/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/safe020_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:41:09,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:41:09,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:41:09,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:41:09,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:41:09,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:41:09,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:41:09,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:41:09,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:41:09,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:41:09,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:41:09,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:41:09,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:41:09,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:41:09,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:41:09,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:41:09,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:41:09,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:41:09,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:41:09,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:41:09,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:41:09,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:41:09,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:41:09,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:41:09,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:41:09,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:41:09,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:41:09,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:41:09,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:41:09,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:41:09,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:41:09,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:41:09,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:41:09,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:41:09,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:41:09,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:41:09,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:41:09,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:41:09,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:41:09,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:41:09,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:41:09,538 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 13:41:09,559 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:41:09,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:41:09,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:41:09,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:41:09,561 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:41:09,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:41:09,562 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:41:09,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:41:09,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:41:09,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:41:09,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:41:09,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:41:09,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:41:09,563 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:41:09,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:41:09,564 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:41:09,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:41:09,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:41:09,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:41:09,564 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:41:09,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:41:09,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:41:09,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:41:09,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:41:09,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:41:09,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:41:09,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:41:09,566 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:41:09,566 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:41:09,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:41:09,566 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:41:09,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:41:09,873 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:41:09,877 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:41:09,879 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:41:09,879 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:41:09,882 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2020-10-16 13:41:09,955 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8325f727b/d12b325f99624ee3a821a0f0777db73f/FLAG8b31d0bc3 [2020-10-16 13:41:10,522 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:41:10,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2020-10-16 13:41:10,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8325f727b/d12b325f99624ee3a821a0f0777db73f/FLAG8b31d0bc3 [2020-10-16 13:41:10,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8325f727b/d12b325f99624ee3a821a0f0777db73f [2020-10-16 13:41:10,844 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:41:10,846 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:41:10,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:41:10,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:41:10,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:41:10,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:41:10" (1/1) ... [2020-10-16 13:41:10,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6947da88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:10, skipping insertion in model container [2020-10-16 13:41:10,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:41:10" (1/1) ... [2020-10-16 13:41:10,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:41:10,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:41:11,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:41:11,432 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:41:11,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:41:11,606 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:41:11,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:11 WrapperNode [2020-10-16 13:41:11,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:41:11,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:41:11,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:41:11,608 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:41:11,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:11" (1/1) ... [2020-10-16 13:41:11,635 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:11" (1/1) ... [2020-10-16 13:41:11,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:41:11,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:41:11,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:41:11,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:41:11,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:11" (1/1) ... [2020-10-16 13:41:11,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:11" (1/1) ... [2020-10-16 13:41:11,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:11" (1/1) ... [2020-10-16 13:41:11,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:11" (1/1) ... [2020-10-16 13:41:11,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:11" (1/1) ... [2020-10-16 13:41:11,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:11" (1/1) ... [2020-10-16 13:41:11,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:11" (1/1) ... [2020-10-16 13:41:11,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:41:11,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:41:11,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:41:11,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:41:11,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:41:11,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:41:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:41:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:41:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:41:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:41:11,775 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:41:11,775 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:41:11,775 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:41:11,775 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:41:11,775 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:41:11,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:41:11,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:41:11,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:41:11,777 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 13:41:12,137 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:41:12,137 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:41:12,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:41:12 BoogieIcfgContainer [2020-10-16 13:41:12,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:41:12,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:41:12,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:41:12,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:41:12,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:41:10" (1/3) ... [2020-10-16 13:41:12,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45873f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:41:12, skipping insertion in model container [2020-10-16 13:41:12,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:11" (2/3) ... [2020-10-16 13:41:12,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45873f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:41:12, skipping insertion in model container [2020-10-16 13:41:12,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:41:12" (3/3) ... [2020-10-16 13:41:12,150 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_tso.opt.i [2020-10-16 13:41:12,163 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:41:12,164 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:41:12,185 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:41:12,187 