-10-05 22:48:28,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/370a9e4d7/a65366e0f07545178efe2769cc2b5d6e [2020-10-05 22:48:28,716 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 22:48:28,718 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 22:48:28,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 22:48:28,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 22:48:28,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 22:48:28,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:48:28" (1/1) ... [2020-10-05 22:48:28,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@498bda3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:28, skipping insertion in model container [2020-10-05 22:48:28,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:48:28" (1/1) ... [2020-10-05 22:48:28,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 22:48:28,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 22:48:29,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:48:29,342 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 22:48:29,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:48:29,480 INFO L208 MainTranslator]: Completed translation [2020-10-05 22:48:29,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:29 WrapperNode [2020-10-05 22:48:29,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 22:48:29,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 22:48:29,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 22:48:29,482 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 22:48:29,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:29" (1/1) ... [2020-10-05 22:48:29,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:29" (1/1) ... [2020-10-05 22:48:29,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 22:48:29,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 22:48:29,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 22:48:29,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 22:48:29,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:29" (1/1) ... [2020-10-05 22:48:29,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:29" (1/1) ... [2020-10-05 22:48:29,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:29" (1/1) ... [2020-10-05 22:48:29,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:29" (1/1) ... [2020-10-05 22:48:29,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:29" (1/1) ... [2020-10-05 22:48:29,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:29" (1/1) ... [2020-10-05 22:48:29,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:29" (1/1) ... [2020-10-05 22:48:29,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 22:48:29,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 22:48:29,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 22:48:29,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 22:48:29,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:29" (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 [2020-10-05 22:48:29,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 22:48:29,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-05 22:48:29,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 22:48:29,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 22:48:29,643 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-05 22:48:29,643 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-05 22:48:29,643 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-05 22:48:29,643 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-05 22:48:29,644 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-05 22:48:29,644 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-05 22:48:29,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-05 22:48:29,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 22:48:29,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 22:48:29,646 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 22:48:30,045 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 22:48:30,045 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-05 22:48:30,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:48:30 BoogieIcfgContainer [2020-10-05 22:48:30,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 22:48:30,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 22:48:30,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 22:48:30,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 22:48:30,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 10:48:28" (1/3) ... [2020-10-05 22:48:30,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54be12e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:48:30, skipping insertion in model container [2020-10-05 22:48:30,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:29" (2/3) ... [2020-10-05 22:48:30,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54be12e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:48:30, skipping insertion in model container [2020-10-05 22:48:30,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:48:30" (3/3) ... [2020-10-05 22:48:30,061 INFO L109 eAbstractionObserver]: Analyzing ICFG safe005_tso.opt.i [2020-10-05 22:48:30,071 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 22:48:30,071 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-05 22:48:30,079 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 22:48:30,079 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 22:48:30,113 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,114 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,114 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,114 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,115 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,115 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,116 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,116 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,117 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,117 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,117 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,117 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,118 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,119 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,119 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,119 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,120 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,120 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,126 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,127 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,127 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,127 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,137 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,137 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,137 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,138 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,150 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,150 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,150 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,151 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:30,169 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-05 22:48:30,187 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 22:48:30,187 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 22:48:30,187 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 22:48:30,187 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 22:48:30,188 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 22:48:30,188 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 22:48:30,188 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 22:48:30,188 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 22:48:30,203 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-05 22:48:30,205 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-05 22:48:30,244 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-05 22:48:30,245 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:48:30,250 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 51 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. [2020-10-05 