/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 14:04:39,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 14:04:39,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 14:04:39,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 14:04:39,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 14:04:39,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 14:04:39,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 14:04:39,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 14:04:39,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 14:04:39,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 14:04:39,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 14:04:39,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 14:04:39,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 14:04:39,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 14:04:39,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 14:04:39,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 14:04:39,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 14:04:39,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 14:04:39,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 14:04:39,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 14:04:39,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 14:04:39,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 14:04:39,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 14:04:39,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 14:04:39,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 14:04:39,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 14:04:39,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 14:04:39,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 14:04:39,661 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 14:04:39,673 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 14:04:39,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 14:04:39,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 14:04:39,675 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 14:04:39,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 14:04:39,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 14:04:39,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 14:04:39,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 14:04:39,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 14:04:39,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 14:04:39,676 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 14:04:39,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 14:04:39,677 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 14:04:39,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 14:04:39,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 14:04:39,677 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 14:04:39,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 14:04:39,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 14:04:39,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 14:04:39,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 14:04:39,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 14:04:39,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 14:04:39,679 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 14:04:40,004 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 14:04:40,026 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 14:04:40,030 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 14:04:40,032 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 14:04:40,033 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 14:04:40,034 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c [2020-07-07 14:04:40,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c6c6b50d/052ff87d60094e868f5564477ac4b363/FLAGbdbceb1e4 [2020-07-07 14:04:40,710 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 14:04:40,711 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c [2020-07-07 14:04:40,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c6c6b50d/052ff87d60094e868f5564477ac4b363/FLAGbdbceb1e4 [2020-07-07 14:04:41,050 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c6c6b50d/052ff87d60094e868f5564477ac4b363 [2020-07-07 14:04:41,062 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 14:04:41,065 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 14:04:41,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 14:04:41,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 14:04:41,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 14:04:41,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 02:04:41" (1/1) ... [2020-07-07 14:04:41,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@752db89d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:04:41, skipping insertion in model container [2020-07-07 14:04:41,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 02:04:41" (1/1) ... [2020-07-07 14:04:41,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 14:04:41,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 14:04:41,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 14:04:41,345 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 14:04:41,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 14:04:41,382 INFO L208 MainTranslator]: Completed translation [2020-07-07 14:04:41,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:04:41 WrapperNode [2020-07-07 14:04:41,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 14:04:41,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 14:04:41,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 14:04:41,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 14:04:41,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:04:41" (1/1) ... [2020-07-07 14:04:41,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:04:41" (1/1) ... [2020-07-07 14:04:41,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:04:41" (1/1) ... [2020-07-07 14:04:41,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:04:41" (1/1) ... [2020-07-07 14:04:41,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:04:41" (1/1) ... [2020-07-07 14:04:41,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:04:41" (1/1) ... [2020-07-07 14:04:41,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:04:41" (1/1) ... [2020-07-07 14:04:41,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 14:04:41,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 14:04:41,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 14:04:41,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 14:04:41,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:04:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 14:04:41,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 14:04:41,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 14:04:41,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 14:04:41,587 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 14:04:41,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 14:04:41,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 14:04:41,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 14:04:41,587 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 14:04:41,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 14:04:41,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 14:04:41,858 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 14:04:41,858 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 14:04:41,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 02:04:41 BoogieIcfgContainer [2020-07-07 14:04:41,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 14:04:41,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 14:04:41,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 14:04:41,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 14:04:41,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 02:04:41" (1/3) ... [2020-07-07 14:04:41,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e6c322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 02:04:41, skipping insertion in model container [2020-07-07 14:04:41,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:04:41" (2/3) ... [2020-07-07 14:04:41,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e6c322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 02:04:41, skipping insertion in model container [2020-07-07 14:04:41,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 02:04:41" (3/3) ... [2020-07-07 14:04:41,874 INFO L109 eAbstractionObserver]: Analyzing ICFG mod3.c [2020-07-07 14:04:41,884 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 14:04:41,894 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 14:04:41,912 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 14:04:41,940 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 14:04:41,941 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 14:04:41,941 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 14:04:41,941 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 14:04:41,942 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 14:04:41,942 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 14:04:41,942 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 14:04:41,943 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 14:04:41,960 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-07-07 14:04:41,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-07 14:04:41,972 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:04:41,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:04:41,975 