/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/safe023_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:20:40,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:20:40,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:20:40,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:20:40,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:20:40,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:20:40,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:20:40,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:20:40,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:20:40,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:20:40,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:20:40,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:20:40,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:20:40,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:20:40,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:20:40,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:20:40,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:20:40,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:20:40,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:20:40,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:20:40,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:20:40,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:20:40,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:20:40,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:20:40,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 11:20:40,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 11:20:40,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 11:20:40,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 11:20:40,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 11:20:40,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 11:20:40,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:20:40,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:20:40,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:20:40,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:20:40,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:20:40,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:20:40,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:20:40,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:20:40,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:20:40,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:20:40,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:20:40,193 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 11:20:40,236 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:20:40,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:20:40,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:20:40,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:20:40,238 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:20:40,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:20:40,239 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:20:40,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:20:40,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:20:40,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:20:40,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:20:40,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:20:40,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:20:40,241 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:20:40,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:20:40,241 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:20:40,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:20:40,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:20:40,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:20:40,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:20:40,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:20:40,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:20:40,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:20:40,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:20:40,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:20:40,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:20:40,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:20:40,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:20:40,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:20:40,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:20:40,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:20:40,567 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:20:40,571 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:20:40,572 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:20:40,573 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:20:40,573 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2020-10-16 11:20:40,639 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9aa555d86/4a6a99f25a444f259dac113913a5a83a/FLAG7caf1b8b3 [2020-10-16 11:20:41,179 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:20:41,180 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2020-10-16 11:20:41,192 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9aa555d86/4a6a99f25a444f259dac113913a5a83a/FLAG7caf1b8b3 [2020-10-16 11:20:41,453 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9aa555d86/4a6a99f25a444f259dac113913a5a83a [2020-10-16 11:20:41,461 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:20:41,462 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:20:41,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:20:41,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:20:41,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:20:41,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:20:41" (1/1) ... [2020-10-16 11:20:41,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a922c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:41, skipping insertion in model container [2020-10-16 11:20:41,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:20:41" (1/1) ... [2020-10-16 11:20:41,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:20:41,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:20:41,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:20:41,954 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:20:42,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:20:42,104 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:20:42,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:42 WrapperNode [2020-10-16 11:20:42,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:20:42,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:20:42,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:20:42,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:20:42,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:42" (1/1) ... [2020-10-16 11:20:42,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:42" (1/1) ... [2020-10-16 11:20:42,153 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:20:42,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:20:42,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:20:42,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:20:42,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:42" (1/1) ... [2020-10-16 11:20:42,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:42" (1/1) ... [2020-10-16 11:20:42,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:42" (1/1) ... [2020-10-16 11:20:42,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:42" (1/1) ... [2020-10-16 11:20:42,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:42" (1/1) ... [2020-10-16 11:20:42,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:42" (1/1) ... [2020-10-16 11:20:42,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:42" (1/1) ... [2020-10-16 11:20:42,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:20:42,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:20:42,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:20:42,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:20:42,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:42" (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 11:20:42,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:20:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 11:20:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:20:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:20:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 11:20:42,260 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 11:20:42,261 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 11:20:42,261 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 11:20:42,261 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 11:20:42,261 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 11:20:42,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 11:20:42,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:20:42,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:20:42,263 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 11:20:42,618 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:20:42,619 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 11:20:42,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:20:42 BoogieIcfgContainer [2020-10-16 11:20:42,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:20:42,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:20:42,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:20:42,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:20:42,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:20:41" (1/3) ... [2020-10-16 11:20:42,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5837d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:20:42, skipping insertion in model container [2020-10-16 11:20:42,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:42" (2/3) ... [2020-10-16 11:20:42,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5837d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:20:42, skipping insertion in model container [2020-10-16 11:20:42,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:20:42" (3/3) ... [2020-10-16 