/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_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:20:06,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:20:06,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:20:06,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:20:06,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:20:06,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:20:06,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:20:06,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:20:06,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:20:06,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:20:06,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:20:06,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:20:06,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:20:06,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:20:06,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:20:06,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:20:06,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:20:06,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:20:06,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:20:06,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:20:06,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:20:06,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:20:06,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:20:06,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:20:06,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 11:20:06,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 11:20:06,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 11:20:06,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 11:20:06,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 11:20:06,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 11:20:06,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:20:06,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:20:06,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:20:06,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:20:06,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:20:06,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:20:06,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:20:06,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:20:06,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:20:06,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:20:06,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:20:06,199 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 [2020-10-16 11:20:06,218 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:20:06,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:20:06,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:20:06,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:20:06,220 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:20:06,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:20:06,220 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:20:06,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:20:06,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:20:06,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:20:06,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:20:06,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:20:06,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:20:06,221 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:20:06,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:20:06,222 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:20:06,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:20:06,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:20:06,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:20:06,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:20:06,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:20:06,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:20:06,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:20:06,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:20:06,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:20:06,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:20:06,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:20:06,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:20:06,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:20:06,225 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:20:06,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:20:06,500 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:20:06,504 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:20:06,505 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:20:06,506 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:20:06,506 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2020-10-16 11:20:06,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d89e6822b/c4b8e114d86e4e77bc9c138483c3fbad/FLAG3b46a8060 [2020-10-16 11:20:07,112 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:20:07,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2020-10-16 11:20:07,130 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d89e6822b/c4b8e114d86e4e77bc9c138483c3fbad/FLAG3b46a8060 [2020-10-16 11:20:07,378 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d89e6822b/c4b8e114d86e4e77bc9c138483c3fbad [2020-10-16 11:20:07,385 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:20:07,387 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:20:07,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:20:07,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:20:07,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:20:07,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:20:07" (1/1) ... [2020-10-16 11:20:07,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d19958b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:07, skipping insertion in model container [2020-10-16 11:20:07,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:20:07" (1/1) ... [2020-10-16 11:20:07,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:20:07,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:20:07,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:20:07,879 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:20:07,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:20:08,037 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:20:08,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:08 WrapperNode [2020-10-16 11:20:08,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:20:08,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:20:08,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:20:08,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:20:08,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:08" (1/1) ... [2020-10-16 11:20:08,062 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:08" (1/1) ... [2020-10-16 11:20:08,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:20:08,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:20:08,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:20:08,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:20:08,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:08" (1/1) ... [2020-10-16 11:20:08,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:08" (1/1) ... [2020-10-16 11:20:08,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:08" (1/1) ... [2020-10-16 11:20:08,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:08" (1/1) ... [2020-10-16 11:20:08,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:08" (1/1) ... [2020-10-16 11:20:08,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:08" (1/1) ... [2020-10-16 11:20:08,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:08" (1/1) ... [2020-10-16 11:20:08,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:20:08,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:20:08,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:20:08,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:20:08,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:20:08,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:20:08,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 11:20:08,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:20:08,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:20:08,175 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 11:20:08,176 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 11:20:08,176 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 11:20:08,176 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 11:20:08,176 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 11:20:08,176 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 11:20:08,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 11:20:08,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:20:08,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:20:08,178 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:20:08,547 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:20:08,547 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 11:20:08,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:20:08 BoogieIcfgContainer [2020-10-16 11:20:08,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:20:08,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:20:08,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:20:08,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:20:08,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:20:07" (1/3) ... [2020-10-16 11:20:08,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b31ea91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:20:08, skipping insertion in model container [2020-10-16 11:20:08,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:08" (2/3) ... [2020-10-16 11:20:08,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b31ea91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:20:08, skipping insertion in model container [2020-10-16 11:20:08,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:20:08" (3/3) ... [2020-10-16 11:20:08,561 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc.i [2020-10-16 11:20:08,573 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:20:08,573 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:20:08,580 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:20:08,581 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:20:08,609 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,609 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,609 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,610 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,610 