/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/safe020_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-14 23:03:28,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-14 23:03:28,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-14 23:03:28,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-14 23:03:28,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-14 23:03:28,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-14 23:03:28,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-14 23:03:28,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-14 23:03:28,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-14 23:03:28,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-14 23:03:28,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-14 23:03:28,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-14 23:03:28,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-14 23:03:28,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-14 23:03:28,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-14 23:03:28,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-14 23:03:28,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-14 23:03:28,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-14 23:03:28,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-14 23:03:28,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-14 23:03:28,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-14 23:03:28,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-14 23:03:28,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-14 23:03:28,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-14 23:03:28,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-14 23:03:28,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-14 23:03:28,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-14 23:03:28,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-14 23:03:28,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-14 23:03:28,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-14 23:03:28,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-14 23:03:28,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-14 23:03:28,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-14 23:03:28,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-14 23:03:28,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-14 23:03:28,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-14 23:03:28,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-14 23:03:28,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-14 23:03:28,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-14 23:03:28,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-14 23:03:28,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-14 23:03:28,651 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 23:03:28,677 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-14 23:03:28,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-14 23:03:28,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-14 23:03:28,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-14 23:03:28,679 INFO L138 SettingsManager]: * Use SBE=true [2020-09-14 23:03:28,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-14 23:03:28,680 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-14 23:03:28,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-14 23:03:28,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-14 23:03:28,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-14 23:03:28,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-14 23:03:28,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-14 23:03:28,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-14 23:03:28,681 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-14 23:03:28,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-14 23:03:28,682 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-14 23:03:28,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-14 23:03:28,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-14 23:03:28,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-14 23:03:28,683 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-14 23:03:28,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-14 23:03:28,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 23:03:28,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-14 23:03:28,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-14 23:03:28,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-14 23:03:28,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-14 23:03:28,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-14 23:03:28,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-14 23:03:28,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-14 23:03:28,685 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-14 23:03:29,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-14 23:03:29,125 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-14 23:03:29,132 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-14 23:03:29,134 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-14 23:03:29,134 INFO L275 PluginConnector]: CDTParser initialized [2020-09-14 23:03:29,136 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2020-09-14 23:03:29,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07b1c9fb7/a9bc60c6b25a4e57b667e5a8c64dfe20/FLAG6fda135f1 [2020-09-14 23:03:29,909 INFO L306 CDTParser]: Found 1 translation units. [2020-09-14 23:03:29,910 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2020-09-14 23:03:29,933 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07b1c9fb7/a9bc60c6b25a4e57b667e5a8c64dfe20/FLAG6fda135f1 [2020-09-14 23:03:30,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07b1c9fb7/a9bc60c6b25a4e57b667e5a8c64dfe20 [2020-09-14 23:03:30,153 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-14 23:03:30,159 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-14 23:03:30,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-14 23:03:30,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-14 23:03:30,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-14 23:03:30,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 11:03:30" (1/1) ... [2020-09-14 23:03:30,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ceedc44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:03:30, skipping insertion in model container [2020-09-14 23:03:30,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 11:03:30" (1/1) ... [2020-09-14 23:03:30,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-14 23:03:30,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-14 23:03:30,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 23:03:30,817 INFO L203 MainTranslator]: Completed pre-run [2020-09-14 23:03:30,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 23:03:31,005 INFO L208 MainTranslator]: Completed translation [2020-09-14 23:03:31,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:03:31 WrapperNode [2020-09-14 23:03:31,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-14 23:03:31,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-14 23:03:31,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-14 23:03:31,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-14 23:03:31,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:03:31" (1/1) ... [2020-09-14 23:03:31,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:03:31" (1/1) ... [2020-09-14 23:03:31,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-14 23:03:31,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-14 23:03:31,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-14 23:03:31,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-14 23:03:31,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:03:31" (1/1) ... [2020-09-14 23:03:31,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:03:31" (1/1) ... [2020-09-14 23:03:31,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:03:31" (1/1) ... [2020-09-14 23:03:31,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:03:31" (1/1) ... [2020-09-14 23:03:31,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:03:31" (1/1) ... [2020-09-14 23:03:31,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:03:31" (1/1) ... [2020-09-14 23:03:31,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:03:31" (1/1) ... [2020-09-14 