/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:33:24,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:33:24,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:33:24,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-06 22:33:24,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:33:24,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:33:24,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:33:24,350 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 22:33:24,376 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:33:24,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:33:24,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:33:24,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:33:24,378 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:33:24,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:33:24,378 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:33:24,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:33:24,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:33:24,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:33:24,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:33:24,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:33:24,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:33:24,380 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:33:24,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:33:24,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:33:24,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:33:24,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:33:24,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:33:24,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:33:24,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:33:24,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:33:24,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:33:24,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:33:24,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:33:24,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:33:24,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:33:24,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:33:24,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:33:24,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:33:24,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:33:24,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:33:24,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:33:24,766 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:33:24,767 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:33:24,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2020-11-06 22:33:24,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed3b3cf46/df8d0b35d3c44238916bddf8bece897c/FLAGf844aa79e [2020-11-06 22:33:25,540 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:33:25,541 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2020-11-06 22:33:25,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed3b3cf46/df8d0b35d3c44238916bddf8bece897c/FLAGf844aa79e [2020-11-06 22:33:25,786 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed3b3cf46/df8d0b35d3c44238916bddf8bece897c [2020-11-06 22:33:25,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:33:25,799 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:33:25,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:33:25,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:33:25,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:33:25,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:33:25" (1/1) ... [2020-11-06 22:33:25,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a6a153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:25, skipping insertion in model container [2020-11-06 22:33:25,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:33:25" (1/1) ... [2020-11-06 22:33:25,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:33:25,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:33:26,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:33:26,298 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:33:26,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:33:26,500 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:33:26,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:26 WrapperNode [2020-11-06 22:33:26,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:33:26,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:33:26,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:33:26,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:33:26,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:26" (1/1) ... [2020-11-06 22:33:26,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:26" (1/1) ... [2020-11-06 22:33:26,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:26" (1/1) ... [2020-11-06 22:33:26,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:26" (1/1) ... [2020-11-06 22:33:26,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:26" (1/1) ... [2020-11-06 22:33:26,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:26" (1/1) ... [2020-11-06 22:33:26,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:26" (1/1) ... [2020-11-06 22:33:26,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:33:26,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:33:26,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:33:26,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:33:26,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:33:26,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:33:26,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:33:26,759 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:33:26,760 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-11-06 22:33:26,760 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:33:26,761 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-11-06 22:33:26,761 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:33:26,762 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:33:26,762 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:33:26,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:33:26,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:33:26,763 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-06 22:33:26,763 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:33:26,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:33:26,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:33:26,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:33:26,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:33:26,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:33:26,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:33:28,024 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:33:28,024 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-06 22:33:28,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:33:28 BoogieIcfgContainer [2020-11-06 22:33:28,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:33:28,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:33:28,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:33:28,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:33:28,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:33:25" (1/3) ... [2020-11-06 22:33:28,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15616f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:33:28, skipping insertion in model container [2020-11-06 22:33:28,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:26" (2/3) ... [2020-11-06 22:33:28,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15616f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:33:28, skipping insertion in model container [2020-11-06 22:33:28,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:33:28" (3/3) ... [2020-11-06 22:33:28,037 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label31.c [2020-11-06 22:33:28,054 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:33:28,058 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:33:28,072 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:33:28,101 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:33:28,101 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:33:28,101 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:33:28,101 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:33:28,102 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:33:28,102 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:33:28,102 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:33:28,102 