/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 15:37:28,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 15:37:28,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 15:37:29,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 15:37:29,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 15:37:29,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 15:37:29,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 15:37:29,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 15:37:29,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 15:37:29,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 15:37:29,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 15:37:29,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 15:37:29,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 15:37:29,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 15:37:29,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 15:37:29,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 15:37:29,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 15:37:29,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 15:37:29,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 15:37:29,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 15:37:29,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 15:37:29,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 15:37:29,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 15:37:29,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 15:37:29,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 15:37:29,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 15:37:29,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 15:37:29,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 15:37:29,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 15:37:29,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 15:37:29,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 15:37:29,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 15:37:29,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 15:37:29,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 15:37:29,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 15:37:29,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 15:37:29,160 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-11-09 15:37:29,216 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 15:37:29,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 15:37:29,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 15:37:29,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 15:37:29,222 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 15:37:29,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 15:37:29,223 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 15:37:29,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 15:37:29,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 15:37:29,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 15:37:29,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 15:37:29,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 15:37:29,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 15:37:29,226 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 15:37:29,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 15:37:29,226 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 15:37:29,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 15:37:29,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 15:37:29,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 15:37:29,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 15:37:29,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 15:37:29,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 15:37:29,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 15:37:29,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 15:37:29,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 15:37:29,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 15:37:29,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 15:37:29,229 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 15:37:29,229 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 15:37:29,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 15:37:29,230 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 15:37:29,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 15:37:29,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 15:37:29,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 15:37:29,714 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 15:37:29,715 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 15:37:29,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-11-09 15:37:29,806 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdc3ace2c/cf8b700fff8c403083839eeca2180dad/FLAG93dda8266 [2020-11-09 15:37:30,576 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 15:37:30,578 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-11-09 15:37:30,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdc3ace2c/cf8b700fff8c403083839eeca2180dad/FLAG93dda8266 [2020-11-09 15:37:30,790 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdc3ace2c/cf8b700fff8c403083839eeca2180dad [2020-11-09 15:37:30,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 15:37:30,806 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 15:37:30,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 15:37:30,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 15:37:30,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 15:37:30,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:37:30" (1/1) ... [2020-11-09 15:37:30,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1189f473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:30, skipping insertion in model container [2020-11-09 15:37:30,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:37:30" (1/1) ... [2020-11-09 15:37:30,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 15:37:30,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 15:37:31,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:37:31,394 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 15:37:31,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:37:31,597 INFO L208 MainTranslator]: Completed translation [2020-11-09 15:37:31,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:31 WrapperNode [2020-11-09 15:37:31,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 15:37:31,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 15:37:31,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 15:37:31,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 15:37:31,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:31" (1/1) ... [2020-11-09 15:37:31,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:31" (1/1) ... [2020-11-09 15:37:31,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 15:37:31,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 15:37:31,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 15:37:31,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 15:37:31,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:31" (1/1) ... [2020-11-09 15:37:31,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:31" (1/1) ... [2020-11-09 15:37:31,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:31" (1/1) ... [2020-11-09 15:37:31,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:31" (1/1) ... [2020-11-09 15:37:31,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:31" (1/1) ... [2020-11-09 15:37:31,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:31" (1/1) ... [2020-11-09 15:37:31,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:31" (1/1) ... [2020-11-09 15:37:31,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 15:37:31,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 15:37:31,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 15:37:31,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 15:37:31,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 15:37:31,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 15:37:31,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 15:37:31,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 15:37:31,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 15:37:31,779 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 15:37:31,779 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 15:37:31,779 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 15:37:31,779 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 15:37:31,779 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 15:37:31,779 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 15:37:31,779 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-11-09 15:37:31,780 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-11-09 15:37:31,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 15:37:31,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 15:37:31,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 15:37:31,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 