/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/nla-digbench/geo3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:51:16,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:51:16,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:51:16,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:51:16,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:51:16,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:51:16,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:51:16,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:51:16,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:51:16,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:51:16,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:51:16,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:51:16,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:51:16,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:51:16,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:51:16,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:51:16,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:51:16,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:51:16,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:51:16,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:51:16,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:51:16,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:51:16,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:51:16,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:51:16,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:51:16,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:51:16,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:51:16,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:51:16,473 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 [2020-10-23 18:51:16,531 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:51:16,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:51:16,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:51:16,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:51:16,536 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:51:16,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:51:16,536 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:51:16,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:51:16,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:51:16,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:51:16,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:51:16,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:51:16,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:51:16,539 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:51:16,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:51:16,539 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:51:16,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:51:16,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:51:16,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:51:16,540 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:51:16,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:51:16,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:51:16,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:51:16,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:51:16,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:51:16,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:51:16,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:51:16,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:51:16,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:51:16,542 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:51:16,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:51:16,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:51:16,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:51:16,992 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:51:16,993 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:51:16,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo3.c [2020-10-23 18:51:17,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e81fc4d51/8fa745eca7e647ca9e54bedf9790c071/FLAG739133c1b [2020-10-23 18:51:17,713 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:51:17,713 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo3.c [2020-10-23 18:51:17,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e81fc4d51/8fa745eca7e647ca9e54bedf9790c071/FLAG739133c1b [2020-10-23 18:51:18,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e81fc4d51/8fa745eca7e647ca9e54bedf9790c071 [2020-10-23 18:51:18,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:51:18,079 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:51:18,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:51:18,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:51:18,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:51:18,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:51:18" (1/1) ... [2020-10-23 18:51:18,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5158ffdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:51:18, skipping insertion in model container [2020-10-23 18:51:18,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:51:18" (1/1) ... [2020-10-23 18:51:18,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:51:18,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:51:18,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:51:18,287 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:51:18,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:51:18,325 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:51:18,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:51:18 WrapperNode [2020-10-23 18:51:18,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:51:18,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:51:18,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:51:18,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:51:18,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:51:18" (1/1) ... [2020-10-23 18:51:18,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:51:18" (1/1) ... [2020-10-23 18:51:18,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:51:18" (1/1) ... [2020-10-23 18:51:18,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:51:18" (1/1) ... [2020-10-23 18:51:18,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:51:18" (1/1) ... [2020-10-23 18:51:18,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:51:18" (1/1) ... [2020-10-23 18:51:18,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:51:18" (1/1) ... [2020-10-23 18:51:18,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:51:18,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:51:18,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:51:18,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:51:18,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:51:18" (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 [2020-10-23 18:51:18,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:51:18,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:51:18,437 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:51:18,437 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:51:18,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:51:18,438 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:51:18,438 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:51:18,438 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:51:18,438 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:51:18,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:51:18,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:51:18,439 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:51:18,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:51:18,439 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:51:18,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:51:18,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:51:18,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:51:18,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:51:18,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:51:18,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:51:18,709 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:51:18,710 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 18:51:18,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:51:18 BoogieIcfgContainer [2020-10-23 18:51:18,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:51:18,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:51:18,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:51:18,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:51:18,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:51:18" (1/3) ... [2020-10-23 18:51:18,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3753012e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:51:18, skipping insertion in model container [2020-10-23 18:51:18,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:51:18" (2/3) ... [2020-10-23 18:51:18,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3753012e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:51:18, skipping insertion in model container [2020-10-23 18:51:18,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:51:18" (3/3) ... [2020-10-23 18:51:18,725 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3.c [2020-10-23 18:51:18,772 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:51:18,786 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:51:18,832 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:51:18,899 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:51:18,899 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:51:18,899 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:51:18,899 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:51:18,899 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:51:18,899 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:51:18,900 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:51:18,900 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:51:18,940 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-23 18:51:18,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-23 18:51:18,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:51:18,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:51:18,957 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:51:18,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:51:18,972 INFO L82 PathProgramCache]: Analyzing trace with hash 619537921, now seen corresponding path program 1 times [2020-10-23 18:51:18,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:51:18,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96109528] [2020-10-23 18:51:18,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:51:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:19,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:51:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:19,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:51:19,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96109528] [2020-10-23 18:51:19,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:51:19,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:51:19,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475658151] [2020-10-23 18:51:19,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:51:19,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:51:19,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:51:19,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:51:19,413 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-10-23 18:51:19,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:51:19,494 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2020-10-23 18:51:19,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:51:19,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-23 18:51:19,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:51:19,506 INFO L225 Difference]: With dead ends: 40 [2020-10-23 18:51:19,506 INFO L226 Difference]: Without dead ends: 17 [2020-10-23 18:51:19,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:51:19,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-23 18:51:19,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-23 18:51:19,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-23 18:51:19,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-10-23 18:51:19,557 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2020-10-23 18:51:19,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:51:19,558 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-10-23 18:51:19,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:51:19,558 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-10-23 18:51:19,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-23 18:51:19,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:51:19,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:51:19,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:51:19,560 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:51:19,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:51:19,561 INFO L82 PathProgramCache]: Analyzing trace with hash 674949181, now seen corresponding path program 1 times [2020-10-23 18:51:19,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:51:19,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101627879] [2020-10-23 18:51:19,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:51:19,584 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 18:51:19,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [345068249] [2020-10-23 18:51:19,585 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 [2020-10-23 