/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/safe025_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-17 00:44:23,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-17 00:44:23,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-17 00:44:23,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-17 00:44:23,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-17 00:44:23,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-17 00:44:23,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-17 00:44:23,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-17 00:44:23,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-17 00:44:23,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-17 00:44:23,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-17 00:44:23,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-17 00:44:23,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-17 00:44:23,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-17 00:44:23,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-17 00:44:23,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-17 00:44:23,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-17 00:44:23,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-17 00:44:23,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-17 00:44:23,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-17 00:44:23,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-17 00:44:23,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-17 00:44:23,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-17 00:44:23,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-17 00:44:23,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-17 00:44:23,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-17 00:44:23,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-17 00:44:23,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-17 00:44:23,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-17 00:44:23,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-17 00:44:23,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-17 00:44:23,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-17 00:44:23,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-17 00:44:23,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-17 00:44:23,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-17 00:44:23,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-17 00:44:23,643 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-17 00:44:23,669 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-17 00:44:23,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-17 00:44:23,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-17 00:44:23,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-17 00:44:23,671 INFO L138 SettingsManager]: * Use SBE=true [2020-09-17 00:44:23,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-17 00:44:23,672 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-17 00:44:23,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-17 00:44:23,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-17 00:44:23,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-17 00:44:23,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-17 00:44:23,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-17 00:44:23,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-17 00:44:23,673 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-17 00:44:23,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-17 00:44:23,674 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-17 00:44:23,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-17 00:44:23,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-17 00:44:23,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-17 00:44:23,674 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-17 00:44:23,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-17 00:44:23,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 00:44:23,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-17 00:44:23,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-17 00:44:23,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-17 00:44:23,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-17 00:44:23,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-17 00:44:23,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-17 00:44:23,676 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-17 00:44:23,676 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-17 00:44:24,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-17 00:44:24,173 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-17 00:44:24,185 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-17 00:44:24,186 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-17 00:44:24,187 INFO L275 PluginConnector]: CDTParser initialized [2020-09-17 00:44:24,188 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-09-17 00:44:24,273 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24372d769/72d2853149414f1e8efd68e34e6edfb4/FLAG3ab261ad6 [2020-09-17 00:44:24,928 INFO L306 CDTParser]: Found 1 translation units. [2020-09-17 00:44:24,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-09-17 00:44:24,946 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24372d769/72d2853149414f1e8efd68e34e6edfb4/FLAG3ab261ad6 [2020-09-17 00:44:25,121 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24372d769/72d2853149414f1e8efd68e34e6edfb4 [2020-09-17 00:44:25,134 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-17 00:44:25,139 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-17 00:44:25,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-17 00:44:25,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-17 00:44:25,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-17 00:44:25,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 12:44:25" (1/1) ... [2020-09-17 00:44:25,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2146f7c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:44:25, skipping insertion in model container [2020-09-17 00:44:25,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 12:44:25" (1/1) ... [2020-09-17 00:44:25,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-17 00:44:25,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-17 00:44:25,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 00:44:25,812 INFO L203 MainTranslator]: Completed pre-run [2020-09-17 00:44:25,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 00:44:25,986 INFO L208 MainTranslator]: Completed translation [2020-09-17 00:44:25,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:44:25 WrapperNode [2020-09-17 00:44:25,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-17 00:44:25,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-17 00:44:25,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-17 00:44:25,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-17 00:44:26,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:44:25" (1/1) ... [2020-09-17 00:44:26,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:44:25" (1/1) ... [2020-09-17 00:44:26,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-17 00:44:26,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-17 00:44:26,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-17 00:44:26,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-17 00:44:26,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:44:25" (1/1) ... [2020-09-17 00:44:26,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:44:25" (1/1) ... [2020-09-17 00:44:26,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:44:25" (1/1) ... [2020-09-17 00:44:26,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:44:25" (1/1) ... [2020-09-17 00:44:26,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:44:25" (1/1) ... [2020-09-17 00:44:26,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:44:25" (1/1) ... [2020-09-17 00:44:26,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:44:25" (1/1) ... [2020-09-17 00:44:26,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-17 00:44:26,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-17 00:44:26,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-17 00:44:26,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-17 00:44:26,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:44:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 00:44:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-17 00:44:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-17 00:44:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-17 00:44:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-17 