/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 17:08:12,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 17:08:12,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 17:08:12,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 17:08:12,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 17:08:12,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 17:08:12,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 17:08:12,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 17:08:12,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 17:08:12,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 17:08:12,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 17:08:12,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 17:08:12,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 17:08:12,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 17:08:12,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 17:08:12,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 17:08:12,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 17:08:12,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 17:08:12,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 17:08:12,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 17:08:12,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 17:08:12,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 17:08:12,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 17:08:12,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 17:08:12,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 17:08:12,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 17:08:12,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 17:08:12,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 17:08:12,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 17:08:12,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 17:08:12,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 17:08:12,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 17:08:12,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 17:08:12,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 17:08:12,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 17:08:12,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 17:08:12,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 17:08:12,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 17:08:12,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 17:08:12,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 17:08:12,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 17:08:12,501 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-SP.epf [2020-11-09 17:08:12,529 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 17:08:12,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 17:08:12,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 17:08:12,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 17:08:12,532 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 17:08:12,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 17:08:12,532 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 17:08:12,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 17:08:12,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 17:08:12,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 17:08:12,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 17:08:12,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 17:08:12,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 17:08:12,534 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 17:08:12,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 17:08:12,535 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 17:08:12,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 17:08:12,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 17:08:12,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 17:08:12,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 17:08:12,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 17:08:12,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 17:08:12,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 17:08:12,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 17:08:12,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 17:08:12,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 17:08:12,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 17:08:12,538 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 17:08:12,538 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 17:08:12,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 17:08:12,539 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 17:08:12,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 17:08:12,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 17:08:12,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 17:08:12,946 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 17:08:12,947 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 17:08:12,949 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2020-11-09 17:08:13,032 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c76839d49/4622af0f73854c8abafbfbd6701c3051/FLAGc4d8ad3b7 [2020-11-09 17:08:13,803 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 17:08:13,804 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2020-11-09 17:08:13,820 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c76839d49/4622af0f73854c8abafbfbd6701c3051/FLAGc4d8ad3b7 [2020-11-09 17:08:14,069 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c76839d49/4622af0f73854c8abafbfbd6701c3051 [2020-11-09 17:08:14,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 17:08:14,083 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 17:08:14,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 17:08:14,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 17:08:14,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 17:08:14,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:08:14" (1/1) ... [2020-11-09 17:08:14,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b5ed30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:08:14, skipping insertion in model container [2020-11-09 17:08:14,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:08:14" (1/1) ... [2020-11-09 17:08:14,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 17:08:14,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 17:08:14,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:08:14,484 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 17:08:14,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:08:14,670 INFO L208 MainTranslator]: Completed translation [2020-11-09 17:08:14,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:08:14 WrapperNode [2020-11-09 17:08:14,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 17:08:14,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 17:08:14,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 17:08:14,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 17:08:14,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:08:14" (1/1) ... [2020-11-09 17:08:14,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:08:14" (1/1) ... [2020-11-09 17:08:14,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 17:08:14,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 17:08:14,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 17:08:14,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 17:08:14,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:08:14" (1/1) ... [2020-11-09 17:08:14,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:08:14" (1/1) ... [2020-11-09 17:08:14,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:08:14" (1/1) ... [2020-11-09 17:08:14,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:08:14" (1/1) ... [2020-11-09 17:08:14,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:08:14" (1/1) ... [2020-11-09 17:08:14,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:08:14" (1/1) ... [2020-11-09 17:08:14,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:08:14" (1/1) ... [2020-11-09 17:08:14,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 17:08:14,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 17:08:14,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 17:08:14,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 