15:37:31,782 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 15:37:32,203 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 15:37:32,203 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 15:37:32,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:37:32 BoogieIcfgContainer [2020-11-09 15:37:32,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 15:37:32,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 15:37:32,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 15:37:32,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 15:37:32,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:37:30" (1/3) ... [2020-11-09 15:37:32,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12768543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:37:32, skipping insertion in model container [2020-11-09 15:37:32,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:31" (2/3) ... [2020-11-09 15:37:32,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12768543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:37:32, skipping insertion in model container [2020-11-09 15:37:32,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:37:32" (3/3) ... [2020-11-09 15:37:32,215 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2020-11-09 15:37:32,231 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 15:37:32,232 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 15:37:32,240 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 15:37:32,241 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 15:37:32,312 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,312 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,312 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,312 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,313 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,313 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,313 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,313 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,317 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,317 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,318 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,318 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,318 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,318 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,319 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,319 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,319 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,319 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,319 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,320 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,323 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,323 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,324 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,324 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,324 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,325 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,325 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,328 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,328 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,329 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,329 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,329 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,329 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,330 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,330 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,330 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,331 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,334 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,334 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,334 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,335 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,335 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,335 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,335 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,336 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,337 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,337 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,337 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,340 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,341 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,341 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,341 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,355 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,355 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,355 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,355 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,358 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,358 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,358 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,359 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,361 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,361 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,361 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,361 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:32,363 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 15:37:32,379 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-09 15:37:32,402 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:37:32,402 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:37:32,402 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:37:32,402 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:37:32,403 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:37:32,403 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:37:32,403 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:37:32,403 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:37:32,416 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:37:32,417 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 89 transitions, 198 flow [2020-11-09 15:37:32,421 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 89 transitions, 198 flow [2020-11-09 15:37:32,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 89 transitions, 198 flow [2020-11-09 15:37:32,477 INFO L129 PetriNetUnfolder]: 3/85 cut-off events. [2020-11-09 15:37:32,478 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 15:37:32,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 85 events. 3/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2020-11-09 15:37:32,487 INFO L116 LiptonReduction]: Number of co-enabled transitions 2042 [2020-11-09 15:37:34,840 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-11-09 15:37:36,107 WARN L194 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-09 15:37:36,213 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 15:37:36,455 WARN L194 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-09 15:37:36,576 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 15:37:36,871 WARN L194 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-11-09 15:37:36,951 INFO L131 LiptonReduction]: Checked pairs total: 4334 [2020-11-09 15:37:36,952 INFO L133 LiptonReduction]: Total number of compositions: 82 [2020-11-09 15:37:36,963 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 26 transitions, 72 flow [2020-11-09 15:37:37,032 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-11-09 15:37:37,034 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-11-09 15:37:37,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 15:37:37,045 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:37,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:37,046 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:37,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:37,053 INFO L82 PathProgramCache]: Analyzing trace with hash -782796091, now seen corresponding path program 1 times [2020-11-09 15:37:37,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:37,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380204904] [2020-11-09 15:37:37,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:37,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:37,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380204904] [2020-11-09 15:37:37,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:37,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 15:37:37,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1293615653] [2020-11-09 15:37:37,342 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:37,348 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:37,369 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-11-09 15:37:37,370 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:37,376 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:37,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:37:37,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:37,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:37:37,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:37,398 