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:33:28,139 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states. [2020-11-06 22:33:28,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-11-06 22:33:28,164 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:33:28,166 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, 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, 1, 1, 1] [2020-11-06 22:33:28,166 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:33:28,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:33:28,173 INFO L82 PathProgramCache]: Analyzing trace with hash -386144477, now seen corresponding path program 1 times [2020-11-06 22:33:28,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:33:28,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927458405] [2020-11-06 22:33:28,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:33:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:28,909 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-06 22:33:28,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:33:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:33:28,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927458405] [2020-11-06 22:33:28,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:33:28,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:33:28,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130874904] [2020-11-06 22:33:28,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:33:28,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:33:28,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:33:28,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:33:29,001 INFO L87 Difference]: Start difference. First operand 211 states. Second operand 5 states. [2020-11-06 22:33:29,168 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-06 22:33:30,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:33:30,928 INFO L93 Difference]: Finished difference Result 562 states and 962 transitions. [2020-11-06 22:33:30,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 22:33:30,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-11-06 22:33:30,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:33:30,946 INFO L225 Difference]: With dead ends: 562 [2020-11-06 22:33:30,946 INFO L226 Difference]: Without dead ends: 287 [2020-11-06 22:33:30,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:33:30,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-06 22:33:31,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 281. [2020-11-06 22:33:31,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-11-06 22:33:31,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 409 transitions. [2020-11-06 22:33:31,037 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 409 transitions. Word has length 99 [2020-11-06 22:33:31,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:33:31,038 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 409 transitions. [2020-11-06 22:33:31,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:33:31,038 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 409 transitions. [2020-11-06 22:33:31,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-11-06 22:33:31,044 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:33:31,044 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1] [2020-11-06 22:33:31,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:33:31,045 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:33:31,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:33:31,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1138815710, now seen corresponding path program 1 times [2020-11-06 22:33:31,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:33:31,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141577110] [2020-11-06 22:33:31,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:33:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:31,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:33:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:31,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:33:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:31,302 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:33:31,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141577110] [2020-11-06 22:33:31,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:33:31,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:33:31,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061948877] [2020-11-06 22:33:31,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 22:33:31,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:33:31,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 22:33:31,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:33:31,306 INFO L87 Difference]: Start difference. First operand 281 states and 409 transitions. Second operand 7 states. [2020-11-06 22:33:33,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:33:33,164 INFO L93 Difference]: Finished difference Result 856 states and 1274 transitions. [2020-11-06 22:33:33,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 22:33:33,169 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-11-06 22:33:33,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:33:33,177 INFO L225 Difference]: With dead ends: 856 [2020-11-06 22:33:33,177 INFO L226 Difference]: Without dead ends: 581 [2020-11-06 22:33:33,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-11-06 22:33:33,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-11-06 22:33:33,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 559. [2020-11-06 22:33:33,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-11-06 22:33:33,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 784 transitions. [2020-11-06 22:33:33,235 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 784 transitions. Word has length 108 [2020-11-06 22:33:33,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:33:33,235 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 784 transitions. [2020-11-06 22:33:33,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 22:33:33,235 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 784 transitions. [2020-11-06 22:33:33,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-11-06 22:33:33,241 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:33:33,241 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 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] [2020-11-06 22:33:33,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:33:33,242 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:33:33,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:33:33,242 INFO L82 PathProgramCache]: Analyzing trace with hash -272510509, now seen corresponding path program 1 times [2020-11-06 22:33:33,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:33:33,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144700090] [2020-11-06 22:33:33,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:33:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:33,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:33:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:33,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:33:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:33,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:33:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:33,581 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-06 22:33:33,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144700090] [2020-11-06 22:33:33,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324689524] [2020-11-06 22:33:33,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:33:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:33,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-06 22:33:33,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:33:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:33:33,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:33:33,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2020-11-06 22:33:33,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745740163] [2020-11-06 22:33:33,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:33:33,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:33:33,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:33:33,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:33:33,964 INFO L87 Difference]: Start difference. First operand 559 states and 784 transitions. Second operand 10 states. [2020-11-06 22:33:34,145 