/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/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_single_elem_init.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 19:45:28,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 19:45:28,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 19:45:28,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 19:45:28,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 19:45:28,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 19:45:28,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 19:45:28,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 19:45:28,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 19:45:28,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 19:45:28,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 19:45:28,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 19:45:28,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 19:45:28,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 19:45:28,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 19:45:28,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 19:45:28,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 19:45:28,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 19:45:28,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 19:45:28,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 19:45:28,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 19:45:28,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 19:45:28,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 19:45:28,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 19:45:28,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 19:45:28,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 19:45:28,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 19:45:28,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 19:45:28,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 19:45:28,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-26 19:45:28,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 19:45:28,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 19:45:28,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 19:45:28,201 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 19:45:28,253 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 19:45:28,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 19:45:28,259 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 19:45:28,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 19:45:28,260 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 19:45:28,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 19:45:28,261 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 19:45:28,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 19:45:28,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 19:45:28,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 19:45:28,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 19:45:28,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 19:45:28,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 19:45:28,263 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 19:45:28,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 19:45:28,264 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 19:45:28,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 19:45:28,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 19:45:28,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 19:45:28,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 19:45:28,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 19:45:28,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:45:28,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 19:45:28,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 19:45:28,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 19:45:28,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 19:45:28,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 19:45:28,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 19:45:28,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 19:45:28,266 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 19:45:28,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 19:45:28,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 19:45:28,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 19:45:28,808 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 19:45:28,812 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 19:45:28,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_single_elem_init.i [2020-10-26 19:45:28,891 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1dda2408b/4bec5d9d0d704fcba71235f896fc2966/FLAGe7235bc0d [2020-10-26 19:45:29,667 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 19:45:29,668 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/array_of_struct_single_elem_init.i [2020-10-26 19:45:29,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1dda2408b/4bec5d9d0d704fcba71235f896fc2966/FLAGe7235bc0d [2020-10-26 19:45:29,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1dda2408b/4bec5d9d0d704fcba71235f896fc2966 [2020-10-26 19:45:29,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 19:45:29,999 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 19:45:30,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 19:45:30,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 19:45:30,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 19:45:30,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:45:29" (1/1) ... [2020-10-26 19:45:30,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@127d19c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:45:30, skipping insertion in model container [2020-10-26 19:45:30,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:45:29" (1/1) ... [2020-10-26 19:45:30,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 19:45:30,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 19:45:30,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:45:32,232 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 19:45:32,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:45:32,352 INFO L208 MainTranslator]: Completed translation [2020-10-26 19:45:32,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:45:32 WrapperNode [2020-10-26 19:45:32,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 19:45:32,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 19:45:32,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 19:45:32,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 19:45:32,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:45:32" (1/1) ... [2020-10-26 19:45:32,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:45:32" (1/1) ... [2020-10-26 19:45:32,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:45:32" (1/1) ... [2020-10-26 19:45:32,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:45:32" (1/1) ... [2020-10-26 19:45:32,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:45:32" (1/1) ... [2020-10-26 19:45:32,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:45:32" (1/1) ... [2020-10-26 19:45:32,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:45:32" (1/1) ... [2020-10-26 19:45:32,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 19:45:32,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 19:45:32,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 19:45:32,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 19:45:32,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:45:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:45:32,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 19:45:32,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 19:45:32,620 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 19:45:32,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-26 19:45:32,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 19:45:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 19:45:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 19:45:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-26 19:45:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-26 19:45:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 19:45:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 19:45:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 19:45:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-26 19:45:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 19:45:32,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 19:45:32,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 19:45:32,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 19:45:32,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 19:45:32,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 19:45:32,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 19:45:33,244 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 19:45:33,245 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-26 19:45:33,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:45:33 BoogieIcfgContainer [2020-10-26 19:45:33,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 19:45:33,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 19:45:33,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 19:45:33,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 19:45:33,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:45:29" (1/3) ... [2020-10-26 19:45:33,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c319a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:45:33, skipping insertion in model container [2020-10-26 19:45:33,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:45:32" (2/3) ... [2020-10-26 19:45:33,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c319a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:45:33, skipping insertion in model container [2020-10-26 19:45:33,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:45:33" (3/3) ... [2020-10-26 19:45:33,263 INFO L111 eAbstractionObserver]: Analyzing ICFG array_of_struct_single_elem_init.i [2020-10-26 19:45:33,278 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 19:45:33,286 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 19:45:33,302 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 19:45:33,352 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 19:45:33,352 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 19:45:33,352 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 19:45:33,352 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 