18:51:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:19,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-23 18:51:19,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:51:19,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:51:19,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101627879] [2020-10-23 18:51:19,753 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 18:51:19,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345068249] [2020-10-23 18:51:19,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:51:19,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:51:19,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80685724] [2020-10-23 18:51:19,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:51:19,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:51:19,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:51:19,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:51:19,757 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2020-10-23 18:51:19,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:51:19,806 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-10-23 18:51:19,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 18:51:19,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-23 18:51:19,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:51:19,808 INFO L225 Difference]: With dead ends: 28 [2020-10-23 18:51:19,808 INFO L226 Difference]: Without dead ends: 24 [2020-10-23 18:51:19,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:51:19,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-23 18:51:19,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-23 18:51:19,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-23 18:51:19,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-10-23 18:51:19,820 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 12 [2020-10-23 18:51:19,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:51:19,820 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-10-23 18:51:19,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:51:19,821 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-10-23 18:51:19,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-23 18:51:19,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:51:19,822 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:51:20,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-23 18:51:20,037 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:51:20,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:51:20,039 INFO L82 PathProgramCache]: Analyzing trace with hash -722961082, now seen corresponding path program 1 times [2020-10-23 18:51:20,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:51:20,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132103458] [2020-10-23 18:51:20,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:51:20,058 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 18:51:20,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1865500348] [2020-10-23 18:51:20,059 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 [2020-10-23 18:51:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:20,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-23 18:51:20,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:51:20,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:51:20,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132103458] [2020-10-23 18:51:20,255 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 18:51:20,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865500348] [2020-10-23 18:51:20,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-23 18:51:20,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-23 18:51:20,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772645758] [2020-10-23 18:51:20,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 18:51:20,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:51:20,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 18:51:20,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-23 18:51:20,259 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 8 states. [2020-10-23 18:51:27,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:51:27,122 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2020-10-23 18:51:27,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 18:51:27,123 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-23 18:51:27,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:51:27,124 INFO L225 Difference]: With dead ends: 35 [2020-10-23 18:51:27,124 INFO L226 Difference]: Without dead ends: 32 [2020-10-23 18:51:27,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:51:27,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-23 18:51:27,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-23 18:51:27,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-23 18:51:27,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-10-23 18:51:27,136 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 19 [2020-10-23 18:51:27,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:51:27,137 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-10-23 18:51:27,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 18:51:27,137 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-10-23 18:51:27,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-23 18:51:27,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:51:27,139 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:51:27,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:51:27,354 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:51:27,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:51:27,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1590312265, now seen corresponding path program 1 times [2020-10-23 18:51:27,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:51:27,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849648610] [2020-10-23 18:51:27,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:51:27,383 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 18:51:27,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897150690] [2020-10-23 18:51:27,384 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 [2020-10-23 18:51:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:27,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-23 18:51:27,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:51:27,513 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:51:27,592 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-23 18:51:27,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849648610] [2020-10-23 18:51:27,593 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 18:51:27,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897150690] [2020-10-23 18:51:27,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-23 18:51:27,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-23 18:51:27,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061364819] [2020-10-23 