/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-14 22:53:43,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-14 22:53:43,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-14 22:53:43,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-14 22:53:43,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-14 22:53:43,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-14 22:53:43,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-14 22:53:43,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-14 22:53:43,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-14 22:53:43,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-14 22:53:43,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-14 22:53:43,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-14 22:53:43,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-14 22:53:43,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-14 22:53:43,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-14 22:53:43,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-14 22:53:43,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-14 22:53:43,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-14 22:53:43,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-14 22:53:43,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-14 22:53:43,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-14 22:53:43,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-14 22:53:43,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-14 22:53:43,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-14 22:53:43,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-14 22:53:43,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-14 22:53:43,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-14 22:53:43,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-14 22:53:43,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-14 22:53:43,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-14 22:53:43,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-14 22:53:43,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-14 22:53:43,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-14 22:53:43,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-14 22:53:43,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-14 22:53:43,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-14 22:53:43,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-14 22:53:43,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-14 22:53:43,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-14 22:53:43,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-14 22:53:43,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-14 22:53:43,659 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-14 22:53:43,683 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-14 22:53:43,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-14 22:53:43,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-14 22:53:43,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-14 22:53:43,686 INFO L138 SettingsManager]: * Use SBE=true [2020-09-14 22:53:43,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-14 22:53:43,686 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-14 22:53:43,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-14 22:53:43,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-14 22:53:43,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-14 22:53:43,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-14 22:53:43,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-14 22:53:43,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-14 22:53:43,687 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-14 22:53:43,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-14 22:53:43,688 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-14 22:53:43,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-14 22:53:43,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-14 22:53:43,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-14 22:53:43,689 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-14 22:53:43,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-14 22:53:43,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 22:53:43,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-14 22:53:43,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-14 22:53:43,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-14 22:53:43,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-14 22:53:43,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-14 22:53:43,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-14 22:53:43,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-14 22:53:43,694 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-14 22:53:44,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-14 22:53:44,133 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-14 22:53:44,138 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-14 22:53:44,139 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-14 22:53:44,142 INFO L275 PluginConnector]: CDTParser initialized [2020-09-14 22:53:44,143 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-09-14 22:53:44,220 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d03d76158/9893511ecb4d4c03a553d0d59f239775/FLAG1bf06b54c [2020-09-14 22:53:44,812 INFO L306 CDTParser]: Found 1 translation units. [2020-09-14 22:53:44,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-09-14 22:53:44,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d03d76158/9893511ecb4d4c03a553d0d59f239775/FLAG1bf06b54c [2020-09-14 22:53:45,086 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d03d76158/9893511ecb4d4c03a553d0d59f239775 [2020-09-14 22:53:45,100 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-14 22:53:45,106 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-14 22:53:45,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-14 22:53:45,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-14 22:53:45,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-14 22:53:45,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 10:53:45" (1/1) ... [2020-09-14 22:53:45,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ece116e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:53:45, skipping insertion in model container [2020-09-14 22:53:45,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 10:53:45" (1/1) ... [2020-09-14 22:53:45,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-14 22:53:45,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-14 22:53:45,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 22:53:45,717 INFO L203 MainTranslator]: Completed pre-run [2020-09-14 22:53:45,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 22:53:45,871 INFO L208 MainTranslator]: Completed translation [2020-09-14 22:53:45,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:53:45 WrapperNode [2020-09-14 22:53:45,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-14 22:53:45,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-14 22:53:45,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-14 22:53:45,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-14 22:53:45,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:53:45" (1/1) ... [2020-09-14 22:53:45,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:53:45" (1/1) ... [2020-09-14 22:53:45,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-14 22:53:45,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-14 22:53:45,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-14 22:53:45,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-14 