/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/pthread-wmm/safe028_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:44:50,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:44:50,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:44:50,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:44:50,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:44:50,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:44:50,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:44:50,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:44:50,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:44:50,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:44:50,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:44:50,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:44:50,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:44:50,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:44:50,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:44:50,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:44:50,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:44:50,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:44:50,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:44:50,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:44:50,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:44:50,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:44:50,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:44:50,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:44:50,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 13:44:50,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:44:50,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:44:50,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:44:50,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:44:50,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:44:50,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:44:50,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:44:50,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:44:50,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:44:50,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:44:50,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:44:50,894 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 13:44:50,922 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:44:50,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:44:50,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:44:50,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:44:50,924 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:44:50,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:44:50,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:44:50,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:44:50,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:44:50,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:44:50,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:44:50,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:44:50,926 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:44:50,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:44:50,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:44:50,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:44:50,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:44:50,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:44:50,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:44:50,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:44:50,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:44:50,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:44:50,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:44:50,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:44:50,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:44:50,930 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:44:51,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:44:51,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:44:51,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:44:51,316 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:44:51,317 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:44:51,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe028_pso.opt.i [2020-12-23 13:44:51,396 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/feba56df5/ea96bf5ea23043f2a8618d8fc3abb7bf/FLAG01a29cb6c [2020-12-23 13:44:52,151 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:44:52,153 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe028_pso.opt.i [2020-12-23 13:44:52,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/feba56df5/ea96bf5ea23043f2a8618d8fc3abb7bf/FLAG01a29cb6c [2020-12-23 13:44:52,366 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/feba56df5/ea96bf5ea23043f2a8618d8fc3abb7bf [2020-12-23 13:44:52,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:44:52,379 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:44:52,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:44:52,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:44:52,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:44:52,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:44:52" (1/1) ... [2020-12-23 13:44:52,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32df33b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:52, skipping insertion in model container [2020-12-23 13:44:52,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:44:52" (1/1) ... [2020-12-23 13:44:52,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:44:52,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:44:52,617 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe028_pso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:44:52,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:44:52,844 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:44:52,859 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe028_pso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:44:52,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:44:53,058 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:44:53,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:53 WrapperNode [2020-12-23 13:44:53,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:44:53,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:44:53,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:44:53,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:44:53,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:53" (1/1) ... [2020-12-23 13:44:53,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:53" (1/1) ... [2020-12-23 13:44:53,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:44:53,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:44:53,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:44:53,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:44:53,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:53" (1/1) ... [2020-12-23 13:44:53,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:53" (1/1) ... [2020-12-23 13:44:53,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:53" (1/1) ... [2020-12-23 13:44:53,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:53" (1/1) ... [2020-12-23 13:44:53,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:53" (1/1) ... [2020-12-23 13:44:53,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:53" (1/1) ... [2020-12-23 13:44:53,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:53" (1/1) ... [2020-12-23 13:44:53,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:44:53,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:44:53,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:44:53,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:44:53,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 13:44:53,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:44:53,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:44:53,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:44:53,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:44:53,295 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-23 13:44:53,295 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-23 13:44:53,296 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-23 13:44:53,297 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-23 13:44:53,297 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-23 13:44:53,298 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-23 13:44:53,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:44:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:44:53,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:44:53,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:44:53,308 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-23 13:44:53,847 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:44:53,848 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 13:44:53,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:44:53 BoogieIcfgContainer [2020-12-23 13:44:53,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:44:53,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:44:53,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:44:53,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:44:53,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:44:52" (1/3) ... [2020-12-23 13:44:53,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c5ab91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:44:53, skipping insertion in model container [2020-12-23 13:44:53,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:53" (2/3) ... [2020-12-23 13:44:53,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c5ab91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:44:53, skipping insertion in model container [2020-12-23 13:44:53,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:44:53" (3/3) ... [2020-12-23 13:44:53,859 INFO L111 