/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/large_const.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:55:25,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:55:25,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:55:25,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 18:55:25,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:55:25,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:55:25,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:55:25,986 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:55:26,000 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:55:26,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:55:26,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:55:26,003 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:55:26,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:55:26,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:55:26,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:55:26,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:55:26,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:55:26,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:55:26,005 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:55:26,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:55:26,005 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:55:26,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:55:26,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:55:26,006 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:55:26,006 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:55:26,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:55:26,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:55:26,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:55:26,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:55:26,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:55:26,007 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:55:26,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:55:26,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:55:26,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:55:26,448 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:55:26,449 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:55:26,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const.i [2021-02-23 18:55:26,544 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7a67b1d2/1ddfd03979ba41f0b3640233aa377ea6/FLAGb173585fc [2021-02-23 18:55:27,213 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:55:27,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i [2021-02-23 18:55:27,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7a67b1d2/1ddfd03979ba41f0b3640233aa377ea6/FLAGb173585fc [2021-02-23 18:55:27,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7a67b1d2/1ddfd03979ba41f0b3640233aa377ea6 [2021-02-23 18:55:27,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:55:27,603 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:55:27,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:55:27,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:55:27,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:55:27,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:55:27" (1/1) ... [2021-02-23 18:55:27,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@235a7165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:27, skipping insertion in model container [2021-02-23 18:55:27,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:55:27" (1/1) ... [2021-02-23 18:55:27,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:55:27,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:55:27,798 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i[893,906] [2021-02-23 18:55:27,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:55:27,824 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:55:27,840 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i[893,906] [2021-02-23 18:55:27,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:55:27,862 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:55:27,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:27 WrapperNode [2021-02-23 18:55:27,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:55:27,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:55:27,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:55:27,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:55:27,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:27" (1/1) ... [2021-02-23 18:55:27,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:27" (1/1) ... [2021-02-23 18:55:27,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:27" (1/1) ... [2021-02-23 18:55:27,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:27" (1/1) ... [2021-02-23 18:55:27,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:27" (1/1) ... [2021-02-23 18:55:27,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:27" (1/1) ... [2021-02-23 18:55:27,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:27" (1/1) ... [2021-02-23 18:55:27,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:55:27,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:55:27,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:55:27,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:55:27,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:27" (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 [2021-02-23 18:55:28,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:55:28,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:55:28,013 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:55:28,013 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:55:28,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:55:28,014 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:55:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:55:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:55:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 18:55:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 18:55:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:55:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:55:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:55:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:55:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:55:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:55:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:55:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:55:28,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:55:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:55:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:55:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:55:28,462 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:55:28,463 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 18:55:28,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:55:28 BoogieIcfgContainer [2021-02-23 18:55:28,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:55:28,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:55:28,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:55:28,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:55:28,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:55:27" (1/3) ... [2021-02-23 18:55:28,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1eadc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:55:28, skipping insertion in model container [2021-02-23 18:55:28,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:27" (2/3) ... [2021-02-23 18:55:28,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1eadc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:55:28, skipping insertion in model container [2021-02-23 18:55:28,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:55:28" (3/3) ... [2021-02-23 18:55:28,475 INFO L111 eAbstractionObserver]: Analyzing ICFG large_const.i [2021-02-23 18:55:28,483 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:55:28,488 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:55:28,509 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:55:28,537 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:55:28,538 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:55:28,538 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:55:28,538 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:55:28,538 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:55:28,538 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:55:28,538 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:55:28,539 