22:48:30,252 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-05 22:48:30,274 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-05 22:48:30,274 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:48:30,275 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 51 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. [2020-10-05 22:48:30,277 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-10-05 22:48:30,278 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 22:48:32,012 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-10-05 22:48:32,012 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-10-05 22:48:32,017 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-05 22:48:32,062 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-05 22:48:32,064 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-05 22:48:32,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 22:48:32,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:32,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:32,094 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:32,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:32,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-10-05 22:48:32,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:32,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626366643] [2020-10-05 22:48:32,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:32,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:48:32,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626366643] [2020-10-05 22:48:32,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:32,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 22:48:32,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791917407] [2020-10-05 22:48:32,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:48:32,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:32,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:48:32,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:48:32,384 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-05 22:48:32,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:32,469 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-10-05 22:48:32,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:48:32,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-05 22:48:32,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:32,497 INFO L225 Difference]: With dead ends: 266 [2020-10-05 22:48:32,497 INFO L226 Difference]: Without dead ends: 202 [2020-10-05 22:48:32,498 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 [2020-10-05 22:48:32,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-05 22:48:32,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-05 22:48:32,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-05 22:48:32,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-05 22:48:32,581 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-10-05 22:48:32,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:32,582 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-05 22:48:32,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:48:32,583 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-05 22:48:32,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:48:32,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:32,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:32,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 22:48:32,585 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:32,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:32,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1603389483, now seen corresponding path program 1 times [2020-10-05 22:48:32,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:32,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402191189] [2020-10-05 22:48:32,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:32,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:48:32,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402191189] [2020-10-05 22:48:32,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:32,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:48:32,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844595451] [2020-10-05 22:48:32,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:48:32,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:32,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:48:32,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:48:32,655 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-10-05 22:48:32,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:32,688 INFO L93 Difference]: Finished difference Result 254 states and 666 transitions. [2020-10-05 22:48:32,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:48:32,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-05 22:48:32,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:32,691 INFO L225 Difference]: With dead ends: 254 [2020-10-05 22:48:32,691 INFO L226 Difference]: Without dead ends: 190 [2020-10-05 22:48:32,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:48:32,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-05 22:48:32,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-10-05 22:48:32,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-05 22:48:32,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 502 transitions. [2020-10-05 22:48:32,709 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 502 transitions. Word has length 10 [2020-10-05 22:48:32,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:32,709 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 502 transitions. [2020-10-05 22:48:32,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:48:32,710 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 502 transitions. [2020-10-05 22:48:32,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:48:32,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:32,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:32,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 22:48:32,712 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:32,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:32,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1533986257, now seen corresponding path program 1 times [2020-10-05 22:48:32,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:32,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504063590] [2020-10-05 22:48:32,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:32,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:48:32,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504063590] [2020-10-05 22:48:32,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:32,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:48:32,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984831468] [2020-10-05 22:48:32,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:48:32,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:32,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:48:32,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:48:32,799 INFO L87 Difference]: Start difference. First operand 190 states and 502 transitions. Second operand 4 states. [2020-10-05 22:48:32,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:32,836 INFO L93 Difference]: Finished difference Result 286 states and 722 transitions. [2020-10-05 22:48:32,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:48:32,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-05 22:48:32,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:32,838 INFO L225 Difference]: With dead ends: 286 [2020-10-05 22:48:32,839 INFO L226 Difference]: Without dead ends: 178 [2020-10-05 22:48:32,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:48:32,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-05 22:48:32,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 154. [2020-10-05 22:48:32,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-05 22:48:32,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 376 transitions. [2020-10-05 22:48:32,852 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 376 transitions. Word