eAbstractionObserver]: Analyzing ICFG safe028_pso.opt.i [2020-12-23 13:44:53,866 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:44:53,866 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:44:53,871 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:44:53,872 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:44:53,914 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,914 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,915 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,915 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,915 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,915 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,916 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,916 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,916 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,916 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,917 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,917 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,917 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,918 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,918 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,918 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,918 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,918 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,919 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,919 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,919 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,919 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,920 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,920 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,921 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,921 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,921 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,921 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,921 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,922 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,922 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,922 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,923 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,923 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,923 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,923 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,926 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,926 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,926 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,927 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,933 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,934 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,934 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,934 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,938 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,938 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,939 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,939 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:53,942 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-23 13:44:53,966 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-23 13:44:53,990 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:44:53,990 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:44:53,990 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:44:53,990 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:44:53,991 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:44:53,991 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:44:53,991 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:44:53,991 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:44:54,005 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:44:54,008 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-23 13:44:54,012 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-23 13:44:54,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2020-12-23 13:44:54,058 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2020-12-23 13:44:54,059 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-23 13:44:54,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-12-23 13:44:54,066 INFO L116 LiptonReduction]: Number of co-enabled transitions 1212 [2020-12-23 13:44:56,275 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-12-23 13:44:56,712 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 13:44:57,024 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 13:44:57,212 INFO L131 LiptonReduction]: Checked pairs total: 2149 [2020-12-23 13:44:57,212 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-12-23 13:44:57,220 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-12-23 13:44:57,245 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-12-23 13:44:57,247 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-12-23 13:44:57,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 13:44:57,255 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:57,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:57,256 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:57,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:57,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1647971710, now seen corresponding path program 1 times [2020-12-23 13:44:57,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:57,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258804796] [2020-12-23 13:44:57,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:57,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:44:57,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258804796] [2020-12-23 13:44:57,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:57,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:44:57,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474118158] [2020-12-23 13:44:57,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 13:44:57,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:57,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 13:44:57,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:44:57,553 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-12-23 13:44:57,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:57,584 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-12-23 13:44:57,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 13:44:57,586 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-23 13:44:57,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:57,607 INFO L225 Difference]: With dead ends: 274 [2020-12-23 13:44:57,607 INFO L226 Difference]: Without dead ends: 226 [2020-12-23 13:44:57,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:44:57,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-23 13:44:57,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-12-23 13:44:57,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-12-23 13:44:57,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-12-23 13:44:57,695 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-12-23 13:44:57,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:57,697 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-12-23 13:44:57,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 13:44:57,697 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-12-23 13:44:57,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 13:44:57,699 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:57,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:57,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:44:57,701 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:57,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:57,702 INFO L82 PathProgramCache]: Analyzing trace with hash -452492411, now seen corresponding path program 1 times [2020-12-23 13:44:57,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:57,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755884852] [2020-12-23 13:44:57,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:57,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:44:57,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755884852] [2020-12-23 13:44:57,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:57,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:44:57,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75182720] [2020-12-23 13:44:57,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:44:57,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:57,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:44:57,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:44:57,935 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-12-23 13:44:57,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:57,967 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-12-23 13:44:57,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:44:57,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-23 13:44:57,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:57,971 INFO L225 Difference]: With dead ends: 250 [2020-12-23 13:44:57,971 INFO L226 Difference]: Without dead ends: 202 [2020-12-23 13:44:57,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:44:57,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-12-23 13:44:57,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-12-23 13:44:57,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-23 13:44:57,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-12-23 13:44:57,992 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-12-23 13:44:57,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:57,992 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-12-23 13:44:57,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:44:57,993 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-12-23 13:44:57,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:44:57,994 