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:55:28,557 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2021-02-23 18:55:28,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-23 18:55:28,568 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:55:28,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:55:28,569 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:55:28,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:55:28,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1417410242, now seen corresponding path program 1 times [2021-02-23 18:55:28,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:55:28,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933810861] [2021-02-23 18:55:28,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:55:28,678 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:55:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:28,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:28,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:28,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:28,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:28,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:55:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:28,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:28,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:28,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:55:28,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933810861] [2021-02-23 18:55:28,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:55:28,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:55:28,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452513747] [2021-02-23 18:55:28,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:55:28,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:55:28,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:55:28,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:55:28,986 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 3 states. [2021-02-23 18:55:29,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:55:29,104 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2021-02-23 18:55:29,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:55:29,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2021-02-23 18:55:29,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:55:29,116 INFO L225 Difference]: With dead ends: 83 [2021-02-23 18:55:29,117 INFO L226 Difference]: Without dead ends: 55 [2021-02-23 18:55:29,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:55:29,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-02-23 18:55:29,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-02-23 18:55:29,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-02-23 18:55:29,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2021-02-23 18:55:29,247 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 34 [2021-02-23 18:55:29,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:55:29,248 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2021-02-23 18:55:29,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:55:29,248 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2021-02-23 18:55:29,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-23 18:55:29,253 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:55:29,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:55:29,254 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:55:29,254 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:55:29,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:55:29,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1385213215, now seen corresponding path program 1 times [2021-02-23 18:55:29,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:55:29,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441570847] [2021-02-23 18:55:29,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:55:29,272 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:55:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:29,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:29,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:29,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:29,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:29,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:29,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:29,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:29,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:55:29,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:29,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:29,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:55:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:29,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:29,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:29,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:55:29,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441570847] [2021-02-23 18:55:29,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:55:29,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 18:55:29,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440244498] [2021-02-23 18:55:29,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 18:55:29,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:55:29,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 18:55:29,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:55:29,572 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 6 states. [2021-02-23 18:55:29,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:55:29,970 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2021-02-23 18:55:29,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:55:29,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2021-02-23 18:55:29,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:55:29,976 INFO L225 Difference]: With dead ends: 74 [2021-02-23 18:55:29,976 INFO L226 Difference]: Without dead ends: 58 [2021-02-23 18:55:29,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-02-23 18:55:29,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-02-23 18:55:30,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-02-23 18:55:30,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-23 18:55:30,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2021-02-23 18:55:30,028 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 34 [2021-02-23 18:55:30,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:55:30,029 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2021-02-23 18:55:30,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 18:55:30,030 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2021-02-23 18:55:30,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-23 18:55:30,035 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:55:30,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:55:30,035 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:55:30,036 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:55:30,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:55:30,037 INFO L82 PathProgramCache]: Analyzing trace with hash -359389512, now seen corresponding path program 1 times [2021-02-23 18:55:30,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:55:30,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845790008] [2021-02-23 18:55:30,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:55:30,074 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:55:30,081 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:55:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:30,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:30,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:30,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:30,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:30,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:30,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:55:30,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:30,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:30,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:30,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:30,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:30,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:30,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:30,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:30,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:55:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:30,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:30,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:30,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:55:30,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845790008] [2021-02-23 