19:45:33,352 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 19:45:33,352 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 19:45:33,353 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 19:45:33,353 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 19:45:33,375 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-26 19:45:33,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 19:45:33,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:45:33,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:45:33,385 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:45:33,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:45:33,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1917630349, now seen corresponding path program 1 times [2020-10-26 19:45:33,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:45:33,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178374759] [2020-10-26 19:45:33,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:45:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:45:33,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:45:33,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:45:33,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-26 19:45:33,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:45:33,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-26 19:45:33,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:45:33,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:45:33,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:45:33,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:45:33,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 19:45:33,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:45:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:45:33,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:45:33,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:45:33,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:45:33,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:45:33,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 19:45:33,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:45:33,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:45:33,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:45:33,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:45:33,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:45:33,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:45:33,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178374759] [2020-10-26 19:45:33,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:45:33,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 19:45:33,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806363166] [2020-10-26 19:45:33,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 19:45:33,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:45:33,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 19:45:33,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 19:45:33,958 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-10-26 19:45:34,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:45:34,081 INFO L93 Difference]: Finished difference Result 55 states and 72 transitions. [2020-10-26 19:45:34,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 19:45:34,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-26 19:45:34,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:45:34,092 INFO L225 Difference]: With dead ends: 55 [2020-10-26 19:45:34,092 INFO L226 Difference]: Without dead ends: 27 [2020-10-26 19:45:34,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 19:45:34,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-26 19:45:34,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-10-26 19:45:34,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-26 19:45:34,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-10-26 19:45:34,142 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 17 [2020-10-26 19:45:34,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:45:34,143 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-10-26 19:45:34,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 19:45:34,143 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-10-26 19:45:34,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 19:45:34,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:45:34,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:45:34,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 19:45:34,145 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:45:34,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:45:34,146 INFO L82 PathProgramCache]: Analyzing trace with hash -32099162, now seen corresponding path program 1 times [2020-10-26 19:45:34,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:45:34,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541524526] [2020-10-26 19:45:34,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:45:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:45:34,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:45:34,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:45:34,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-26 19:45:34,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:45:34,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-26 19:45:34,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:45:34,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:45:34,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:45:34,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 19:45:34,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:45:34,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:45:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:45:34,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:45:34,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:45:34,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:45:34,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:45:34,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 19:45:34,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:45:34,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:45:34,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:45:34,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:45:34,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:45:34,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:45:34,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541524526] [2020-10-26 19:45:34,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:45:34,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 19:45:34,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942894685] [2020-10-26 19:45:34,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 19:45:34,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:45:34,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 19:45:34,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:45:34,413 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 4 states. [2020-10-26 19:45:34,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:45:34,591 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2020-10-26 19:45:34,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 19:45:34,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-26 19:45:34,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:45:34,594 INFO L225 Difference]: With dead ends: 50 [2020-10-26 19:45:34,595 INFO L226 Difference]: Without dead ends: 35 [2020-10-26 19:45:34,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:45:34,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-26 19:45:34,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2020-10-26 19:45:34,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-26 19:45:34,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-26 19:45:34,610 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 17 [2020-10-26 19:45:34,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:45:34,610 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-26 19:45:34,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 19:45:34,610 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-26 19:45:34,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 19:45:34,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:45:34,611 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, 1] [2020-10-26 19:45:34,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 19:45:34,612 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:45:34,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:45:34,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1743023967, now seen corresponding path program 1 times [2020-10-26 19:45:34,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:45:34,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173469653] [2020-10-26 19:45:34,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:45:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:45:34,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:45:34,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:45:35,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:45:35,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-26 19:45:35,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:45:35,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1180 [2020-10-26 19:45:35,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:45:35,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:45:35,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:45:35,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:45:35,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:45:35,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:45:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:45:35,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:45:35,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:45:35,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:45:35,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:45:35,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:45:35,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:45:35,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:45:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:45:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:45:35,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:45:35,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:45:35,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173469653] [2020-10-26 