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-06 22:33:34,470 WARN L194 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 90 [2020-11-06 22:33:34,665 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-06 22:33:35,806 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-06 22:33:36,827 WARN L194 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-11-06 22:33:39,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:33:39,201 INFO L93 Difference]: Finished difference Result 2735 states and 4130 transitions. [2020-11-06 22:33:39,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-06 22:33:39,202 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 129 [2020-11-06 22:33:39,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:33:39,240 INFO L225 Difference]: With dead ends: 2735 [2020-11-06 22:33:39,240 INFO L226 Difference]: Without dead ends: 2182 [2020-11-06 22:33:39,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2020-11-06 22:33:39,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2182 states. [2020-11-06 22:33:39,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2182 to 1709. [2020-11-06 22:33:39,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1709 states. [2020-11-06 22:33:39,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2302 transitions. [2020-11-06 22:33:39,402 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2302 transitions. Word has length 129 [2020-11-06 22:33:39,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:33:39,405 INFO L481 AbstractCegarLoop]: Abstraction has 1709 states and 2302 transitions. [2020-11-06 22:33:39,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:33:39,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2302 transitions. [2020-11-06 22:33:39,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-11-06 22:33:39,418 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:33:39,418 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-11-06 22:33:39,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-06 22:33:39,632 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:33:39,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:33:39,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1780321561, now seen corresponding path program 1 times [2020-11-06 22:33:39,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:33:39,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527662484] [2020-11-06 22:33:39,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:33:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:39,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:33:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:39,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:33:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:39,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:33:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:39,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-11-06 22:33:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:39,927 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 53 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-06 22:33:39,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527662484] [2020-11-06 22:33:39,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357571863] [2020-11-06 22:33:39,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:33:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:40,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-06 22:33:40,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:33:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-06 22:33:40,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:33:40,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2020-11-06 22:33:40,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716694637] [2020-11-06 22:33:40,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:33:40,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:33:40,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:33:40,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:33:40,201 INFO L87 Difference]: Start difference. First operand 1709 states and 2302 transitions. Second operand 10 states. [2020-11-06 22:33:40,690 WARN L194 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-11-06 22:33:41,146 WARN L194 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 90 [2020-11-06 22:33:45,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:33:45,484 INFO L93 Difference]: Finished difference Result 5587 states and 7920 transitions. [2020-11-06 22:33:45,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-06 22:33:45,485 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-11-06 22:33:45,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:33:45,507 INFO L225 Difference]: With dead ends: 5587 [2020-11-06 22:33:45,507 INFO L226 Difference]: Without dead ends: 3272 [2020-11-06 22:33:45,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=159, Invalid=597, Unknown=0, NotChecked=0, Total=756 [2020-11-06 22:33:45,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2020-11-06 22:33:45,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 3204. [2020-11-06 22:33:45,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3204 states. [2020-11-06 22:33:45,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3204 states to 3204 states and 3752 transitions. [2020-11-06 22:33:45,685 INFO L78 Accepts]: Start accepts. Automaton has 3204 states and 3752 transitions. Word has length 149 [2020-11-06 22:33:45,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:33:45,685 INFO L481 AbstractCegarLoop]: Abstraction has 3204 states and 3752 transitions. [2020-11-06 22:33:45,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:33:45,685 INFO L276 IsEmpty]: Start isEmpty. Operand 3204 states and 3752 transitions. [2020-11-06 22:33:45,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-11-06 22:33:45,696 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:33:45,696 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-11-06 22:33:45,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:33:45,911 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:33:45,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:33:45,912 INFO L82 PathProgramCache]: Analyzing trace with hash 812810833, now seen corresponding path program 1 times [2020-11-06 22:33:45,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:33:45,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481287494] [2020-11-06 22:33:45,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:33:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:46,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:33:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:46,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:33:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:46,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-06 22:33:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:46,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-11-06 22:33:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:46,227 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 45 proven. 20 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-06 22:33:46,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481287494] [2020-11-06 22:33:46,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063970156] [2020-11-06 22:33:46,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:33:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:46,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-06 22:33:46,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:33:46,588 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-11-06 22:33:46,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:33:46,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2020-11-06 22:33:46,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277068213] [2020-11-06 22:33:46,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:33:46,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:33:46,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:33:46,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:33:46,593 INFO L87 Difference]: Start difference. First operand 3204 states and 3752 transitions. Second operand 3 states. [2020-11-06 22:33:47,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:33:47,347 INFO L93 Difference]: Finished difference Result 8582 states and 10255 transitions. [2020-11-06 