18:55:30,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:55:30,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 18:55:30,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295805890] [2021-02-23 18:55:30,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 18:55:30,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:55:30,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 18:55:30,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-23 18:55:30,228 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 8 states. [2021-02-23 18:55:30,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:55:30,692 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2021-02-23 18:55:30,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 18:55:30,692 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2021-02-23 18:55:30,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:55:30,694 INFO L225 Difference]: With dead ends: 95 [2021-02-23 18:55:30,695 INFO L226 Difference]: Without dead ends: 93 [2021-02-23 18:55:30,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-02-23 18:55:30,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-02-23 18:55:30,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 73. [2021-02-23 18:55:30,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-23 18:55:30,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2021-02-23 18:55:30,718 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 44 [2021-02-23 18:55:30,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:55:30,719 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2021-02-23 18:55:30,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 18:55:30,719 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2021-02-23 18:55:30,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-23 18:55:30,721 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:55:30,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:55:30,721 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:55:30,721 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:55:30,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:55:30,722 INFO L82 PathProgramCache]: Analyzing trace with hash 103516029, now seen corresponding path program 1 times [2021-02-23 18:55:30,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:55:30,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527320150] [2021-02-23 18:55:30,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:55:30,731 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:55:30,733 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:55:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:30,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:30,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:30,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:30,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:30,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:30,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:55:30,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:30,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:30,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:30,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:30,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:30,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:30,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:30,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:30,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:55:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:30,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:30,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:30,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:55:30,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527320150] [2021-02-23 18:55:30,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:55:30,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 18:55:30,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207748788] [2021-02-23 18:55:30,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 18:55:30,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:55:30,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 18:55:30,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-23 18:55:30,887 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 8 states. [2021-02-23 18:55:31,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:55:31,324 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2021-02-23 18:55:31,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 18:55:31,325 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2021-02-23 18:55:31,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:55:31,328 INFO L225 Difference]: With dead ends: 112 [2021-02-23 18:55:31,329 INFO L226 Difference]: Without dead ends: 110 [2021-02-23 18:55:31,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-02-23 18:55:31,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-02-23 18:55:31,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 92. [2021-02-23 18:55:31,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-02-23 18:55:31,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2021-02-23 18:55:31,392 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 45 [2021-02-23 18:55:31,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:55:31,393 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2021-02-23 18:55:31,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 18:55:31,394 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2021-02-23 18:55:31,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-23 18:55:31,400 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:55:31,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:55:31,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:55:31,401 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:55:31,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:55:31,402 INFO L82 PathProgramCache]: Analyzing trace with hash -90416355, now seen corresponding path program 1 times [2021-02-23 18:55:31,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:55:31,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741271197] [2021-02-23 18:55:31,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:55:31,415 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:55:31,424 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:55:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:31,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:31,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:31,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:31,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:31,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:31,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:55:31,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:31,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:31,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:31,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:31,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:31,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:31,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:31,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:31,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:55:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:31,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:31,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:31,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:55:31,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741271197] [2021-02-23 18:55:31,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:55:31,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 18:55:31,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267023847] [2021-02-23 18:55:31,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 18:55:31,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:55:31,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 18:55:31,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-23 18:55:31,562 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 8 states. [2021-02-23 18:55:31,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:55:31,997 