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:04:41,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:04:41,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1436140310, now seen corresponding path program 1 times [2020-07-07 14:04:41,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:04:41,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435052692] [2020-07-07 14:04:41,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:04:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:42,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:04:42,138 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:04:42,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435052692] [2020-07-07 14:04:42,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:04:42,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-07 14:04:42,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540079800] [2020-07-07 14:04:42,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-07 14:04:42,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:04:42,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-07 14:04:42,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-07 14:04:42,175 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-07-07 14:04:42,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:04:42,211 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-07-07 14:04:42,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-07 14:04:42,214 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-07 14:04:42,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:04:42,226 INFO L225 Difference]: With dead ends: 50 [2020-07-07 14:04:42,227 INFO L226 Difference]: Without dead ends: 30 [2020-07-07 14:04:42,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-07 14:04:42,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-07 14:04:42,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-07 14:04:42,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-07 14:04:42,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-07-07 14:04:42,290 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2020-07-07 14:04:42,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:04:42,291 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-07-07 14:04:42,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-07 14:04:42,291 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-07-07 14:04:42,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-07 14:04:42,292 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:04:42,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:04:42,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 14:04:42,293 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:04:42,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:04:42,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1309792647, now seen corresponding path program 1 times [2020-07-07 14:04:42,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:04:42,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518957528] [2020-07-07 14:04:42,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:04:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:42,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:04:42,478 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:04:42,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518957528] [2020-07-07 14:04:42,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:04:42,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 14:04:42,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689233494] [2020-07-07 14:04:42,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 14:04:42,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:04:42,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 14:04:42,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 14:04:42,482 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 3 states. [2020-07-07 14:04:42,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:04:42,531 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-07-07 14:04:42,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 14:04:42,532 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-07-07 14:04:42,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:04:42,535 INFO L225 Difference]: With dead ends: 54 [2020-07-07 14:04:42,535 INFO L226 Difference]: Without dead ends: 47 [2020-07-07 14:04:42,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 14:04:42,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-07-07 14:04:42,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 32. [2020-07-07 14:04:42,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-07 14:04:42,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-07-07 14:04:42,550 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 14 [2020-07-07 14:04:42,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:04:42,551 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-07-07 14:04:42,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 14:04:42,551 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-07-07 14:04:42,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-07 14:04:42,553 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:04:42,553 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:04:42,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 14:04:42,554 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:04:42,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:04:42,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1704587139, now seen corresponding path program 1 times [2020-07-07 14:04:42,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:04:42,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712794676] [2020-07-07 14:04:42,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:04:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:43,097 ERROR L253 erpolLogProxyWrapper]: Interpolant 8 not inductive [2020-07-07 14:04:43,677 ERROR L253 erpolLogProxyWrapper]: Interpolant 17 not inductive [2020-07-07 14:04:43,679 ERROR L276 FreeRefinementEngine]: Caught unknown exception: generated interpolants did not pass sanity check [2020-07-07 14:04:43,680 WARN L341 FreeRefinementEngine]: Global settings require throwing the following exception [2020-07-07 14:04:43,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 14:04:43,683 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:222) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:884) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:385) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:332) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:332) 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:337) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:239) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:108) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolantsCraigNested(Interpolator.java:146) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolants(Interpolator.java:102) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:266) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) 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:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) 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:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-07 14:04:43,694 INFO L168 Benchmark]: Toolchain (without parser) took 2626.27 ms. Allocated memory was 143.7 MB in the beginning and 231.2 MB in the end (delta: 87.6 MB). Free memory was 102.2 MB in the beginning and 134.6 MB in the end (delta: -32.4 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. [2020-07-07 14:04:43,697 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 143.7 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 14:04:43,699 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.93 ms. Allocated memory is still 143.7 MB. Free memory was 101.9 MB in the beginning and 92.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-07 14:04:43,703 INFO L168 Benchmark]: Boogie Preprocessor took 134.43 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 92.4 MB in the beginning and 180.1 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-07-07 14:04:43,705 INFO L168 Benchmark]: RCFGBuilder took 344.96 ms. Allocated memory is still 201.3 MB. Free memory was 180.1 MB in the beginning and 166.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-07-07 14:04:43,707 INFO L168 Benchmark]: TraceAbstraction took 1823.78 ms. Allocated memory was 201.3 MB in the beginning and 231.2 MB in the end (delta: 29.9 MB). Free memory was 166.1 MB in the beginning and 134.6 MB in the end (delta: 31.5 MB). Peak memory consumption was 89.2 MB. Max. memory is 7.1 GB. [2020-07-07 14:04:43,721 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 143.7 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 316.93 ms. Allocated memory is still 143.7 MB. Free memory was 101.9 MB in the beginning and 92.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.43 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 92.4 MB in the beginning and 180.1 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 344.96 ms. Allocated memory is still 201.3 MB. Free memory was 180.1 MB in the beginning and 166.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1823.78 ms. Allocated memory was 201.3 MB in the beginning and 231.2 MB in the end (delta: 29.9 MB). Free memory was 166.1 MB in the beginning and 134.6 MB in the end (delta: 31.5 MB). Peak memory consumption was 89.2 MB. Max. memory is 7.1 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:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...