17:08:14,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:08:14" (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 [2020-11-09 17:08:14,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 17:08:14,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 17:08:14,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 17:08:14,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 17:08:14,840 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 17:08:14,840 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 17:08:14,840 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 17:08:14,840 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 17:08:14,840 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 17:08:14,841 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 17:08:14,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 17:08:14,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 17:08:14,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 17:08:14,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 17:08:14,843 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 17:08:15,378 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 17:08:15,378 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 17:08:15,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:08:15 BoogieIcfgContainer [2020-11-09 17:08:15,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 17:08:15,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 17:08:15,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 17:08:15,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 17:08:15,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:08:14" (1/3) ... [2020-11-09 17:08:15,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfd136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:08:15, skipping insertion in model container [2020-11-09 17:08:15,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:08:14" (2/3) ... [2020-11-09 17:08:15,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfd136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:08:15, skipping insertion in model container [2020-11-09 17:08:15,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:08:15" (3/3) ... [2020-11-09 17:08:15,400 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_tso.opt.i [2020-11-09 17:08:15,417 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 17:08:15,418 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 17:08:15,422 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 17:08:15,423 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 17:08:15,469 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,469 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,469 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,470 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,470 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,470 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,470 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,471 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,471 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,471 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,472 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,472 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,473 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,473 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,474 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,474 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,474 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,474 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,474 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,475 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,475 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,476 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,476 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,476 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,477 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,478 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,478 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,478 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,480 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,480 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,480 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,480 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,482 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,482 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,483 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,483 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,486 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,487 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,487 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,487 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,500 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,500 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,501 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,501 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,506 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,506 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,507 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,507 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:08:15,510 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 17:08:15,523 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 17:08:15,559 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 17:08:15,559 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 17:08:15,560 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 17:08:15,560 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 17:08:15,560 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 17:08:15,560 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 17:08:15,560 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 17:08:15,560 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 17:08:15,578 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 17:08:15,579 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-09 17:08:15,584 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-09 17:08:15,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 169 flow [2020-11-09 17:08:15,666 INFO L129 PetriNetUnfolder]: 3/74 cut-off events. [2020-11-09 17:08:15,667 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 17:08:15,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-11-09 17:08:15,685 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-11-09 17:08:18,284 WARN L194 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-11-09 17:08:18,502 WARN L194 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-11-09 17:08:18,786 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-11-09 17:08:19,246 WARN L194 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-11-09 17:08:19,548 WARN L194 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-11-09 17:08:19,660 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-11-09 17:08:20,163 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 17:08:20,269 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 17:08:20,302 INFO L131 LiptonReduction]: Checked pairs total: 3056 [2020-11-09 17:08:20,302 INFO L133 LiptonReduction]: Total number of compositions: 75 [2020-11-09 17:08:20,310 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 21 transitions, 57 flow [2020-11-09 17:08:20,334 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-11-09 17:08:20,336 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-11-09 17:08:20,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 17:08:20,344 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:08:20,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:08:20,345 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:08:20,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:08:20,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1972841711, now seen corresponding path program 1 times [2020-11-09 17:08:20,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:08:20,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299024965] [2020-11-09 17:08:20,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:08:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:08:20,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:08:20,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299024965] [2020-11-09 