/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/nla-digbench/ps3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-11 02:33:51,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-11 02:33:51,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-11 02:33:51,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-11 02:33:51,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-11 02:33:51,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-11 02:33:51,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-11 02:33:51,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-11 02:33:51,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-11 02:33:51,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-11 02:33:51,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-11 02:33:51,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-11 02:33:51,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-11 02:33:51,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-11 02:33:51,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-11 02:33:51,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-11 02:33:51,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-11 02:33:51,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-11 02:33:51,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-11 02:33:51,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-11 02:33:51,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-11 02:33:51,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-11 02:33:51,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-11 02:33:51,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-11 02:33:51,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-11 02:33:51,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-11 02:33:51,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-11 02:33:51,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-11 02:33:51,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-11 02:33:51,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-11 02:33:51,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-11 02:33:51,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-11 02:33:51,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-11 02:33:51,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-11 02:33:51,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-11 02:33:51,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-11 02:33:51,612 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-11 02:33:51,633 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-11 02:33:51,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-11 02:33:51,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-11 02:33:51,636 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-11 02:33:51,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-11 02:33:51,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-11 02:33:51,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-11 02:33:51,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-11 02:33:51,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-11 02:33:51,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-11 02:33:51,639 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-11 02:33:51,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-11 02:33:51,639 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-11 02:33:51,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-11 02:33:51,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-11 02:33:51,640 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-11 02:33:51,640 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-11 02:33:51,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-11 02:33:51,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-11 02:33:51,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-11 02:33:51,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-11 02:33:51,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-11 02:33:51,641 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-11 02:33:51,973 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-11 02:33:51,997 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-11 02:33:52,002 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-11 02:33:52,004 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-11 02:33:52,005 INFO L275 PluginConnector]: CDTParser initialized [2020-07-11 02:33:52,006 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/ps3.c [2020-07-11 02:33:52,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdbb02469/56393040bbca4bb8a426d4b79110c6d9/FLAGbd9f27335 [2020-07-11 02:33:52,674 INFO L306 CDTParser]: Found 1 translation units. [2020-07-11 02:33:52,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/ps3.c [2020-07-11 02:33:52,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdbb02469/56393040bbca4bb8a426d4b79110c6d9/FLAGbd9f27335 [2020-07-11 02:33:53,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdbb02469/56393040bbca4bb8a426d4b79110c6d9 [2020-07-11 02:33:53,056 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-11 02:33:53,058 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-11 02:33:53,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-11 02:33:53,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-11 02:33:53,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-11 02:33:53,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 02:33:53" (1/1) ... [2020-07-11 02:33:53,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@779759fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:33:53, skipping insertion in model container [2020-07-11 02:33:53,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 02:33:53" (1/1) ... [2020-07-11 02:33:53,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-11 02:33:53,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-11 02:33:53,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-11 02:33:53,334 INFO L203 MainTranslator]: Completed pre-run [2020-07-11 02:33:53,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-11 02:33:53,378 INFO L208 MainTranslator]: Completed translation [2020-07-11 02:33:53,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:33:53 WrapperNode [2020-07-11 02:33:53,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-11 