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:57,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:57,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:44:57,995 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:57,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:57,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1142322672, now seen corresponding path program 1 times [2020-12-23 13:44:57,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:57,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548324883] [2020-12-23 13:44:57,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:58,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:44:58,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548324883] [2020-12-23 13:44:58,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:58,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:44:58,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661047898] [2020-12-23 13:44:58,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:44:58,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:58,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:44:58,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:44:58,134 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 5 states. [2020-12-23 13:44:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:58,200 INFO L93 Difference]: Finished difference Result 262 states and 697 transitions. [2020-12-23 13:44:58,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:44:58,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:44:58,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:58,204 INFO L225 Difference]: With dead ends: 262 [2020-12-23 13:44:58,204 INFO L226 Difference]: Without dead ends: 154 [2020-12-23 13:44:58,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:44:58,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-12-23 13:44:58,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-12-23 13:44:58,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-12-23 13:44:58,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 392 transitions. [2020-12-23 13:44:58,236 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 392 transitions. Word has length 10 [2020-12-23 13:44:58,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:58,237 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 392 transitions. [2020-12-23 13:44:58,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:44:58,237 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 392 transitions. [2020-12-23 13:44:58,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:44:58,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:58,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:58,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:44:58,244 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:58,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:58,245 INFO L82 PathProgramCache]: Analyzing trace with hash -2010812812, now seen corresponding path program 1 times [2020-12-23 13:44:58,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:58,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721029327] [2020-12-23 13:44:58,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:58,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:44:58,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721029327] [2020-12-23 13:44:58,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:58,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:44:58,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960821746] [2020-12-23 13:44:58,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:44:58,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:58,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:44:58,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:44:58,341 INFO L87 Difference]: Start difference. First operand 154 states and 392 transitions. Second operand 3 states. [2020-12-23 13:44:58,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:58,353 INFO L93 Difference]: Finished difference Result 130 states and 299 transitions. [2020-12-23 13:44:58,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:44:58,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-12-23 13:44:58,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:58,356 INFO L225 Difference]: With dead ends: 130 [2020-12-23 13:44:58,356 INFO L226 Difference]: Without dead ends: 130 [2020-12-23 13:44:58,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:44:58,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-12-23 13:44:58,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-12-23 13:44:58,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-23 13:44:58,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 299 transitions. [2020-12-23 13:44:58,370 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 299 transitions. Word has length 11 [2020-12-23 13:44:58,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:58,370 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 299 transitions. [2020-12-23 13:44:58,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:44:58,371 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 299 transitions. [2020-12-23 13:44:58,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:44:58,374 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:58,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:58,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:44:58,375 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:58,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:58,376 INFO L82 PathProgramCache]: Analyzing trace with hash -216590115, now seen corresponding path program 1 times [2020-12-23 13:44:58,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:58,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769970537] [2020-12-23 13:44:58,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:58,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:44:58,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769970537] [2020-12-23 13:44:58,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:58,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:44:58,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154027076] [2020-12-23 13:44:58,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:44:58,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:58,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:44:58,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:44:58,453 INFO L87 Difference]: Start difference. First operand 130 states and 299 transitions. Second operand 4 states. [2020-12-23 13:44:58,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:58,470 INFO L93 Difference]: Finished difference Result 92 states and 186 transitions. [2020-12-23 13:44:58,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:44:58,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-23 13:44:58,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:58,471 INFO L225 Difference]: With dead ends: 92 [2020-12-23 13:44:58,472 INFO L226 Difference]: Without dead ends: 92 [2020-12-23 13:44:58,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:44:58,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-23 13:44:58,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-12-23 13:44:58,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-23 13:44:58,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-12-23 13:44:58,478 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 12 [2020-12-23 13:44:58,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:58,478 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-12-23 13:44:58,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:44:58,478 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-12-23 13:44:58,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 13:44:58,479 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:58,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:58,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:44:58,479 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:58,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:58,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1316923756, now seen corresponding path program 1 times [2020-12-23 13:44:58,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:58,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970410686] [2020-12-23 13:44:58,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:58,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:44:58,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970410686] [2020-12-23 13:44:58,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:58,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:44:58,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977228774] [2020-12-23 13:44:58,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:44:58,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:58,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:44:58,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:44:58,561 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 5 states. [2020-12-23 13:44:58,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:58,592 INFO L93 Difference]: Finished difference Result 73 states and 148 transitions. [2020-12-23 13:44:58,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:44:58,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 13:44:58,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:58,593 INFO L225 Difference]: With dead ends: 73 [2020-12-23 13:44:58,593 INFO L226 Difference]: Without dead ends: 73 [2020-12-23 13:44:58,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:44:58,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-23 13:44:58,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-12-23 13:44:58,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-23 