/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/geo3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:45:32,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:45:32,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:45:32,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:45:32,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:45:32,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:45:32,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:45:32,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:45:32,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:45:32,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:45:32,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:45:32,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:45:32,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:45:32,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:45:32,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:45:32,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:45:32,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:45:32,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:45:32,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:45:32,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:45:32,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:45:32,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:45:32,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:45:32,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:45:32,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:45:32,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:45:32,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:45:32,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:45:32,641 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 [2020-09-04 13:45:32,667 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:45:32,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:45:32,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:45:32,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:45:32,669 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:45:32,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:45:32,669 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:45:32,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:45:32,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:45:32,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:45:32,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:45:32,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:45:32,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:45:32,674 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:45:32,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:45:32,674 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:45:32,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:45:32,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:45:32,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:45:32,675 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:45:32,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:45:32,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:45:32,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:45:32,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:45:32,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:45:32,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:45:32,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:45:32,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:45:32,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:45:32,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:45:33,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:45:33,160 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:45:33,165 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:45:33,168 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:45:33,169 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:45:33,170 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo3.c [2020-09-04 13:45:33,258 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ca74a651/bbfdc1be2476441295366348e7aff5fb/FLAG1628852b3 [2020-09-04 13:45:33,824 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:45:33,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/nla-digbench/geo3.c [2020-09-04 13:45:33,832 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ca74a651/bbfdc1be2476441295366348e7aff5fb/FLAG1628852b3 [2020-09-04 13:45:34,158 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ca74a651/bbfdc1be2476441295366348e7aff5fb [2020-09-04 13:45:34,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:45:34,174 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:45:34,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:45:34,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:45:34,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:45:34,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:45:34" (1/1) ... [2020-09-04 13:45:34,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5273b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:34, skipping insertion in model container [2020-09-04 13:45:34,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:45:34" (1/1) ... [2020-09-04 13:45:34,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:45:34,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:45:34,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:45:34,456 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:45:34,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:45:34,495 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:45:34,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:34 WrapperNode [2020-09-04 13:45:34,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:45:34,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:45:34,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:45:34,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:45:34,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:34" (1/1) ... [2020-09-04 13:45:34,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:34" (1/1) ... [2020-09-04 13:45:34,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:34" (1/1) ... [2020-09-04 13:45:34,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:34" (1/1) ... [2020-09-04 13:45:34,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:34" (1/1) ... [2020-09-04 13:45:34,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:34" (1/1) ... [2020-09-04 13:45:34,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:34" (1/1) ... [2020-09-04 13:45:34,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:45:34,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:45:34,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:45:34,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:45:34,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:34" (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 [2020-09-04 13:45:34,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:45:34,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:45:34,702 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:45:34,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:45:34,702 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:45:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:45:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:45:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:45:34,703 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:45:34,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:45:34,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:45:34,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:45:34,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:45:34,935 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:45:34,936 