17:08:20,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:08:20,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 17:08:20,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [589101153] [2020-11-09 17:08:20,594 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:08:20,597 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:08:20,611 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 17:08:20,611 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:08:20,616 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:08:20,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:08:20,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:08:20,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:08:20,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:08:20,635 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-11-09 17:08:20,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:08:20,672 INFO L93 Difference]: Finished difference Result 220 states and 612 transitions. [2020-11-09 17:08:20,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:08:20,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-09 17:08:20,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:08:20,687 INFO L225 Difference]: With dead ends: 220 [2020-11-09 17:08:20,688 INFO L226 Difference]: Without dead ends: 172 [2020-11-09 17:08:20,689 INFO L677 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 [2020-11-09 17:08:20,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-11-09 17:08:20,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-11-09 17:08:20,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-11-09 17:08:20,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 460 transitions. [2020-11-09 17:08:20,750 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 460 transitions. Word has length 8 [2020-11-09 17:08:20,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:08:20,751 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 460 transitions. [2020-11-09 17:08:20,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:08:20,751 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 460 transitions. [2020-11-09 17:08:20,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 17:08:20,752 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:08:20,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:08:20,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 17:08:20,753 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:08:20,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:08:20,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1028549814, now seen corresponding path program 1 times [2020-11-09 17:08:20,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:08:20,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112147753] [2020-11-09 17:08:20,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:08:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:08:20,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:08:20,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112147753] [2020-11-09 17:08:20,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:08:20,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 17:08:20,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1881601490] [2020-11-09 17:08:20,832 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:08:20,833 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:08:20,836 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-11-09 17:08:20,836 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:08:20,899 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:08:20,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:08:20,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:08:20,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:08:20,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:08:20,902 INFO L87 Difference]: Start difference. First operand 172 states and 460 transitions. Second operand 3 states. [2020-11-09 17:08:20,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:08:20,911 INFO L93 Difference]: Finished difference Result 163 states and 430 transitions. [2020-11-09 17:08:20,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:08:20,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-09 17:08:20,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:08:20,914 INFO L225 Difference]: With dead ends: 163 [2020-11-09 17:08:20,914 INFO L226 Difference]: Without dead ends: 163 [2020-11-09 17:08:20,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:08:20,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-09 17:08:20,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-09 17:08:20,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-09 17:08:20,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 430 transitions. [2020-11-09 17:08:20,934 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 430 transitions. Word has length 9 [2020-11-09 17:08:20,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:08:20,934 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 430 transitions. [2020-11-09 17:08:20,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:08:20,935 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 430 transitions. [2020-11-09 17:08:20,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 17:08:20,936 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:08:20,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:08:20,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 17:08:20,936 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:08:20,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:08:20,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1819291053, now seen corresponding path program 1 times [2020-11-09 17:08:20,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:08:20,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677863556] [2020-11-09 17:08:20,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:08:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:08:21,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:08:21,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677863556] [2020-11-09 17:08:21,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:08:21,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:08:21,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1484441200] [2020-11-09 17:08:21,044 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:08:21,046 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:08:21,048 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-11-09 17:08:21,048 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:08:21,049 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:08:21,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:08:21,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:08:21,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:08:21,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:08:21,054 INFO L87 Difference]: Start difference. First operand 163 states and 430 transitions. Second operand 3 states. [2020-11-09 17:08:21,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:08:21,098 INFO L93 Difference]: Finished difference Result 211 states and 528 transitions. [2020-11-09 17:08:21,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:08:21,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-09 17:08:21,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:08:21,104 INFO L225 Difference]: With dead ends: 211 [2020-11-09 17:08:21,104 INFO L226 Difference]: Without dead ends: 175 [2020-11-09 17:08:21,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:08:21,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-11-09 17:08:21,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 157. [2020-11-09 17:08:21,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-09 17:08:21,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 393 transitions. [2020-11-09 17:08:21,118 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 393 transitions. Word has length 10 [2020-11-09 17:08:21,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:08:21,119 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 393 transitions. [2020-11-09 17:08:21,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:08:21,119 