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-11-09 15:37:37,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:37,464 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-11-09 15:37:37,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:37:37,468 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-09 15:37:37,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:37,506 INFO L225 Difference]: With dead ends: 670 [2020-11-09 15:37:37,507 INFO L226 Difference]: Without dead ends: 526 [2020-11-09 15:37:37,508 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 [2020-11-09 15:37:37,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-11-09 15:37:37,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-11-09 15:37:37,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-11-09 15:37:37,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-11-09 15:37:37,613 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-11-09 15:37:37,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:37,614 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-11-09 15:37:37,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:37:37,615 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-11-09 15:37:37,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 15:37:37,618 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:37,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:37,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 15:37:37,618 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:37,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:37,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1879702246, now seen corresponding path program 1 times [2020-11-09 15:37:37,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:37,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506337362] [2020-11-09 15:37:37,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:37,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:37,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506337362] [2020-11-09 15:37:37,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:37,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:37:37,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2023647613] [2020-11-09 15:37:37,744 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:37,745 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:37,747 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-11-09 15:37:37,747 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:37,836 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:37,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:37:37,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:37,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:37:37,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:37:37,839 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-11-09 15:37:37,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:37,880 INFO L93 Difference]: Finished difference Result 724 states and 2331 transitions. [2020-11-09 15:37:37,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:37:37,880 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-09 15:37:37,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:37,886 INFO L225 Difference]: With dead ends: 724 [2020-11-09 15:37:37,887 INFO L226 Difference]: Without dead ends: 412 [2020-11-09 15:37:37,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:37:37,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-11-09 15:37:37,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2020-11-09 15:37:37,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-11-09 15:37:37,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1323 transitions. [2020-11-09 15:37:37,932 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 1323 transitions. Word has length 11 [2020-11-09 15:37:37,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:37,933 INFO L481 AbstractCegarLoop]: Abstraction has 412 states and 1323 transitions. [2020-11-09 15:37:37,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:37:37,933 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 1323 transitions. [2020-11-09 15:37:37,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 15:37:37,938 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:37,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:37,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 15:37:37,941 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:37,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:37,944 INFO L82 PathProgramCache]: Analyzing trace with hash -647796126, now seen corresponding path program 1 times [2020-11-09 15:37:37,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:37,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23312452] [2020-11-09 15:37:37,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:38,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:38,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23312452] [2020-11-09 15:37:38,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:38,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 15:37:38,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1736235919] [2020-11-09 15:37:38,062 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:38,063 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:38,068 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 16 transitions. [2020-11-09 15:37:38,068 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:38,097 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:38,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:37:38,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:38,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:37:38,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:38,100 INFO L87 Difference]: Start difference. First operand 412 states and 1323 transitions. Second operand 3 states. [2020-11-09 15:37:38,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:38,124 INFO L93 Difference]: Finished difference Result 402 states and 1280 transitions. [2020-11-09 15:37:38,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:37:38,125 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-09 15:37:38,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:38,129 INFO L225 Difference]: With dead ends: 402 [2020-11-09 15:37:38,130 INFO L226 Difference]: Without dead ends: 402 [2020-11-09 15:37:38,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:38,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-11-09 15:37:38,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2020-11-09 15:37:38,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-11-09 15:37:38,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1280 transitions. [2020-11-09 15:37:38,151 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1280 transitions. Word has length 12 [2020-11-09 15:37:38,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:38,152 INFO L481 AbstractCegarLoop]: Abstraction has 402 states and 1280 transitions. [2020-11-09 15:37:38,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:37:38,152 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1280 transitions. [2020-11-09 15:37:38,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 15:37:38,158 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:38,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:38,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 15:37:38,159 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:38,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:38,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1393153852, now seen corresponding path program 1 times [2020-11-09 15:37:38,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:38,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632364049] [2020-11-09 15:37:38,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:38,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:38,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632364049] [2020-11-09 15:37:38,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:38,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:37:38,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [233756263] [2020-11-09 15:37:38,203 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:38,205 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:38,207 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 19 transitions. [2020-11-09 15:37:38,207 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:38,210 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:38,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:37:38,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:38,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:37:38,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:38,212 INFO L87 Difference]: Start difference. First operand 402 states and 1280 transitions. Second operand 3 states. [2020-11-09 15:37:38,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:38,242 INFO L93 Difference]: Finished