/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/safe025_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 01:08:16,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 01:08:16,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 01:08:16,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 01:08:16,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 01:08:16,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 01:08:16,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 01:08:16,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 01:08:16,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 01:08:16,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 01:08:16,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 01:08:16,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 01:08:16,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 01:08:16,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 01:08:16,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 01:08:16,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 01:08:16,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 01:08:16,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 01:08:16,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 01:08:16,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 01:08:16,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 01:08:16,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 01:08:16,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 01:08:16,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 01:08:16,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-06 01:08:16,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-06 01:08:16,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-06 01:08:16,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-06 01:08:16,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-06 01:08:16,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-06 01:08:16,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 01:08:16,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 01:08:16,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 01:08:16,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 01:08:16,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 01:08:16,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 01:08:16,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 01:08:16,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 01:08:16,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 01:08:16,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 01:08:16,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 01:08:16,333 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 01:08:16,379 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 01:08:16,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 01:08:16,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 01:08:16,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 01:08:16,382 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 01:08:16,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 01:08:16,383 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 01:08:16,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 01:08:16,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 01:08:16,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 01:08:16,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 01:08:16,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 01:08:16,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 01:08:16,386 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 01:08:16,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 01:08:16,387 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 01:08:16,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 01:08:16,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 01:08:16,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 01:08:16,387 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 01:08:16,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 01:08:16,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 01:08:16,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 01:08:16,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 01:08:16,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 01:08:16,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 01:08:16,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 01:08:16,389 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 01:08:16,389 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 01:08:16,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 01:08:16,390 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 01:08:16,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 01:08:16,729 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 01:08:16,733 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 01:08:16,737 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 01:08:16,738 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 01:08:16,739 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-10-06 01:08:16,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b652e62a/be8bc8adde794a7181d1f66df3267e9a/FLAG1b81e2047 [2020-10-06 01:08:17,447 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 01:08:17,448 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-10-06 01:08:17,475 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b652e62a/be8bc8adde794a7181d1f66df3267e9a/FLAG1b81e2047 [2020-10-06 01:08:17,677 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b652e62a/be8bc8adde794a7181d1f66df3267e9a [2020-10-06 01:08:17,687 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 01:08:17,689 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 01:08:17,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 01:08:17,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 01:08:17,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 01:08:17,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:08:17" (1/1) ... [2020-10-06 01:08:17,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c9840e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:08:17, skipping insertion in model container [2020-10-06 01:08:17,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:08:17" (1/1) ... [2020-10-06 01:08:17,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 01:08:17,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 01:08:18,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:08:18,231 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 01:08:18,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:08:18,389 INFO L208 MainTranslator]: Completed translation [2020-10-06 01:08:18,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:08:18 WrapperNode [2020-10-06 01:08:18,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 01:08:18,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 01:08:18,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 01:08:18,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 01:08:18,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:08:18" (1/1) ... [2020-10-06 01:08:18,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:08:18" (1/1) ... [2020-10-06 01:08:18,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 01:08:18,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 01:08:18,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 01:08:18,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 01:08:18,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:08:18" (1/1) ... [2020-10-06 01:08:18,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:08:18" (1/1) ... [2020-10-06 01:08:18,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:08:18" (1/1) ... [2020-10-06 01:08:18,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:08:18" (1/1) ... [2020-10-06 01:08:18,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:08:18" (1/1) ... [2020-10-06 01:08:18,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:08:18" (1/1) ... [2020-10-06 01:08:18,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:08:18" (1/1) ... [2020-10-06 01:08:18,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 01:08:18,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 01:08:18,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 01:08:18,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 01:08:18,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:08:18" (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 01:08:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 01:08:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-06 01:08:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 01:08:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 01:08:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-06 01:08:18,538 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-06 01:08:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-06 01:08:18,538 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-06 01:08:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-06 01:08:18,539 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-06 01:08:18,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-06 01:08:18,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 01:08:18,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 01:08:18,541 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 01:08:18,934 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 01:08:18,935 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-06 01:08:18,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:08:18 BoogieIcfgContainer [2020-10-06 01:08:18,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 