22:33:47,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:33:47,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-11-06 22:33:47,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:33:47,376 INFO L225 Difference]: With dead ends: 8582 [2020-11-06 22:33:47,377 INFO L226 Difference]: Without dead ends: 5519 [2020-11-06 22:33:47,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:33:47,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2020-11-06 22:33:47,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 4977. [2020-11-06 22:33:47,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4977 states. [2020-11-06 22:33:47,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4977 states to 4977 states and 5851 transitions. [2020-11-06 22:33:47,566 INFO L78 Accepts]: Start accepts. Automaton has 4977 states and 5851 transitions. Word has length 153 [2020-11-06 22:33:47,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:33:47,567 INFO L481 AbstractCegarLoop]: Abstraction has 4977 states and 5851 transitions. [2020-11-06 22:33:47,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:33:47,567 INFO L276 IsEmpty]: Start isEmpty. Operand 4977 states and 5851 transitions. [2020-11-06 22:33:47,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-11-06 22:33:47,581 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:33:47,581 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-11-06 22:33:47,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:33:47,795 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:33:47,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:33:47,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1568571443, now seen corresponding path program 1 times [2020-11-06 22:33:47,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:33:47,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318721642] [2020-11-06 22:33:47,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:33:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:47,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:33:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:47,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:33:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:47,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-06 22:33:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:48,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-11-06 22:33:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:48,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-06 22:33:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 72 proven. 30 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-11-06 22:33:48,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318721642] [2020-11-06 22:33:48,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283977617] [2020-11-06 22:33:48,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:33:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:48,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-06 22:33:48,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:33:48,332 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-06 22:33:48,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:33:48,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2020-11-06 22:33:48,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032281652] [2020-11-06 22:33:48,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:33:48,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:33:48,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:33:48,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:33:48,335 INFO L87 Difference]: Start difference. First operand 4977 states and 5851 transitions. Second operand 10 states. [2020-11-06 22:33:50,124 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-06 22:33:50,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:33:50,978 INFO L93 Difference]: Finished difference Result 10274 states and 12195 transitions. [2020-11-06 22:33:50,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-06 22:33:50,978 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 183 [2020-11-06 22:33:50,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:33:51,005 INFO L225 Difference]: With dead ends: 10274 [2020-11-06 22:33:51,006 INFO L226 Difference]: Without dead ends: 5301 [2020-11-06 22:33:51,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-11-06 22:33:51,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2020-11-06 22:33:51,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 5279. [2020-11-06 22:33:51,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5279 states. [2020-11-06 22:33:51,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5279 states to 5279 states and 6094 transitions. [2020-11-06 22:33:51,244 INFO L78 Accepts]: Start accepts. Automaton has 5279 states and 6094 transitions. Word has length 183 [2020-11-06 22:33:51,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:33:51,244 INFO L481 AbstractCegarLoop]: Abstraction has 5279 states and 6094 transitions. [2020-11-06 22:33:51,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:33:51,245 INFO L276 IsEmpty]: Start isEmpty. Operand 5279 states and 6094 transitions. [2020-11-06 22:33:51,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-11-06 22:33:51,265 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:33:51,266 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 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, 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] [2020-11-06 22:33:51,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:33:51,481 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:33:51,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:33:51,482 INFO L82 PathProgramCache]: Analyzing trace with hash -789658215, now seen corresponding path program 1 times [2020-11-06 22:33:51,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:33:51,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528901447] [2020-11-06 22:33:51,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:33:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:51,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:33:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:51,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:33:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:51,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-11-06 22:33:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:51,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-06 22:33:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:51,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-11-06 22:33:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:51,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-11-06 22:33:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:51,843 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 139 proven. 38 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-11-06 22:33:51,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528901447] [2020-11-06 22:33:51,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664473027] [2020-11-06 22:33:51,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:33:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:33:52,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-06 22:33:52,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:33:52,108 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 243 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-11-06 22:33:52,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:33:52,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2020-11-06 22:33:52,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343741639] [2020-11-06 22:33:52,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-06 22:33:52,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:33:52,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-06 22:33:52,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-06 22:33:52,111 INFO L87 Difference]: Start difference. First operand 5279 states and 6094 transitions. Second operand 11 states. [2020-11-06 22:33:53,151 WARN L194 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-11-06 22:33:53,626 WARN L194 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-11-06 22:33:54,298 WARN L194 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-11-06 22:33:56,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:33:56,199 INFO L93 Difference]: Finished difference Result 10845 states and 12650 transitions. [2020-11-06 