difference Result 518 states and 1560 transitions. [2020-11-09 15:37:38,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:37:38,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-09 15:37:38,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:38,247 INFO L225 Difference]: With dead ends: 518 [2020-11-09 15:37:38,247 INFO L226 Difference]: Without dead ends: 422 [2020-11-09 15:37:38,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:38,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-11-09 15:37:38,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 382. [2020-11-09 15:37:38,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-11-09 15:37:38,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1156 transitions. [2020-11-09 15:37:38,264 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1156 transitions. Word has length 13 [2020-11-09 15:37:38,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:38,265 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 1156 transitions. [2020-11-09 15:37:38,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:37:38,265 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1156 transitions. [2020-11-09 15:37:38,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 15:37:38,266 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:38,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:38,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 15:37:38,266 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:38,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:38,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1393155433, now seen corresponding path program 1 times [2020-11-09 15:37:38,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:38,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456987202] [2020-11-09 15:37:38,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:38,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:38,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456987202] [2020-11-09 15:37:38,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:38,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 15:37:38,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [896896741] [2020-11-09 15:37:38,307 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:38,309 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:38,313 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 37 transitions. [2020-11-09 15:37:38,313 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:38,374 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:38,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:37:38,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:38,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:37:38,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:38,376 INFO L87 Difference]: Start difference. First operand 382 states and 1156 transitions. Second operand 3 states. [2020-11-09 15:37:38,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:38,408 INFO L93 Difference]: Finished difference Result 370 states and 1112 transitions. [2020-11-09 15:37:38,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:37:38,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-09 15:37:38,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:38,413 INFO L225 Difference]: With dead ends: 370 [2020-11-09 15:37:38,413 INFO L226 Difference]: Without dead ends: 370 [2020-11-09 15:37:38,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:38,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-11-09 15:37:38,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2020-11-09 15:37:38,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-11-09 15:37:38,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1112 transitions. [2020-11-09 15:37:38,429 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1112 transitions. Word has length 13 [2020-11-09 15:37:38,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:38,429 INFO L481 AbstractCegarLoop]: Abstraction has 370 states and 1112 transitions. [2020-11-09 15:37:38,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:37:38,430 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1112 transitions. [2020-11-09 15:37:38,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 15:37:38,431 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:38,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:38,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 15:37:38,431 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:38,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:38,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1625881232, now seen corresponding path program 1 times [2020-11-09 15:37:38,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:38,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128324172] [2020-11-09 15:37:38,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:38,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128324172] [2020-11-09 15:37:38,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:38,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:37:38,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [427591297] [2020-11-09 15:37:38,490 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:38,492 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:38,498 INFO L252 McrAutomatonBuilder]: Finished intersection with 31 states and 50 transitions. [2020-11-09 15:37:38,498 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:38,632 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:38,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:37:38,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:38,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:37:38,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:37:38,634 INFO L87 Difference]: Start difference. First operand 370 states and 1112 transitions. Second operand 4 states. [2020-11-09 15:37:38,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:38,669 INFO L93 Difference]: Finished difference Result 530 states and 1546 transitions. [2020-11-09 15:37:38,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:37:38,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-09 15:37:38,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:38,672 INFO L225 Difference]: With dead ends: 530 [2020-11-09 15:37:38,672 INFO L226 Difference]: Without dead ends: 278 [2020-11-09 15:37:38,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:37:38,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-11-09 15:37:38,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-11-09 15:37:38,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-11-09 15:37:38,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 791 transitions. [2020-11-09 15:37:38,685 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 791 transitions. Word has length 14 [2020-11-09 15:37:38,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:38,685 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 791 transitions. [2020-11-09 15:37:38,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:37:38,685 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 791 transitions. [2020-11-09 15:37:38,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 15:37:38,686 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:38,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:38,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 15:37:38,686 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:38,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:38,687 INFO L82 PathProgramCache]: Analyzing trace with hash 238144508, now seen corresponding path program 2 times [2020-11-09 15:37:38,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:38,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521482749] [2020-11-09 15:37:38,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:38,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:38,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521482749] [2020-11-09 15:37:38,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:38,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:37:38,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1372900439] [2020-11-09 15:37:38,773 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:38,775 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:38,781 INFO L252 McrAutomatonBuilder]: Finished intersection with 33 states and 54 transitions. [2020-11-09 15:37:38,782 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:38,796 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:38,820 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:38,843 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:38,886 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:38,916 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:38,935 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:38,991 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:39,011 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:39,033 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [9496#(not (= 4 ~__unbuffered_cnt~0))] [2020-11-09 15:37:39,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:37:39,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:39,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:37:39,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:37:39,035 INFO L87 Difference]: Start difference. First operand 278 states and 791 transitions. Second operand 5 states. [2020-11-09 15:37:39,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:39,124 INFO L93 Difference]: Finished difference Result 292 states and 753 transitions. [2020-11-09 15:37:39,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 15:37:39,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-09 15:37:39,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:39,126 INFO L225 Difference]: With dead ends: 292 [2020-11-09 15:37:39,127 INFO L226 Difference]: Without dead ends: 195 [2020-11-09 15:37:39,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:37:39,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-11-09 15:37:39,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2020-11-09 15:37:39,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-11-09 15:37:39,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 465 transitions. [2020-11-09 15:37:39,136 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 465 transitions. Word has length 14 [2020-11-09 15:37:39,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:39,136 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 465 transitions. [2020-11-09 15:37:39,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:37:39,136 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 465 transitions. [2020-11-09 15:37:39,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 15:37:39,137 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:39,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:39,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 15:37:39,137 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:39,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:39,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1046603743, now seen corresponding path program 1 times [2020-11-09 15:37:39,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:39,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919322350] [2020-11-09 15:37:39,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:39,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:39,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919322350] [2020-11-09 15:37:39,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:39,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 15:37:39,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [901241833] [2020-11-09 15:37:39,240 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:39,241 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:39,248 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 62 transitions. [2020-11-09 15:37:39,249 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:39,256 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:39,290 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:39,311 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:39,374 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [10189#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 15:37:39,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 15:37:39,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:39,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 15:37:39,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:37:39,376 INFO L87 Difference]: Start difference. First operand 195 states and 465 transitions. Second operand 7 states. [2020-11-09 15:37:39,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:39,446 INFO L93 Difference]: Finished difference Result 189 states and 428 transitions. [2020-11-09 15:37:39,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 15:37:39,447 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-11-09 15:37:39,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:39,448 INFO L225 Difference]: With dead ends: 189 [2020-11-09 15:37:39,448 INFO L226 Difference]: Without dead ends: 150 [2020-11-09 15:37:39,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-09 15:37:39,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-09 15:37:39,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-11-09 15:37:39,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-11-09 15:37:39,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 339 transitions. [2020-11-09 15:37:39,454 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 339 transitions. Word has length 16 [2020-11-09 15:37:39,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:39,454 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 339 transitions. [2020-11-09 15:37:39,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 15:37:39,455 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 339 transitions. [2020-11-09 15:37:39,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 15:37:39,455 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:39,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:39,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 15:37:39,456 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:39,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:39,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1569359463, now seen corresponding path program 1 times [2020-11-09 15:37:39,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:39,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717715356] [2020-11-09 15:37:39,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:39,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:39,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717715356] [2020-11-09 15:37:39,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:39,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:37:39,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1566608125] [2020-11-09 15:37:39,494 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:39,496 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:39,537 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 48 transitions. [2020-11-09 15:37:39,537 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:39,553 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:39,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:37:39,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:39,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:37:39,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:37:39,555 INFO L87 Difference]: Start difference. First operand 150 states and 339 transitions. Second operand 4 states. [2020-11-09 15:37:39,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:39,579 INFO L93 Difference]: Finished difference Result 182 states and 403 transitions. [2020-11-09 15:37:39,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:37:39,580 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-09 15:37:39,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:39,582 INFO L225 Difference]: With dead ends: 182 [2020-11-09 15:37:39,582 INFO L226 Difference]: Without dead ends: 139 [2020-11-09 15:37:39,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:37:39,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-11-09 15:37:39,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2020-11-09 15:37:39,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-11-09 15:37:39,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 301 transitions. [2020-11-09 15:37:39,588 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 301 transitions. Word has length 18 [2020-11-09 15:37:39,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:39,588 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 301 transitions. [2020-11-09 15:37:39,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:37:39,588 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 301 transitions. [2020-11-09 15:37:39,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 15:37:39,589 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:39,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:39,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 15:37:39,590 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:39,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:39,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1563997083, now seen corresponding path program 2 times [2020-11-09 15:37:39,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:39,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465435488] [2020-11-09 15:37:39,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:39,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:39,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465435488] [2020-11-09 15:37:39,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:39,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-09 15:37:39,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1575438648] [2020-11-09 