11:20:42,630 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.opt.i [2020-10-16 11:20:42,640 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:20:42,641 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:20:42,647 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:20:42,648 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:20:42,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,673 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,674 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,674 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,675 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,676 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,676 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,677 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,677 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,677 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,677 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,678 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,678 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,678 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,682 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,682 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,683 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,683 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,693 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,693 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,694 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,694 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,696 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,696 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,697 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,697 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:42,699 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:20:42,712 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 11:20:42,732 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:20:42,732 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:20:42,732 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:20:42,732 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:20:42,732 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:20:42,733 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:20:42,733 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:20:42,733 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:20:42,745 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:20:42,748 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 11:20:42,750 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 11:20:42,752 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 11:20:42,795 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 11:20:42,795 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:20:42,801 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. [2020-10-16 11:20:42,803 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 11:20:44,352 INFO L132 LiptonReduction]: Checked pairs total: 2936 [2020-10-16 11:20:44,353 INFO L134 LiptonReduction]: Total number of compositions: 59 [2020-10-16 11:20:44,360 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-16 11:20:44,386 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 11:20:44,388 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 11:20:44,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:20:44,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:44,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:44,397 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:44,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:44,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-10-16 11:20:44,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:44,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216487749] [2020-10-16 11:20:44,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:44,620 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 11:20:44,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216487749] [2020-10-16 11:20:44,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:44,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:20:44,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335196668] [2020-10-16 11:20:44,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:20:44,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:44,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:20:44,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:20:44,648 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 11:20:44,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:44,699 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-10-16 11:20:44,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:20:44,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 11:20:44,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:44,716 INFO L225 Difference]: With dead ends: 294 [2020-10-16 11:20:44,717 INFO L226 Difference]: Without dead ends: 230 [2020-10-16 11:20:44,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:20:44,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-16 11:20:44,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-10-16 11:20:44,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-16 11:20:44,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-10-16 11:20:44,784 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-10-16 11:20:44,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:44,786 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-10-16 11:20:44,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:20:44,786 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-10-16 11:20:44,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:20:44,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:44,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:44,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:20:44,788 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:44,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:44,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1775895904, now seen corresponding path program 1 times [2020-10-16 11:20:44,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:44,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578110723] [2020-10-16 11:20:44,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:44,857 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 11:20:44,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578110723] [2020-10-16 11:20:44,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:44,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:20:44,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222673922] [2020-10-16 11:20:44,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:20:44,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:44,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:20:44,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:20:44,861 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-10-16 11:20:44,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:44,878 INFO L93 Difference]: Finished difference Result 344 states and 903 transitions. [2020-10-16 11:20:44,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:20:44,879 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 11:20:44,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:44,881 INFO L225 Difference]: With dead ends: 344 [2020-10-16 11:20:44,882 INFO L226 Difference]: Without dead ends: 254 [2020-10-16 11:20:44,882 INFO L677 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 [2020-10-16 11:20:44,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-16 11:20:44,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 218. [2020-10-16 11:20:44,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-16 11:20:44,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 570 transitions. [2020-10-16 11:20:44,900 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 570 transitions. Word has length 9 [2020-10-16 11:20:44,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:44,901 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 570 transitions. [2020-10-16 11:20:44,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:20:44,901 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 570 transitions. [2020-10-16 11:20:44,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:20:44,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:44,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:44,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:20:44,903 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:44,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:44,903 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-10-16 11:20:44,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:44,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471196167] [2020-10-16 11:20:44,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:44,943 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 11:20:44,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471196167] [2020-10-16 11:20:44,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:44,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:20:44,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691263366] [2020-10-16 11:20:44,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:20:44,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:44,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:20:44,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:20:44,946 INFO L87 Difference]: Start difference. First operand 218 states and 570 transitions. Second operand 3 states. [2020-10-16 11:20:44,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:44,952 INFO L93 Difference]: Finished difference Result 194 states and 488 transitions. [2020-10-16 11:20:44,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:20:44,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 