22:33:56,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-06 22:33:56,200 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 229 [2020-11-06 22:33:56,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:33:56,201 INFO L225 Difference]: With dead ends: 10845 [2020-11-06 22:33:56,201 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:33:56,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2020-11-06 22:33:56,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:33:56,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:33:56,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:33:56,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:33:56,222 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 229 [2020-11-06 22:33:56,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:33:56,222 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:33:56,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-06 22:33:56,223 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:33:56,223 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:33:56,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-06 22:33:56,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:33:57,682 WARN L194 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 51 [2020-11-06 22:33:57,946 WARN L194 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 51 [2020-11-06 22:33:58,164 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 35 [2020-11-06 22:33:59,776 WARN L194 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 212 DAG size of output: 54 [2020-11-06 22:33:59,996 WARN L194 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-11-06 22:34:00,307 WARN L194 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-11-06 22:34:00,651 WARN L194 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 37 [2020-11-06 22:34:00,655 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-11-06 22:34:00,656 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-11-06 22:34:00,656 INFO L266 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-11-06 22:34:00,656 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-06 22:34:00,656 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:34:00,657 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= ~a21~0 |old(~a21~0)|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~a8~0 |old(~a8~0)|) (= ~f~0 |old(~f~0)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~a7~0 |old(~a7~0)|) (= ~w~0 |old(~w~0)|) (= ~u~0 |old(~u~0)|) (= ~e~0 |old(~e~0)|) (= ~a16~0 |old(~a16~0)|) (= |#NULL.base| |old(#NULL.base)|) (= ~y~0 |old(~y~0)|) (= |#t~string7.base| |old(#t~string7.base)|) (= ~a17~0 |old(~a17~0)|) (= ~c~0 |old(~c~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= ~z~0 |old(~z~0)|) (= ~a12~0 |old(~a12~0)|) (= |#t~string7.offset| |old(#t~string7.offset)|) (= ~a~0 |old(~a~0)|) (= ~a20~0 |old(~a20~0)|) (= ~x~0 |old(~x~0)|) (= ~d~0 |old(~d~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~v~0 |old(~v~0)|) (= ~b~0 |old(~b~0)|)) [2020-11-06 22:34:00,657 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:34:00,657 INFO L266 CegarLoopResult]: For program point L564-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,657 INFO L266 CegarLoopResult]: For program point L531-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,658 INFO L266 CegarLoopResult]: For program point L498-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,658 INFO L266 CegarLoopResult]: For program point L465-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,658 INFO L266 CegarLoopResult]: For program point L432-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,658 INFO L266 CegarLoopResult]: For program point L399-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,658 INFO L266 CegarLoopResult]: For program point L267(lines 267 392) no Hoare annotation was computed. [2020-11-06 22:34:00,658 INFO L266 CegarLoopResult]: For program point L565(line 565) no Hoare annotation was computed. [2020-11-06 22:34:00,659 INFO L266 CegarLoopResult]: For program point L532(line 532) no Hoare annotation was computed. [2020-11-06 22:34:00,659 INFO L266 CegarLoopResult]: For program point L499(line 499) no Hoare annotation was computed. [2020-11-06 22:34:00,659 INFO L266 CegarLoopResult]: For program point L466(line 466) no Hoare annotation was computed. [2020-11-06 22:34:00,659 INFO L266 CegarLoopResult]: For program point L433(line 433) no Hoare annotation was computed. [2020-11-06 22:34:00,659 INFO L266 CegarLoopResult]: For program point L400(line 400) no Hoare annotation was computed. [2020-11-06 22:34:00,659 INFO L266 CegarLoopResult]: For program point L367(lines 367 392) no Hoare annotation was computed. [2020-11-06 22:34:00,659 INFO L266 CegarLoopResult]: For program point L301(lines 301 392) no Hoare annotation was computed. [2020-11-06 22:34:00,659 INFO L266 CegarLoopResult]: For program point L37(lines 37 392) no Hoare annotation was computed. [2020-11-06 22:34:00,659 INFO L266 CegarLoopResult]: For program point L335(lines 335 392) no Hoare annotation was computed. [2020-11-06 22:34:00,660 INFO L266 CegarLoopResult]: For program point L104(lines 104 392) no Hoare annotation was computed. [2020-11-06 22:34:00,660 INFO L266 CegarLoopResult]: For program point L567-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,660 INFO L266 CegarLoopResult]: For program point L534-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,660 INFO L266 CegarLoopResult]: For program point L501-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,660 INFO L266 CegarLoopResult]: For program point L468-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,660 INFO L266 CegarLoopResult]: For program point L435-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,660 INFO L266 CegarLoopResult]: For program point L402-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,660 INFO L266 CegarLoopResult]: For program point L270(lines 270 392) no Hoare annotation was computed. [2020-11-06 22:34:00,660 INFO L266 CegarLoopResult]: For program point L138(lines 138 392) no Hoare annotation was computed. [2020-11-06 22:34:00,660 INFO L266 CegarLoopResult]: For program point L568(line 568) no Hoare annotation was computed. [2020-11-06 22:34:00,661 INFO L266 CegarLoopResult]: For program point L535(line 535) no Hoare annotation was computed. [2020-11-06 22:34:00,661 INFO L266 CegarLoopResult]: For program point L502(line 502) no Hoare annotation was computed. [2020-11-06 22:34:00,661 INFO L266 CegarLoopResult]: For program point L469(line 469) no Hoare annotation was computed. [2020-11-06 22:34:00,661 INFO L266 CegarLoopResult]: For program point L436(line 436) no Hoare annotation was computed. [2020-11-06 22:34:00,661 INFO L266 CegarLoopResult]: For program point L403(line 403) no Hoare annotation was computed. [2020-11-06 22:34:00,661 INFO L266 CegarLoopResult]: For program point L205(lines 205 392) no Hoare annotation was computed. [2020-11-06 22:34:00,661 INFO L266 CegarLoopResult]: For program point L74(lines 74 392) no Hoare annotation was computed. [2020-11-06 22:34:00,661 INFO L266 CegarLoopResult]: For program point L570-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,662 INFO L266 CegarLoopResult]: For program point L537-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,662 INFO L266 CegarLoopResult]: For program point L504-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,662 INFO L266 CegarLoopResult]: For program point L471-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,662 INFO L266 CegarLoopResult]: For program point L438-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,662 INFO L266 CegarLoopResult]: For program point L405-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,662 INFO L266 CegarLoopResult]: For program point L339(lines 339 392) no Hoare annotation was computed. [2020-11-06 22:34:00,662 INFO L266 CegarLoopResult]: For program point L240(lines 240 392) no Hoare annotation was computed. [2020-11-06 22:34:00,662 INFO L266 CegarLoopResult]: For program point L571(line 571) no Hoare annotation was computed. [2020-11-06 22:34:00,662 INFO L266 CegarLoopResult]: For program point L538(line 538) no Hoare annotation was computed. [2020-11-06 22:34:00,662 INFO L266 CegarLoopResult]: For program point L505(line 505) no Hoare annotation was computed. [2020-11-06 22:34:00,663 INFO L266 CegarLoopResult]: For program point L472(line 472) no Hoare annotation was computed. [2020-11-06 22:34:00,663 INFO L266 CegarLoopResult]: For program point L439(line 439) no Hoare annotation was computed. [2020-11-06 