22:53:45,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:53:45" (1/1) ... [2020-09-14 22:53:45,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:53:45" (1/1) ... [2020-09-14 22:53:45,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:53:45" (1/1) ... [2020-09-14 22:53:45,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:53:45" (1/1) ... [2020-09-14 22:53:45,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:53:45" (1/1) ... [2020-09-14 22:53:45,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:53:45" (1/1) ... [2020-09-14 22:53:45,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:53:45" (1/1) ... [2020-09-14 22:53:45,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-14 22:53:45,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-14 22:53:45,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-14 22:53:45,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-14 22:53:45,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:53:45" (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 [2020-09-14 22:53:46,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-14 22:53:46,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-14 22:53:46,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-14 22:53:46,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-14 22:53:46,044 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-14 22:53:46,044 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-14 22:53:46,044 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-14 22:53:46,044 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-14 22:53:46,045 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-14 22:53:46,045 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-14 22:53:46,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-14 22:53:46,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-14 22:53:46,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-14 22:53:46,047 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-14 22:53:46,451 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-14 22:53:46,452 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-14 22:53:46,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 10:53:46 BoogieIcfgContainer [2020-09-14 22:53:46,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-14 22:53:46,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-14 22:53:46,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-14 22:53:46,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-14 22:53:46,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 10:53:45" (1/3) ... [2020-09-14 22:53:46,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3696fadb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 10:53:46, skipping insertion in model container [2020-09-14 22:53:46,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:53:45" (2/3) ... [2020-09-14 22:53:46,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3696fadb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 10:53:46, skipping insertion in model container [2020-09-14 22:53:46,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 10:53:46" (3/3) ... [2020-09-14 22:53:46,467 INFO L109 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2020-09-14 22:53:46,479 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-14 22:53:46,479 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-14 22:53:46,489 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-14 22:53:46,490 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-14 22:53:46,521 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,522 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,522 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,522 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,523 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,523 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,524 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,524 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,524 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,524 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,525 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,525 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,526 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,526 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,526 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,526 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,527 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,527 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,531 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,532 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,532 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,532 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,541 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,541 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,541 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,542 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,545 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,546 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,546 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,546 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:53:46,571 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-14 22:53:46,595 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 22:53:46,596 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 22:53:46,596 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 22:53:46,596 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 22:53:46,596 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 22:53:46,596 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 22:53:46,597 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 22:53:46,597 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 22:53:46,615 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 67 transitions, 149 flow [2020-09-14 22:53:46,618 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-09-14 22:53:46,668 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-09-14 22:53:46,669 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 22:53:46,675 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-14 22:53:46,678 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-09-14 22:53:46,698 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-09-14 22:53:46,698 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 22:53:46,699 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-14 22:53:46,701 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-09-14 22:53:46,702 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 22:53:48,299 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-09-14 22:53:48,449 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1818 [2020-09-14 22:53:48,449 INFO L214 etLargeBlockEncoding]: Total number of compositions: 52 [2020-09-14 22:53:48,455 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-09-14 22:53:48,476 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-09-14 22:53:48,479 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-09-14 22:53:48,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-14 22:53:48,487 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:53:48,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:53:48,488 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:53:48,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:53:48,496 INFO L82 PathProgramCache]: Analyzing trace with hash -540517404, now seen corresponding path program 1 times [2020-09-14 22:53:48,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:53:48,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330965504] [2020-09-14 22:53:48,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:53:48,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:53:48,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:53:48,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330965504] [2020-09-14 22:53:48,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:53:48,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 22:53:48,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700464593] [2020-09-14 22:53:48,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 22:53:48,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:53:48,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 22:53:48,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:53:48,792 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-09-14 22:53:48,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:53:48,844 INFO L93 Difference]: Finished difference Result 220 states and 612 transitions. [2020-09-14 22:53:48,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 22:53:48,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-14 22:53:48,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:53:48,864 INFO L225 Difference]: With dead ends: 220 [2020-09-14 22:53:48,864 INFO L226 Difference]: Without dead ends: 172 [2020-09-14 22:53:48,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:53:48,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-14 22:53:48,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-09-14 22:53:48,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-09-14 22:53:48,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 460 transitions. [2020-09-14 22:53:48,935 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 460 transitions. Word has length 8 [2020-09-14 22:53:48,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:53:48,936 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 460 transitions. [2020-09-14 22:53:48,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 22:53:48,937 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 460 transitions. [2020-09-14 22:53:48,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-14 22:53:48,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:53:48,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:53:48,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-14 22:53:48,939 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:53:48,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:53:48,939 INFO L82 PathProgramCache]: Analyzing trace with hash 533202091, now seen corresponding path program 1 times [2020-09-14 22:53:48,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:53:48,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501335667] [2020-09-14 22:53:48,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:53:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:53:49,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:53:49,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501335667] [2020-09-14 22:53:49,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:53:49,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 22:53:49,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105663023] [2020-09-14 22:53:49,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 22:53:49,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:53:49,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 22:53:49,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:53:49,039 INFO L87 Difference]: Start difference. First operand 172 states and 460 transitions. Second operand 3 states. [2020-09-14 22:53:49,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:53:49,059 INFO L93 Difference]: Finished difference Result 166 states and 438 transitions. [2020-09-14 22:53:49,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 22:53:49,060 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-14 22:53:49,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:53:49,062 INFO L225 Difference]: With dead ends: 166 [2020-09-14 22:53:49,063 INFO L226 Difference]: Without dead ends: 166 [2020-09-14 22:53:49,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:53:49,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-14 22:53:49,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-09-14 22:53:49,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-14 22:53:49,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 438 transitions. [2020-09-14 22:53:49,083 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 438 transitions. Word has length 9 [2020-09-14 22:53:49,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:53:49,083 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 438 transitions. [2020-09-14 22:53:49,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 22:53:49,083 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 438 transitions. [2020-09-14 22:53:49,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-14 22:53:49,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:53:49,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:53:49,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-14 22:53:49,085 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:53:49,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:53:49,086 INFO L82 PathProgramCache]: Analyzing trace with hash -650605017, now seen corresponding path program 1 times [2020-09-14 22:53:49,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:53:49,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778698137] [2020-09-14 22:53:49,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:53:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:53:49,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:53:49,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778698137] [2020-09-14 22:53:49,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:53:49,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 22:53:49,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147930455] [2020-09-14 22:53:49,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 22:53:49,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:53:49,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 22:53:49,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:53:49,193 INFO L87 Difference]: Start difference. First operand 166 states and 438 transitions. Second operand 3 states. [2020-09-14 22:53:49,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:53:49,211 INFO L93 Difference]: Finished difference Result 158 states and 412 transitions. [2020-09-14 22:53:49,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 22:53:49,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-14 22:53:49,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:53:49,218 INFO L225 Difference]: With dead ends: 158 [2020-09-14 22:53:49,218 INFO L226 Difference]: Without dead ends: 158 [2020-09-14 22:53:49,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:53:49,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-14 22:53:49,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-09-14 22:53:49,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-14 22:53:49,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 412 transitions. [2020-09-14 22:53:49,244 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 412 transitions. Word has length 10 [2020-09-14 22:53:49,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:53:49,245 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 412 