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:41:12,232 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,233 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,236 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,239 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,240 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,241 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,241 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,241 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,242 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,242 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,242 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,243 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,243 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,243 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,244 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,244 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,247 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,248 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,257 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,259 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,259 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,259 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,270 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,271 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,272 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,272 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,280 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,281 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,281 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,282 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:12,290 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:41:12,302 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:41:12,323 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:41:12,324 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:41:12,324 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:41:12,324 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:41:12,324 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:41:12,324 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:41:12,325 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:41:12,325 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:41:12,338 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:41:12,339 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-10-16 13:41:12,342 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 68 transitions, 151 flow [2020-10-16 13:41:12,344 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-16 13:41:12,389 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-16 13:41:12,390 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:41:12,396 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-16 13:41:12,399 INFO L117 LiptonReduction]: Number of co-enabled transitions 1178 [2020-10-16 13:41:13,720 INFO L132 LiptonReduction]: Checked pairs total: 2372 [2020-10-16 13:41:13,721 INFO L134 LiptonReduction]: Total number of compositions: 57 [2020-10-16 13:41:13,728 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-16 13:41:13,755 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-10-16 13:41:13,757 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-10-16 13:41:13,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:41:13,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:41:13,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:41:13,777 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:41:13,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:41:13,783 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-10-16 13:41:13,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:41:13,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397258909] [2020-10-16 13:41:13,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:41:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:41:13,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:41:13,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397258909] [2020-10-16 13:41:13,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:41:13,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:41:13,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1703767626] [2020-10-16 13:41:13,998 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:41:14,001 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:41:14,018 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 13:41:14,018 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:41:14,022 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:41:14,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 13:41:14,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:41:14,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 13:41:14,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 13:41:14,042 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-10-16 13:41:14,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:41:14,063 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-10-16 13:41:14,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 13:41:14,065 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-16 13:41:14,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:41:14,082 INFO L225 Difference]: With dead ends: 274 [2020-10-16 13:41:14,082 INFO L226 Difference]: Without dead ends: 226 [2020-10-16 13:41:14,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 13:41:14,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-16 13:41:14,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-16 13:41:14,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-16 13:41:14,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-10-16 13:41:14,161 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-10-16 13:41:14,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:41:14,162 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-10-16 13:41:14,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 13:41:14,162 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-10-16 13:41:14,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:41:14,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:41:14,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:41:14,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:41:14,165 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:41:14,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:41:14,166 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-10-16 13:41:14,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:41:14,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906374113] [2020-10-16 13:41:14,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:41:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:41:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:41:14,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906374113] [2020-10-16 13:41:14,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:41:14,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:41:14,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1515833444] [2020-10-16 13:41:14,330 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:41:14,331 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:41:14,333 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-16 13:41:14,333 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:41:14,334 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:41:14,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:41:14,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:41:14,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:41:14,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:41:14,336 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-10-16 13:41:14,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:41:14,378 INFO L93 Difference]: Finished difference Result 262 states and 700 transitions. [2020-10-16 13:41:14,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:41:14,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 13:41:14,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:41:14,382 INFO L225 Difference]: With dead ends: 262 [2020-10-16 13:41:14,382 INFO L226 Difference]: Without dead ends: 214 [2020-10-16 13:41:14,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:41:14,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-16 13:41:14,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-10-16 13:41:14,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-16 13:41:14,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 590 transitions. [2020-10-16 13:41:14,406 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 590 transitions. Word has length 9 [2020-10-16 13:41:14,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:41:14,406 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 590 transitions. [2020-10-16 13:41:14,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:41:14,407 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 590 transitions. [2020-10-16 13:41:14,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:41:14,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:41:14,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:41:14,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:41:14,409 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:41:14,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:41:14,409 INFO L82 PathProgramCache]: Analyzing trace with hash 984763373, now seen corresponding path program 1 times [2020-10-16 13:41:14,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:41:14,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326082870] [2020-10-16 13:41:14,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:41:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:41:14,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:41:14,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326082870] [2020-10-16 13:41:14,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:41:14,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:41:14,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [586734855] [2020-10-16 13:41:14,499 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:41:14,500 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:41:14,504 