11:20:44,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:44,954 INFO L225 Difference]: With dead ends: 194 [2020-10-16 11:20:44,954 INFO L226 Difference]: Without dead ends: 164 [2020-10-16 11:20:44,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:20:44,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-16 11:20:44,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-10-16 11:20:44,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-16 11:20:44,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 422 transitions. [2020-10-16 11:20:44,965 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 422 transitions. Word has length 9 [2020-10-16 11:20:44,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:44,965 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 422 transitions. [2020-10-16 11:20:44,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:20:44,965 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 422 transitions. [2020-10-16 11:20:44,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:20:44,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:44,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:44,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:20:44,967 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:44,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:44,968 INFO L82 PathProgramCache]: Analyzing trace with hash -424003265, now seen corresponding path program 1 times [2020-10-16 11:20:44,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:44,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507406107] [2020-10-16 11:20:44,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:45,011 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 11:20:45,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507406107] [2020-10-16 11:20:45,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:45,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:20:45,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899079609] [2020-10-16 11:20:45,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:20:45,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:45,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:20:45,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:20:45,014 INFO L87 Difference]: Start difference. First operand 164 states and 422 transitions. Second operand 3 states. [2020-10-16 11:20:45,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:45,028 INFO L93 Difference]: Finished difference Result 158 states and 403 transitions. [2020-10-16 11:20:45,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:20:45,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 11:20:45,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:45,030 INFO L225 Difference]: With dead ends: 158 [2020-10-16 11:20:45,030 INFO L226 Difference]: Without dead ends: 158 [2020-10-16 11:20:45,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:20:45,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-16 11:20:45,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-10-16 11:20:45,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-16 11:20:45,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 403 transitions. [2020-10-16 11:20:45,039 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 403 transitions. Word has length 11 [2020-10-16 11:20:45,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:45,039 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 403 transitions. [2020-10-16 11:20:45,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:20:45,040 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 403 transitions. [2020-10-16 11:20:45,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 11:20:45,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:45,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:45,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:20:45,042 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:45,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:45,042 INFO L82 PathProgramCache]: Analyzing trace with hash -259200532, now seen corresponding path program 1 times [2020-10-16 11:20:45,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:45,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047260389] [2020-10-16 11:20:45,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:45,102 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 11:20:45,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047260389] [2020-10-16 11:20:45,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:45,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:20:45,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952656898] [2020-10-16 11:20:45,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:20:45,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:45,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:20:45,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:20:45,104 INFO L87 Difference]: Start difference. First operand 158 states and 403 transitions. Second operand 4 states. [2020-10-16 11:20:45,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:45,123 INFO L93 Difference]: Finished difference Result 188 states and 468 transitions. [2020-10-16 11:20:45,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:20:45,123 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 11:20:45,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:45,124 INFO L225 Difference]: With dead ends: 188 [2020-10-16 11:20:45,124 INFO L226 Difference]: Without dead ends: 110 [2020-10-16 11:20:45,125 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 11:20:45,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-16 11:20:45,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-10-16 11:20:45,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-16 11:20:45,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 255 transitions. [2020-10-16 11:20:45,130 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 255 transitions. Word has length 12 [2020-10-16 11:20:45,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:45,130 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 255 transitions. [2020-10-16 11:20:45,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:20:45,131 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 255 transitions. [2020-10-16 11:20:45,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:20:45,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:45,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:45,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:20:45,132 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:45,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:45,133 INFO L82 PathProgramCache]: Analyzing trace with hash 554696714, now seen corresponding path program 1 times [2020-10-16 11:20:45,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:45,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723466792] [2020-10-16 11:20:45,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:45,174 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 11:20:45,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723466792] [2020-10-16 11:20:45,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:45,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:20:45,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690626441] [2020-10-16 11:20:45,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:20:45,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:45,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:20:45,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:20:45,176 INFO L87 Difference]: Start difference. First operand 110 states and 255 transitions. Second operand 4 states. [2020-10-16 11:20:45,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:45,203 INFO L93 Difference]: Finished difference Result 128 states and 277 transitions. [2020-10-16 11:20:45,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:20:45,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 11:20:45,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:45,205 INFO L225 Difference]: With dead ends: 128 [2020-10-16 11:20:45,205 INFO L226 Difference]: Without dead ends: 97 [2020-10-16 11:20:45,205 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 11:20:45,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-16 11:20:45,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-16 11:20:45,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-16 11:20:45,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 209 transitions. [2020-10-16 11:20:45,209 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 209 transitions. Word has length 13 [2020-10-16 11:20:45,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:45,209 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 209 transitions. [2020-10-16 11:20:45,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:20:45,210 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 209 transitions. [2020-10-16 11:20:45,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 11:20:45,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:45,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:45,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:20:45,212 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:45,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:45,212 INFO L82 PathProgramCache]: Analyzing trace with hash 2052968077, now seen corresponding path program 1 times [2020-10-16 11:20:45,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:45,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367962639] [2020-10-16 11:20:45,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:45,270 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 11:20:45,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367962639] [2020-10-16 11:20:45,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:45,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:20:45,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584739027] [2020-10-16 