has length 11 [2020-10-05 22:48:32,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:32,852 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 376 transitions. [2020-10-05 22:48:32,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:48:32,852 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-10-05 22:48:32,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:48:32,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:32,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:32,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 22:48:32,855 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:32,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:32,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1026948662, now seen corresponding path program 1 times [2020-10-05 22:48:32,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:32,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653078910] [2020-10-05 22:48:32,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:32,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:48:32,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653078910] [2020-10-05 22:48:32,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:32,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:48:32,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927377367] [2020-10-05 22:48:32,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:48:32,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:32,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:48:32,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:48:32,901 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 3 states. [2020-10-05 22:48:32,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:32,914 INFO L93 Difference]: Finished difference Result 174 states and 416 transitions. [2020-10-05 22:48:32,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:48:32,914 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-05 22:48:32,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:32,915 INFO L225 Difference]: With dead ends: 174 [2020-10-05 22:48:32,915 INFO L226 Difference]: Without dead ends: 72 [2020-10-05 22:48:32,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:48:32,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-05 22:48:32,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-05 22:48:32,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-05 22:48:32,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 154 transitions. [2020-10-05 22:48:32,922 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 154 transitions. Word has length 12 [2020-10-05 22:48:32,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:32,922 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 154 transitions. [2020-10-05 22:48:32,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:48:32,923 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 154 transitions. [2020-10-05 22:48:32,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:48:32,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:32,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:32,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 22:48:32,924 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:32,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:32,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1770638686, now seen corresponding path program 1 times [2020-10-05 22:48:32,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:32,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508002836] [2020-10-05 22:48:32,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:32,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:48:32,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508002836] [2020-10-05 22:48:33,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:33,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:48:33,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016613121] [2020-10-05 22:48:33,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:48:33,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:33,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:48:33,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:48:33,002 INFO L87 Difference]: Start difference. First operand 72 states and 154 transitions. Second operand 4 states. [2020-10-05 22:48:33,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:33,031 INFO L93 Difference]: Finished difference Result 85 states and 167 transitions. [2020-10-05 22:48:33,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:48:33,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-05 22:48:33,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:33,032 INFO L225 Difference]: With dead ends: 85 [2020-10-05 22:48:33,032 INFO L226 Difference]: Without dead ends: 61 [2020-10-05 22:48:33,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:48:33,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-05 22:48:33,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-05 22:48:33,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-05 22:48:33,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 118 transitions. [2020-10-05 22:48:33,038 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 118 transitions. Word has length 13 [2020-10-05 22:48:33,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:33,038 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 118 transitions. [2020-10-05 22:48:33,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:48:33,038 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 118 transitions. [2020-10-05 22:48:33,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:48:33,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:33,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:33,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 22:48:33,040 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:33,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:33,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1873051802, now seen corresponding path program 1 times [2020-10-05 22:48:33,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:33,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942264785] [2020-10-05 22:48:33,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:33,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:48:33,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942264785] [2020-10-05 22:48:33,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:33,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:48:33,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502764765] [2020-10-05 22:48:33,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:48:33,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:33,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:48:33,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:48:33,140 INFO L87 Difference]: Start difference. First operand 61 states and 118 transitions. Second operand 5 states. [2020-10-05 22:48:33,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:33,180 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-10-05 22:48:33,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 22:48:33,181 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-05 22:48:33,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:33,182 INFO L225 Difference]: With dead ends: 62 [2020-10-05 22:48:33,182 INFO L226 Difference]: Without dead ends: 47 [2020-10-05 22:48:33,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:48:33,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-05 22:48:33,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-05 22:48:33,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-05 22:48:33,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-10-05 22:48:33,186 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-10-05 22:48:33,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:33,187 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-10-05 22:48:33,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:48:33,187 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-10-05 