02:33:53,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-11 02:33:53,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-11 02:33:53,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-11 02:33:53,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:33:53" (1/1) ... [2020-07-11 02:33:53,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:33:53" (1/1) ... [2020-07-11 02:33:53,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:33:53" (1/1) ... [2020-07-11 02:33:53,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:33:53" (1/1) ... [2020-07-11 02:33:53,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:33:53" (1/1) ... [2020-07-11 02:33:53,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:33:53" (1/1) ... [2020-07-11 02:33:53,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:33:53" (1/1) ... [2020-07-11 02:33:53,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-11 02:33:53,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-11 02:33:53,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-11 02:33:53,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-11 02:33:53,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:33:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-11 02:33:53,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-11 02:33:53,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-11 02:33:53,586 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-11 02:33:53,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-11 02:33:53,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-11 02:33:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-11 02:33:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-11 02:33:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-11 02:33:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-11 02:33:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-11 02:33:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-11 02:33:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-11 02:33:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-11 02:33:53,904 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-11 02:33:53,905 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-11 02:33:53,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 02:33:53 BoogieIcfgContainer [2020-07-11 02:33:53,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-11 02:33:53,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-11 02:33:53,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-11 02:33:53,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-11 02:33:53,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 02:33:53" (1/3) ... [2020-07-11 02:33:53,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31673858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 02:33:53, skipping insertion in model container [2020-07-11 02:33:53,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:33:53" (2/3) ... [2020-07-11 02:33:53,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31673858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 02:33:53, skipping insertion in model container [2020-07-11 02:33:53,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 02:33:53" (3/3) ... [2020-07-11 02:33:53,922 INFO L109 eAbstractionObserver]: Analyzing ICFG ps3.c [2020-07-11 02:33:53,938 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-11 02:33:53,948 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-11 02:33:53,968 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-11 02:33:54,011 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-11 02:33:54,011 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-11 02:33:54,011 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-11 02:33:54,012 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-11 02:33:54,012 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-11 02:33:54,012 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-11 02:33:54,013 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-11 02:33:54,013 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-11 02:33:54,031 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-07-11 02:33:54,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-11 02:33:54,048 INFO L414 BasicCegarLoop]: Found error trace [2020-07-11 02:33:54,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-11 02:33:54,050 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-11 02:33:54,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-11 02:33:54,059 INFO L82 PathProgramCache]: Analyzing trace with hash 41942830, now seen corresponding path program 1 times [2020-07-11 02:33:54,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-11 02:33:54,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011556311] [2020-07-11 02:33:54,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-11 02:33:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 02:33:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 02:33:54,225 INFO L280 TraceCheckUtils]: 0: Hoare triple {35#true} assume true; {35#true} is VALID [2020-07-11 02:33:54,226 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {35#true} {35#true} #59#return; {35#true} is VALID [2020-07-11 02:33:54,229 INFO L263 TraceCheckUtils]: 0: Hoare triple {35#true} call ULTIMATE.init(); {35#true} is VALID [2020-07-11 02:33:54,229 INFO L280 TraceCheckUtils]: 1: Hoare triple {35#true} assume true; {35#true} is VALID [2020-07-11 02:33:54,230 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {35#true} {35#true} #59#return; {35#true} is VALID [2020-07-11 02:33:54,230 INFO L263 TraceCheckUtils]: 3: Hoare triple {35#true} call #t~ret1 := main(); {35#true} is VALID [2020-07-11 02:33:54,230 INFO L280 TraceCheckUtils]: 4: Hoare triple {35#true} havoc ~k~0; {35#true} is VALID [2020-07-11 02:33:54,231 INFO L280 TraceCheckUtils]: 5: Hoare triple {35#true} havoc ~y~0; {35#true} is VALID [2020-07-11 02:33:54,231 INFO L280 TraceCheckUtils]: 6: Hoare triple {35#true} havoc ~x~0; {35#true} is VALID [2020-07-11 02:33:54,232 INFO L280 TraceCheckUtils]: 7: Hoare triple {35#true} havoc ~c~0; {35#true} is VALID [2020-07-11 02:33:54,232 INFO L280 TraceCheckUtils]: 8: Hoare triple {35#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {35#true} is VALID [2020-07-11 02:33:54,232 INFO L280 TraceCheckUtils]: 9: Hoare