INFO L93 Difference]: Finished difference Result 123 states and 136 transitions. [2021-02-23 18:55:31,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 18:55:31,997 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2021-02-23 18:55:31,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:55:31,999 INFO L225 Difference]: With dead ends: 123 [2021-02-23 18:55:31,999 INFO L226 Difference]: Without dead ends: 121 [2021-02-23 18:55:32,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-02-23 18:55:32,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-02-23 18:55:32,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 104. [2021-02-23 18:55:32,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2021-02-23 18:55:32,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 117 transitions. [2021-02-23 18:55:32,028 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 117 transitions. Word has length 45 [2021-02-23 18:55:32,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:55:32,028 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 117 transitions. [2021-02-23 18:55:32,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 18:55:32,029 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 117 transitions. [2021-02-23 18:55:32,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-23 18:55:32,030 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:55:32,030 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:55:32,030 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 18:55:32,030 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:55:32,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:55:32,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1788729638, now seen corresponding path program 1 times [2021-02-23 18:55:32,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:55:32,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985002449] [2021-02-23 18:55:32,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:55:32,037 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:55:32,038 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:55:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:32,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:32,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:32,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:32,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:32,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:32,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:55:32,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:32,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:32,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:32,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:32,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:32,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:32,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:32,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:32,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:32,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:32,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:32,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:32,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:55:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:32,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:32,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:32,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-23 18:55:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:32,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:32,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:32,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:55:32,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985002449] [2021-02-23 18:55:32,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:55:32,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 18:55:32,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936637921] [2021-02-23 18:55:32,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 18:55:32,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:55:32,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 18:55:32,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 18:55:32,183 INFO L87 Difference]: Start difference. First operand 104 states and 117 transitions. Second operand 10 states. [2021-02-23 18:55:32,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:55:32,661 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2021-02-23 18:55:32,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 18:55:32,662 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2021-02-23 18:55:32,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:55:32,663 INFO L225 Difference]: With dead ends: 136 [2021-02-23 18:55:32,664 INFO L226 Difference]: Without dead ends: 134 [2021-02-23 18:55:32,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-02-23 18:55:32,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-02-23 18:55:32,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 117. [2021-02-23 18:55:32,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2021-02-23 18:55:32,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 130 transitions. [2021-02-23 18:55:32,705 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 130 transitions. Word has length 56 [2021-02-23 18:55:32,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:55:32,706 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 130 transitions. [2021-02-23 18:55:32,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 18:55:32,706 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 130 transitions. [2021-02-23 18:55:32,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-02-23 18:55:32,707 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:55:32,707 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:55:32,707 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 18:55:32,707 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:55:32,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:55:32,708 INFO L82 PathProgramCache]: Analyzing trace with hash -871975098, now seen corresponding path program 1 times [2021-02-23 18:55:32,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:55:32,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988851576] [2021-02-23 18:55:32,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:55:32,719 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:55:32,721 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:55:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:32,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:32,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:32,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:32,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:32,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:32,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:32,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:32,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:32,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:32,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:32,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:32,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:32,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:55:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:32,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:32,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:55:32,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988851576] [2021-02-23 18:55:32,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:55:32,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 18:55:32,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833068395] [2021-02-23 18:55:32,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 18:55:32,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:55:32,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 18:55:32,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 18:55:32,803 INFO L87 Difference]: Start difference. First operand 117 states and 130 transitions. Second operand 7 states. [2021-02-23 18:55:33,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:55:33,040 INFO L93 Difference]: Finished difference Result 157 states and 173 transitions. [2021-02-23 18:55:33,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 18:55:33,041 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2021-02-23 