transitions. [2020-09-14 22:53:49,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 22:53:49,245 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 412 transitions. [2020-09-14 22:53:49,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-14 22:53:49,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:53:49,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:53:49,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-14 22:53:49,247 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:53:49,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:53:49,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1305380691, now seen corresponding path program 1 times [2020-09-14 22:53:49,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:53:49,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283143005] [2020-09-14 22:53:49,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:53:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:53:49,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:53:49,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283143005] [2020-09-14 22:53:49,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:53:49,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:53:49,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899504122] [2020-09-14 22:53:49,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:53:49,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:53:49,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:53:49,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:53:49,337 INFO L87 Difference]: Start difference. First operand 158 states and 412 transitions. Second operand 4 states. [2020-09-14 22:53:49,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:53:49,368 INFO L93 Difference]: Finished difference Result 218 states and 560 transitions. [2020-09-14 22:53:49,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 22:53:49,369 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-14 22:53:49,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:53:49,370 INFO L225 Difference]: With dead ends: 218 [2020-09-14 22:53:49,370 INFO L226 Difference]: Without dead ends: 146 [2020-09-14 22:53:49,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:53:49,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-14 22:53:49,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-14 22:53:49,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-14 22:53:49,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions. [2020-09-14 22:53:49,382 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 11 [2020-09-14 22:53:49,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:53:49,382 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 370 transitions. [2020-09-14 22:53:49,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:53:49,383 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions. [2020-09-14 22:53:49,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-14 22:53:49,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:53:49,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:53:49,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-14 22:53:49,385 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:53:49,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:53:49,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1306080051, now seen corresponding path program 2 times [2020-09-14 22:53:49,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:53:49,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988892271] [2020-09-14 22:53:49,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:53:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:53:49,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:53:49,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988892271] [2020-09-14 22:53:49,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:53:49,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:53:49,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932167497] [2020-09-14 22:53:49,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:53:49,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:53:49,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:53:49,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:53:49,487 INFO L87 Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 4 states. [2020-09-14 22:53:49,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:53:49,530 INFO L93 Difference]: Finished difference Result 167 states and 388 transitions. [2020-09-14 22:53:49,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:53:49,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-14 22:53:49,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:53:49,533 INFO L225 Difference]: With dead ends: 167 [2020-09-14 22:53:49,533 INFO L226 Difference]: Without dead ends: 125 [2020-09-14 22:53:49,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:53:49,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-14 22:53:49,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-09-14 22:53:49,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-14 22:53:49,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 288 transitions. [2020-09-14 22:53:49,549 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 288 transitions. Word has length 11 [2020-09-14 22:53:49,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:53:49,549 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 288 transitions. [2020-09-14 22:53:49,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:53:49,549 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 288 transitions. [2020-09-14 22:53:49,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-14 22:53:49,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:53:49,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:53:49,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-14 22:53:49,553 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:53:49,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:53:49,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1819207960, now seen corresponding path program 1 times [2020-09-14 22:53:49,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:53:49,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49677855] [2020-09-14 22:53:49,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:53:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:53:49,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:53:49,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49677855] [2020-09-14 22:53:49,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:53:49,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:53:49,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009398173] [2020-09-14 22:53:49,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 22:53:49,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:53:49,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 22:53:49,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:53:49,684 INFO L87 Difference]: Start difference. First operand 125 states and 288 transitions. Second operand 5 states. [2020-09-14 22:53:49,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:53:49,733 INFO L93 Difference]: Finished difference Result 121 states and 257 transitions. [2020-09-14 22:53:49,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 22:53:49,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-14 22:53:49,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:53:49,735 INFO L225 Difference]: With dead ends: 121 [2020-09-14 22:53:49,735 INFO L226 Difference]: Without dead ends: 93 [2020-09-14 