18:51:27,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 18:51:27,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:51:27,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 18:51:27,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-23 18:51:27,596 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 7 states. [2020-10-23 18:51:31,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:51:31,887 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-10-23 18:51:31,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 18:51:31,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-23 18:51:31,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:51:31,893 INFO L225 Difference]: With dead ends: 37 [2020-10-23 18:51:31,893 INFO L226 Difference]: Without dead ends: 29 [2020-10-23 18:51:31,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=23, Invalid=48, Unknown=1, NotChecked=0, Total=72 [2020-10-23 18:51:31,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-23 18:51:31,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-23 18:51:31,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-23 18:51:31,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-10-23 18:51:31,914 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 25 [2020-10-23 18:51:31,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:51:31,915 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-10-23 18:51:31,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 18:51:31,915 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-10-23 18:51:31,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-23 18:51:31,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:51:31,916 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:51:32,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:51:32,130 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:51:32,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:51:32,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1314661347, now seen corresponding path program 2 times [2020-10-23 18:51:32,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:51:32,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60551217] [2020-10-23 18:51:32,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:51:32,147 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 18:51:32,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1708515129] [2020-10-23 18:51:32,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-10-23 18:51:32,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 18:51:32,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:51:32,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-23 18:51:32,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:51:36,607 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 14 [2020-10-23 18:51:36,684 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-23 18:51:36,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60551217] [2020-10-23 18:51:36,685 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 18:51:36,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708515129] [2020-10-23 18:51:36,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-23 18:51:36,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-23 18:51:36,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040476975] [2020-10-23 18:51:36,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 18:51:36,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:51:36,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 18:51:36,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=70, Unknown=1, NotChecked=0, Total=90 [2020-10-23 18:51:36,687 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 10 states. [2020-10-23 18:51:50,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:51:50,509 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-10-23 18:51:50,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 18:51:50,510 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-10-23 18:51:50,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:51:50,512 INFO L225 Difference]: With dead ends: 40 [2020-10-23 18:51:50,512 INFO L226 Difference]: Without dead ends: 37 [2020-10-23 18:51:50,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=30, Invalid=101, Unknown=1, NotChecked=0, Total=132 [2020-10-23 18:51:50,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-23 18:51:50,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-10-23 18:51:50,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-23 18:51:50,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-10-23 18:51:50,527 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 26 [2020-10-23 18:51:50,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:51:50,527 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-10-23 18:51:50,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 18:51:50,528 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-10-23 18:51:50,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-23 18:51:50,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:51:50,529 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:51:50,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:51:50,735 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:51:50,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:51:50,737 INFO L82 PathProgramCache]: Analyzing trace with hash 153054566, now seen corresponding path program 3 times [2020-10-23 18:51:50,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:51:50,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193152113] [2020-10-23 18:51:50,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:51:50,751 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 18:51:50,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1035465654] [2020-10-23 18:51:50,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-10-23 18:51:50,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-23 18:51:50,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:51:50,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-23 18:51:50,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:51:56,741 WARN L193 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-10-23 18:51:56,751 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:51:56,758 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:51:56,764 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:51:56,771 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:51:56,782 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:51:56,784 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:51:56,788 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:51:56,792 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:51:56,793 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:51:56,797 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:52:16,018 