01:08:18,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 01:08:18,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 01:08:18,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 01:08:18,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 01:08:17" (1/3) ... [2020-10-06 01:08:18,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34337f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:08:18, skipping insertion in model container [2020-10-06 01:08:18,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:08:18" (2/3) ... [2020-10-06 01:08:18,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34337f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:08:18, skipping insertion in model container [2020-10-06 01:08:18,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:08:18" (3/3) ... [2020-10-06 01:08:18,947 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_tso.oepc.i [2020-10-06 01:08:18,958 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 01:08:18,959 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 01:08:18,967 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 01:08:18,967 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 01:08:18,995 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:18,995 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:18,995 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:18,996 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:18,996 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:18,996 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:18,997 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:18,997 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:18,997 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:18,998 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:18,998 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:18,999 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:18,999 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:18,999 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:19,000 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:19,000 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:19,000 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:19,001 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:19,005 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:19,005 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:19,005 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:19,006 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:19,013 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:19,013 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:19,014 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:19,014 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:19,022 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:19,022 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:19,022 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:19,022 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:08:19,036 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-06 01:08:19,054 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 01:08:19,055 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 01:08:19,055 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 01:08:19,055 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 01:08:19,055 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 01:08:19,055 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 01:08:19,056 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 01:08:19,056 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 01:08:19,070 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-06 01:08:19,072 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-06 01:08:19,117 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-06 01:08:19,117 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:08:19,123 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. [2020-10-06 01:08:19,127 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-06 01:08:19,150 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-06 01:08:19,150 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:08:19,151 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. [2020-10-06 01:08:19,153 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-10-06 01:08:19,154 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 01:08:20,562 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-10-06 01:08:20,562 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-10-06 01:08:20,566 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-06 01:08:20,591 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-06 01:08:20,593 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-06 01:08:20,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 01:08:20,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:08:20,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:08:20,602 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:08:20,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:08:20,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-10-06 01:08:20,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:08:20,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529796245] [2020-10-06 01:08:20,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:08:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:08:20,864 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 01:08:20,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529796245] [2020-10-06 01:08:20,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:08:20,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:08:20,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [800335195] [2020-10-06 01:08:20,868 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:08:20,871 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:08:20,886 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-06 01:08:20,887 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:08:20,891 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:08:20,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:08:20,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:08:20,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:08:20,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:08:20,910 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-06 01:08:20,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:08:20,960 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-06 01:08:20,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:08:20,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-06 01:08:20,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:08:20,979 INFO L225 Difference]: With dead ends: 282 [2020-10-06 01:08:20,980 INFO L226 Difference]: Without dead ends: 218 [2020-10-06 01:08:20,981 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 01:08:21,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-06 01:08:21,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-06 01:08:21,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-06 01:08:21,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-06 01:08:21,052 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-06 01:08:21,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:08:21,054 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-06 01:08:21,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:08:21,054 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-06 01:08:21,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 01:08:21,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:08:21,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:08:21,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 01:08:21,056 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:08:21,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:08:21,057 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-10-06 01:08:21,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:08:21,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753153503] [2020-10-06 01:08:21,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:08:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:08:21,126 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 01:08:21,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753153503] [2020-10-06 01:08:21,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:08:21,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:08:21,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [411163268] [2020-10-06 01:08:21,127 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:08:21,128 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:08:21,131 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-10-06 01:08:21,131 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:08:21,176 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:08:21,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:08:21,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:08:21,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:08:21,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:08:21,180 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-10-06 01:08:21,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:08:21,208 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-10-06 01:08:21,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:08:21,209 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-06 01:08:21,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:08:21,214 INFO L225 Difference]: With dead ends: 202 [2020-10-06 01:08:21,215 INFO L226 Difference]: Without dead ends: 202 [2020-10-06 01:08:21,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 