22:34:00,663 INFO L266 CegarLoopResult]: For program point L406(line 406) no Hoare annotation was computed. [2020-11-06 22:34:00,663 INFO L266 CegarLoopResult]: For program point L175(lines 175 392) no Hoare annotation was computed. [2020-11-06 22:34:00,663 INFO L266 CegarLoopResult]: For program point L142(lines 142 392) no Hoare annotation was computed. [2020-11-06 22:34:00,663 INFO L266 CegarLoopResult]: For program point L374(lines 374 392) no Hoare annotation was computed. [2020-11-06 22:34:00,663 INFO L266 CegarLoopResult]: For program point L308(lines 308 392) no Hoare annotation was computed. [2020-11-06 22:34:00,663 INFO L266 CegarLoopResult]: For program point L275(lines 275 392) no Hoare annotation was computed. [2020-11-06 22:34:00,663 INFO L266 CegarLoopResult]: For program point L110(lines 110 392) no Hoare annotation was computed. [2020-11-06 22:34:00,664 INFO L266 CegarLoopResult]: For program point L573-1(lines 573 575) no Hoare annotation was computed. [2020-11-06 22:34:00,664 INFO L266 CegarLoopResult]: For program point L540-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,664 INFO L266 CegarLoopResult]: For program point L507-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,664 INFO L266 CegarLoopResult]: For program point L474-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,664 INFO L266 CegarLoopResult]: For program point L441-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,664 INFO L266 CegarLoopResult]: For program point L408-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,664 INFO L266 CegarLoopResult]: For program point L210(lines 210 392) no Hoare annotation was computed. [2020-11-06 22:34:00,664 INFO L266 CegarLoopResult]: For program point L45(lines 45 392) no Hoare annotation was computed. [2020-11-06 22:34:00,664 INFO L266 CegarLoopResult]: For program point L574(line 574) no Hoare annotation was computed. [2020-11-06 22:34:00,664 INFO L266 CegarLoopResult]: For program point L541(line 541) no Hoare annotation was computed. [2020-11-06 22:34:00,665 INFO L266 CegarLoopResult]: For program point L508(line 508) no Hoare annotation was computed. [2020-11-06 22:34:00,665 INFO L266 CegarLoopResult]: For program point L475(line 475) no Hoare annotation was computed. [2020-11-06 22:34:00,665 INFO L266 CegarLoopResult]: For program point L442(line 442) no Hoare annotation was computed. [2020-11-06 22:34:00,665 INFO L266 CegarLoopResult]: For program point L409(line 409) no Hoare annotation was computed. [2020-11-06 22:34:00,665 INFO L266 CegarLoopResult]: For program point L146(lines 146 392) no Hoare annotation was computed. [2020-11-06 22:34:00,665 INFO L266 CegarLoopResult]: For program point L543-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,665 INFO L266 CegarLoopResult]: For program point L510-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,665 INFO L266 CegarLoopResult]: For program point L477-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,665 INFO L266 CegarLoopResult]: For program point L444-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,666 INFO L266 CegarLoopResult]: For program point L411-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,666 INFO L266 CegarLoopResult]: For program point L180(lines 180 392) no Hoare annotation was computed. [2020-11-06 22:34:00,666 INFO L266 CegarLoopResult]: For program point L544(line 544) no Hoare annotation was computed. [2020-11-06 22:34:00,666 INFO L266 CegarLoopResult]: For program point L511(line 511) no Hoare annotation was computed. [2020-11-06 22:34:00,666 INFO L266 CegarLoopResult]: For program point L478(line 478) no Hoare annotation was computed. [2020-11-06 22:34:00,666 INFO L266 CegarLoopResult]: For program point L445(line 445) no Hoare annotation was computed. [2020-11-06 22:34:00,666 INFO L266 CegarLoopResult]: For program point L412(line 412) no Hoare annotation was computed. [2020-11-06 22:34:00,666 INFO L266 CegarLoopResult]: For program point L379(lines 379 392) no Hoare annotation was computed. [2020-11-06 22:34:00,666 INFO L266 CegarLoopResult]: For program point L280(lines 280 392) no Hoare annotation was computed. [2020-11-06 22:34:00,666 INFO L266 CegarLoopResult]: For program point L247(lines 247 392) no Hoare annotation was computed. [2020-11-06 22:34:00,667 INFO L266 CegarLoopResult]: For program point L82(lines 82 392) no Hoare annotation was computed. [2020-11-06 22:34:00,667 INFO L266 CegarLoopResult]: For program point L347(lines 347 392) no Hoare annotation was computed. [2020-11-06 22:34:00,667 INFO L266 CegarLoopResult]: For program point L314(lines 314 392) no Hoare annotation was computed. [2020-11-06 22:34:00,667 INFO L266 CegarLoopResult]: For program point L116(lines 116 392) no Hoare annotation was computed. [2020-11-06 22:34:00,667 INFO L266 CegarLoopResult]: For program point L546-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,667 INFO L266 CegarLoopResult]: For program point L513-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,667 INFO L266 CegarLoopResult]: For program point L480-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,667 INFO L266 CegarLoopResult]: For program point L447-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,667 INFO L266 CegarLoopResult]: For program point L414-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,668 INFO L266 CegarLoopResult]: For program point L216(lines 216 392) no Hoare annotation was computed. [2020-11-06 22:34:00,668 INFO L266 CegarLoopResult]: For program point L150(lines 150 392) no Hoare annotation was computed. [2020-11-06 22:34:00,668 INFO L266 CegarLoopResult]: For program point L51(lines 51 392) no Hoare annotation was computed. [2020-11-06 22:34:00,668 INFO L266 CegarLoopResult]: For program point calculate_outputFINAL(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,668 INFO L266 CegarLoopResult]: For program point calculate_outputEXIT(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,668 INFO L266 CegarLoopResult]: For program point L547(line 547) no Hoare annotation was computed. [2020-11-06 22:34:00,668 INFO L266 CegarLoopResult]: For program point L514(line 514) no Hoare annotation was computed. [2020-11-06 22:34:00,668 INFO L266 CegarLoopResult]: For program point L481(line 481) no Hoare annotation was computed. [2020-11-06 22:34:00,668 INFO L266 CegarLoopResult]: For program point L448(line 448) no Hoare annotation was computed. [2020-11-06 22:34:00,668 INFO L266 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-11-06 22:34:00,669 INFO L266 CegarLoopResult]: For program point L86(lines 86 392) no Hoare annotation was computed. [2020-11-06 22:34:00,669 INFO L266 CegarLoopResult]: For program point L549-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,669 INFO L266 CegarLoopResult]: For program point L516-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,669 INFO L266 CegarLoopResult]: For program point L483-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,669 INFO L266 CegarLoopResult]: For program point L450-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,669 INFO L266 CegarLoopResult]: For program point L384(lines 384 392) no Hoare annotation was computed. [2020-11-06 22:34:00,669 INFO L266 CegarLoopResult]: For program point L417-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,669 INFO L266 CegarLoopResult]: For program point L318(lines 318 392) no Hoare annotation was computed. [2020-11-06 22:34:00,669 INFO L266 CegarLoopResult]: For program point L252(lines 252 392) no Hoare annotation was computed. [2020-11-06 22:34:00,669 INFO L266 CegarLoopResult]: For program point L550(line 550) no Hoare annotation was computed. [2020-11-06 22:34:00,669 INFO L266 CegarLoopResult]: For program point L517(line 517) no Hoare annotation was computed. [2020-11-06 22:34:00,670 INFO L266 CegarLoopResult]: For program point L484(line 484) no Hoare annotation was computed. [2020-11-06 22:34:00,670 INFO L266 CegarLoopResult]: For program point L451(line 451) no Hoare annotation was computed. [2020-11-06 22:34:00,670 INFO L266 CegarLoopResult]: For program point L418(line 418) no Hoare annotation was computed. [2020-11-06 22:34:00,670 INFO L266 CegarLoopResult]: For program point L220(lines 220 392) no Hoare annotation was computed. [2020-11-06 22:34:00,670 INFO L266 CegarLoopResult]: For program point L154(lines 154 392) no Hoare annotation was computed. [2020-11-06 22:34:00,670 INFO L266 CegarLoopResult]: For program point L121(lines 121 392) no Hoare annotation was computed. [2020-11-06 