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-10-16 13:41:14,505 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:41:14,559 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:41:14,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:41:14,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:41:14,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:41:14,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:41:14,561 INFO L87 Difference]: Start difference. First operand 214 states and 590 transitions. Second operand 5 states. [2020-10-16 13:41:14,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:41:14,626 INFO L93 Difference]: Finished difference Result 232 states and 614 transitions. [2020-10-16 13:41:14,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:41:14,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-16 13:41:14,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:41:14,629 INFO L225 Difference]: With dead ends: 232 [2020-10-16 13:41:14,629 INFO L226 Difference]: Without dead ends: 196 [2020-10-16 13:41:14,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:41:14,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-16 13:41:14,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-10-16 13:41:14,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-16 13:41:14,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 530 transitions. [2020-10-16 13:41:14,649 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 530 transitions. Word has length 10 [2020-10-16 13:41:14,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:41:14,649 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 530 transitions. [2020-10-16 13:41:14,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:41:14,649 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 530 transitions. [2020-10-16 13:41:14,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:41:14,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:41:14,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:41:14,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:41:14,652 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:41:14,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:41:14,652 INFO L82 PathProgramCache]: Analyzing trace with hash 462854661, now seen corresponding path program 1 times [2020-10-16 13:41:14,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:41:14,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917336337] [2020-10-16 13:41:14,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:41:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:41:14,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:41:14,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917336337] [2020-10-16 13:41:14,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:41:14,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:41:14,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [571618893] [2020-10-16 13:41:14,786 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:41:14,787 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:41:14,789 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-10-16 13:41:14,789 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:41:14,829 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:41:14,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 13:41:14,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:41:14,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 13:41:14,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-16 13:41:14,831 INFO L87 Difference]: Start difference. First operand 196 states and 530 transitions. Second operand 6 states. [2020-10-16 13:41:14,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:41:14,935 INFO L93 Difference]: Finished difference Result 255 states and 672 transitions. [2020-10-16 13:41:14,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 13:41:14,935 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-16 13:41:14,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:41:14,937 INFO L225 Difference]: With dead ends: 255 [2020-10-16 13:41:14,937 INFO L226 Difference]: Without dead ends: 150 [2020-10-16 13:41:14,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-16 13:41:14,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-16 13:41:14,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-10-16 13:41:14,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-16 13:41:14,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-10-16 13:41:14,948 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-10-16 13:41:14,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:41:14,949 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-10-16 13:41:14,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 13:41:14,949 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-10-16 13:41:14,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 13:41:14,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:41:14,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:41:14,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:41:14,951 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:41:14,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:41:14,951 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-10-16 13:41:14,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:41:14,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782154152] [2020-10-16 13:41:14,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:41:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:41:15,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:41:15,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782154152] [2020-10-16 13:41:15,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:41:15,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:41:15,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [723466792] [2020-10-16 13:41:15,045 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:41:15,046 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:41:15,050 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 46 transitions. [2020-10-16 13:41:15,050 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:41:15,072 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:41:15,116 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:41:15,139 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:41:15,162 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:41:15,197 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:41:15,230 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3259#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-16 13:41:15,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:41:15,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:41:15,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:41:15,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:41:15,232 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 5 states. [2020-10-16 13:41:15,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:41:15,311 INFO L93 Difference]: Finished difference Result 128 states and 285 transitions. [2020-10-16 13:41:15,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:41:15,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-16 13:41:15,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:41:15,314 INFO L225 Difference]: With dead ends: 128 [2020-10-16 13:41:15,314 INFO L226 Difference]: Without dead ends: 92 [2020-10-16 13:41:15,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:41:15,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-16 13:41:15,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-16 13:41:15,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-16 13:41:15,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-10-16 13:41:15,322 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 12 [2020-10-16 13:41:15,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:41:15,322 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-10-16 13:41:15,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:41:15,323 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-10-16 13:41:15,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:41:15,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:41:15,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:41:15,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:41:15,325 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:41:15,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:41:15,326 INFO L82 PathProgramCache]: Analyzing trace with hash -228576461, now seen corresponding path program 1 times [2020-10-16 13:41:15,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:41:15,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485856264] [2020-10-16 13:41:15,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:41:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:41:15,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:41:15,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485856264] [2020-10-16 13:41:15,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:41:15,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:41:15,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1479696851] [2020-10-16 13:41:15,437 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:41:15,439 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:41:15,442 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 13:41:15,442 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:41:15,447 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:41:15,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:41:15,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:41:15,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:41:15,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:41:15,449 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 4 states. [2020-10-16 13:41:15,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:41:15,478 INFO L93 Difference]: Finished difference Result 120 states and 228 transitions. [2020-10-16 13:41:15,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:41:15,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-16 13:41:15,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:41:15,480 INFO L225 Difference]: With dead ends: 120 [2020-10-16 13:41:15,480 INFO L226 Difference]: Without dead ends: 94 [2020-10-16 13:41:15,480 