00:44:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-17 00:44:26,167 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-17 00:44:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-17 00:44:26,167 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-17 00:44:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-17 00:44:26,167 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-17 00:44:26,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-17 00:44:26,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-17 00:44:26,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-17 00:44:26,171 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-17 00:44:26,583 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-17 00:44:26,583 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-17 00:44:26,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 12:44:26 BoogieIcfgContainer [2020-09-17 00:44:26,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-17 00:44:26,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-17 00:44:26,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-17 00:44:26,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-17 00:44:26,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 12:44:25" (1/3) ... [2020-09-17 00:44:26,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708eefde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 12:44:26, skipping insertion in model container [2020-09-17 00:44:26,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:44:25" (2/3) ... [2020-09-17 00:44:26,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708eefde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 12:44:26, skipping insertion in model container [2020-09-17 00:44:26,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 12:44:26" (3/3) ... [2020-09-17 00:44:26,599 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_tso.oepc.i [2020-09-17 00:44:26,611 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-17 00:44:26,611 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-17 00:44:26,622 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-17 00:44:26,623 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-17 00:44:26,653 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,653 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,653 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,654 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,654 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,654 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,655 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,655 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,655 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,656 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,656 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,656 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,657 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,657 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,658 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,658 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,658 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,658 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,663 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,664 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,664 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,673 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,673 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,673 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,674 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,677 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,678 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,678 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,678 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:44:26,704 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-17 00:44:26,729 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 00:44:26,729 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 00:44:26,730 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 00:44:26,730 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 00:44:26,730 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 00:44:26,730 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 00:44:26,730 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 00:44:26,731 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 00:44:26,750 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-17 00:44:26,753 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-17 00:44:26,806 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-17 00:44:26,807 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 00:44:26,813 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-17 00:44:26,816 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-17 00:44:26,838 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-17 00:44:26,838 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 00:44:26,839 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-17 00:44:26,841 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-17 00:44:26,842 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 00:44:28,764 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-17 00:44:28,830 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-09-17 00:44:28,830 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-09-17 00:44:28,835 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-17 00:44:28,864 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-17 00:44:28,866 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-17 00:44:28,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-17 00:44:28,876 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:44:28,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:44:28,878 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:44:28,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:44:28,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-09-17 00:44:28,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:44:28,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185421857] [2020-09-17 00:44:28,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:44:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:44:29,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:44:29,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185421857] [2020-09-17 00:44:29,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:44:29,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 00:44:29,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993997431] [2020-09-17 00:44:29,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 00:44:29,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:44:29,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 00:44:29,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 00:44:29,200 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-17 00:44:29,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:44:29,270 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-17 00:44:29,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 00:44:29,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-17 00:44:29,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:44:29,292 INFO L225 Difference]: With dead ends: 282 [2020-09-17 00:44:29,292 INFO L226 Difference]: Without dead ends: 218 [2020-09-17 00:44:29,294 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 [2020-09-17 00:44:29,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-17 00:44:29,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-17 00:44:29,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-17 00:44:29,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-17 00:44:29,376 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-17 00:44:29,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:44:29,378 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-17 00:44:29,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 00:44:29,378 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-17 00:44:29,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 00:44:29,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:44:29,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:44:29,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-17 00:44:29,380 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:44:29,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:44:29,381 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-09-17 00:44:29,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:44:29,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784135967] [2020-09-17 