19:45:35,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:45:35,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 19:45:35,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915742512] [2020-10-26 19:45:35,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 19:45:35,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:45:35,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 19:45:35,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:45:35,907 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2020-10-26 19:45:36,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:45:36,067 INFO L93 Difference]: Finished difference Result 60 states and 75 transitions. [2020-10-26 19:45:36,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 19:45:36,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-26 19:45:36,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:45:36,070 INFO L225 Difference]: With dead ends: 60 [2020-10-26 19:45:36,070 INFO L226 Difference]: Without dead ends: 45 [2020-10-26 19:45:36,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:45:36,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-26 19:45:36,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30. [2020-10-26 19:45:36,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-26 19:45:36,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-26 19:45:36,081 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 21 [2020-10-26 19:45:36,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:45:36,081 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-26 19:45:36,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 19:45:36,082 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-26 19:45:36,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-26 19:45:36,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:45:36,083 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:45:36,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 19:45:36,083 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:45:36,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:45:36,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1211336932, now seen corresponding path program 2 times [2020-10-26 19:45:36,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:45:36,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039434559] [2020-10-26 19:45:36,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:45:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:45:36,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:45:36,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:45:37,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:45:37,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 19:45:37,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:45:37,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1531 [2020-10-26 19:45:37,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:45:37,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-26 19:45:37,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 19:45:37,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-26 19:45:37,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 19:45:38,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:45:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:45:38,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:45:38,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:45:38,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:45:38,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:45:38,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 19:45:38,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:45:38,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:45:38,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:45:38,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 19:45:38,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 19:45:38,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:45:38,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039434559] [2020-10-26 19:45:38,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:45:38,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-26 19:45:38,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314894860] [2020-10-26 19:45:38,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-26 19:45:38,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:45:38,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-26 19:45:38,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-26 19:45:38,211 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 15 states. [2020-10-26 19:45:39,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:45:39,151 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2020-10-26 19:45:39,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 19:45:39,152 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 25 [2020-10-26 19:45:39,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:45:39,154 INFO L225 Difference]: With dead ends: 73 [2020-10-26 19:45:39,154 INFO L226 Difference]: Without dead ends: 69 [2020-10-26 19:45:39,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2020-10-26 19:45:39,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-26 19:45:39,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 46. [2020-10-26 19:45:39,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-26 19:45:39,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2020-10-26 19:45:39,167 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 25 [2020-10-26 19:45:39,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:45:39,167 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2020-10-26 19:45:39,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-26 19:45:39,168 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2020-10-26 19:45:39,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-26 19:45:39,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:45:39,169 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:45:39,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 19:45:39,169 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:45:39,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:45:39,170 INFO L82 PathProgramCache]: Analyzing trace with hash 2072513114, now seen corresponding path program 1 times [2020-10-26 19:45:39,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:45:39,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879568240] [2020-10-26 19:45:39,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:45:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:45:39,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:45:39,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:45:39,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:45:41,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:45:41,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 19:45:41,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 19:45:41,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2003 [2020-10-26 19:45:41,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:45:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 19:45:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 19:45:41,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-26 19:45:41,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:45:41,240 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 10: A-local: [(main_~i~0_9 Int)], B-local: []. [2020-10-26 19:45:41,241 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 11: A-local: [(main_~i~0_9 Int)], B-local: []. [2020-10-26 19:45:41,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 19:45:41,249 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:851) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-26 19:45:41,256 INFO L168 Benchmark]: Toolchain (without parser) took 11261.91 ms. Allocated memory was 157.3 MB in the beginning and 994.1 MB in the end (delta: 836.8 MB). Free memory was 133.0 MB in the beginning and 849.6 MB in the end (delta: -716.5 MB). Peak memory consumption was 399.7 MB. Max. memory is 8.0 GB. [2020-10-26 19:45:41,257 INFO L168 Benchmark]: CDTParser took 0.73 ms. Allocated memory is still 125.8 MB. Free memory is still 84.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 19:45:41,258 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2350.92 ms. Allocated memory was 157.3 MB in the beginning and 494.9 MB in the end (delta: 337.6 MB). Free memory was 132.4 MB in the beginning and 212.9 MB in the end (delta: -80.5 MB). Peak memory consumption was 268.3 MB. Max. memory is 8.0 GB. [2020-10-26 19:45:41,259 INFO L168 Benchmark]: Boogie Preprocessor took 177.68 ms. Allocated memory is still 494.9 MB. Free memory was 212.9 MB in the beginning and 264.2 MB in the end (delta: -51.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 8.0 GB. [2020-10-26 19:45:41,259 INFO L168 Benchmark]: RCFGBuilder took 714.14 ms. Allocated memory is still 494.9 MB. Free memory was 264.2 MB in the beginning and 246.9 MB in the end (delta: 17.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-10-26 19:45:41,261 INFO L168 Benchmark]: TraceAbstraction took 8001.55 ms. Allocated memory was 494.9 MB in the beginning and 994.1 MB in the end (delta: 499.1 MB). Free memory was 246.4 MB in the beginning and 849.6 MB in the end (delta: -603.1 MB). Peak memory consumption was 173.9 MB. Max. memory is 8.0 GB. [2020-10-26 19:45:41,265 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73 ms. Allocated memory is still 125.8 MB. Free memory is still 84.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 2350.92 ms. Allocated memory was 157.3 MB in the beginning and 494.9 MB in the end (delta: 337.6 MB). Free memory was 132.4 MB in the beginning and 212.9 MB in the end (delta: -80.5 MB). Peak memory consumption was 268.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 177.68 ms. Allocated memory is still 494.9 MB. Free memory was 212.9 MB in the beginning and 264.2 MB in the end (delta: -51.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 8.0 GB. * RCFGBuilder took 714.14 ms. Allocated memory is still 494.9 MB. Free memory was 264.2 MB in the beginning and 246.9 MB in the end (delta: 17.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8001.55 ms. Allocated memory was 494.9 MB in the beginning and 994.1 MB in the end (delta: 499.1 MB). Free memory was 246.4 MB in the beginning and 849.6 MB in the end (delta: -603.1 MB). Peak memory consumption was 173.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...