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,611 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,611 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,611 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,612 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,612 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,612 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,613 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,614 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,614 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,614 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,615 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,615 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,615 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,623 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,623 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,623 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,624 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,633 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,633 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,634 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,634 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,641 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,642 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,642 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,642 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:08,649 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:20:08,659 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 11:20:08,678 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:20:08,678 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:20:08,678 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:20:08,678 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:20:08,678 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:20:08,679 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:20:08,679 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:20:08,679 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:20:08,690 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:20:08,692 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-10-16 11:20:08,694 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 68 transitions, 151 flow [2020-10-16 11:20:08,696 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-16 11:20:08,736 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-16 11:20:08,736 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:20:08,744 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-16 11:20:08,746 INFO L117 LiptonReduction]: Number of co-enabled transitions 1178 [2020-10-16 11:20:10,119 INFO L132 LiptonReduction]: Checked pairs total: 2372 [2020-10-16 11:20:10,120 INFO L134 LiptonReduction]: Total number of compositions: 57 [2020-10-16 11:20:10,126 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-16 11:20:10,151 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-10-16 11:20:10,153 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-10-16 11:20:10,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:20:10,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:10,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:10,162 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:10,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:10,168 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-10-16 11:20:10,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:10,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854824366] [2020-10-16 11:20:10,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:10,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:10,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854824366] [2020-10-16 11:20:10,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:10,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:20:10,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240949534] [2020-10-16 11:20:10,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 11:20:10,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:10,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 11:20:10,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 11:20:10,362 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-10-16 11:20:10,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:10,391 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-10-16 11:20:10,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 11:20:10,393 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-16 11:20:10,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:10,407 INFO L225 Difference]: With dead ends: 274 [2020-10-16 11:20:10,407 INFO L226 Difference]: Without dead ends: 226 [2020-10-16 11:20:10,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 11:20:10,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-16 11:20:10,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-16 11:20:10,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-16 11:20:10,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-10-16 11:20:10,477 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-10-16 11:20:10,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:10,478 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-10-16 11:20:10,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 11:20:10,478 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-10-16 11:20:10,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:20:10,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:10,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:10,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:20:10,480 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:10,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:10,481 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-10-16 11:20:10,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:10,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977853961] [2020-10-16 11:20:10,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:10,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:10,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977853961] [2020-10-16 11:20:10,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:10,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:20:10,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540803688] [2020-10-16 11:20:10,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:20:10,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:10,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:20:10,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:20:10,620 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 5 states. [2020-10-16 11:20:10,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:10,692 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-10-16 11:20:10,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:20:10,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 11:20:10,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:10,695 INFO L225 Difference]: With dead ends: 250 [2020-10-16 11:20:10,695 INFO L226 Difference]: Without dead ends: 202 [2020-10-16 11:20:10,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:20:10,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-16 11:20:10,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-16 11:20:10,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-16 11:20:10,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-10-16 11:20:10,717 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-10-16 11:20:10,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:10,718 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-10-16 11:20:10,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:20:10,718 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-10-16 11:20:10,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 11:20:10,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:10,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:10,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:20:10,720 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:10,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:10,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1465143248, now seen corresponding path program 1 times [2020-10-16 11:20:10,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:10,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496289086] [2020-10-16 11:20:10,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:10,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:10,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496289086] [2020-10-16 11:20:10,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:10,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:20:10,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145144792] [2020-10-16 11:20:10,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:20:10,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:10,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:20:10,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:20:10,811 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 4 states. [2020-10-16 11:20:10,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:10,831 INFO L93 Difference]: Finished difference Result 232 states and 608 transitions. [2020-10-16 11:20:10,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:20:10,831 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-16 11:20:10,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:10,834 INFO L225 Difference]: With dead ends: 232 [2020-10-16 11:20:10,834 INFO L226 Difference]: Without dead ends: 196 [2020-10-16 11:20:10,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:20:10,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-16 11:20:10,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-10-16 11:20:10,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-16 11:20:10,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 530 transitions. [2020-10-16 11:20:10,850 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 530 transitions. Word has length 10 [2020-10-16 11:20:10,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:10,850 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 530 transitions. [2020-10-16 11:20:10,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:20:10,851 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 530 transitions. [2020-10-16 