18:55:33,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:55:33,042 INFO L225 Difference]: With dead ends: 157 [2021-02-23 18:55:33,042 INFO L226 Difference]: Without dead ends: 77 [2021-02-23 18:55:33,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-02-23 18:55:33,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-02-23 18:55:33,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2021-02-23 18:55:33,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-23 18:55:33,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2021-02-23 18:55:33,068 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 55 [2021-02-23 18:55:33,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:55:33,069 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2021-02-23 18:55:33,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 18:55:33,069 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2021-02-23 18:55:33,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-23 18:55:33,070 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:55:33,070 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:55:33,071 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 18:55:33,071 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:55:33,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:55:33,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1996932501, now seen corresponding path program 1 times [2021-02-23 18:55:33,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:55:33,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294385287] [2021-02-23 18:55:33,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:55:33,079 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:55:33,082 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:55:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:33,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:33,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:33,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:33,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:33,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:33,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:55:33,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:33,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:33,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:33,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:33,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:33,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:33,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:33,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:33,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:33,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:33,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:33,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:33,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:55:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:33,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:33,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:33,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-23 18:55:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:33,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:33,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:33,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:55:33,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294385287] [2021-02-23 18:55:33,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:55:33,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 18:55:33,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722554806] [2021-02-23 18:55:33,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 18:55:33,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:55:33,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 18:55:33,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 18:55:33,239 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 10 states. [2021-02-23 18:55:33,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:55:33,687 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2021-02-23 18:55:33,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 18:55:33,687 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2021-02-23 18:55:33,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:55:33,689 INFO L225 Difference]: With dead ends: 103 [2021-02-23 18:55:33,689 INFO L226 Difference]: Without dead ends: 101 [2021-02-23 18:55:33,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-02-23 18:55:33,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-02-23 18:55:33,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 76. [2021-02-23 18:55:33,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-23 18:55:33,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2021-02-23 18:55:33,707 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 57 [2021-02-23 18:55:33,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:55:33,708 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2021-02-23 18:55:33,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 18:55:33,708 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2021-02-23 18:55:33,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-23 18:55:33,709 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:55:33,709 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:55:33,709 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 18:55:33,709 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:55:33,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:55:33,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1705614859, now seen corresponding path program 1 times [2021-02-23 18:55:33,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:55:33,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144641208] [2021-02-23 18:55:33,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:55:33,716 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:55:33,717 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:55:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:33,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:33,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:33,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:33,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:33,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:33,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:55:33,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:33,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:33,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:33,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:33,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:33,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:33,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:33,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:33,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:33,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:33,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:33,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:33,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:55:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:33,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:33,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:33,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-23 18:55:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:33,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:33,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:33,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:55:33,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144641208] [2021-02-23 18:55:33,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:55:33,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 18:55:33,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125468618] [2021-02-23 18:55:33,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 18:55:33,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:55:33,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 18:55:33,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 18:55:33,833 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 10 states. [2021-02-23 18:55:34,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:55:34,277 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2021-02-23 18:55:34,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 18:55:34,277 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2021-02-23 