22:53:49,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-14 22:53:49,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-14 22:53:49,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-09-14 22:53:49,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-14 22:53:49,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 192 transitions. [2020-09-14 22:53:49,740 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 192 transitions. Word has length 12 [2020-09-14 22:53:49,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:53:49,741 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 192 transitions. [2020-09-14 22:53:49,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 22:53:49,741 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 192 transitions. [2020-09-14 22:53:49,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-14 22:53:49,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:53:49,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:53:49,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-14 22:53:49,758 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:53:49,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:53:49,759 INFO L82 PathProgramCache]: Analyzing trace with hash 589619789, now seen corresponding path program 1 times [2020-09-14 22:53:49,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:53:49,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181476581] [2020-09-14 22:53:49,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:53:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:53:49,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:53:49,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181476581] [2020-09-14 22:53:49,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:53:49,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:53:49,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435572659] [2020-09-14 22:53:49,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 22:53:49,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:53:49,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 22:53:49,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:53:49,840 INFO L87 Difference]: Start difference. First operand 93 states and 192 transitions. Second operand 3 states. [2020-09-14 22:53:49,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:53:49,849 INFO L93 Difference]: Finished difference Result 110 states and 218 transitions. [2020-09-14 22:53:49,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 22:53:49,850 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-09-14 22:53:49,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:53:49,851 INFO L225 Difference]: With dead ends: 110 [2020-09-14 22:53:49,851 INFO L226 Difference]: Without dead ends: 88 [2020-09-14 22:53:49,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:53:49,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-14 22:53:49,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-09-14 22:53:49,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-14 22:53:49,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 169 transitions. [2020-09-14 22:53:49,858 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 169 transitions. Word has length 13 [2020-09-14 22:53:49,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:53:49,858 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 169 transitions. [2020-09-14 22:53:49,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 22:53:49,859 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 169 transitions. [2020-09-14 22:53:49,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-14 22:53:49,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:53:49,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:53:49,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-14 22:53:49,861 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:53:49,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:53:49,867 INFO L82 PathProgramCache]: Analyzing trace with hash 205369494, now seen corresponding path program 1 times [2020-09-14 22:53:49,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:53:49,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243591208] [2020-09-14 22:53:49,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:53:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:53:49,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:53:49,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243591208] [2020-09-14 22:53:49,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:53:49,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:53:49,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469490891] [2020-09-14 22:53:49,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 22:53:49,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:53:49,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 22:53:49,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:53:49,913 INFO L87 Difference]: Start difference. First operand 86 states and 169 transitions. Second operand 3 states. [2020-09-14 22:53:49,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:53:49,924 INFO L93 Difference]: Finished difference Result 104 states and 195 transitions. [2020-09-14 22:53:49,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 22:53:49,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-09-14 22:53:49,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:53:49,925 INFO L225 Difference]: With dead ends: 104 [2020-09-14 22:53:49,925 INFO L226 Difference]: Without dead ends: 66 [2020-09-14 22:53:49,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:53:49,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-14 22:53:49,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-09-14 22:53:49,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-14 22:53:49,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 111 transitions. [2020-09-14 22:53:49,928 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 111 transitions. Word has length 14 [2020-09-14 22:53:49,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:53:49,929 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 111 transitions. [2020-09-14 22:53:49,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 22:53:49,929 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 111 transitions. [2020-09-14 22:53:49,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-14 22:53:49,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:53:49,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:53:49,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-14 22:53:49,930 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:53:49,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:53:49,931 INFO L82 PathProgramCache]: Analyzing trace with hash -610616562, now seen corresponding path program 2 times [2020-09-14 22:53:49,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:53:49,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474078013] [2020-09-14 22:53:49,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:53:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:53:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:53:49,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474078013] [2020-09-14 22:53:49,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:53:49,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:53:49,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496469279] [2020-09-14 22:53:49,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:53:49,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:53:49,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:53:49,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:53:49,983 