00:44:29,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:44:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:44:29,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:44:29,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784135967] [2020-09-17 00:44:29,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:44:29,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:44:29,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314024153] [2020-09-17 00:44:29,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 00:44:29,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:44:29,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 00:44:29,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 00:44:29,460 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-09-17 00:44:29,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:44:29,483 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-09-17 00:44:29,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 00:44:29,484 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-17 00:44:29,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:44:29,487 INFO L225 Difference]: With dead ends: 202 [2020-09-17 00:44:29,487 INFO L226 Difference]: Without dead ends: 202 [2020-09-17 00:44:29,488 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 [2020-09-17 00:44:29,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-17 00:44:29,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-17 00:44:29,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-17 00:44:29,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-17 00:44:29,514 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-09-17 00:44:29,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:44:29,514 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-17 00:44:29,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 00:44:29,515 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-17 00:44:29,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-17 00:44:29,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:44:29,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:44:29,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-17 00:44:29,517 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:44:29,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:44:29,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1603398907, now seen corresponding path program 1 times [2020-09-17 00:44:29,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:44:29,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065344999] [2020-09-17 00:44:29,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:44:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:44:29,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:44:29,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065344999] [2020-09-17 00:44:29,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:44:29,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 00:44:29,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748888819] [2020-09-17 00:44:29,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 00:44:29,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:44:29,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 00:44:29,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 00:44:29,588 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-09-17 00:44:29,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:44:29,598 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-09-17 00:44:29,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 00:44:29,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-17 00:44:29,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:44:29,601 INFO L225 Difference]: With dead ends: 194 [2020-09-17 00:44:29,601 INFO L226 Difference]: Without dead ends: 194 [2020-09-17 00:44:29,602 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 [2020-09-17 00:44:29,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-17 00:44:29,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-09-17 00:44:29,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-17 00:44:29,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-09-17 00:44:29,616 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-09-17 00:44:29,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:44:29,616 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-09-17 00:44:29,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 00:44:29,617 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-09-17 00:44:29,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-17 00:44:29,618 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:44:29,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:44:29,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-17 00:44:29,619 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:44:29,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:44:29,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-09-17 00:44:29,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:44:29,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478017457] [2020-09-17 00:44:29,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:44:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:44:29,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:44:29,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478017457] [2020-09-17 00:44:29,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:44:29,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:44:29,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104568886] [2020-09-17 00:44:29,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:44:29,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:44:29,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:44:29,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:44:29,702 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-09-17 00:44:29,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:44:29,737 INFO L93 Difference]: Finished difference Result 225 states and 557 transitions. [2020-09-17 00:44:29,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:44:29,739 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-17 00:44:29,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:44:29,741 INFO L225 Difference]: With dead ends: 225 [2020-09-17 00:44:29,741 INFO L226 Difference]: Without dead ends: 161 [2020-09-17 00:44:29,741 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 [2020-09-17 00:44:29,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-09-17 00:44:29,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-09-17 00:44:29,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-09-17 00:44:29,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 386 transitions. [2020-09-17 00:44:29,751 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 386 transitions. Word has length 11 [2020-09-17 00:44:29,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:44:29,751 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 386 transitions. [2020-09-17 00:44:29,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:44:29,752 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 386 transitions. [2020-09-17 00:44:29,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-17 00:44:29,753 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:44:29,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:44:29,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-17 00:44:29,753 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:44:29,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:44:29,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1941611660, now seen corresponding path program 1 times [2020-09-17 00:44:29,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:44:29,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002034043] [2020-09-17 00:44:29,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:44:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:44:29,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:44:29,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002034043] [2020-09-17 00:44:29,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:44:29,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:44:29,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530311805] [2020-09-17 00:44:29,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 00:44:29,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:44:29,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 00:44:29,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:44:29,865 INFO L87 Difference]: Start difference. First operand 161 states