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 13:45:34,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:45:34 BoogieIcfgContainer [2020-09-04 13:45:34,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:45:34,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:45:34,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:45:34,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:45:34,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:45:34" (1/3) ... [2020-09-04 13:45:34,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331c70c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:45:34, skipping insertion in model container [2020-09-04 13:45:34,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:34" (2/3) ... [2020-09-04 13:45:34,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331c70c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:45:34, skipping insertion in model container [2020-09-04 13:45:34,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:45:34" (3/3) ... [2020-09-04 13:45:34,950 INFO L109 eAbstractionObserver]: Analyzing ICFG geo3.c [2020-09-04 13:45:34,963 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:45:34,979 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:45:35,001 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:45:35,032 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:45:35,032 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:45:35,032 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:45:35,032 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:45:35,032 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:45:35,032 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:45:35,033 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:45:35,033 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:45:35,052 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-09-04 13:45:35,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-04 13:45:35,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:45:35,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:45:35,060 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:45:35,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:45:35,067 INFO L82 PathProgramCache]: Analyzing trace with hash -64610451, now seen corresponding path program 1 times [2020-09-04 13:45:35,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:45:35,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659250007] [2020-09-04 13:45:35,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:45:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:35,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:45:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:35,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:45:35,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659250007] [2020-09-04 13:45:35,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:45:35,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-04 13:45:35,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292572301] [2020-09-04 13:45:35,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-04 13:45:35,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:45:35,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-04 13:45:35,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 13:45:35,262 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-09-04 13:45:35,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:45:35,294 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2020-09-04 13:45:35,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-04 13:45:35,296 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-04 13:45:35,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:45:35,309 INFO L225 Difference]: With dead ends: 35 [2020-09-04 13:45:35,310 INFO L226 Difference]: Without dead ends: 15 [2020-09-04 13:45:35,314 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 [2020-09-04 13:45:35,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-09-04 13:45:35,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-09-04 13:45:35,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-09-04 13:45:35,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-09-04 13:45:35,369 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2020-09-04 13:45:35,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:45:35,369 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-09-04 13:45:35,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-04 13:45:35,370 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-09-04 13:45:35,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-04 13:45:35,371 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:45:35,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:45:35,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:45:35,372 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:45:35,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:45:35,372 INFO L82 PathProgramCache]: Analyzing trace with hash -62822991, now seen corresponding path program 1 times [2020-09-04 13:45:35,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:45:35,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77159629] [2020-09-04 13:45:35,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:45:35,384 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:45:35,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [174417958] [2020-09-04 13:45:35,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:45:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:35,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-04 13:45:35,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:45:35,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:45:35,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77159629] [2020-09-04 13:45:35,660 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:45:35,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174417958] [2020-09-04 13:45:35,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:45:35,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:45:35,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866503221] [2020-09-04 13:45:35,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:45:35,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:45:35,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:45:35,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:45:35,665 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-09-04 13:45:35,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:45:35,733 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-09-04 13:45:35,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:45:35,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-04 13:45:35,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:45:35,735 INFO L225 Difference]: With dead ends: 25 [2020-09-04 13:45:35,735 INFO L226 Difference]: Without dead ends: 22 [2020-09-04 13:45:35,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:45:35,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-04 13:45:35,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-04 13:45:35,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-04 13:45:35,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-04 13:45:35,744 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2020-09-04 13:45:35,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:45:35,745 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-04 13:45:35,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:45:35,745 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-04 13:45:35,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-04 13:45:35,746 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:45:35,746 