INFO L677 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 [2020-10-16 13:41:15,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-16 13:41:15,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-10-16 13:41:15,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-16 13:41:15,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 175 transitions. [2020-10-16 13:41:15,494 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 175 transitions. Word has length 14 [2020-10-16 13:41:15,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:41:15,495 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 175 transitions. [2020-10-16 13:41:15,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:41:15,495 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 175 transitions. [2020-10-16 13:41:15,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:41:15,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:41:15,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:41:15,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:41:15,500 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:41:15,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:41:15,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1357686433, now seen corresponding path program 1 times [2020-10-16 13:41:15,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:41:15,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201929623] [2020-10-16 13:41:15,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:41:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:41:15,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:41:15,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201929623] [2020-10-16 13:41:15,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:41:15,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:41:15,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1006620225] [2020-10-16 13:41:15,611 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:41:15,614 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:41:15,622 INFO L258 McrAutomatonBuilder]: Finished intersection with 44 states and 79 transitions. [2020-10-16 13:41:15,622 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:41:15,760 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:41:15,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:41:15,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:41:15,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:41:15,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:41:15,763 INFO L87 Difference]: Start difference. First operand 90 states and 175 transitions. Second operand 5 states. [2020-10-16 13:41:15,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:41:15,796 INFO L93 Difference]: Finished difference Result 113 states and 209 transitions. [2020-10-16 13:41:15,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:41:15,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-16 13:41:15,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:41:15,797 INFO L225 Difference]: With dead ends: 113 [2020-10-16 13:41:15,798 INFO L226 Difference]: Without dead ends: 70 [2020-10-16 13:41:15,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:41:15,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-16 13:41:15,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-10-16 13:41:15,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-16 13:41:15,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 115 transitions. [2020-10-16 13:41:15,803 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 115 transitions. Word has length 15 [2020-10-16 13:41:15,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:41:15,805 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 115 transitions. [2020-10-16 13:41:15,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:41:15,806 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 115 transitions. [2020-10-16 13:41:15,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:41:15,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:41:15,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:41:15,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:41:15,807 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:41:15,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:41:15,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1504039886, now seen corresponding path program 1 times [2020-10-16 13:41:15,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:41:15,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20684902] [2020-10-16 13:41:15,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:41:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:41:15,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:41:15,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20684902] [2020-10-16 13:41:15,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:41:15,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:41:15,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1086763768] [2020-10-16 13:41:15,883 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:41:15,884 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:41:15,889 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 63 transitions. [2020-10-16 13:41:15,889 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:41:15,895 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:41:15,955 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [4148#(not (= 3 ~__unbuffered_cnt~0)), 4149#(not (= ~__unbuffered_cnt~0 2)), 4150#(not (= ~__unbuffered_cnt~0 1)), 4151#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:41:15,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 13:41:15,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:41:15,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 13:41:15,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-16 13:41:15,957 INFO L87 Difference]: Start difference. First operand 68 states and 115 transitions. Second operand 10 states. [2020-10-16 13:41:15,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:41:15,992 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-10-16 13:41:15,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:41:15,992 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-10-16 13:41:15,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:41:15,993 INFO L225 Difference]: With dead ends: 58 [2020-10-16 13:41:15,993 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:41:15,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-16 13:41:15,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:41:15,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:41:15,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:41:15,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:41:15,995 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-16 13:41:15,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:41:15,995 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:41:15,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 13:41:15,995 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:41:15,996 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:41:15,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 13:41:16,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:41:16 BasicIcfg [2020-10-16 13:41:16,001 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:41:16,004 INFO L168 Benchmark]: Toolchain (without parser) took 5157.57 ms. Allocated memory was 139.5 MB in the beginning and 248.5 MB in the end (delta: 109.1 MB). Free memory was 100.9 MB in the beginning and 134.3 MB in the end (delta: -33.4 MB). Peak memory consumption was 75.6 MB. Max. memory is 7.1 GB. [2020-10-16 13:41:16,005 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 13:41:16,006 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.82 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 160.6 MB in the end (delta: -59.9 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2020-10-16 13:41:16,007 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.27 ms. Allocated memory is still 202.9 MB. Free memory was 160.6 MB in the beginning and 158.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:41:16,007 INFO L168 Benchmark]: Boogie Preprocessor took 30.77 ms. Allocated memory is still 202.9 MB. Free memory was 158.5 MB in the beginning and 157.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-16 13:41:16,008 INFO L168 Benchmark]: RCFGBuilder took 445.24 ms. Allocated memory is still 202.9 MB. Free memory was 157.2 MB in the beginning and 135.3 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-10-16 13:41:16,009 INFO L168 Benchmark]: TraceAbstraction took 3858.98 ms. Allocated memory was 202.9 MB in the beginning and 248.5 MB in the end (delta: 45.6 MB). Free memory was 134.6 MB in the beginning and 134.3 MB in the end (delta: 338.2 kB). Peak memory consumption was 46.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:41:16,013 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 759.82 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 160.6 MB in the end (delta: -59.9 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.27 ms. Allocated memory is still 202.9 MB. Free memory was 160.6 MB in the beginning and 158.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.77 ms. Allocated memory is still 202.9 MB. Free memory was 158.5 MB in the beginning and 157.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 445.24 ms. Allocated memory is still 202.9 MB. Free memory was 157.2 MB in the beginning and 135.3 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3858.98 ms. Allocated memory was 202.9 MB in the beginning and 248.5 MB in the end (delta: 45.6 MB). Free memory was 134.6 MB in the beginning and 134.3 MB in the end (delta: 338.2 kB). Peak memory consumption was 46.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 601 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 25 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 76 PlacesBefore, 31 PlacesAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 57 TotalNumberOfCompositions, 2372 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 161 SDtfs, 188 SDslu, 290 SDs, 0 SdLazy, 150 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 69 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 3161 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...