and 386 transitions. Second operand 5 states. [2020-09-17 00:44:29,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:44:29,926 INFO L93 Difference]: Finished difference Result 160 states and 362 transitions. [2020-09-17 00:44:29,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 00:44:29,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-17 00:44:29,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:44:29,930 INFO L225 Difference]: With dead ends: 160 [2020-09-17 00:44:29,933 INFO L226 Difference]: Without dead ends: 123 [2020-09-17 00:44:29,933 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 [2020-09-17 00:44:29,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-17 00:44:29,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-09-17 00:44:29,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-17 00:44:29,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-09-17 00:44:29,947 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 12 [2020-09-17 00:44:29,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:44:29,947 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-09-17 00:44:29,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 00:44:29,948 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-09-17 00:44:29,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-17 00:44:29,949 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:44:29,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:44:29,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-17 00:44:29,949 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:44:29,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:44:29,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-09-17 00:44:29,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:44:29,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478041213] [2020-09-17 00:44:29,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:44:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:44:30,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:44:30,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478041213] [2020-09-17 00:44:30,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:44:30,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 00:44:30,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121373665] [2020-09-17 00:44:30,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-17 00:44:30,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:44:30,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-17 00:44:30,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-17 00:44:30,051 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 6 states. [2020-09-17 00:44:30,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:44:30,102 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-09-17 00:44:30,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-17 00:44:30,102 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-17 00:44:30,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:44:30,103 INFO L225 Difference]: With dead ends: 118 [2020-09-17 00:44:30,104 INFO L226 Difference]: Without dead ends: 108 [2020-09-17 00:44:30,104 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 [2020-09-17 00:44:30,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-17 00:44:30,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-09-17 00:44:30,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-17 00:44:30,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-09-17 00:44:30,109 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-09-17 00:44:30,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:44:30,109 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-09-17 00:44:30,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-17 00:44:30,109 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-09-17 00:44:30,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 00:44:30,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:44:30,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:44:30,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-17 00:44:30,111 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:44:30,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:44:30,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-09-17 00:44:30,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:44:30,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988879280] [2020-09-17 00:44:30,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:44:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:44:30,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:44:30,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988879280] [2020-09-17 00:44:30,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:44:30,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:44:30,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514619913] [2020-09-17 00:44:30,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:44:30,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:44:30,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:44:30,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:44:30,173 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-09-17 00:44:30,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:44:30,188 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-09-17 00:44:30,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 00:44:30,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-17 00:44:30,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:44:30,189 INFO L225 Difference]: With dead ends: 133 [2020-09-17 00:44:30,189 INFO L226 Difference]: Without dead ends: 54 [2020-09-17 00:44:30,190 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 [2020-09-17 00:44:30,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-17 00:44:30,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-17 00:44:30,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-17 00:44:30,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-09-17 00:44:30,192 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-09-17 00:44:30,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:44:30,193 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-09-17 00:44:30,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:44:30,193 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-09-17 00:44:30,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 00:44:30,194 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:44:30,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:44:30,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-17 00:44:30,194 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:44:30,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:44:30,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 2 times [2020-09-17 00:44:30,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:44:30,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688185052] [2020-09-17 00:44:30,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:44:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:44:30,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:44:30,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688185052] [2020-09-17 00:44:30,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:44:30,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:44:30,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255990150] [2020-09-17 00:44:30,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:44:30,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:44:30,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:44:30,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:44:30,249 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-09-17 00:44:30,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:44:30,268 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2020-09-17 00:44:30,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 00:44:30,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-17 00:44:30,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:44:30,269 INFO L225 Difference]: With dead ends: 63 [2020-09-17 00:44:30,269 INFO L226 Difference]: Without dead ends: 38 [2020-09-17 00:44:30,269 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 [2020-09-17 00:44:30,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-17 00:44:30,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-17 00:44:30,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-17 00:44:30,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-09-17 00:44:30,271 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 17 [2020-09-17 00:44:30,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:44:30,272 