triple {35#true} ~k~0 := #t~nondet0; {35#true} is VALID [2020-07-11 02:33:54,233 INFO L280 TraceCheckUtils]: 10: Hoare triple {35#true} havoc #t~nondet0; {35#true} is VALID [2020-07-11 02:33:54,233 INFO L280 TraceCheckUtils]: 11: Hoare triple {35#true} ~y~0 := 0; {35#true} is VALID [2020-07-11 02:33:54,233 INFO L280 TraceCheckUtils]: 12: Hoare triple {35#true} ~x~0 := 0; {35#true} is VALID [2020-07-11 02:33:54,234 INFO L280 TraceCheckUtils]: 13: Hoare triple {35#true} ~c~0 := 0; {35#true} is VALID [2020-07-11 02:33:54,236 INFO L280 TraceCheckUtils]: 14: Hoare triple {35#true} assume !true; {36#false} is VALID [2020-07-11 02:33:54,237 INFO L263 TraceCheckUtils]: 15: Hoare triple {36#false} call __VERIFIER_assert((if 0 == 6 * ~x~0 - 2 * ~y~0 * ~y~0 * ~y~0 - 3 * ~y~0 * ~y~0 - ~y~0 then 1 else 0)); {36#false} is VALID [2020-07-11 02:33:54,237 INFO L280 TraceCheckUtils]: 16: Hoare triple {36#false} ~cond := #in~cond; {36#false} is VALID [2020-07-11 02:33:54,238 INFO L280 TraceCheckUtils]: 17: Hoare triple {36#false} assume 0 == ~cond; {36#false} is VALID [2020-07-11 02:33:54,238 INFO L280 TraceCheckUtils]: 18: Hoare triple {36#false} assume !false; {36#false} is VALID [2020-07-11 02:33:54,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-11 02:33:54,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011556311] [2020-07-11 02:33:54,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-11 02:33:54,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-11 02:33:54,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957901437] [2020-07-11 02:33:54,254 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-07-11 02:33:54,258 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-11 02:33:54,262 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-11 02:33:54,328 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 02:33:54,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-11 02:33:54,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-11 02:33:54,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-11 02:33:54,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-11 02:33:54,345 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-07-11 02:33:54,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 02:33:54,512 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2020-07-11 02:33:54,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-11 02:33:54,512 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-07-11 02:33:54,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-11 02:33:54,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-11 02:33:54,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 60 transitions. [2020-07-11 02:33:54,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-11 02:33:54,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 60 transitions. [2020-07-11 02:33:54,532 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 60 transitions. [2020-07-11 02:33:54,692 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 60 edges. 60 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 02:33:54,715 INFO L225 Difference]: With dead ends: 50 [2020-07-11 02:33:54,715 INFO L226 Difference]: Without dead ends: 27 [2020-07-11 02:33:54,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-11 02:33:54,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-11 02:33:54,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-07-11 02:33:54,825 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-11 02:33:54,826 INFO L82 GeneralOperation]: Start isEquivalent. First operand 27 states. Second operand 27 states. [2020-07-11 02:33:54,827 INFO L74 IsIncluded]: Start isIncluded. First operand 27 states. Second operand 27 states. [2020-07-11 02:33:54,827 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 27 states. [2020-07-11 02:33:54,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 02:33:54,834 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-07-11 02:33:54,834 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-07-11 02:33:54,835 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 02:33:54,835 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 02:33:54,835 INFO L74 IsIncluded]: Start isIncluded. First operand 27 states. Second operand 27 states. [2020-07-11 02:33:54,836 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 27 states. [2020-07-11 02:33:54,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 02:33:54,841 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-07-11 02:33:54,841 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-07-11 02:33:54,842 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 02:33:54,842 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 02:33:54,842 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-11 02:33:54,843 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-11 02:33:54,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-11 02:33:54,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-07-11 02:33:54,848 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2020-07-11 02:33:54,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-11 02:33:54,849 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-07-11 02:33:54,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-11 02:33:54,850 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 27 states and 28 transitions. [2020-07-11 02:33:54,901 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 02:33:54,902 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-07-11 02:33:54,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-11 02:33:54,903 INFO L414 BasicCegarLoop]: Found error trace [2020-07-11 02:33:54,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-11 02:33:54,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-11 02:33:54,905 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-11 02:33:54,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-11 02:33:54,906 INFO L82 PathProgramCache]: Analyzing trace with hash 31724517, now seen corresponding path program 1 times [2020-07-11 02:33:54,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-11 02:33:54,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344049050] [2020-07-11 02:33:54,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-11 02:33:54,918 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-11 