11:20:45,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:20:45,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:45,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:20:45,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:20:45,272 INFO L87 Difference]: Start difference. First operand 97 states and 209 transitions. Second operand 5 states. [2020-10-16 11:20:45,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:45,312 INFO L93 Difference]: Finished difference Result 99 states and 200 transitions. [2020-10-16 11:20:45,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:20:45,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-16 11:20:45,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:45,313 INFO L225 Difference]: With dead ends: 99 [2020-10-16 11:20:45,313 INFO L226 Difference]: Without dead ends: 79 [2020-10-16 11:20:45,314 INFO L677 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 [2020-10-16 11:20:45,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-16 11:20:45,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-16 11:20:45,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-16 11:20:45,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 157 transitions. [2020-10-16 11:20:45,317 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 157 transitions. Word has length 14 [2020-10-16 11:20:45,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:45,317 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 157 transitions. [2020-10-16 11:20:45,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:20:45,318 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 157 transitions. [2020-10-16 11:20:45,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:20:45,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:45,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:45,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 11:20:45,319 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:45,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:45,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1697163721, now seen corresponding path program 1 times [2020-10-16 11:20:45,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:45,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737185723] [2020-10-16 11:20:45,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:45,362 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 11:20:45,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737185723] [2020-10-16 11:20:45,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:45,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 11:20:45,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268808705] [2020-10-16 11:20:45,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 11:20:45,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:45,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 11:20:45,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:20:45,364 INFO L87 Difference]: Start difference. First operand 79 states and 157 transitions. Second operand 6 states. [2020-10-16 11:20:45,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:45,405 INFO L93 Difference]: Finished difference Result 76 states and 149 transitions. [2020-10-16 11:20:45,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:20:45,406 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-16 11:20:45,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:45,407 INFO L225 Difference]: With dead ends: 76 [2020-10-16 11:20:45,407 INFO L226 Difference]: Without dead ends: 69 [2020-10-16 11:20:45,407 INFO L677 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 [2020-10-16 11:20:45,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-16 11:20:45,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-16 11:20:45,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-16 11:20:45,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 137 transitions. [2020-10-16 11:20:45,410 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 137 transitions. Word has length 15 [2020-10-16 11:20:45,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:45,410 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 137 transitions. [2020-10-16 11:20:45,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 11:20:45,411 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 137 transitions. [2020-10-16 11:20:45,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:20:45,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:45,412 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 11:20:45,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 11:20:45,412 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:45,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:45,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-10-16 11:20:45,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:45,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992888623] [2020-10-16 11:20:45,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:45,441 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 11:20:45,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992888623] [2020-10-16 11:20:45,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:45,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:20:45,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048942056] [2020-10-16 11:20:45,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:20:45,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:45,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:20:45,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:20:45,443 INFO L87 Difference]: Start difference. First operand 69 states and 137 transitions. Second operand 4 states. [2020-10-16 11:20:45,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:45,457 INFO L93 Difference]: Finished difference Result 68 states and 136 transitions. [2020-10-16 11:20:45,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:20:45,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 11:20:45,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:45,458 INFO L225 Difference]: With dead ends: 68 [2020-10-16 11:20:45,458 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 11:20:45,458 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 11:20:45,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 11:20:45,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 11:20:45,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 11:20:45,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 11:20:45,459 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 11:20:45,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:45,460 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 11:20:45,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:20:45,460 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 11:20:45,460 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 11:20:45,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 11:20:45,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:20:45 BasicIcfg [2020-10-16 11:20:45,464 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:20:45,466 INFO L168 Benchmark]: Toolchain (without parser) took 4003.37 ms. Allocated memory was 140.5 MB in the beginning and 245.9 MB in the end (delta: 105.4 MB). Free memory was 100.9 MB in the beginning and 152.7 MB in the end (delta: -51.8 MB). Peak memory consumption was 53.6 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:45,467 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 11:20:45,468 INFO L168 Benchmark]: CACSL2BoogieTranslator took 643.38 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 100.7 MB in the beginning and 158.8 MB in the end (delta: -58.1 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:45,469 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.66 ms. Allocated memory is still 202.4 MB. Free memory was 158.8 MB in the beginning and 156.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:45,470 INFO L168 Benchmark]: Boogie Preprocessor took 26.65 ms. Allocated memory is still 202.4 MB. Free memory was 156.8 MB in the beginning and 155.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:45,470 INFO L168 Benchmark]: RCFGBuilder took 440.59 ms. Allocated memory is still 202.4 MB. Free memory was 154.8 MB in the beginning and 132.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:45,471 INFO L168 Benchmark]: TraceAbstraction took 2841.32 ms. Allocated memory was 202.4 MB in the beginning and 245.9 MB in the end (delta: 43.5 MB). Free memory was 132.6 MB in the beginning and 152.7 MB in the end (delta: -20.1 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:45,475 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 643.38 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 100.7 MB in the beginning and 158.8 MB in the end (delta: -58.1 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.66 ms. Allocated memory is still 202.4 MB. Free memory was 158.8 MB in the beginning and 156.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.65 ms. Allocated memory is still 202.4 MB. Free memory was 156.8 MB in the beginning and 155.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 440.59 ms. Allocated memory is still 202.4 MB. Free memory was 154.8 MB in the beginning and 132.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2841.32 ms. Allocated memory was 202.4 MB in the beginning and 245.9 MB in the end (delta: 43.5 MB). Free memory was 132.6 MB in the beginning and 152.7 MB in the end (delta: -20.1 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 883 VarBasedMoverChecksPositive, 46 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 70 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2936 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 165 SDtfs, 119 SDslu, 178 SDs, 0 SdLazy, 111 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 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, 9 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 3169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...