01:08:21,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-06 01:08:21,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-06 01:08:21,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-06 01:08:21,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-06 01:08:21,243 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-10-06 01:08:21,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:08:21,244 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-06 01:08:21,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:08:21,244 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-06 01:08:21,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-06 01:08:21,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:08:21,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:08:21,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 01:08:21,246 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:08:21,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:08:21,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1603398907, now seen corresponding path program 1 times [2020-10-06 01:08:21,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:08:21,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941022665] [2020-10-06 01:08:21,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:08:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:08:21,300 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 01:08:21,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941022665] [2020-10-06 01:08:21,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:08:21,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:08:21,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1970638320] [2020-10-06 01:08:21,301 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:08:21,302 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:08:21,305 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-10-06 01:08:21,305 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:08:21,338 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:08:21,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:08:21,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:08:21,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:08:21,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:08:21,340 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-06 01:08:21,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:08:21,349 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-10-06 01:08:21,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:08:21,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-06 01:08:21,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:08:21,352 INFO L225 Difference]: With dead ends: 194 [2020-10-06 01:08:21,352 INFO L226 Difference]: Without dead ends: 194 [2020-10-06 01:08:21,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 01:08:21,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-06 01:08:21,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-10-06 01:08:21,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-06 01:08:21,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-10-06 01:08:21,367 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-10-06 01:08:21,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:08:21,367 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-10-06 01:08:21,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:08:21,367 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-10-06 01:08:21,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 01:08:21,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:08:21,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:08:21,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 01:08:21,370 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:08:21,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:08:21,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-10-06 01:08:21,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:08:21,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735232151] [2020-10-06 01:08:21,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:08:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:08:21,459 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 01:08:21,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735232151] [2020-10-06 01:08:21,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:08:21,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:08:21,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [873385997] [2020-10-06 01:08:21,462 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:08:21,463 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:08:21,465 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-10-06 01:08:21,466 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:08:21,506 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:08:21,533 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:08:21,558 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:08:21,565 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:08:21,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:08:21,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:08:21,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:08:21,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:08:21,566 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-10-06 01:08:21,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:08:21,599 INFO L93 Difference]: Finished difference Result 170 states and 448 transitions. [2020-10-06 01:08:21,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:08:21,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-06 01:08:21,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:08:21,599 INFO L225 Difference]: With dead ends: 170 [2020-10-06 01:08:21,600 INFO L226 Difference]: Without dead ends: 0 [2020-10-06 01:08:21,600 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 01:08:21,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-06 01:08:21,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-06 01:08:21,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-06 01:08:21,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-06 01:08:21,601 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-10-06 01:08:21,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:08:21,601 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-06 01:08:21,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:08:21,601 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-06 01:08:21,602 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-06 01:08:21,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-06 01:08:21,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 01:08:21 BasicIcfg [2020-10-06 01:08:21,606 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 01:08:21,609 INFO L168 Benchmark]: Toolchain (without parser) took 3919.36 ms. Allocated memory was 140.0 MB in the beginning and 247.5 MB in the end (delta: 107.5 MB). Free memory was 101.6 MB in the beginning and 116.4 MB in the end (delta: -14.8 MB). Peak memory consumption was 92.7 MB. Max. memory is 7.1 GB. [2020-10-06 01:08:21,610 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-06 01:08:21,611 INFO L168 Benchmark]: CACSL2BoogieTranslator took 699.61 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.2 MB in the beginning and 161.8 MB in the end (delta: -60.6 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-10-06 01:08:21,612 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.77 ms. Allocated memory is still 203.9 MB. Free memory was 161.8 MB in the beginning and 159.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-06 01:08:21,613 INFO L168 Benchmark]: Boogie Preprocessor took 26.36 ms. Allocated memory is still 203.9 MB. Free memory was 159.2 MB in the beginning and 157.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-06 01:08:21,614 INFO L168 Benchmark]: RCFGBuilder took 472.00 ms. Allocated memory is still 203.9 MB. Free memory was 157.9 MB in the beginning and 135.3 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-10-06 01:08:21,615 INFO L168 Benchmark]: TraceAbstraction took 2667.13 ms. Allocated memory was 203.9 MB in the beginning and 247.5 MB in the end (delta: 43.5 MB). Free memory was 135.3 MB in the beginning and 116.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 62.4 MB. Max. memory is 7.1 GB. [2020-10-06 01:08:21,619 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 699.61 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.2 MB in the beginning and 161.8 MB in the end (delta: -60.6 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.77 ms. Allocated memory is still 203.9 MB. Free memory was 161.8 MB in the beginning and 159.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.36 ms. Allocated memory is still 203.9 MB. Free memory was 159.2 MB in the beginning and 157.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 472.00 ms. Allocated memory is still 203.9 MB. Free memory was 157.9 MB in the beginning and 135.3 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2667.13 ms. Allocated memory was 203.9 MB in the beginning and 247.5 MB in the end (delta: 43.5 MB). Free memory was 135.3 MB in the beginning and 116.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 62.4 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, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 661 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 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: 2.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 74 SDtfs, 33 SDslu, 56 SDs, 0 SdLazy, 35 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 770 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...