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-09-17 00:44:30,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:44:30,272 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-09-17 00:44:30,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 00:44:30,273 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:44:30,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:44:30,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-17 00:44:30,273 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:44:30,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:44:30,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1965606506, now seen corresponding path program 3 times [2020-09-17 00:44:30,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:44:30,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485053485] [2020-09-17 00:44:30,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:44:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:44:30,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:44:30,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485053485] [2020-09-17 00:44:30,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:44:30,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:44:30,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410058419] [2020-09-17 00:44:30,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:44:30,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:44:30,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:44:30,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:44:30,328 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-09-17 00:44:30,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:44:30,348 INFO L93 Difference]: Finished difference Result 56 states and 90 transitions. [2020-09-17 00:44:30,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:44:30,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-17 00:44:30,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:44:30,349 INFO L225 Difference]: With dead ends: 56 [2020-09-17 00:44:30,350 INFO L226 Difference]: Without dead ends: 35 [2020-09-17 00:44:30,350 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 [2020-09-17 00:44:30,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-17 00:44:30,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-17 00:44:30,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-17 00:44:30,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-09-17 00:44:30,352 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-09-17 00:44:30,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:44:30,352 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-09-17 00:44:30,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:44:30,353 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-09-17 00:44:30,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 00:44:30,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:44:30,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:44:30,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-17 00:44:30,354 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:44:30,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:44:30,354 INFO L82 PathProgramCache]: Analyzing trace with hash -828702424, now seen corresponding path program 4 times [2020-09-17 00:44:30,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:44:30,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974430750] [2020-09-17 00:44:30,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:44:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:44:30,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:44:30,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974430750] [2020-09-17 00:44:30,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:44:30,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:44:30,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116929234] [2020-09-17 00:44:30,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:44:30,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:44:30,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:44:30,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:44:30,413 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-09-17 00:44:30,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:44:30,428 INFO L93 Difference]: Finished difference Result 34 states and 55 transitions. [2020-09-17 00:44:30,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 00:44:30,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-17 00:44:30,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:44:30,429 INFO L225 Difference]: With dead ends: 34 [2020-09-17 00:44:30,429 INFO L226 Difference]: Without dead ends: 0 [2020-09-17 00:44:30,430 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 [2020-09-17 00:44:30,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-17 00:44:30,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-17 00:44:30,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-17 00:44:30,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-17 00:44:30,431 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-17 00:44:30,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:44:30,431 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-17 00:44:30,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:44:30,431 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-17 00:44:30,431 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-17 00:44:30,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-17 00:44:30,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 12:44:30 BasicIcfg [2020-09-17 00:44:30,437 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-17 00:44:30,439 INFO L168 Benchmark]: Toolchain (without parser) took 5303.05 ms. Allocated memory was 136.8 MB in the beginning and 254.8 MB in the end (delta: 118.0 MB). Free memory was 97.2 MB in the beginning and 161.1 MB in the end (delta: -63.9 MB). Peak memory consumption was 54.1 MB. Max. memory is 7.1 GB. [2020-09-17 00:44:30,440 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 136.8 MB. Free memory was 117.1 MB in the beginning and 116.7 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-17 00:44:30,441 INFO L168 Benchmark]: CACSL2BoogieTranslator took 847.27 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 96.4 MB in the beginning and 157.7 MB in the end (delta: -61.3 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-09-17 00:44:30,442 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.13 ms. Allocated memory is still 200.3 MB. Free memory was 157.7 MB in the beginning and 155.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-17 00:44:30,443 INFO L168 Benchmark]: Boogie Preprocessor took 32.66 ms. Allocated memory is still 200.3 MB. Free memory was 155.7 MB in the beginning and 154.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. [2020-09-17 00:44:30,444 INFO L168 Benchmark]: RCFGBuilder took 506.50 ms. Allocated memory is still 200.3 MB. Free memory was 154.6 MB in the beginning and 131.8 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-09-17 00:44:30,445 INFO L168 Benchmark]: TraceAbstraction took 3846.79 ms. Allocated memory was 200.3 MB in the beginning and 254.8 MB in the end (delta: 54.5 MB). Free memory was 131.8 MB in the beginning and 161.1 MB in the end (delta: -29.4 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-09-17 00:44:30,449 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 136.8 MB. Free memory was 117.1 MB in the beginning and 116.7 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 847.27 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 96.4 MB in the beginning and 157.7 MB in the end (delta: -61.3 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.13 ms. Allocated memory is still 200.3 MB. Free memory was 157.7 MB in the beginning and 155.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.66 ms. Allocated memory is still 200.3 MB. Free memory was 155.7 MB in the beginning and 154.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 506.50 ms. Allocated memory is still 200.3 MB. Free memory was 154.6 MB in the beginning and 131.8 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3846.79 ms. Allocated memory was 200.3 MB in the beginning and 254.8 MB in the end (delta: 54.5 MB). Free memory was 131.8 MB in the beginning and 161.1 MB in the end (delta: -29.4 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 672 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 205 SDtfs, 151 SDslu, 247 SDs, 0 SdLazy, 129 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 4232 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...