11:20:10,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:20:10,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:10,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:10,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:20:10,853 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:10,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:10,853 INFO L82 PathProgramCache]: Analyzing trace with hash 462854661, now seen corresponding path program 1 times [2020-10-16 11:20:10,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:10,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664743780] [2020-10-16 11:20:10,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:10,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:10,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664743780] [2020-10-16 11:20:10,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:10,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:20:10,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715606280] [2020-10-16 11:20:10,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:20:10,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:10,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:20:10,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:20:10,946 INFO L87 Difference]: Start difference. First operand 196 states and 530 transitions. Second operand 5 states. [2020-10-16 11:20:10,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:10,989 INFO L93 Difference]: Finished difference Result 255 states and 672 transitions. [2020-10-16 11:20:10,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:20:10,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-16 11:20:10,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:10,992 INFO L225 Difference]: With dead ends: 255 [2020-10-16 11:20:10,992 INFO L226 Difference]: Without dead ends: 150 [2020-10-16 11:20:10,992 INFO L677 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 [2020-10-16 11:20:10,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-16 11:20:11,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-10-16 11:20:11,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-16 11:20:11,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-10-16 11:20:11,002 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-10-16 11:20:11,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:11,002 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-10-16 11:20:11,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:20:11,003 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-10-16 11:20:11,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 11:20:11,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:11,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:11,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:20:11,005 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:11,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:11,005 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-10-16 11:20:11,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:11,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878992580] [2020-10-16 11:20:11,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:11,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:11,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878992580] [2020-10-16 11:20:11,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:11,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:20:11,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309320984] [2020-10-16 11:20:11,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:20:11,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:11,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:20:11,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:20:11,086 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 4 states. [2020-10-16 11:20:11,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:11,115 INFO L93 Difference]: Finished difference Result 164 states and 376 transitions. [2020-10-16 11:20:11,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:20:11,115 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 11:20:11,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:11,117 INFO L225 Difference]: With dead ends: 164 [2020-10-16 11:20:11,117 INFO L226 Difference]: Without dead ends: 128 [2020-10-16 11:20:11,117 INFO L677 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 [2020-10-16 11:20:11,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-16 11:20:11,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-10-16 11:20:11,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-16 11:20:11,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 293 transitions. [2020-10-16 11:20:11,145 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 293 transitions. Word has length 12 [2020-10-16 11:20:11,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:11,145 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 293 transitions. [2020-10-16 11:20:11,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:20:11,145 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 293 transitions. [2020-10-16 11:20:11,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:20:11,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:11,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:11,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:20:11,147 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:11,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:11,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1292455845, now seen corresponding path program 1 times [2020-10-16 11:20:11,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:11,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967435938] [2020-10-16 11:20:11,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:11,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967435938] [2020-10-16 11:20:11,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:11,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 11:20:11,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455309170] [2020-10-16 11:20:11,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:20:11,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:11,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:20:11,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:20:11,213 INFO L87 Difference]: Start difference. First operand 128 states and 293 transitions. Second operand 5 states. [2020-10-16 11:20:11,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:11,251 INFO L93 Difference]: Finished difference Result 116 states and 240 transitions. [2020-10-16 11:20:11,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:20:11,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:20:11,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:11,252 INFO L225 Difference]: With dead ends: 116 [2020-10-16 11:20:11,252 INFO L226 Difference]: Without dead ends: 92 [2020-10-16 11:20:11,253 INFO L677 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 [2020-10-16 11:20:11,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-16 11:20:11,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-16 11:20:11,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-16 11:20:11,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-10-16 11:20:11,257 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 13 [2020-10-16 11:20:11,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:11,258 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-10-16 11:20:11,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:20:11,258 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-10-16 11:20:11,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 11:20:11,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:11,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:11,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:20:11,260 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:11,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:11,260 INFO L82 PathProgramCache]: Analyzing trace with hash -228576461, now seen corresponding path program 1 times [2020-10-16 11:20:11,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:11,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181202633] [2020-10-16 11:20:11,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:11,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:11,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181202633] [2020-10-16 11:20:11,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:11,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:20:11,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983497157] [2020-10-16 11:20:11,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:20:11,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:11,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:20:11,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:20:11,301 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 4 states. [2020-10-16 11:20:11,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:11,319 INFO L93 Difference]: Finished difference Result 120 states and 228 transitions. [2020-10-16 11:20:11,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:20:11,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-16 11:20:11,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:11,320 INFO L225 Difference]: With dead ends: 120 [2020-10-16 11:20:11,321 INFO L226 Difference]: Without dead ends: 94 [2020-10-16 11:20:11,321 INFO L677 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 [2020-10-16 11:20:11,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-16 11:20:11,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-10-16 11:20:11,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-16 11:20:11,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 175 transitions. [2020-10-16 11:20:11,325 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 175 transitions. Word has length 14 [2020-10-16 11:20:11,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:11,325 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 175 transitions. [2020-10-16 11:20:11,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:20:11,326 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 175 transitions. [2020-10-16 11:20:11,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:20:11,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:11,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:11,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 11:20:11,327 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:11,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:11,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1357686433, now