22:48:33,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-05 22:48:33,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:33,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:33,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 22:48:33,188 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:33,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:33,189 INFO L82 PathProgramCache]: Analyzing trace with hash 877737129, now seen corresponding path program 1 times [2020-10-05 22:48:33,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:33,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017117891] [2020-10-05 22:48:33,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:33,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:48:33,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017117891] [2020-10-05 22:48:33,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:33,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:48:33,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289200919] [2020-10-05 22:48:33,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 22:48:33,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:33,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 22:48:33,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:48:33,241 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-10-05 22:48:33,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:33,295 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2020-10-05 22:48:33,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:48:33,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-05 22:48:33,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:33,296 INFO L225 Difference]: With dead ends: 44 [2020-10-05 22:48:33,296 INFO L226 Difference]: Without dead ends: 38 [2020-10-05 22:48:33,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-05 22:48:33,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-05 22:48:33,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-05 22:48:33,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-05 22:48:33,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2020-10-05 22:48:33,299 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 15 [2020-10-05 22:48:33,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:33,299 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2020-10-05 22:48:33,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 22:48:33,300 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2020-10-05 22:48:33,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-05 22:48:33,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:33,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:33,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-05 22:48:33,301 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:33,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:33,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 1 times [2020-10-05 22:48:33,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:33,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513273725] [2020-10-05 22:48:33,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:33,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:48:33,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513273725] [2020-10-05 22:48:33,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:33,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:48:33,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426507197] [2020-10-05 22:48:33,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:48:33,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:33,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:48:33,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:48:33,357 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand 4 states. [2020-10-05 22:48:33,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:33,368 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2020-10-05 22:48:33,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:48:33,368 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-05 22:48:33,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:33,369 INFO L225 Difference]: With dead ends: 37 [2020-10-05 22:48:33,369 INFO L226 Difference]: Without dead ends: 0 [2020-10-05 22:48:33,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:48:33,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-05 22:48:33,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-05 22:48:33,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-05 22:48:33,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-05 22:48:33,370 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-05 22:48:33,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:33,371 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-05 22:48:33,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:48:33,372 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-05 22:48:33,372 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-05 22:48:33,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-05 22:48:33,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 10:48:33 BasicIcfg [2020-10-05 22:48:33,381 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 22:48:33,392 INFO L168 Benchmark]: Toolchain (without parser) took 4671.21 ms. Allocated memory was 143.1 MB in the beginning and 244.8 MB in the end (delta: 101.7 MB). Free memory was 104.6 MB in the beginning and 123.7 MB in the end (delta: -19.1 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-10-05 22:48:33,393 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-05 22:48:33,397 INFO L168 Benchmark]: CACSL2BoogieTranslator took 760.76 ms. Allocated memory was 143.1 MB in the beginning and 203.9 MB in the end (delta: 60.8 MB). Free memory was 104.2 MB in the beginning and 158.7 MB in the end (delta: -54.6 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-05 22:48:33,398 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.74 ms. Allocated memory is still 203.9 MB. Free memory was 158.7 MB in the beginning and 156.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-10-05 22:48:33,399 INFO L168 Benchmark]: Boogie Preprocessor took 25.88 ms. Allocated memory is still 203.9 MB. Free memory was 156.9 MB in the beginning and 155.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-10-05 22:48:33,401 INFO L168 Benchmark]: RCFGBuilder took 487.52 ms. Allocated memory is still 203.9 MB. Free memory was 155.1 MB in the beginning and 132.8 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-10-05 22:48:33,404 INFO L168 Benchmark]: TraceAbstraction took 3336.63 ms. Allocated memory was 203.9 MB in the beginning and 244.8 MB in the end (delta: 40.9 MB). Free memory was 132.2 MB in the beginning and 123.7 MB in the end (delta: 8.5 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. [2020-10-05 22:48:33,412 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 760.76 ms. Allocated memory was 143.1 MB in the beginning and 203.9 MB in the end (delta: 60.8 MB). Free memory was 104.2 MB in the beginning and 158.7 MB in the end (delta: -54.6 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.74 ms. Allocated memory is still 203.9 MB. Free memory was 158.7 MB in the beginning and 156.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.88 ms. Allocated memory is still 203.9 MB. Free memory was 156.9 MB in the beginning and 155.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 487.52 ms. Allocated memory is still 203.9 MB. Free memory was 155.1 MB in the beginning and 132.8 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3336.63 ms. Allocated memory was 203.9 MB in the beginning and 244.8 MB in the end (delta: 40.9 MB). Free memory was 132.2 MB in the beginning and 123.7 MB in the end (delta: 8.5 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 679 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 157 SDtfs, 123 SDslu, 177 SDs, 0 SdLazy, 115 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 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: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 2940 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...