INFO L87 Difference]: Start difference. First operand 65 states and 111 transitions. Second operand 4 states. [2020-09-14 22:53:50,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:53:50,001 INFO L93 Difference]: Finished difference Result 71 states and 116 transitions. [2020-09-14 22:53:50,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:53:50,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-14 22:53:50,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:53:50,002 INFO L225 Difference]: With dead ends: 71 [2020-09-14 22:53:50,002 INFO L226 Difference]: Without dead ends: 64 [2020-09-14 22:53:50,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:53:50,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-14 22:53:50,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-09-14 22:53:50,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-14 22:53:50,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 106 transitions. [2020-09-14 22:53:50,005 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 106 transitions. Word has length 14 [2020-09-14 22:53:50,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:53:50,006 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 106 transitions. [2020-09-14 22:53:50,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:53:50,006 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 106 transitions. [2020-09-14 22:53:50,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-14 22:53:50,007 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:53:50,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:53:50,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-14 22:53:50,007 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:53:50,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:53:50,007 INFO L82 PathProgramCache]: Analyzing trace with hash -375565572, now seen corresponding path program 3 times [2020-09-14 22:53:50,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:53:50,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666113366] [2020-09-14 22:53:50,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:53:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:53:50,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:53:50,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666113366] [2020-09-14 22:53:50,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:53:50,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 22:53:50,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159717599] [2020-09-14 22:53:50,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 22:53:50,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:53:50,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 22:53:50,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-14 22:53:50,097 INFO L87 Difference]: Start difference. First operand 63 states and 106 transitions. Second operand 6 states. [2020-09-14 22:53:50,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:53:50,127 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-09-14 22:53:50,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 22:53:50,127 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-14 22:53:50,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:53:50,128 INFO L225 Difference]: With dead ends: 58 [2020-09-14 22:53:50,128 INFO L226 Difference]: Without dead ends: 0 [2020-09-14 22:53:50,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-14 22:53:50,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-14 22:53:50,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-14 22:53:50,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-14 22:53:50,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-14 22:53:50,129 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-09-14 22:53:50,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:53:50,130 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-14 22:53:50,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 22:53:50,130 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-14 22:53:50,130 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-14 22:53:50,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-14 22:53:50,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 10:53:50 BasicIcfg [2020-09-14 22:53:50,135 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-14 22:53:50,137 INFO L168 Benchmark]: Toolchain (without parser) took 5035.43 ms. Allocated memory was 137.9 MB in the beginning and 252.2 MB in the end (delta: 114.3 MB). Free memory was 99.6 MB in the beginning and 174.1 MB in the end (delta: -74.5 MB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB. [2020-09-14 22:53:50,138 INFO L168 Benchmark]: CDTParser took 1.39 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-14 22:53:50,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 765.68 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 99.0 MB in the beginning and 159.1 MB in the end (delta: -60.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-09-14 22:53:50,139 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.78 ms. Allocated memory is still 201.3 MB. Free memory was 159.1 MB in the beginning and 156.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-09-14 22:53:50,140 INFO L168 Benchmark]: Boogie Preprocessor took 29.73 ms. Allocated memory is still 201.3 MB. Free memory was 156.9 MB in the beginning and 155.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-14 22:53:50,141 INFO L168 Benchmark]: RCFGBuilder took 493.04 ms. Allocated memory is still 201.3 MB. Free memory was 155.5 MB in the beginning and 133.3 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-09-14 22:53:50,142 INFO L168 Benchmark]: TraceAbstraction took 3676.72 ms. Allocated memory was 201.3 MB in the beginning and 252.2 MB in the end (delta: 50.9 MB). Free memory was 133.3 MB in the beginning and 174.1 MB in the end (delta: -40.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-14 22:53:50,146 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.39 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 765.68 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 99.0 MB in the beginning and 159.1 MB in the end (delta: -60.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.78 ms. Allocated memory is still 201.3 MB. Free memory was 159.1 MB in the beginning and 156.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.73 ms. Allocated memory is still 201.3 MB. Free memory was 156.9 MB in the beginning and 155.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 493.04 ms. Allocated memory is still 201.3 MB. Free memory was 155.5 MB in the beginning and 133.3 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3676.72 ms. Allocated memory was 201.3 MB in the beginning and 252.2 MB in the end (delta: 50.9 MB). Free memory was 133.3 MB in the beginning and 174.1 MB in the end (delta: -40.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 75 ProgramPointsBefore, 30 ProgramPointsAfterwards, 67 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 621 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 16 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 1818 CheckedPairsTotal, 52 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 179 SDtfs, 120 SDslu, 194 SDs, 0 SdLazy, 99 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s 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: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3056 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...