22:34:00,670 INFO L266 CegarLoopResult]: For program point L320(lines 320 392) no Hoare annotation was computed. [2020-11-06 22:34:00,670 INFO L266 CegarLoopResult]: For program point L188(lines 188 392) no Hoare annotation was computed. [2020-11-06 22:34:00,670 INFO L266 CegarLoopResult]: For program point L56(lines 56 392) no Hoare annotation was computed. [2020-11-06 22:34:00,670 INFO L266 CegarLoopResult]: For program point L552-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,671 INFO L266 CegarLoopResult]: For program point L519-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,671 INFO L266 CegarLoopResult]: For program point L486-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,671 INFO L266 CegarLoopResult]: For program point L453-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,671 INFO L266 CegarLoopResult]: For program point L420-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,671 INFO L266 CegarLoopResult]: For program point L288(lines 288 392) no Hoare annotation was computed. [2020-11-06 22:34:00,671 INFO L266 CegarLoopResult]: For program point L553(line 553) no Hoare annotation was computed. [2020-11-06 22:34:00,671 INFO L266 CegarLoopResult]: For program point L520(line 520) no Hoare annotation was computed. [2020-11-06 22:34:00,671 INFO L266 CegarLoopResult]: For program point L487(line 487) no Hoare annotation was computed. [2020-11-06 22:34:00,672 INFO L262 CegarLoopResult]: At program point L454(line 454) the Hoare annotation is: (let ((.cse2 (not (<= |old(~a16~0)| 4))) (.cse4 (not (<= |old(~a16~0)| 5))) (.cse3 (not (= |old(~a21~0)| 1))) (.cse0 (not (= |old(~a7~0)| 1))) (.cse1 (not (<= |old(~a8~0)| 13))) (.cse5 (not (= |old(~a20~0)| 1))) (.cse6 (not (<= |old(~a17~0)| 0)))) (and (or .cse0 .cse1 .cse2) (or .cse1 .cse2 .cse3) (or (not (= |old(~a17~0)| 1)) .cse4 .cse0 .cse1 .cse5) (or .cse3 (not (= |old(~a7~0)| 0))) (or .cse4 .cse0 .cse6 .cse3) (or .cse0 .cse1 .cse5 .cse6))) [2020-11-06 22:34:00,672 INFO L266 CegarLoopResult]: For program point L421(line 421) no Hoare annotation was computed. [2020-11-06 22:34:00,672 INFO L266 CegarLoopResult]: For program point L454-1(line 454) no Hoare annotation was computed. [2020-11-06 22:34:00,672 INFO L266 CegarLoopResult]: For program point L355(lines 355 392) no Hoare annotation was computed. [2020-11-06 22:34:00,672 INFO L266 CegarLoopResult]: For program point L191(lines 191 392) no Hoare annotation was computed. [2020-11-06 22:34:00,672 INFO L266 CegarLoopResult]: For program point L555-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,672 INFO L266 CegarLoopResult]: For program point L522-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,673 INFO L262 CegarLoopResult]: At program point calculate_outputENTRY(lines 32 577) the Hoare annotation is: (let ((.cse14 (= ~a7~0 |old(~a7~0)|)) (.cse9 (= ~a17~0 |old(~a17~0)|)) (.cse10 (= ~a21~0 1)) (.cse11 (= ~a20~0 |old(~a20~0)|)) (.cse12 (= ~a16~0 |old(~a16~0)|)) (.cse13 (= ~a8~0 |old(~a8~0)|))) (let ((.cse0 (not (<= |old(~a16~0)| 5))) (.cse3 (not (= |old(~a20~0)| 1))) (.cse5 (not (<= |old(~a17~0)| 0))) (.cse6 (and .cse14 .cse9 .cse10 .cse11 .cse12 .cse13)) (.cse7 (not (= |old(~a21~0)| 1))) (.cse1 (not (= |old(~a7~0)| 1))) (.cse2 (not (<= |old(~a8~0)| 13))) (.cse8 (not (<= |old(~a16~0)| 4))) (.cse4 (and .cse14 .cse9 (= ~a21~0 |old(~a21~0)|) .cse11 .cse12 .cse13))) (and (or (not (= |old(~a17~0)| 1)) .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse0 .cse1 .cse5 .cse6 .cse7) (or .cse1 .cse2 .cse3 .cse5 .cse4) (or .cse2 .cse8 .cse6 .cse7) (or (and .cse9 .cse10 .cse11 .cse12 .cse13 (= ~a7~0 0)) .cse7 (not (= |old(~a7~0)| 0))) (or .cse1 .cse2 .cse8 .cse4)))) [2020-11-06 22:34:00,673 INFO L266 CegarLoopResult]: For program point L489-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,673 INFO L266 CegarLoopResult]: For program point L456-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,673 INFO L266 CegarLoopResult]: For program point L423-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,673 INFO L266 CegarLoopResult]: For program point L357(lines 357 392) no Hoare annotation was computed. [2020-11-06 22:34:00,673 INFO L266 CegarLoopResult]: For program point L258(lines 258 392) no Hoare annotation was computed. [2020-11-06 22:34:00,673 INFO L266 CegarLoopResult]: For program point L225(lines 225 392) no Hoare annotation was computed. [2020-11-06 22:34:00,673 INFO L266 CegarLoopResult]: For program point L126(lines 126 392) no Hoare annotation was computed. [2020-11-06 22:34:00,673 INFO L266 CegarLoopResult]: For program point L556(line 556) no Hoare annotation was computed. [2020-11-06 22:34:00,674 INFO L266 CegarLoopResult]: For program point L523(line 523) no Hoare annotation was computed. [2020-11-06 22:34:00,674 INFO L266 CegarLoopResult]: For program point L490(line 490) no Hoare annotation was computed. [2020-11-06 22:34:00,674 INFO L266 CegarLoopResult]: For program point L457(line 457) no Hoare annotation was computed. [2020-11-06 22:34:00,674 INFO L266 CegarLoopResult]: For program point L424(line 424) no Hoare annotation was computed. [2020-11-06 22:34:00,674 INFO L266 CegarLoopResult]: For program point L94(lines 94 392) no Hoare annotation was computed. [2020-11-06 22:34:00,674 INFO L266 CegarLoopResult]: For program point L326(lines 326 392) no Hoare annotation was computed. [2020-11-06 22:34:00,674 INFO L266 CegarLoopResult]: For program point L558-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,674 INFO L266 CegarLoopResult]: For program point L525-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,674 INFO L266 CegarLoopResult]: For program point L492-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,675 INFO L266 CegarLoopResult]: For program point L459-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,675 INFO L266 CegarLoopResult]: For program point L393(lines 393 395) no Hoare annotation was computed. [2020-11-06 22:34:00,675 INFO L266 CegarLoopResult]: For program point L426-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,675 INFO L266 CegarLoopResult]: For program point L393-2(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,675 INFO L266 CegarLoopResult]: For program point L294(lines 294 392) no Hoare annotation was computed. [2020-11-06 22:34:00,675 INFO L266 CegarLoopResult]: For program point L162(lines 162 392) no Hoare annotation was computed. [2020-11-06 22:34:00,675 INFO L266 CegarLoopResult]: For program point L559(line 559) no Hoare annotation was computed. [2020-11-06 22:34:00,675 INFO L266 CegarLoopResult]: For program point L526(line 526) no Hoare annotation was computed. [2020-11-06 22:34:00,675 INFO L266 CegarLoopResult]: For program point L493(line 493) no Hoare annotation was computed. [2020-11-06 22:34:00,675 INFO L266 CegarLoopResult]: For program point L460(line 460) no Hoare annotation was computed. [2020-11-06 22:34:00,676 INFO L266 CegarLoopResult]: For program point L427(line 427) no Hoare annotation was computed. [2020-11-06 22:34:00,676 INFO L266 CegarLoopResult]: For program point L394(line 394) no Hoare annotation was computed. [2020-11-06 22:34:00,676 INFO L266 CegarLoopResult]: For program point L196(lines 196 392) no Hoare annotation was computed. [2020-11-06 22:34:00,676 INFO L266 CegarLoopResult]: For program point L64(lines 64 392) no Hoare annotation was computed. [2020-11-06 22:34:00,676 INFO L266 CegarLoopResult]: For program point L263(lines 263 392) no Hoare annotation was computed. [2020-11-06 22:34:00,676 INFO L266 CegarLoopResult]: For program point L131(lines 131 392) no Hoare annotation was computed. [2020-11-06 22:34:00,676 INFO L266 CegarLoopResult]: For program point L561-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,676 INFO L266 CegarLoopResult]: For program point L528-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,676 INFO L266 CegarLoopResult]: For program point L495-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,677 INFO L266 CegarLoopResult]: For program point L462-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,677 INFO L266 CegarLoopResult]: For program point L429-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,677 INFO L266 CegarLoopResult]: For program point L363(lines 363 392) no Hoare annotation was computed. [2020-11-06 22:34:00,677 INFO L266 CegarLoopResult]: For program point L396-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:00,677 INFO L266 CegarLoopResult]: For program point L99(lines 99 392) no Hoare annotation was computed. [2020-11-06 22:34:00,677 