23:03:31,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-14 23:03:31,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-14 23:03:31,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-14 23:03:31,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-14 23:03:31,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:03:31" (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 23:03:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-14 23:03:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-14 23:03:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-14 23:03:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-14 23:03:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-14 23:03:31,190 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-14 23:03:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-14 23:03:31,190 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-14 23:03:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-14 23:03:31,191 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-14 23:03:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-14 23:03:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-14 23:03:31,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-14 23:03:31,193 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 23:03:31,621 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-14 23:03:31,621 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-14 23:03:31,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 11:03:31 BoogieIcfgContainer [2020-09-14 23:03:31,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-14 23:03:31,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-14 23:03:31,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-14 23:03:31,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-14 23:03:31,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 11:03:30" (1/3) ... [2020-09-14 23:03:31,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2e1be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 11:03:31, skipping insertion in model container [2020-09-14 23:03:31,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:03:31" (2/3) ... [2020-09-14 23:03:31,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2e1be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 11:03:31, skipping insertion in model container [2020-09-14 23:03:31,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 11:03:31" (3/3) ... [2020-09-14 23:03:31,642 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_tso.oepc.i [2020-09-14 23:03:31,653 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-14 23:03:31,653 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-14 23:03:31,663 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-14 23:03:31,664 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-14 23:03:31,693 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,693 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,693 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,694 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,694 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,694 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,695 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,695 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,695 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,696 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,697 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,697 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,697 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,698 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,698 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,698 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,703 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,703 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,704 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,704 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,716 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,716 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,717 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,717 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,721 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,722 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,722 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,722 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:03:31,747 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-14 23:03:31,770 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 23:03:31,770 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 23:03:31,770 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 23:03:31,770 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 23:03:31,771 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 23:03:31,771 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 23:03:31,771 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 23:03:31,771 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 23:03:31,788 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-09-14 23:03:31,790 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-14 23:03:31,840 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-14 23:03:31,841 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 23:03:31,848 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-14 23:03:31,851 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-14 23:03:31,872 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-14 23:03:31,873 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 23:03:31,873 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-14 23:03:31,876 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-09-14 23:03:31,877 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 23:03:33,600 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2244 [2020-09-14 23:03:33,601 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-09-14 23:03:33,606 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-14 23:03:33,633 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-09-14 23:03:33,636 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-09-14 23:03:33,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-14 23:03:33,646 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:03:33,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:03:33,648 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:03:33,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:03:33,656 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-09-14 23:03:33,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:03:33,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916526789] [2020-09-14 23:03:33,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:03:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:03:33,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 23:03:33,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916526789] [2020-09-14 23:03:33,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:03:33,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 23:03:33,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204111811] [2020-09-14 23:03:33,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-14 23:03:33,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:03:33,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-14 23:03:33,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-14 23:03:33,935 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-09-14 23:03:33,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:03:33,970 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-09-14 23:03:33,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-14 23:03:33,972 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-14 23:03:33,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:03:33,992 INFO L225 Difference]: With dead ends: 274 [2020-09-14 23:03:33,992 INFO L226 Difference]: Without dead ends: 226 [2020-09-14 23:03:33,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-14 23:03:34,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-14 23:03:34,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-14 23:03:34,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-14 23:03:34,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-09-14 23:03:34,075 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-09-14 