WARN L193 SmtUtils]: Spent 12.61 s on a formula simplification that was a NOOP. DAG size: 38 [2020-10-23 18:52:16,048 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:52:39,834 WARN L193 SmtUtils]: Spent 14.31 s on a formula simplification that was a NOOP. DAG size: 38 [2020-10-23 18:52:41,906 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:52:50,200 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_main_~a~0_BEFORE_CALL_8 Int) (v_main_~z~0_BEFORE_CALL_6 Int) (v_main_~x~0_BEFORE_CALL_8 Int)) (let ((.cse2 (+ (* v_main_~a~0_BEFORE_CALL_8 (- 1)) v_main_~x~0_BEFORE_CALL_8))) (let ((.cse0 (div .cse2 v_main_~z~0_BEFORE_CALL_6)) (.cse1 (* v_main_~z~0_BEFORE_CALL_6 v_main_~a~0_BEFORE_CALL_8))) (and (= (mod (+ (* v_main_~z~0_BEFORE_CALL_6 .cse0) (* .cse0 (- 1)) v_main_~a~0_BEFORE_CALL_8) .cse1) 0) (not (= (+ (* v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_BEFORE_CALL_8) v_main_~a~0_BEFORE_CALL_8) (+ (* (div (+ (* .cse0 v_main_~z~0_BEFORE_CALL_6) v_main_~a~0_BEFORE_CALL_8 (* (- 1) .cse0)) .cse1) v_main_~a~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_6 v_main_~z~0_BEFORE_CALL_6) v_main_~x~0_BEFORE_CALL_8))) (not (= v_main_~a~0_BEFORE_CALL_8 0)) (= (mod .cse2 v_main_~z~0_BEFORE_CALL_6) 0) (not (= v_main_~z~0_BEFORE_CALL_6 0)))))) is different from false [2020-10-23 18:52:52,241 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_main_~a~0_BEFORE_CALL_8 Int) (v_main_~z~0_BEFORE_CALL_6 Int) (v_main_~x~0_BEFORE_CALL_8 Int)) (let ((.cse2 (+ (* v_main_~a~0_BEFORE_CALL_8 (- 1)) v_main_~x~0_BEFORE_CALL_8))) (let ((.cse0 (div .cse2 v_main_~z~0_BEFORE_CALL_6)) (.cse1 (* v_main_~z~0_BEFORE_CALL_6 v_main_~a~0_BEFORE_CALL_8))) (and (= (mod (+ (* v_main_~z~0_BEFORE_CALL_6 .cse0) (* .cse0 (- 1)) v_main_~a~0_BEFORE_CALL_8) .cse1) 0) (not (= (+ (* v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_BEFORE_CALL_8) v_main_~a~0_BEFORE_CALL_8) (+ (* (div (+ (* .cse0 v_main_~z~0_BEFORE_CALL_6) v_main_~a~0_BEFORE_CALL_8 (* (- 1) .cse0)) .cse1) v_main_~a~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_6 v_main_~z~0_BEFORE_CALL_6) v_main_~x~0_BEFORE_CALL_8))) (not (= v_main_~a~0_BEFORE_CALL_8 0)) (= (mod .cse2 v_main_~z~0_BEFORE_CALL_6) 0) (not (= v_main_~z~0_BEFORE_CALL_6 0)))))) is different from true [2020-10-23 18:52:56,416 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-23 18:52:56,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193152113] [2020-10-23 18:52:56,417 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 18:52:56,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035465654] [2020-10-23 18:52:56,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-23 18:52:56,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-23 18:52:56,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415334536] [2020-10-23 18:52:56,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 18:52:56,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:52:56,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 18:52:56,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=4, NotChecked=12, Total=72 [2020-10-23 18:52:56,419 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 9 states. [2020-10-23 18:53:03,849 WARN L193 SmtUtils]: Spent 2.97 s on a formula simplification. DAG size of input: 41 DAG size of output: 3 [2020-10-23 18:53:11,648 WARN L193 SmtUtils]: Spent 6.44 s on a formula simplification. DAG size of input: 47 DAG size of output: 6 [2020-10-23 18:54:05,402 WARN L193 SmtUtils]: Spent 36.26 s on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-10-23 18:54:59,837 WARN L193 SmtUtils]: Spent 50.29 s on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2020-10-23 18:55:01,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:55:01,890 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-10-23 18:55:02,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 18:55:02,072 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-10-23 18:55:02,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:55:02,072 INFO L225 Difference]: With dead ends: 36 [2020-10-23 18:55:02,073 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:55:02,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 157.3s TimeCoverageRelationStatistics Valid=36, Invalid=90, Unknown=10, NotChecked=20, Total=156 [2020-10-23 18:55:02,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:55:02,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:55:02,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:55:02,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:55:02,074 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-10-23 18:55:02,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:55:02,074 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:55:02,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 18:55:02,074 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:55:02,075 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:55:02,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-23 18:55:02,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:55:54,548 WARN L193 SmtUtils]: Spent 52.09 s on a formula simplification. DAG size of input: 75 DAG size of output: 40 [2020-10-23 18:55:58,695 WARN L193 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 58 DAG size of output: 1 [2020-10-23 18:57:10,825 WARN L193 SmtUtils]: Spent 1.20 m on a formula simplification. DAG size of input: 73 DAG size of output: 42 [2020-10-23 18:57:11,326 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 9 [2020-10-23 18:57:25,789 WARN L193 SmtUtils]: Spent 14.46 s on a formula simplification. DAG size of input: 79 DAG size of output: 1 [2020-10-23 18:58:40,689 WARN L193 SmtUtils]: Spent 1.25 m on a formula simplification. DAG size of input: 75 DAG size of output: 40 [2020-10-23 18:58:40,692 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2020-10-23 18:58:40,692 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 8) the Hoare annotation is: true [2020-10-23 18:58:40,692 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 8) no Hoare annotation was computed. [2020-10-23 18:58:40,692 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-10-23 18:58:40,693 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:58:40,693 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-23 18:58:40,693 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:58:40,693 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:58:40,693 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 18:58:40,693 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:58:40,693 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:58:40,693 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 11 13) no Hoare annotation was computed. [2020-10-23 18:58:40,694 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-23 18:58:40,694 INFO L274 CegarLoopResult]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2020-10-23 