13:44:58,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 148 transitions. [2020-12-23 13:44:58,597 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 148 transitions. Word has length 14 [2020-12-23 13:44:58,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:58,598 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 148 transitions. [2020-12-23 13:44:58,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:44:58,598 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 148 transitions. [2020-12-23 13:44:58,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 13:44:58,599 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:58,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:58,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 13:44:58,599 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:58,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:58,600 INFO L82 PathProgramCache]: Analyzing trace with hash 193291591, now seen corresponding path program 1 times [2020-12-23 13:44:58,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:58,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87593593] [2020-12-23 13:44:58,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:58,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:44:58,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87593593] [2020-12-23 13:44:58,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:58,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:44:58,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844501805] [2020-12-23 13:44:58,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:44:58,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:58,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:44:58,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:44:58,685 INFO L87 Difference]: Start difference. First operand 73 states and 148 transitions. Second operand 5 states. [2020-12-23 13:44:58,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:58,713 INFO L93 Difference]: Finished difference Result 87 states and 170 transitions. [2020-12-23 13:44:58,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:44:58,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-23 13:44:58,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:58,714 INFO L225 Difference]: With dead ends: 87 [2020-12-23 13:44:58,714 INFO L226 Difference]: Without dead ends: 34 [2020-12-23 13:44:58,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:44:58,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-23 13:44:58,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-23 13:44:58,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-23 13:44:58,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2020-12-23 13:44:58,717 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 17 [2020-12-23 13:44:58,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:58,717 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2020-12-23 13:44:58,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:44:58,717 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2020-12-23 13:44:58,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 13:44:58,718 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:58,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:58,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 13:44:58,718 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:58,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:58,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1222037843, now seen corresponding path program 2 times [2020-12-23 13:44:58,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:58,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620173299] [2020-12-23 13:44:58,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:58,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:44:58,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620173299] [2020-12-23 13:44:58,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:58,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:44:58,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018681106] [2020-12-23 13:44:58,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:44:58,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:58,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:44:58,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:44:58,800 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 5 states. [2020-12-23 13:44:58,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:58,831 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2020-12-23 13:44:58,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:44:58,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-23 13:44:58,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:58,835 INFO L225 Difference]: With dead ends: 33 [2020-12-23 13:44:58,835 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:44:58,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:44:58,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:44:58,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:44:58,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:44:58,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:44:58,836 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-23 13:44:58,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:58,837 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:44:58,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:44:58,837 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:44:58,837 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:44:58,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 13:44:58,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:44:58 BasicIcfg [2020-12-23 13:44:58,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:44:58,842 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:44:58,842 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:44:58,842 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:44:58,843 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:44:53" (3/4) ... [2020-12-23 13:44:58,847 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:44:58,854 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-23 13:44:58,854 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-23 13:44:58,854 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-23 13:44:58,861 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-23 13:44:58,861 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:44:58,861 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:44:58,861 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:44:58,927 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe028_pso.opt.i-witness.graphml [2020-12-23 13:44:58,928 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:44:58,929 INFO L168 Benchmark]: Toolchain (without parser) took 6551.79 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 124.7 MB in the beginning and 185.9 MB in the end (delta: -61.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:58,930 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:44:58,931 INFO L168 Benchmark]: CACSL2BoogieTranslator took 676.62 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 126.8 MB in the end (delta: -2.3 MB). Peak memory consumption was 27.9 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:58,932 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.45 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 124.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:58,932 INFO L168 Benchmark]: Boogie Preprocessor took 32.29 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 123.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:58,933 INFO L168 Benchmark]: RCFGBuilder took 700.12 ms. Allocated memory is still 151.0 MB. Free memory was 123.3 MB in the beginning and 101.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:58,934 INFO L168 Benchmark]: TraceAbstraction took 4989.49 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 100.8 MB in the beginning and 189.1 MB in the end (delta: -88.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:44:58,935 INFO L168 Benchmark]: Witness Printer took 86.08 ms. Allocated memory is still 218.1 MB. Free memory was 188.5 MB in the beginning and 185.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:58,939 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 676.62 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 126.8 MB in the end (delta: -2.3 MB). Peak memory consumption was 27.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 56.45 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 124.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.29 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 123.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 700.12 ms. Allocated memory is still 151.0 MB. Free memory was 123.3 MB in the beginning and 101.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4989.49 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 100.8 MB in the beginning and 189.1 MB in the end (delta: -88.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 86.08 ms. Allocated memory is still 218.1 MB. Free memory was 188.5 MB in the beginning and 185.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 784 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 24 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 49 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.2s, 82 PlacesBefore, 31 PlacesAfterwards, 74 TransitionsBefore, 22 TransitionsAfterwards, 1212 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 63 TotalNumberOfCompositions, 2149 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 148 SDtfs, 126 SDslu, 207 SDs, 0 SdLazy, 77 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3082 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...