23:03:34,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:03:34,077 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-09-14 23:03:34,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-14 23:03:34,077 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-09-14 23:03:34,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-14 23:03:34,079 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:03:34,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:03:34,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-14 23:03:34,080 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:03:34,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:03:34,080 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-09-14 23:03:34,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:03:34,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667599462] [2020-09-14 23:03:34,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:03:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:03:34,228 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 23:03:34,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667599462] [2020-09-14 23:03:34,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:03:34,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 23:03:34,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52343175] [2020-09-14 23:03:34,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 23:03:34,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:03:34,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 23:03:34,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 23:03:34,234 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-09-14 23:03:34,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:03:34,282 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-09-14 23:03:34,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 23:03:34,285 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-14 23:03:34,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:03:34,288 INFO L225 Difference]: With dead ends: 250 [2020-09-14 23:03:34,288 INFO L226 Difference]: Without dead ends: 202 [2020-09-14 23:03:34,290 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 23:03:34,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-14 23:03:34,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-14 23:03:34,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-14 23:03:34,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-09-14 23:03:34,329 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-09-14 23:03:34,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:03:34,329 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-09-14 23:03:34,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 23:03:34,329 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-09-14 23:03:34,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-14 23:03:34,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:03:34,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:03:34,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-14 23:03:34,332 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:03:34,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:03:34,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1465143248, now seen corresponding path program 1 times [2020-09-14 23:03:34,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:03:34,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367371918] [2020-09-14 23:03:34,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:03:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:03:34,476 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 23:03:34,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367371918] [2020-09-14 23:03:34,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:03:34,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 23:03:34,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792984063] [2020-09-14 23:03:34,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 23:03:34,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:03:34,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 23:03:34,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-14 23:03:34,480 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 5 states. [2020-09-14 23:03:34,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:03:34,557 INFO L93 Difference]: Finished difference Result 262 states and 697 transitions. [2020-09-14 23:03:34,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 23:03:34,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-14 23:03:34,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:03:34,560 INFO L225 Difference]: With dead ends: 262 [2020-09-14 23:03:34,560 INFO L226 Difference]: Without dead ends: 154 [2020-09-14 23:03:34,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-14 23:03:34,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-14 23:03:34,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-09-14 23:03:34,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-14 23:03:34,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 392 transitions. [2020-09-14 23:03:34,571 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 392 transitions. Word has length 10 [2020-09-14 23:03:34,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:03:34,571 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 392 transitions. [2020-09-14 23:03:34,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 23:03:34,572 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 392 transitions. [2020-09-14 23:03:34,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-14 23:03:34,573 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:03:34,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:03:34,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-14 23:03:34,573 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:03:34,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:03:34,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1312152701, now seen corresponding path program 1 times [2020-09-14 23:03:34,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:03:34,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810470880] [2020-09-14 23:03:34,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:03:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:03:34,646 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 23:03:34,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810470880] [2020-09-14 23:03:34,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:03:34,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 23:03:34,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062392299] [2020-09-14 23:03:34,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 23:03:34,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:03:34,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 23:03:34,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 23:03:34,649 INFO L87 Difference]: Start difference. First operand 154 states and 392 transitions. Second operand 4 states. [2020-09-14 23:03:34,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:03:34,675 INFO L93 Difference]: Finished difference Result 174 states and 426 transitions. [2020-09-14 23:03:34,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 23:03:34,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-14 23:03:34,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:03:34,678 INFO L225 Difference]: With dead ends: 174 [2020-09-14 23:03:34,678 INFO L226 Difference]: Without dead ends: 150 [2020-09-14 23:03:34,678 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 23:03:34,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-14 23:03:34,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-09-14 23:03:34,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-09-14 23:03:34,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-09-14 23:03:34,687 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-09-14 23:03:34,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:03:34,687 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-09-14 23:03:34,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 23:03:34,687 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-09-14 23:03:34,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-14 23:03:34,688 