02:33:54,918 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-07-11 02:33:54,919 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-11 02:33:54,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-11 02:33:54,942 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-11 02:33:54,943 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-11 02:33:54,943 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-11 02:33:54,944 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-11 02:33:54,944 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-11 02:33:54,944 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-11 02:33:54,944 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-11 02:33:54,944 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-11 02:33:54,945 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-11 02:33:54,945 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-11 02:33:54,945 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-11 02:33:54,945 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2020-07-11 02:33:54,945 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-11 02:33:54,946 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-11 02:33:54,946 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-11 02:33:54,946 WARN L170 areAnnotationChecker]: L5-1 has no Hoare annotation [2020-07-11 02:33:54,946 WARN L170 areAnnotationChecker]: L5-3 has no Hoare annotation [2020-07-11 02:33:54,946 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-11 02:33:54,947 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-11 02:33:54,947 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-11 02:33:54,947 WARN L170 areAnnotationChecker]: L8-2 has no Hoare annotation [2020-07-11 02:33:54,947 WARN L170 areAnnotationChecker]: L16-2 has no Hoare annotation [2020-07-11 02:33:54,947 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-11 02:33:54,948 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-11 02:33:54,948 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-11 02:33:54,948 WARN L170 areAnnotationChecker]: L24-1 has no Hoare annotation [2020-07-11 02:33:54,948 WARN L170 areAnnotationChecker]: L24-1 has no Hoare annotation [2020-07-11 02:33:54,948 WARN L170 areAnnotationChecker]: L33 has no Hoare annotation [2020-07-11 02:33:54,949 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-11 02:33:54,949 WARN L170 areAnnotationChecker]: L23-3 has no Hoare annotation [2020-07-11 02:33:54,949 WARN L170 areAnnotationChecker]: L23-3 has no Hoare annotation [2020-07-11 02:33:54,949 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2020-07-11 02:33:54,950 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-11 02:33:54,950 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2020-07-11 02:33:54,950 WARN L170 areAnnotationChecker]: L30 has no Hoare annotation [2020-07-11 02:33:54,950 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-11 02:33:54,950 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-11 02:33:54,951 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-11 02:33:54,951 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-11 02:33:54,951 WARN L170 areAnnotationChecker]: L23-2 has no Hoare annotation [2020-07-11 02:33:54,951 WARN L170 areAnnotationChecker]: L23-2 has no Hoare annotation [2020-07-11 02:33:54,951 WARN L170 areAnnotationChecker]: L23-2 has no Hoare annotation [2020-07-11 02:33:54,951 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-11 02:33:54,952 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-11 02:33:54,952 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-11 02:33:54,952 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-11 02:33:54,957 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-07-11 02:33:54,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.07 02:33:54 BoogieIcfgContainer [2020-07-11 02:33:54,958 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-11 02:33:54,962 INFO L168 Benchmark]: Toolchain (without parser) took 1903.31 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 102.7 MB in the beginning and 102.6 MB in the end (delta: 99.5 kB). Peak memory consumption was 64.6 MB. Max. memory is 7.1 GB. [2020-07-11 02:33:54,963 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 137.9 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-11 02:33:54,964 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.24 ms. Allocated memory is still 137.9 MB. Free memory was 102.5 MB in the beginning and 92.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-11 02:33:54,966 INFO L168 Benchmark]: Boogie Preprocessor took 133.50 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 92.6 MB in the beginning and 182.5 MB in the end (delta: -89.9 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-07-11 02:33:54,967 INFO L168 Benchmark]: RCFGBuilder took 395.99 ms. Allocated memory is still 202.4 MB. Free memory was 182.5 MB in the beginning and 164.3 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. [2020-07-11 02:33:54,968 INFO L168 Benchmark]: TraceAbstraction took 1046.50 ms. Allocated memory is still 202.4 MB. Free memory was 163.6 MB in the beginning and 102.6 MB in the end (delta: 61.0 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. [2020-07-11 02:33:54,972 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 137.9 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 320.24 ms. Allocated memory is still 137.9 MB. Free memory was 102.5 MB in the beginning and 92.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.50 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 92.6 MB in the beginning and 182.5 MB in the end (delta: -89.9 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 395.99 ms. Allocated memory is still 202.4 MB. Free memory was 182.5 MB in the beginning and 164.3 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1046.50 ms. Allocated memory is still 202.4 MB. Free memory was 163.6 MB in the beginning and 102.6 MB in the end (delta: 61.0 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L16] int k, y, x, c; [L17] k = __VERIFIER_nondet_int() [L19] y = 0 [L20] x = 0 [L21] c = 0 [L23] COND TRUE 1 [L24] CALL __VERIFIER_assert(6*x - 2*y*y*y - 3*y*y - y == 0) [L8] COND TRUE !(cond) [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...