INFO L266 CegarLoopResult]: For program point L33(lines 33 392) no Hoare annotation was computed. [2020-11-06 22:34:00,677 INFO L266 CegarLoopResult]: For program point L562(line 562) no Hoare annotation was computed. [2020-11-06 22:34:00,677 INFO L266 CegarLoopResult]: For program point L529(line 529) no Hoare annotation was computed. [2020-11-06 22:34:00,677 INFO L266 CegarLoopResult]: For program point L496(line 496) no Hoare annotation was computed. [2020-11-06 22:34:00,677 INFO L266 CegarLoopResult]: For program point L463(line 463) no Hoare annotation was computed. [2020-11-06 22:34:00,678 INFO L266 CegarLoopResult]: For program point L430(line 430) no Hoare annotation was computed. [2020-11-06 22:34:00,678 INFO L266 CegarLoopResult]: For program point L397(line 397) no Hoare annotation was computed. [2020-11-06 22:34:00,678 INFO L266 CegarLoopResult]: For program point L331(lines 331 392) no Hoare annotation was computed. [2020-11-06 22:34:00,678 INFO L266 CegarLoopResult]: For program point L199(lines 199 392) no Hoare annotation was computed. [2020-11-06 22:34:00,678 INFO L266 CegarLoopResult]: For program point L67(lines 67 392) no Hoare annotation was computed. [2020-11-06 22:34:00,678 INFO L266 CegarLoopResult]: For program point L365(lines 365 392) no Hoare annotation was computed. [2020-11-06 22:34:00,678 INFO L266 CegarLoopResult]: For program point L233(lines 233 392) no Hoare annotation was computed. [2020-11-06 22:34:00,678 INFO L266 CegarLoopResult]: For program point L167(lines 167 392) no Hoare annotation was computed. [2020-11-06 22:34:00,678 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:34:00,678 INFO L262 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= ~a21~0 1) (<= ~a16~0 5) (= ~a20~0 1) (<= 5 ~a16~0) (= ~a7~0 0) (= ~a17~0 1)) [2020-11-06 22:34:00,679 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:34:00,679 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:34:00,679 INFO L262 CegarLoopResult]: At program point mainENTRY(lines 579 596) the Hoare annotation is: (or (not (= |old(~a17~0)| 1)) (not (<= 5 |old(~a16~0)|)) (and (= ~a17~0 |old(~a17~0)|) (= ~a21~0 1) (= ~a20~0 |old(~a20~0)|) (= ~a16~0 |old(~a16~0)|) (= ~a8~0 |old(~a8~0)|) (= ~a7~0 0)) (not (<= |old(~a16~0)| 5)) (not (= |old(~a20~0)| 1)) (not (= |old(~a21~0)| 1)) (not (= |old(~a7~0)| 0))) [2020-11-06 22:34:00,679 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 579 596) no Hoare annotation was computed. [2020-11-06 22:34:00,679 INFO L262 CegarLoopResult]: At program point L593(line 593) the Hoare annotation is: (let ((.cse3 (<= ~a17~0 0)) (.cse4 (<= ~a16~0 4)) (.cse1 (= ~a7~0 1)) (.cse2 (<= ~a16~0 5)) (.cse6 (= ~a20~0 1)) (.cse5 (<= ~a8~0 13)) (.cse0 (= ~a21~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (not (<= 5 |old(~a16~0)|)) (not (= |old(~a17~0)| 1)) (and .cse0 .cse4 .cse5) (not (<= |old(~a16~0)| 5)) (and .cse1 .cse3 .cse6 .cse5) (and .cse1 .cse4 .cse5) (and .cse1 .cse2 .cse6 (= ~a17~0 1) .cse5) (not (= |old(~a20~0)| 1)) (and .cse0 (= ~a7~0 0)) (not (= |old(~a21~0)| 1)) (not (= |old(~a7~0)| 0)))) [2020-11-06 22:34:00,679 INFO L266 CegarLoopResult]: For program point L593-1(line 593) no Hoare annotation was computed. [2020-11-06 22:34:00,679 INFO L266 CegarLoopResult]: For program point L590(line 590) no Hoare annotation was computed. [2020-11-06 22:34:00,680 INFO L262 CegarLoopResult]: At program point L585-2(lines 585 595) the Hoare annotation is: (let ((.cse3 (<= ~a17~0 0)) (.cse4 (<= ~a16~0 4)) (.cse1 (= ~a7~0 1)) (.cse2 (<= ~a16~0 5)) (.cse6 (= ~a20~0 1)) (.cse5 (<= ~a8~0 13)) (.cse0 (= ~a21~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (not (<= 5 |old(~a16~0)|)) (not (= |old(~a17~0)| 1)) (and .cse0 .cse4 .cse5) (not (<= |old(~a16~0)| 5)) (and .cse1 .cse3 .cse6 .cse5) (and .cse1 .cse4 .cse5) (and .cse1 .cse2 .cse6 (= ~a17~0 1) .cse5) (not (= |old(~a20~0)| 1)) (and .cse0 (= ~a7~0 0)) (not (= |old(~a21~0)| 1)) (not (= |old(~a7~0)| 0)))) [2020-11-06 22:34:00,680 INFO L266 CegarLoopResult]: For program point L585-3(lines 579 596) no Hoare annotation was computed. [2020-11-06 22:34:00,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:34:00 BoogieIcfgContainer [2020-11-06 22:34:00,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:34:00,701 INFO L168 Benchmark]: Toolchain (without parser) took 34906.92 ms. Allocated memory was 151.0 MB in the beginning and 587.2 MB in the end (delta: 436.2 MB). Free memory was 124.0 MB in the beginning and 327.1 MB in the end (delta: -203.0 MB). Peak memory consumption was 354.2 MB. Max. memory is 8.0 GB. [2020-11-06 22:34:00,702 INFO L168 Benchmark]: CDTParser took 1.13 ms. Allocated memory is still 151.0 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:34:00,703 INFO L168 Benchmark]: CACSL2BoogieTranslator took 698.85 ms. Allocated memory is still 151.0 MB. Free memory was 123.4 MB in the beginning and 130.8 MB in the end (delta: -7.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:34:00,703 INFO L168 Benchmark]: Boogie Preprocessor took 172.37 ms. Allocated memory is still 151.0 MB. Free memory was 130.8 MB in the beginning and 125.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-11-06 22:34:00,704 INFO L168 Benchmark]: RCFGBuilder took 1350.60 ms. Allocated memory was 151.0 MB in the beginning and 192.9 MB in the end (delta: 41.9 MB). Free memory was 125.6 MB in the beginning and 145.6 MB in the end (delta: -20.0 MB). Peak memory consumption was 81.7 MB. Max. memory is 8.0 GB. [2020-11-06 22:34:00,705 INFO L168 Benchmark]: TraceAbstraction took 32671.26 ms. Allocated memory was 192.9 MB in the beginning and 587.2 MB in the end (delta: 394.3 MB). Free memory was 145.1 MB in the beginning and 327.1 MB in the end (delta: -182.0 MB). Peak memory consumption was 332.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:34:00,709 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.13 ms. Allocated memory is still 151.0 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 698.85 ms. Allocated memory is still 151.0 MB. Free memory was 123.4 MB in the beginning and 130.8 MB in the end (delta: -7.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 172.37 ms. Allocated memory is still 151.0 MB. Free memory was 130.8 MB in the beginning and 125.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1350.60 ms. Allocated memory was 151.0 MB in the beginning and 192.9 MB in the end (delta: 41.9 MB). Free memory was 125.6 MB in the beginning and 145.6 MB in the end (delta: -20.0 MB). Peak memory consumption was 81.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 32671.26 ms. Allocated memory was 192.9 MB in the beginning and 587.2 MB in the end (delta: 394.3 MB). Free memory was 145.1 MB in the beginning and 327.1 MB in the end (delta: -182.0 MB). Peak memory consumption was 332.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 585]: Loop Invariant Derived loop invariant: (((((((((((((a21 == 1 && a7 == 1) && a16 <= 5) && a17 <= 0) || !(5 <= \old(a16))) || !(\old(a17) == 1)) || ((a21 == 1 && a16 <= 4) && a8 <= 13)) || !(\old(a16) <= 5)) || (((a7 == 1 && a17 <= 0) && a20 == 1) && a8 <= 13)) || ((a7 == 1 && a16 <= 4) && a8 <= 13)) || ((((a7 == 1 && a16 <= 5) && a20 == 1) && a17 == 1) && a8 <= 13)) || !(\old(a20) == 1)) || (a21 == 1 && a7 == 0)) || !(\old(a21) == 1)) || !(\old(a7) == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 211 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 28.3s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 22.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 386 SDtfs, 5619 SDslu, 505 SDs, 0 SdLazy, 9341 SolverSat, 1987 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1045 GetRequests, 927 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5279occurred 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: 0.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 1133 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 393 PreInvPairs, 527 NumberOfFragments, 637 HoareAnnotationTreeSize, 393 FomulaSimplifications, 97686 FormulaSimplificationTreeSizeReduction, 1.5s HoareSimplificationTime, 9 FomulaSimplificationsInter, 7424 FormulaSimplificationTreeSizeReductionInter, 2.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1893 NumberOfCodeBlocks, 1893 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1881 ConstructedInterpolants, 0 QuantifiedInterpolants, 649280 SizeOfPredicates, 4 NumberOfNonLiveVariables, 2977 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 1290/1406 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...