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:03:34,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:03:34,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-14 23:03:34,689 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:03:34,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:03:34,690 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-09-14 23:03:34,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:03:34,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283696414] [2020-09-14 23:03:34,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:03:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:03:34,769 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 23:03:34,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283696414] [2020-09-14 23:03:34,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:03:34,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 23:03:34,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32277483] [2020-09-14 23:03:34,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 23:03:34,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:03:34,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 23:03:34,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 23:03:34,772 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 4 states. [2020-09-14 23:03:34,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:03:34,805 INFO L93 Difference]: Finished difference Result 164 states and 376 transitions. [2020-09-14 23:03:34,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 23:03:34,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-14 23:03:34,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:03:34,807 INFO L225 Difference]: With dead ends: 164 [2020-09-14 23:03:34,807 INFO L226 Difference]: Without dead ends: 128 [2020-09-14 23:03:34,808 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 23:03:34,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-14 23:03:34,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-09-14 23:03:34,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-14 23:03:34,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 293 transitions. [2020-09-14 23:03:34,814 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 293 transitions. Word has length 12 [2020-09-14 23:03:34,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:03:34,814 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 293 transitions. [2020-09-14 23:03:34,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 23:03:34,814 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 293 transitions. [2020-09-14 23:03:34,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-14 23:03:34,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:03:34,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:03:34,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-14 23:03:34,816 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:03:34,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:03:34,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1292455845, now seen corresponding path program 1 times [2020-09-14 23:03:34,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:03:34,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133508743] [2020-09-14 23:03:34,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:03:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:03:34,915 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 23:03:34,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133508743] [2020-09-14 23:03:34,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:03:34,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 23:03:34,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347505884] [2020-09-14 23:03:34,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 23:03:34,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:03:34,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 23:03:34,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 23:03:34,918 INFO L87 Difference]: Start difference. First operand 128 states and 293 transitions. Second operand 5 states. [2020-09-14 23:03:34,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:03:34,979 INFO L93 Difference]: Finished difference Result 116 states and 240 transitions. [2020-09-14 23:03:34,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 23:03:34,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-14 23:03:34,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:03:34,981 INFO L225 Difference]: With dead ends: 116 [2020-09-14 23:03:34,981 INFO L226 Difference]: Without dead ends: 92 [2020-09-14 23:03:34,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 23:03:34,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-14 23:03:34,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-09-14 23:03:34,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-14 23:03:34,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-09-14 23:03:34,985 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 13 [2020-09-14 23:03:34,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:03:34,986 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-09-14 23:03:34,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 23:03:34,986 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-09-14 23:03:34,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-14 23:03:34,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:03:34,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:03:34,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-14 23:03:34,988 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:03:34,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:03:34,988 INFO L82 PathProgramCache]: Analyzing trace with hash -228576461, now seen corresponding path program 1 times [2020-09-14 23:03:34,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:03:34,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529921969] [2020-09-14 23:03:34,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:03:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:03:35,064 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 23:03:35,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529921969] [2020-09-14 23:03:35,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:03:35,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 23:03:35,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537959599] [2020-09-14 23:03:35,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 23:03:35,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:03:35,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 23:03:35,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 23:03:35,066 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 4 states. [2020-09-14 23:03:35,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:03:35,093 INFO L93 Difference]: Finished difference Result 120 states and 228 transitions. [2020-09-14 23:03:35,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 23:03:35,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-14 23:03:35,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:03:35,094 INFO L225 Difference]: With dead ends: 120 [2020-09-14 23:03:35,094 INFO L226 Difference]: Without dead ends: 94 [2020-09-14 23:03:35,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 23:03:35,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-14 23:03:35,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-09-14 23:03:35,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-14 23:03:35,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 175 transitions. [2020-09-14 23:03:35,099 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 175 transitions. Word has length 14 [2020-09-14 23:03:35,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:03:35,099 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 175 transitions. [2020-09-14 23:03:35,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 23:03:35,099 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 175 transitions. [2020-09-14 23:03:35,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-14 23:03:35,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:03:35,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:03:35,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-14 23:03:35,101 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:03:35,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:03:35,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1357686433, now