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:45:35,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-09-04 13:45:35,963 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:45:35,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:45:35,964 INFO L82 PathProgramCache]: Analyzing trace with hash 50868238, now seen corresponding path program 1 times [2020-09-04 13:45:35,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:45:35,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799185720] [2020-09-04 13:45:35,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:45:35,978 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:45:35,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887999098] [2020-09-04 13:45:35,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:45:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:36,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 20 conjunts are in the unsatisfiable core [2020-09-04 13:45:36,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:45:36,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:45:36,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799185720] [2020-09-04 13:45:36,189 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:45:36,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887999098] [2020-09-04 13:45:36,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:45:36,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-04 13:45:36,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232683128] [2020-09-04 13:45:36,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 13:45:36,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:45:36,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 13:45:36,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:45:36,192 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 8 states. [2020-09-04 13:45:38,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:45:38,391 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-09-04 13:45:38,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 13:45:38,393 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-09-04 13:45:38,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:45:38,394 INFO L225 Difference]: With dead ends: 32 [2020-09-04 13:45:38,394 INFO L226 Difference]: Without dead ends: 30 [2020-09-04 13:45:38,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-04 13:45:38,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-04 13:45:38,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-04 13:45:38,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-04 13:45:38,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-04 13:45:38,407 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 17 [2020-09-04 13:45:38,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:45:38,408 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-04 13:45:38,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 13:45:38,408 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-04 13:45:38,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-04 13:45:38,410 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:45:38,410 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:45:38,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:45:38,625 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:45:38,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:45:38,626 INFO L82 PathProgramCache]: Analyzing trace with hash 325764102, now seen corresponding path program 1 times [2020-09-04 13:45:38,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:45:38,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338491179] [2020-09-04 13:45:38,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:45:38,637 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:45:38,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1369854986] [2020-09-04 13:45:38,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:45:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:38,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-04 13:45:38,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:45:38,781 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:45:38,871 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-04 13:45:38,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338491179] [2020-09-04 13:45:38,872 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:45:38,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369854986] [2020-09-04 13:45:38,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:45:38,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-04 13:45:38,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659609314] [2020-09-04 13:45:38,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 13:45:38,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:45:38,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 13:45:38,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:45:38,878 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 7 states. [2020-09-04 13:45:43,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:45:43,156 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-09-04 13:45:43,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 13:45:43,156 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-04 13:45:43,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:45:43,159 INFO L225 Difference]: With dead ends: 34 [2020-09-04 13:45:43,159 INFO L226 Difference]: Without dead ends: 27 [2020-09-04 13:45:43,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=23, Invalid=48, Unknown=1, NotChecked=0, Total=72 [2020-09-04 13:45:43,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-04 13:45:43,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-09-04 13:45:43,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-04 13:45:43,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-09-04 13:45:43,168 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 23 [2020-09-04 13:45:43,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:45:43,168 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-09-04 13:45:43,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 13:45:43,168 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-09-04 13:45:43,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-04 13:45:43,169 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:45:43,170 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:45:43,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:45:43,371 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:45:43,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:45:43,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1538749201, now seen corresponding path program 2 times [2020-09-04 13:45:43,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:45:43,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170766324] [2020-09-04 13:45:43,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:45:43,381 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:45:43,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [802705612] [2020-09-04 13:45:43,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:45:43,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-04 13:45:43,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:45:43,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 24 conjunts are in the unsatisfiable core [2020-09-04 13:45:43,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:45:43,627 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 13:45:43,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170766324] [2020-09-04 13:45:43,628 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:45:43,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802705612] [2020-09-04 