18:55:34,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:55:34,278 INFO L225 Difference]: With dead ends: 101 [2021-02-23 18:55:34,279 INFO L226 Difference]: Without dead ends: 99 [2021-02-23 18:55:34,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-02-23 18:55:34,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-02-23 18:55:34,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 74. [2021-02-23 18:55:34,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-23 18:55:34,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2021-02-23 18:55:34,295 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 57 [2021-02-23 18:55:34,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:55:34,295 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2021-02-23 18:55:34,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 18:55:34,296 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2021-02-23 18:55:34,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-02-23 18:55:34,296 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:55:34,297 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:55:34,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 18:55:34,297 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:55:34,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:55:34,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1141287276, now seen corresponding path program 2 times [2021-02-23 18:55:34,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:55:34,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336833433] [2021-02-23 18:55:34,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:55:34,304 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:55:34,305 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:55:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:34,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:34,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:34,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:34,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:34,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:34,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:55:34,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:34,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:55:34,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:34,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:34,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:34,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:34,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:55:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:34,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:34,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:34,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-23 18:55:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:34,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:34,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:34,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-02-23 18:55:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:34,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:34,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:55:34,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336833433] [2021-02-23 18:55:34,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:55:34,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 18:55:34,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38382986] [2021-02-23 18:55:34,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 18:55:34,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:55:34,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 18:55:34,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 18:55:34,409 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand 7 states. [2021-02-23 18:55:34,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:55:34,599 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2021-02-23 18:55:34,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 18:55:34,600 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2021-02-23 18:55:34,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:55:34,600 INFO L225 Difference]: With dead ends: 74 [2021-02-23 18:55:34,601 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 18:55:34,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-02-23 18:55:34,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 18:55:34,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 18:55:34,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 18:55:34,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 18:55:34,602 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 68 [2021-02-23 18:55:34,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:55:34,603 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 18:55:34,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 18:55:34,603 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 18:55:34,603 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 18:55:34,603 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 18:55:34,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 18:55:36,515 WARN L202 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 34 [2021-02-23 18:55:36,665 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-23 18:55:36,665 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-23 18:55:36,665 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-23 18:55:36,665 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-23 18:55:36,665 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-23 18:55:36,666 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 18:55:36,666 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 18:55:36,666 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-23 18:55:36,666 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-23 18:55:36,666 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-23 18:55:36,666 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-23 18:55:36,666 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-02-23 18:55:36,667 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-23 18:55:36,667 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 18:55:36,667 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 18:55:36,667 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 18:55:36,667 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 18:55:36,667 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 18:55:36,667 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-23 18:55:36,668 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-23 18:55:36,669 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-23 18:55:36,669 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-23 18:55:36,669 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-23 18:55:36,669 INFO L185 CegarLoopUtils]: At program point L35-2(line 35) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (= |main_#t~post4| 0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,669 INFO L185 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,669 INFO L192 CegarLoopUtils]: At program point L31-1(line 31) the Hoare annotation is: true [2021-02-23 18:55:36,670 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0)) [2021-02-23 18:55:36,670 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 24 52) the Hoare annotation is: true [2021-02-23 18:55:36,670 INFO L185 CegarLoopUtils]: At program point L48(line 48) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~j~0 0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (= |main_#t~post6| 0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,670 INFO L185 CegarLoopUtils]: At program point L48-1(line 48) the Hoare annotation is: (and (<= main_~n~0 main_~j~0) (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (= |main_#t~post6| 0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,670 INFO L185 CegarLoopUtils]: At program point L40(lines 40 43) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,671 INFO L185 CegarLoopUtils]: At program point L40-2(lines 34 44) the Hoare annotation is: (let ((.cse0 (<= 4000 main_~c1~0)) (.cse1 (<= 2000 main_~c2~0)) (.cse2 (<= 10000 main_~c3~0))) (or (and .cse0 (= main_~k~0 0) (= main_~i~0 0) .cse1 .cse2) (and .cse0 (<= 1 main_~i~0) (<= 2000 main_~k~0) .cse1 (<= main_~n~0 1) .cse2))) [2021-02-23 18:55:36,671 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,671 INFO L185 CegarLoopUtils]: At program point L36-1(line 36) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,671 INFO L185 CegarLoopUtils]: At program point L36-2(line 36) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,671 INFO L185 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,671 INFO L185 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,672 INFO L185 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,672 INFO L192 CegarLoopUtils]: At program point L24(lines 24 52) the Hoare annotation is: true [2021-02-23 18:55:36,672 INFO L185 CegarLoopUtils]: At program point L49(line 49) the Hoare annotation is: (and (<= main_~n~0 main_~j~0) (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,672 INFO L185 CegarLoopUtils]: At program point L49-1(line 49) the Hoare annotation is: (and (<= main_~n~0 main_~j~0) (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= 2000 |main_#t~post7|) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,672 INFO L185 CegarLoopUtils]: At program point L49-2(line 49) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= main_~n~0 main_~j~0) (<= 1 main_~i~0) (<= 1999 main_~k~0) (<= 2000 |main_#t~post7|) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,672 INFO L185 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,673 INFO L185 CegarLoopUtils]: At program point L37(line 37) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,673 INFO L192 CegarLoopUtils]: At program point L37-1(line 37) the Hoare annotation is: true [2021-02-23 18:55:36,673 INFO L185 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,673 INFO L185 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,673 INFO L185 CegarLoopUtils]: At program point L29-1(line 29) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,673 INFO L185 CegarLoopUtils]: At program point L29-2(line 29) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,673 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-23 18:55:36,674 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 24 52) the Hoare annotation is: true [2021-02-23 18:55:36,676 INFO L185 CegarLoopUtils]: At program point L46-2(lines 46 50) the Hoare annotation is: (let ((.cse0 (<= 4000 main_~c1~0)) (.cse2 (<= 1 main_~i~0)) (.cse4 (<= main_~n~0 1)) (.cse3 (<= 2000 main_~c2~0)) (.cse5 (<= 10000 main_~c3~0)) (.cse1 (= main_~j~0 0))) (or (and .cse0 .cse1 (<= 2000 main_~k~0) .cse2 .cse3 .cse4 .cse5) (and (<= main_~n~0 main_~j~0) .cse0 .cse2 (<= 1999 main_~k~0) .cse4 .cse3 .cse5) (and (<= main_~n~0 0) (= main_~i~0 0) .cse1))) [2021-02-23 18:55:36,676 INFO L192 CegarLoopUtils]: At program point L46-3(lines 46 50) the Hoare annotation is: true [2021-02-23 18:55:36,677 INFO L185 CegarLoopUtils]: At program point L38(lines 38 43) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,677 INFO L185 CegarLoopUtils]: At program point L34-2(lines 34 44) the Hoare annotation is: (or (and (<= main_~n~0 0) (= main_~i~0 0)) (and (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0))) [2021-02-23 18:55:36,677 INFO L185 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,677 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 52) the Hoare annotation is: true [2021-02-23 18:55:36,677 INFO L185 CegarLoopUtils]: At program point L30-1(line 30) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,677 INFO L185 CegarLoopUtils]: At program point L30-2(line 30) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,678 INFO L185 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: (<= 4000 main_~c1~0) [2021-02-23 18:55:36,678 INFO L185 CegarLoopUtils]: At program point L47(line 47) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~j~0 0) (<= 2000 main_~k~0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,678 INFO L185 CegarLoopUtils]: At program point L47-1(line 47) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~j~0 0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,679 INFO L185 CegarLoopUtils]: At program point L43(line 43) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,679 INFO L185 CegarLoopUtils]: At program point L39(line 39) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,680 INFO L185 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (= main_~i~0 0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,680 INFO L185 CegarLoopUtils]: At program point L35-1(line 35) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (= main_~i~0 0) (= |main_#t~post4| 0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-23 18:55:36,680 INFO L185 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-23 18:55:36,680 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-23 18:55:36,680 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-23 18:55:36,680 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 18:55:36,680 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 18:55:36,681 INFO L185 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-23 18:55:36,681 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 18:55:36,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:55:36 BoogieIcfgContainer [2021-02-23 18:55:36,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:55:36,720 INFO L168 Benchmark]: Toolchain (without parser) took 9125.76 ms. Allocated memory was 156.2 MB in the beginning and 280.0 MB in the end (delta: 123.7 MB). Free memory was 132.5 MB in the beginning and 127.2 MB in the end (delta: 5.3 MB). Peak memory consumption was 129.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:55:36,720 INFO L168 Benchmark]: CDTParser took 1.15 ms. Allocated memory is still 156.2 MB. Free memory is still 130.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:55:36,721 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.86 ms. Allocated memory is still 156.2 MB. Free memory was 131.5 MB in the beginning and 121.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:55:36,724 INFO L168 Benchmark]: Boogie Preprocessor took 39.11 ms. Allocated memory is still 156.2 MB. Free memory was 121.7 MB in the beginning and 120.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:55:36,725 INFO L168 Benchmark]: RCFGBuilder took 560.41 ms. Allocated memory is still 156.2 MB. Free memory was 120.2 MB in the beginning and 133.8 MB in the end (delta: -13.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-23 18:55:36,727 INFO L168 Benchmark]: TraceAbstraction took 8247.67 ms. Allocated memory was 156.2 MB in the beginning and 280.0 MB in the end (delta: 123.7 MB). Free memory was 133.3 MB in the beginning and 127.2 MB in the end (delta: 6.1 MB). Peak memory consumption was 130.9 MB. Max. memory is 8.0 GB. [2021-02-23 18:55:36,736 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.15 ms. Allocated memory is still 156.2 MB. Free memory is still 130.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 255.86 ms. Allocated memory is still 156.2 MB. Free memory was 131.5 MB in the beginning and 121.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.11 ms. Allocated memory is still 156.2 MB. Free memory was 121.7 MB in the beginning and 120.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 560.41 ms. Allocated memory is still 156.2 MB. Free memory was 120.2 MB in the beginning and 133.8 MB in the end (delta: -13.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8247.67 ms. Allocated memory was 156.2 MB in the beginning and 280.0 MB in the end (delta: 123.7 MB). Free memory was 133.3 MB in the beginning and 127.2 MB in the end (delta: 6.1 MB). Peak memory consumption was 130.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((4000 <= c1 && k == 0) && i == 0) && 2000 <= c2) && 10000 <= c3) || (((((4000 <= c1 && 1 <= i) && 2000 <= k) && 2000 <= c2) && n <= 1) && 10000 <= c3) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((4000 <= c1 && j == 0) && 2000 <= k) && 1 <= i) && 2000 <= c2) && n <= 1) && 10000 <= c3) || ((((((n <= j && 4000 <= c1) && 1 <= i) && 1999 <= k) && n <= 1) && 2000 <= c2) && 10000 <= c3)) || ((n <= 0 && i == 0) && j == 0) - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 624 SDtfs, 981 SDslu, 459 SDs, 0 SdLazy, 2059 SolverSat, 138 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 158 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 125 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 63 LocationsWithAnnotation, 112 PreInvPairs, 145 NumberOfFragments, 699 HoareAnnotationTreeSize, 112 FomulaSimplifications, 22904 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 63 FomulaSimplificationsInter, 2427 FormulaSimplificationTreeSizeReductionInter, 1.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...