seen corresponding path program 1 times [2020-09-14 23:03:35,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:03:35,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953635700] [2020-09-14 23:03:35,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:03:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:03:35,172 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 23:03:35,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953635700] [2020-09-14 23:03:35,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:03:35,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 23:03:35,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240105787] [2020-09-14 23:03:35,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 23:03:35,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:03:35,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 23:03:35,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-14 23:03:35,175 INFO L87 Difference]: Start difference. First operand 90 states and 175 transitions. Second operand 5 states. [2020-09-14 23:03:35,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:03:35,221 INFO L93 Difference]: Finished difference Result 113 states and 209 transitions. [2020-09-14 23:03:35,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 23:03:35,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-14 23:03:35,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:03:35,223 INFO L225 Difference]: With dead ends: 113 [2020-09-14 23:03:35,223 INFO L226 Difference]: Without dead ends: 70 [2020-09-14 23:03:35,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-14 23:03:35,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-14 23:03:35,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-09-14 23:03:35,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-14 23:03:35,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 115 transitions. [2020-09-14 23:03:35,226 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 115 transitions. Word has length 15 [2020-09-14 23:03:35,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:03:35,226 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 115 transitions. [2020-09-14 23:03:35,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 23:03:35,227 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 115 transitions. [2020-09-14 23:03:35,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-14 23:03:35,230 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:03:35,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:03:35,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-14 23:03:35,231 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:03:35,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:03:35,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1504039886, now seen corresponding path program 1 times [2020-09-14 23:03:35,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:03:35,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351776194] [2020-09-14 23:03:35,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:03:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:03:35,356 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 23:03:35,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351776194] [2020-09-14 23:03:35,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:03:35,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-14 23:03:35,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163954035] [2020-09-14 23:03:35,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 23:03:35,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:03:35,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 23:03:35,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-14 23:03:35,359 INFO L87 Difference]: Start difference. First operand 68 states and 115 transitions. Second operand 6 states. [2020-09-14 23:03:35,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:03:35,396 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-09-14 23:03:35,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 23:03:35,396 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-14 23:03:35,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:03:35,397 INFO L225 Difference]: With dead ends: 58 [2020-09-14 23:03:35,397 INFO L226 Difference]: Without dead ends: 0 [2020-09-14 23:03:35,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 23:03:35,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-14 23:03:35,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-14 23:03:35,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-14 23:03:35,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-14 23:03:35,399 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-09-14 23:03:35,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:03:35,399 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-14 23:03:35,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 23:03:35,399 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-14 23:03:35,400 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-14 23:03:35,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-14 23:03:35,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 11:03:35 BasicIcfg [2020-09-14 23:03:35,406 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-14 23:03:35,410 INFO L168 Benchmark]: Toolchain (without parser) took 5253.64 ms. Allocated memory was 139.5 MB in the beginning and 245.9 MB in the end (delta: 106.4 MB). Free memory was 101.2 MB in the beginning and 164.5 MB in the end (delta: -63.3 MB). Peak memory consumption was 43.1 MB. Max. memory is 7.1 GB. [2020-09-14 23:03:35,411 INFO L168 Benchmark]: CDTParser took 1.62 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-14 23:03:35,412 INFO L168 Benchmark]: CACSL2BoogieTranslator took 846.51 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 100.6 MB in the beginning and 162.6 MB in the end (delta: -62.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-09-14 23:03:35,412 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.05 ms. Allocated memory is still 204.5 MB. Free memory was 162.6 MB in the beginning and 160.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-14 23:03:35,413 INFO L168 Benchmark]: Boogie Preprocessor took 42.37 ms. Allocated memory is still 204.5 MB. Free memory was 160.5 MB in the beginning and 158.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-14 23:03:35,414 INFO L168 Benchmark]: RCFGBuilder took 514.60 ms. Allocated memory is still 204.5 MB. Free memory was 158.6 MB in the beginning and 136.9 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-09-14 23:03:35,415 INFO L168 Benchmark]: TraceAbstraction took 3777.87 ms. Allocated memory was 204.5 MB in the beginning and 245.9 MB in the end (delta: 41.4 MB). Free memory was 136.3 MB in the beginning and 164.5 MB in the end (delta: -28.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-09-14 23:03:35,419 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.62 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 846.51 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 100.6 MB in the beginning and 162.6 MB in the end (delta: -62.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 62.05 ms. Allocated memory is still 204.5 MB. Free memory was 162.6 MB in the beginning and 160.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.37 ms. Allocated memory is still 204.5 MB. Free memory was 160.5 MB in the beginning and 158.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 514.60 ms. Allocated memory is still 204.5 MB. Free memory was 158.6 MB in the beginning and 136.9 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3777.87 ms. Allocated memory was 204.5 MB in the beginning and 245.9 MB in the end (delta: 41.4 MB). Free memory was 136.3 MB in the beginning and 164.5 MB in the end (delta: -28.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 76 ProgramPointsBefore, 31 ProgramPointsAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 609 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2244 CheckedPairsTotal, 56 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 188 SDtfs, 171 SDslu, 276 SDs, 0 SdLazy, 115 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3192 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...