13:45:43,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:45:43,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-04 13:45:43,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531297665] [2020-09-04 13:45:43,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 13:45:43,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:45:43,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 13:45:43,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 13:45:43,631 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 9 states. [2020-09-04 13:45:50,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:45:50,676 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-09-04 13:45:50,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 13:45:50,677 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-09-04 13:45:50,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:45:50,679 INFO L225 Difference]: With dead ends: 37 [2020-09-04 13:45:50,679 INFO L226 Difference]: Without dead ends: 35 [2020-09-04 13:45:50,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-04 13:45:50,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-04 13:45:50,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-09-04 13:45:50,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-04 13:45:50,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2020-09-04 13:45:50,689 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 24 [2020-09-04 13:45:50,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:45:50,689 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2020-09-04 13:45:50,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 13:45:50,689 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-09-04 13:45:50,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-04 13:45:50,690 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:45:50,690 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:45:50,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:45:50,899 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:45:50,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:45:50,900 INFO L82 PathProgramCache]: Analyzing trace with hash -695576914, now seen corresponding path program 3 times [2020-09-04 13:45:50,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:45:50,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377987823] [2020-09-04 13:45:50,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:45:50,909 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:45:50,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1170278355] [2020-09-04 13:45:50,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:45:50,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-04 13:45:50,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:45:50,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 16 conjunts are in the unsatisfiable core [2020-09-04 13:45:50,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:45:55,561 WARN L193 SmtUtils]: Spent 962.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2020-09-04 13:45:55,570 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:45:55,584 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-09-04 13:45:55,604 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-09-04 13:45:55,613 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-09-04 13:46:11,344 WARN L193 SmtUtils]: Spent 8.49 s on a formula simplification that was a NOOP. DAG size: 35 [2020-09-04 13:46:11,365 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:46:30,723 WARN L193 SmtUtils]: Spent 10.25 s on a formula simplification that was a NOOP. DAG size: 35 [2020-09-04 13:46:32,868 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:46:41,189 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_main_~y~0_BEFORE_CALL_8 Int) (v_main_~z~0_BEFORE_CALL_6 Int) (v_main_~a~0_BEFORE_CALL_8 Int) (v_main_~x~0_BEFORE_CALL_8 Int)) (let ((.cse1 (+ (* v_main_~a~0_BEFORE_CALL_8 (- 1)) v_main_~x~0_BEFORE_CALL_8))) (and (let ((.cse0 (div .cse1 v_main_~z~0_BEFORE_CALL_6))) (= (+ (* .cse0 v_main_~z~0_BEFORE_CALL_6) v_main_~a~0_BEFORE_CALL_8) (+ (* v_main_~z~0_BEFORE_CALL_6 v_main_~a~0_BEFORE_CALL_8 (div v_main_~y~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_6)) .cse0))) (= (mod v_main_~y~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_6) 0) (= (mod .cse1 v_main_~z~0_BEFORE_CALL_6) 0) (not (= (+ (* v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_BEFORE_CALL_8) v_main_~a~0_BEFORE_CALL_8) (+ v_main_~x~0_BEFORE_CALL_8 (* v_main_~y~0_BEFORE_CALL_8 v_main_~a~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_6)))) (not (= v_main_~z~0_BEFORE_CALL_6 0))))) is different from false [2020-09-04 13:46:43,206 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_main_~y~0_BEFORE_CALL_8 Int) (v_main_~z~0_BEFORE_CALL_6 Int) (v_main_~a~0_BEFORE_CALL_8 Int) (v_main_~x~0_BEFORE_CALL_8 Int)) (let ((.cse1 (+ (* v_main_~a~0_BEFORE_CALL_8 (- 1)) v_main_~x~0_BEFORE_CALL_8))) (and (let ((.cse0 (div .cse1 v_main_~z~0_BEFORE_CALL_6))) (= (+ (* .cse0 v_main_~z~0_BEFORE_CALL_6) v_main_~a~0_BEFORE_CALL_8) (+ (* v_main_~z~0_BEFORE_CALL_6 v_main_~a~0_BEFORE_CALL_8 (div v_main_~y~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_6)) .cse0))) (= (mod v_main_~y~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_6) 0) (= (mod .cse1 v_main_~z~0_BEFORE_CALL_6) 0) (not (= (+ (* v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_BEFORE_CALL_8) v_main_~a~0_BEFORE_CALL_8) (+ v_main_~x~0_BEFORE_CALL_8 (* v_main_~y~0_BEFORE_CALL_8 v_main_~a~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_6)))) (not (= v_main_~z~0_BEFORE_CALL_6 0))))) is different from true [2020-09-04 13:46:43,212 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-04 13:46:43,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377987823] [2020-09-04 13:46:43,213 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:46:43,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170278355] [2020-09-04 13:46:43,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:46:43,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-04 13:46:43,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144308939] [2020-09-04 13:46:43,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 13:46:43,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:46:43,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 13:46:43,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=39, Unknown=6, NotChecked=12, Total=72 [2020-09-04 13:46:43,216 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 9 states. [2020-09-04 13:46:48,084 WARN L193 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 38 DAG size of output: 3 [2020-09-04 13:46:59,053 WARN L193 SmtUtils]: Spent 10.76 s on a formula simplification. DAG size of input: 44 DAG size of output: 6 [2020-09-04 13:48:28,030 WARN L193 SmtUtils]: Spent 1.21 m on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-09-04 13:49:06,627 WARN L193 SmtUtils]: Spent 34.38 s on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2020-09-04 13:49:10,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:49:10,776 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-09-04 13:49:10,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 13:49:10,844 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-09-04 13:49:10,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:49:10,845 INFO L225 Difference]: With dead ends: 34 [2020-09-04 13:49:10,845 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 13:49:10,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 168.8s TimeCoverageRelationStatistics Valid=36, Invalid=88, Unknown=12, NotChecked=20, Total=156 [2020-09-04 13:49:10,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 13:49:10,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 13:49:10,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 