seen corresponding path program 1 times [2020-10-16 11:20:11,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:11,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199113967] [2020-10-16 11:20:11,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:11,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:11,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199113967] [2020-10-16 11:20:11,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:11,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:20:11,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103551026] [2020-10-16 11:20:11,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:20:11,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:11,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:20:11,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:20:11,414 INFO L87 Difference]: Start difference. First operand 90 states and 175 transitions. Second operand 9 states. [2020-10-16 11:20:11,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:11,557 INFO L93 Difference]: Finished difference Result 119 states and 221 transitions. [2020-10-16 11:20:11,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 11:20:11,558 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-16 11:20:11,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:11,559 INFO L225 Difference]: With dead ends: 119 [2020-10-16 11:20:11,559 INFO L226 Difference]: Without dead ends: 76 [2020-10-16 11:20:11,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-16 11:20:11,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-16 11:20:11,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2020-10-16 11:20:11,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-16 11:20:11,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 123 transitions. [2020-10-16 11:20:11,562 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 123 transitions. Word has length 15 [2020-10-16 11:20:11,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:11,563 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 123 transitions. [2020-10-16 11:20:11,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:20:11,563 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 123 transitions. [2020-10-16 11:20:11,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:20:11,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:11,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:11,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 11:20:11,568 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:11,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:11,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1504039886, now seen corresponding path program 1 times [2020-10-16 11:20:11,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:11,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020383740] [2020-10-16 11:20:11,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:11,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:11,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020383740] [2020-10-16 11:20:11,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:11,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:20:11,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726822593] [2020-10-16 11:20:11,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 11:20:11,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:11,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 11:20:11,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:20:11,657 INFO L87 Difference]: Start difference. First operand 72 states and 123 transitions. Second operand 6 states. [2020-10-16 11:20:11,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:11,701 INFO L93 Difference]: Finished difference Result 65 states and 108 transitions. [2020-10-16 11:20:11,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:20:11,702 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-16 11:20:11,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:11,702 INFO L225 Difference]: With dead ends: 65 [2020-10-16 11:20:11,702 INFO L226 Difference]: Without dead ends: 28 [2020-10-16 11:20:11,703 INFO L677 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 [2020-10-16 11:20:11,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-16 11:20:11,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-16 11:20:11,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-16 11:20:11,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-10-16 11:20:11,705 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 15 [2020-10-16 11:20:11,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:11,705 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-10-16 11:20:11,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 11:20:11,706 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-10-16 11:20:11,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:20:11,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:11,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:11,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 11:20:11,707 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:11,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:11,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1777188338, now seen corresponding path program 1 times [2020-10-16 11:20:11,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:11,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105712581] [2020-10-16 11:20:11,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:11,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:11,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105712581] [2020-10-16 11:20:11,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:11,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-16 11:20:11,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717647183] [2020-10-16 11:20:11,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 11:20:11,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:11,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 11:20:11,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-16 11:20:11,837 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 10 states. [2020-10-16 11:20:11,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:11,909 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-10-16 11:20:11,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 11:20:11,910 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-16 11:20:11,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:11,910 INFO L225 Difference]: With dead ends: 27 [2020-10-16 11:20:11,910 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 11:20:11,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-16 11:20:11,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 11:20:11,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 11:20:11,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 11:20:11,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 11:20:11,912 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 11:20:11,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:11,912 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 11:20:11,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 11:20:11,912 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 11:20:11,912 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 11:20:11,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 11:20:11,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:20:11 BasicIcfg [2020-10-16 11:20:11,917 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:20:11,920 INFO L168 Benchmark]: Toolchain (without parser) took 4532.51 ms. Allocated memory was 141.0 MB in the beginning and 244.8 MB in the end (delta: 103.8 MB). Free memory was 102.5 MB in the beginning and 97.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 108.8 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:11,920 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 11:20:11,921 INFO L168 Benchmark]: CACSL2BoogieTranslator took 649.73 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.2 MB in the beginning and 159.3 MB in the end (delta: -57.1 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:11,922 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.56 ms. Allocated memory is still 204.5 MB. Free memory was 159.3 MB in the beginning and 157.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:11,923 INFO L168 Benchmark]: Boogie Preprocessor took 26.74 ms. Allocated memory is still 204.5 MB. Free memory was 157.4 MB in the beginning and 155.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:11,924 INFO L168 Benchmark]: RCFGBuilder took 437.90 ms. Allocated memory is still 204.5 MB. Free memory was 155.4 MB in the beginning and 133.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:11,924 INFO L168 Benchmark]: TraceAbstraction took 3365.61 ms. Allocated memory was 204.5 MB in the beginning and 244.8 MB in the end (delta: 40.4 MB). Free memory was 133.6 MB in the beginning and 97.5 MB in the end (delta: 36.1 MB). Peak memory consumption was 76.4 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:11,929 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 649.73 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.2 MB in the beginning and 159.3 MB in the end (delta: -57.1 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.56 ms. Allocated memory is still 204.5 MB. Free memory was 159.3 MB in the beginning and 157.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.74 ms. Allocated memory is still 204.5 MB. Free memory was 157.4 MB in the beginning and 155.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 437.90 ms. Allocated memory is still 204.5 MB. Free memory was 155.4 MB in the beginning and 133.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3365.61 ms. Allocated memory was 204.5 MB in the beginning and 244.8 MB in the end (delta: 40.4 MB). Free memory was 133.6 MB in the beginning and 97.5 MB in the end (delta: 36.1 MB). Peak memory consumption was 76.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 738 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 44 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 76 PlacesBefore, 31 PlacesAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 57 TotalNumberOfCompositions, 2372 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 192 SDtfs, 215 SDslu, 432 SDs, 0 SdLazy, 296 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 6142 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...