18:58:40,694 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2020-10-23 18:58:40,694 INFO L270 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (or (let ((.cse0 (+ main_~x~0 (* main_~a~0 (- 1))))) (and (= (mod .cse0 main_~z~0) 0) (not (= main_~z~0 0)) (let ((.cse1 (div .cse0 main_~z~0))) (let ((.cse3 (= main_~a~0 0)) (.cse2 (* main_~z~0 .cse1))) (or (and (= .cse1 (+ .cse2 main_~a~0)) .cse3) (let ((.cse4 (+ .cse2 (* .cse1 (- 1)) main_~a~0)) (.cse5 (* main_~z~0 main_~a~0))) (and (= (mod .cse4 .cse5) 0) (not .cse3) (= (* main_~z~0 (div .cse4 .cse5)) main_~y~0)))))))) (and (= main_~a~0 main_~x~0) (= (+ main_~a~0 (* main_~x~0 main_~z~0)) (+ main_~x~0 (* main_~y~0 main_~z~0 main_~a~0))))) [2020-10-23 18:58:40,694 INFO L274 CegarLoopResult]: For program point L33-1(lines 32 41) no Hoare annotation was computed. [2020-10-23 18:58:40,694 INFO L270 CegarLoopResult]: At program point L32-2(lines 32 41) the Hoare annotation is: (or (let ((.cse0 (+ main_~x~0 (* main_~a~0 (- 1))))) (and (= (mod .cse0 main_~z~0) 0) (not (= main_~z~0 0)) (let ((.cse1 (div .cse0 main_~z~0))) (let ((.cse3 (= main_~a~0 0)) (.cse2 (* main_~z~0 .cse1))) (or (and (= .cse1 (+ .cse2 main_~a~0)) .cse3) (let ((.cse4 (+ .cse2 (* .cse1 (- 1)) main_~a~0)) (.cse5 (* main_~z~0 main_~a~0))) (and (= (mod .cse4 .cse5) 0) (not .cse3) (= (* main_~z~0 (div .cse4 .cse5)) main_~y~0)))))))) (and (= main_~a~0 main_~x~0) (= (+ main_~a~0 (* main_~x~0 main_~z~0)) (+ main_~x~0 (* main_~y~0 main_~z~0 main_~a~0))))) [2020-10-23 18:58:40,695 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 21 44) the Hoare annotation is: true [2020-10-23 18:58:40,695 INFO L270 CegarLoopResult]: At program point L32-3(lines 32 41) the Hoare annotation is: (= (+ main_~a~0 (* main_~x~0 main_~z~0)) (+ main_~x~0 (* main_~y~0 main_~z~0 main_~a~0))) [2020-10-23 18:58:40,695 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 21 44) no Hoare annotation was computed. [2020-10-23 18:58:40,695 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 21 44) no Hoare annotation was computed. [2020-10-23 18:58:40,695 INFO L274 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-10-23 18:58:40,695 INFO L270 CegarLoopResult]: At program point L16(lines 16 17) the Hoare annotation is: (and (not (<= 1 |__VERIFIER_assert_#in~cond|)) (or (forall ((v_main_~a~0_BEFORE_CALL_8 Int) (v_main_~z~0_BEFORE_CALL_6 Int) (v_main_~x~0_BEFORE_CALL_8 Int)) (let ((.cse3 (+ (* v_main_~a~0_BEFORE_CALL_8 (- 1)) v_main_~x~0_BEFORE_CALL_8))) (let ((.cse0 (div .cse3 v_main_~z~0_BEFORE_CALL_6))) (let ((.cse1 (* .cse0 (- 1))) (.cse2 (* v_main_~z~0_BEFORE_CALL_6 v_main_~a~0_BEFORE_CALL_8))) (or (= v_main_~z~0_BEFORE_CALL_6 0) (not (= (mod (+ (* v_main_~z~0_BEFORE_CALL_6 .cse0) .cse1 v_main_~a~0_BEFORE_CALL_8) .cse2) 0)) (= (+ (* (div (+ .cse1 v_main_~a~0_BEFORE_CALL_8 (* .cse0 v_main_~z~0_BEFORE_CALL_6)) .cse2) v_main_~a~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_6 v_main_~z~0_BEFORE_CALL_6) v_main_~x~0_BEFORE_CALL_8) (+ (* v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_BEFORE_CALL_8) v_main_~a~0_BEFORE_CALL_8)) (= v_main_~a~0_BEFORE_CALL_8 0) (not (= (mod .cse3 v_main_~z~0_BEFORE_CALL_6) 0))))))) (not (<= 0 |__VERIFIER_assert_#in~cond|)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) [2020-10-23 18:58:40,696 INFO L274 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-10-23 18:58:40,696 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2020-10-23 18:58:40,696 INFO L274 CegarLoopResult]: For program point L15-1(lines 14 20) no Hoare annotation was computed. [2020-10-23 18:58:40,696 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2020-10-23 18:58:40,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:58:40 BoogieIcfgContainer [2020-10-23 18:58:40,716 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:58:40,718 INFO L168 Benchmark]: Toolchain (without parser) took 442643.43 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 121.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 80.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:58:40,719 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 123.9 MB in the end (delta: 77.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:58:40,720 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.00 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:58:40,721 INFO L168 Benchmark]: Boogie Preprocessor took 36.35 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:58:40,727 INFO L168 Benchmark]: RCFGBuilder took 347.44 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 101.2 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-23 18:58:40,728 INFO L168 Benchmark]: TraceAbstraction took 442002.60 ms. Allocated memory is still 151.0 MB. Free memory was 100.7 MB in the beginning and 121.5 MB in the end (delta: -20.7 MB). Peak memory consumption was 54.8 MB. Max. memory is 8.0 GB. [2020-10-23 18:58:40,735 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 123.9 MB in the end (delta: 77.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 246.00 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.35 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 347.44 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 101.2 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 442002.60 ms. Allocated memory is still 151.0 MB. Free memory was 100.7 MB in the beginning and 121.5 MB in the end (delta: -20.7 MB). Peak memory consumption was 54.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 32]: Loop Invariant Derived loop invariant: (((x + a * -1) % z == 0 && !(z == 0)) && (((x + a * -1) / z == z * ((x + a * -1) / z) + a && a == 0) || (((z * ((x + a * -1) / z) + (x + a * -1) / z * -1 + a) % (z * a) == 0 && !(a == 0)) && z * ((z * ((x + a * -1) / z) + (x + a * -1) / z * -1 + a) / (z * a)) == y))) || (a == x && a + x * z == x + y * z * a) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 223.3s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 150.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 218.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 62 SDslu, 313 SDs, 0 SdLazy, 220 SolverSat, 13 SolverUnsat, 15 SolverUnknown, 0 SolverNotchecked, 34.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 164.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 29 PreInvPairs, 39 NumberOfFragments, 370 HoareAnnotationTreeSize, 29 FomulaSimplifications, 223 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 1728 FormulaSimplificationTreeSizeReductionInter, 218.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 70.5s InterpolantComputationTime, 127 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 121 ConstructedInterpolants, 4 QuantifiedInterpolants, 25957 SizeOfPredicates, 15 NumberOfNonLiveVariables, 685 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 49/63 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...