13:49:10,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 13:49:10,847 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-09-04 13:49:10,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:49:10,847 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 13:49:10,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 13:49:10,847 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 13:49:10,847 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 13:49:11,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-09-04 13:49:11,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 13:49:20,848 WARN L193 SmtUtils]: Spent 9.66 s on a formula simplification. DAG size of input: 41 DAG size of output: 28 [2020-09-04 13:49:54,116 WARN L193 SmtUtils]: Spent 33.26 s on a formula simplification. DAG size of input: 44 DAG size of output: 1 [2020-09-04 13:50:09,199 WARN L193 SmtUtils]: Spent 15.08 s on a formula simplification. DAG size of input: 41 DAG size of output: 28 [2020-09-04 13:50:09,203 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 13:50:09,203 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:50:09,203 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:50:09,203 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 13:50:09,203 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 13:50:09,203 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:50:09,204 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 9 11) no Hoare annotation was computed. [2020-09-04 13:50:09,204 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-04 13:50:09,204 INFO L268 CegarLoopResult]: For program point L10-2(lines 9 11) no Hoare annotation was computed. [2020-09-04 13:50:09,204 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2020-09-04 13:50:09,204 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (let ((.cse0 (= main_~a~0 main_~x~0)) (.cse3 (= main_~z~0 0))) (or (and .cse0 (= main_~y~0 1)) (let ((.cse2 (+ main_~x~0 (* main_~a~0 (- 1))))) (and (let ((.cse1 (div .cse2 main_~z~0))) (= (+ .cse1 (* main_~z~0 main_~a~0 (div main_~y~0 main_~z~0))) (+ (* main_~z~0 .cse1) main_~a~0))) (= (mod .cse2 main_~z~0) 0) (not .cse3) (= (mod main_~y~0 main_~z~0) 0))) (and .cse0 .cse3))) [2020-09-04 13:50:09,204 INFO L268 CegarLoopResult]: For program point L31-1(lines 30 39) no Hoare annotation was computed. [2020-09-04 13:50:09,204 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 19 42) the Hoare annotation is: true [2020-09-04 13:50:09,205 INFO L264 CegarLoopResult]: At program point L30-2(lines 30 39) the Hoare annotation is: (let ((.cse0 (= main_~a~0 main_~x~0)) (.cse3 (= main_~z~0 0))) (or (and .cse0 (= main_~y~0 1)) (let ((.cse2 (+ main_~x~0 (* main_~a~0 (- 1))))) (and (let ((.cse1 (div .cse2 main_~z~0))) (= (+ .cse1 (* main_~z~0 main_~a~0 (div main_~y~0 main_~z~0))) (+ (* main_~z~0 .cse1) main_~a~0))) (= (mod .cse2 main_~z~0) 0) (not .cse3) (= (mod main_~y~0 main_~z~0) 0))) (and .cse0 .cse3))) [2020-09-04 13:50:09,205 INFO L264 CegarLoopResult]: At program point L30-3(lines 30 39) the Hoare annotation is: (= (+ main_~a~0 (* main_~x~0 main_~z~0)) (+ main_~x~0 (* main_~y~0 main_~z~0 main_~a~0))) [2020-09-04 13:50:09,205 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 19 42) no Hoare annotation was computed. [2020-09-04 13:50:09,205 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 19 42) no Hoare annotation was computed. [2020-09-04 13:50:09,205 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-04 13:50:09,205 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 12 18) the Hoare annotation is: true [2020-09-04 13:50:09,206 INFO L268 CegarLoopResult]: For program point L14(lines 14 15) no Hoare annotation was computed. [2020-09-04 13:50:09,206 INFO L268 CegarLoopResult]: For program point L13(lines 13 16) no Hoare annotation was computed. [2020-09-04 13:50:09,206 INFO L268 CegarLoopResult]: For program point L13-2(lines 12 18) no Hoare annotation was computed. [2020-09-04 13:50:09,206 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 12 18) no Hoare annotation was computed. [2020-09-04 13:50:09,206 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-09-04 13:50:09,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:50:09 BoogieIcfgContainer [2020-09-04 13:50:09,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:50:09,231 INFO L168 Benchmark]: Toolchain (without parser) took 275057.50 ms. Allocated memory was 140.5 MB in the beginning and 243.8 MB in the end (delta: 103.3 MB). Free memory was 103.8 MB in the beginning and 168.2 MB in the end (delta: -64.4 MB). Peak memory consumption was 38.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:50:09,232 INFO L168 Benchmark]: CDTParser took 1.39 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:50:09,233 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.99 ms. Allocated memory is still 140.5 MB. Free memory was 103.6 MB in the beginning and 94.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:50:09,234 INFO L168 Benchmark]: Boogie Preprocessor took 113.99 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 94.1 MB in the beginning and 182.5 MB in the end (delta: -88.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:50:09,234 INFO L168 Benchmark]: RCFGBuilder took 329.93 ms. Allocated memory is still 202.9 MB. Free memory was 182.5 MB in the beginning and 169.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:50:09,235 INFO L168 Benchmark]: TraceAbstraction took 274286.84 ms. Allocated memory was 202.9 MB in the beginning and 243.8 MB in the end (delta: 40.9 MB). Free memory was 169.3 MB in the beginning and 168.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 41.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:50:09,240 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.39 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 320.99 ms. Allocated memory is still 140.5 MB. Free memory was 103.6 MB in the beginning and 94.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.99 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 94.1 MB in the beginning and 182.5 MB in the end (delta: -88.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 329.93 ms. Allocated memory is still 202.9 MB. Free memory was 182.5 MB in the beginning and 169.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 274286.84 ms. Allocated memory was 202.9 MB in the beginning and 243.8 MB in the end (delta: 40.9 MB). Free memory was 169.3 MB in the beginning and 168.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 41.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((a == x && y == 1) || ((((x + a * -1) / z + z * a * (y / z) == z * ((x + a * -1) / z) + a && (x + a * -1) % z == 0) && !(z == 0)) && y % z == 0)) || (a == x && z == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 216.0s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 161.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 58.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 57 SDslu, 233 SDs, 0 SdLazy, 189 SolverSat, 13 SolverUnsat, 11 SolverUnknown, 0 SolverNotchecked, 24.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 171.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 15 PreInvPairs, 25 NumberOfFragments, 137 HoareAnnotationTreeSize, 15 FomulaSimplifications, 340 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 232 FormulaSimplificationTreeSizeReductionInter, 58.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 53.0s InterpolantComputationTime, 115 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 109 ConstructedInterpolants, 3 QuantifiedInterpolants, 15529 SizeOfPredicates, 14 NumberOfNonLiveVariables, 285 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 47/63 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...