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 393 transitions. [2020-11-09 17:08:21,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 17:08:21,120 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:08:21,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:08:21,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 17:08:21,121 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:08:21,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:08:21,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1819353363, now seen corresponding path program 1 times [2020-11-09 17:08:21,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:08:21,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072392222] [2020-11-09 17:08:21,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:08:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:08:21,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:08:21,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072392222] [2020-11-09 17:08:21,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:08:21,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:08:21,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [63526188] [2020-11-09 17:08:21,232 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:08:21,234 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:08:21,236 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-11-09 17:08:21,236 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:08:21,294 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:08:21,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:08:21,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:08:21,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:08:21,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:08:21,296 INFO L87 Difference]: Start difference. First operand 157 states and 393 transitions. Second operand 4 states. [2020-11-09 17:08:21,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:08:21,337 INFO L93 Difference]: Finished difference Result 196 states and 467 transitions. [2020-11-09 17:08:21,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:08:21,337 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-09 17:08:21,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:08:21,339 INFO L225 Difference]: With dead ends: 196 [2020-11-09 17:08:21,339 INFO L226 Difference]: Without dead ends: 124 [2020-11-09 17:08:21,339 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 [2020-11-09 17:08:21,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-09 17:08:21,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-11-09 17:08:21,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-11-09 17:08:21,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 291 transitions. [2020-11-09 17:08:21,347 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 291 transitions. Word has length 10 [2020-11-09 17:08:21,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:08:21,348 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 291 transitions. [2020-11-09 17:08:21,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:08:21,348 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 291 transitions. [2020-11-09 17:08:21,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 17:08:21,349 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:08:21,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:08:21,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 17:08:21,350 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:08:21,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:08:21,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1404816041, now seen corresponding path program 1 times [2020-11-09 17:08:21,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:08:21,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243862324] [2020-11-09 17:08:21,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:08:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:08:21,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:08:21,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243862324] [2020-11-09 17:08:21,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:08:21,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:08:21,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [544082514] [2020-11-09 17:08:21,456 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:08:21,458 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:08:21,461 INFO L252 McrAutomatonBuilder]: Finished intersection with 27 states and 45 transitions. [2020-11-09 17:08:21,462 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:08:21,486 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:08:21,535 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:08:21,552 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:08:21,568 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:08:21,678 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2580#(not (= 3 ~__unbuffered_cnt~0))] [2020-11-09 17:08:21,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:08:21,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:08:21,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:08:21,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:08:21,680 INFO L87 Difference]: Start difference. First operand 124 states and 291 transitions. Second operand 5 states. [2020-11-09 17:08:21,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:08:21,757 INFO L93 Difference]: Finished difference Result 120 states and 257 transitions. [2020-11-09 17:08:21,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 17:08:21,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-09 17:08:21,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:08:21,759 INFO L225 Difference]: With dead ends: 120 [2020-11-09 17:08:21,759 INFO L226 Difference]: Without dead ends: 84 [2020-11-09 17:08:21,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:08:21,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-09 17:08:21,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-11-09 17:08:21,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-09 17:08:21,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 164 transitions. [2020-11-09 17:08:21,765 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 164 transitions. Word has length 11 [2020-11-09 17:08:21,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:08:21,766 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 164 transitions. [2020-11-09 17:08:21,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:08:21,766 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 164 transitions. [2020-11-09 17:08:21,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 17:08:21,770 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:08:21,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:08:21,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 17:08:21,771 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:08:21,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:08:21,773 INFO L82 PathProgramCache]: Analyzing trace with hash 489181955, now seen corresponding path program 1 times [2020-11-09 17:08:21,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:08:21,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273655396] [2020-11-09 17:08:21,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:08:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:08:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:08:21,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273655396] [2020-11-09 17:08:21,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:08:21,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 17:08:21,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [855003560] [2020-11-09 17:08:21,909 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:08:21,913 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:08:21,920 INFO L252 McrAutomatonBuilder]: Finished intersection with 37 states and 62 transitions. [2020-11-09 17:08:21,920 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:08:21,934 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:08:22,026 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [2880#(not (= ~__unbuffered_cnt~0 2)), 2881#(not (= ~__unbuffered_cnt~0 1)), 2882#(<= ~__unbuffered_cnt~0 0), 2879#(not (= 3 ~__unbuffered_cnt~0))] [2020-11-09 17:08:22,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-09 17:08:22,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:08:22,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-09 17:08:22,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-09 17:08:22,028 INFO L87 Difference]: Start difference. First operand 84 states and 164 transitions. Second operand 10 states. [2020-11-09 17:08:22,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:08:22,121 INFO L93 Difference]: Finished difference Result 80 states and 154 transitions. [2020-11-09 17:08:22,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 17:08:22,121 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-09 17:08:22,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:08:22,122 INFO L225 Difference]: With dead ends: 80 [2020-11-09 17:08:22,122 INFO L226 Difference]: Without dead ends: 33 [2020-11-09 17:08:22,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-11-09 17:08:22,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-09 17:08:22,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-09 17:08:22,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-09 17:08:22,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-11-09 17:08:22,126 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2020-11-09 17:08:22,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:08:22,127 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-11-09 17:08:22,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-09 17:08:22,127 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-11-09 17:08:22,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 17:08:22,128 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:08:22,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:08:22,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 17:08:22,128 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:08:22,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:08:22,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1917932335, now seen corresponding path program 1 times [2020-11-09 17:08:22,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:08:22,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838149447] [2020-11-09 17:08:22,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:08:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:08:22,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:08:22,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838149447] [2020-11-09 17:08:22,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:08:22,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:08:22,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [612863332] [2020-11-09 17:08:22,187 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:08:22,194 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:08:22,201 INFO L252 McrAutomatonBuilder]: Finished intersection with 48 states and 84 transitions. [2020-11-09 17:08:22,204 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:08:22,239 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:08:22,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:08:22,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:08:22,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:08:22,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:08:22,240 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-11-09 17:08:22,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:08:22,254 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-11-09 17:08:22,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:08:22,255 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-09 17:08:22,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:08:22,255 INFO L225 Difference]: With dead ends: 32 [2020-11-09 17:08:22,255 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 17:08:22,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:08:22,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 17:08:22,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 17:08:22,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 17:08:22,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 17:08:22,256 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-11-09 17:08:22,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:08:22,257 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 17:08:22,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:08:22,257 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 17:08:22,258 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 17:08:22,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 17:08:22,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:08:22 BasicIcfg [2020-11-09 17:08:22,261 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 17:08:22,268 INFO L168 Benchmark]: Toolchain (without parser) took 8185.23 ms. Allocated memory was 168.8 MB in the beginning and 280.0 MB in the end (delta: 111.1 MB). Free memory was 142.7 MB in the beginning and 181.8 MB in the end (delta: -39.1 MB). Peak memory consumption was 73.5 MB. Max. memory is 8.0 GB. [2020-11-09 17:08:22,269 INFO L168 Benchmark]: CDTParser took 0.64 ms. Allocated memory is still 168.8 MB. Free memory is still 140.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 17:08:22,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 586.74 ms. Allocated memory is still 168.8 MB. Free memory was 142.0 MB in the beginning and 146.9 MB in the end (delta: -4.9 MB). Peak memory consumption was 31.4 MB. Max. memory is 8.0 GB. [2020-11-09 17:08:22,271 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.88 ms. Allocated memory is still 168.8 MB. Free memory was 146.4 MB in the beginning and 144.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 17:08:22,272 INFO L168 Benchmark]: Boogie Preprocessor took 30.51 ms. Allocated memory is still 168.8 MB. Free memory was 144.3 MB in the beginning and 143.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:08:22,272 INFO L168 Benchmark]: RCFGBuilder took 625.67 ms. Allocated memory is still 168.8 MB. Free memory was 143.2 MB in the beginning and 120.9 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:08:22,276 INFO L168 Benchmark]: TraceAbstraction took 6872.74 ms. Allocated memory was 168.8 MB in the beginning and 280.0 MB in the end (delta: 111.1 MB). Free memory was 120.2 MB in the beginning and 181.8 MB in the end (delta: -61.7 MB). Peak memory consumption was 49.5 MB. Max. memory is 8.0 GB. [2020-11-09 17:08:22,282 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64 ms. Allocated memory is still 168.8 MB. Free memory is still 140.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 586.74 ms. Allocated memory is still 168.8 MB. Free memory was 142.0 MB in the beginning and 146.9 MB in the end (delta: -4.9 MB). Peak memory consumption was 31.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 53.88 ms. Allocated memory is still 168.8 MB. Free memory was 146.4 MB in the beginning and 144.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.51 ms. Allocated memory is still 168.8 MB. Free memory was 144.3 MB in the beginning and 143.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 625.67 ms. Allocated memory is still 168.8 MB. Free memory was 143.2 MB in the beginning and 120.9 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6872.74 ms. Allocated memory was 168.8 MB in the beginning and 280.0 MB in the end (delta: 111.1 MB). Free memory was 120.2 MB in the beginning and 181.8 MB in the end (delta: -61.7 MB). Peak memory consumption was 49.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 741 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 47 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.7s, 84 PlacesBefore, 30 PlacesAfterwards, 77 TransitionsBefore, 21 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 75 TotalNumberOfCompositions, 3056 MoverChecksTotal - PositiveResult [Line: 17]: 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, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.7s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 117 SDtfs, 109 SDslu, 137 SDs, 0 SdLazy, 89 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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, 7 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 2245 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...