15:37:39,681 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:39,683 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:39,692 INFO L252 McrAutomatonBuilder]: Finished intersection with 43 states and 66 transitions. [2020-11-09 15:37:39,693 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:39,719 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:39,733 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [11151#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 15:37:39,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-09 15:37:39,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:39,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-09 15:37:39,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-09 15:37:39,735 INFO L87 Difference]: Start difference. First operand 137 states and 301 transitions. Second operand 8 states. [2020-11-09 15:37:39,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:39,818 INFO L93 Difference]: Finished difference Result 132 states and 289 transitions. [2020-11-09 15:37:39,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-09 15:37:39,819 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-11-09 15:37:39,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:39,823 INFO L225 Difference]: With dead ends: 132 [2020-11-09 15:37:39,823 INFO L226 Difference]: Without dead ends: 51 [2020-11-09 15:37:39,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-09 15:37:39,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-09 15:37:39,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-09 15:37:39,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-09 15:37:39,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 97 transitions. [2020-11-09 15:37:39,826 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 97 transitions. Word has length 18 [2020-11-09 15:37:39,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:39,827 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 97 transitions. [2020-11-09 15:37:39,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-09 15:37:39,827 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 97 transitions. [2020-11-09 15:37:39,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-09 15:37:39,827 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:39,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:39,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-09 15:37:39,828 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:39,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:39,828 INFO L82 PathProgramCache]: Analyzing trace with hash -299924038, now seen corresponding path program 1 times [2020-11-09 15:37:39,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:39,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794610548] [2020-11-09 15:37:39,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:39,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794610548] [2020-11-09 15:37:39,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:39,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:37:39,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1114676452] [2020-11-09 15:37:39,870 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:39,873 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:39,885 INFO L252 McrAutomatonBuilder]: Finished intersection with 52 states and 80 transitions. [2020-11-09 15:37:39,885 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:39,893 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:39,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:37:39,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:39,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:37:39,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:39,895 INFO L87 Difference]: Start difference. First operand 51 states and 97 transitions. Second operand 3 states. [2020-11-09 15:37:39,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:39,905 INFO L93 Difference]: Finished difference Result 50 states and 96 transitions. [2020-11-09 15:37:39,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:37:39,905 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-11-09 15:37:39,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:39,906 INFO L225 Difference]: With dead ends: 50 [2020-11-09 15:37:39,906 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 15:37:39,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:39,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 15:37:39,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 15:37:39,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 15:37:39,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 15:37:39,908 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-11-09 15:37:39,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:39,908 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 15:37:39,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:37:39,908 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 15:37:39,908 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 15:37:39,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-09 15:37:39,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 03:37:39 BasicIcfg [2020-11-09 15:37:39,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 15:37:39,914 INFO L168 Benchmark]: Toolchain (without parser) took 9114.27 ms. Allocated memory was 161.5 MB in the beginning and 242.2 MB in the end (delta: 80.7 MB). Free memory was 134.8 MB in the beginning and 154.3 MB in the end (delta: -19.4 MB). Peak memory consumption was 61.8 MB. Max. memory is 8.0 GB. [2020-11-09 15:37:39,914 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 161.5 MB. Free memory is still 134.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 15:37:39,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 787.04 ms. Allocated memory is still 161.5 MB. Free memory was 134.2 MB in the beginning and 137.4 MB in the end (delta: -3.2 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2020-11-09 15:37:39,921 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.44 ms. Allocated memory is still 161.5 MB. Free memory was 137.4 MB in the beginning and 135.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:37:39,922 INFO L168 Benchmark]: Boogie Preprocessor took 29.64 ms. Allocated memory is still 161.5 MB. Free memory was 135.3 MB in the beginning and 133.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:37:39,924 INFO L168 Benchmark]: RCFGBuilder took 519.01 ms. Allocated memory is still 161.5 MB. Free memory was 133.7 MB in the beginning and 110.2 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:37:39,925 INFO L168 Benchmark]: TraceAbstraction took 7704.51 ms. Allocated memory was 161.5 MB in the beginning and 242.2 MB in the end (delta: 80.7 MB). Free memory was 110.2 MB in the beginning and 154.3 MB in the end (delta: -44.1 MB). Peak memory consumption was 37.7 MB. Max. memory is 8.0 GB. [2020-11-09 15:37:39,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 161.5 MB. Free memory is still 134.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 787.04 ms. Allocated memory is still 161.5 MB. Free memory was 134.2 MB in the beginning and 137.4 MB in the end (delta: -3.2 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 57.44 ms. Allocated memory is still 161.5 MB. Free memory was 137.4 MB in the beginning and 135.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.64 ms. Allocated memory is still 161.5 MB. Free memory was 135.3 MB in the beginning and 133.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 519.01 ms. Allocated memory is still 161.5 MB. Free memory was 133.7 MB in the beginning and 110.2 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7704.51 ms. Allocated memory was 161.5 MB in the beginning and 242.2 MB in the end (delta: 80.7 MB). Free memory was 110.2 MB in the beginning and 154.3 MB in the end (delta: -44.1 MB). Peak memory consumption was 37.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1132 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 64 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.5s, 99 PlacesBefore, 38 PlacesAfterwards, 89 TransitionsBefore, 26 TransitionsAfterwards, 2042 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 82 TotalNumberOfCompositions, 4334 MoverChecksTotal - PositiveResult [Line: 17]: 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 5 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.5s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 239 SDtfs, 176 SDslu, 320 SDs, 0 SdLazy, 178 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 99 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred 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: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 42 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 159 NumberOfCodeBlocks, 159 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 148 ConstructedInterpolants, 0 QuantifiedInterpolants, 5196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...